INIS International Isotopes Inc (QB)

PART I – FINANCIAL INFORMATION

ITEM 1. FINANCIAL STATEMENTS

 

INTERNATIONAL ISOTOPES INC. AND SUBSIDIARIES

Condensed Consolidated Balance Sheets

(unaudited)

 

 

See accompanying notes to condensed consolidated financial statements.

 

 

INTERNATIONAL ISOTOPES INC. AND SUBSIDIARIES

Unaudited Condensed Consolidated Statements of Operations

 

 

See accompanying notes to condensed consolidated financial statements.

 

 

INTERNATIONAL ISOTOPES INC. AND SUBSIDIARIES

Unaudited Condensed Consolidated Statements of Cash Flows

 

 

 

 

Reconciliation of cash, cash equivalents, and restricted cash as shown in the condensed consolidated statements of cash flows is presented in the table below:                

 

 

See accompanying notes to condensed consolidated financial statements.

 

 

INTERNATIONAL ISOTOPES INC. AND SUBSIDIARIES

Condensed Consolidated Statement of Stockholders' (Deficit) Equity

Three Months Ended

(Unaudited)

 

 

 

INTERNATIONAL ISOTOPES INC. AND SUBSIDIARIES

Condensed Consolidated Statement of Stockholders' (Deficit) Equity

Three Months Ended

(Unaudited)

 

 

See accompanying notes to the condensed consolidated financial statements

 

 

INTERNATIONAL ISOTOPES INC. AND SUBSIDIARIES

Notes to Unaudited Condensed Consolidated Financial Statements

March 31, 2024

 

(1)       The Company and Basis of Presentation

 

International Isotopes Inc. (INIS) was incorporated in Texas in November 1995. The accompanying unaudited condensed consolidated financial statements are presented in conformity with accounting principles generally accepted in the United States of America (GAAP) and include all operations and balances of INIS and its wholly-owned subsidiaries, including RadQual, LLC (RadQual) and TI Services, LLC (TI Services). RadQual is a global supplier of molecular imaging quality control and calibration devices, and is based at INIS headquarters in Idaho Falls, Idaho. TI Services is headquartered in Boardman, Ohio and distributes products for nuclear medicine, nuclear cardiology, and Positron Emission Tomography (PET) imaging. INIS, and its wholly-owned subsidiaries are collectively referred to herein as the “Company,” “we,” “our” or “us.”

 

Nature of Operations – The Company manufactures a full range of nuclear medicine calibration and reference standards, generic sodium iodide I-131 drug product, cobalt teletherapy sources, and a varied selection of radiochemicals for medical research, and clinical applications. For 2024, the Company’s business consists of five business segments: Theranostics Products, Cobalt Products, Nuclear Medicine Standards, Medical Device Products, and Fluorine Products. The Company’s headquarters and all operations, with the exception of TI Services, are located in Idaho Falls, Idaho.

 

With the exception of certain unique products, the Company’s normal operating cycle is considered to be one year. Due to the time required to produce some cobalt products, the Company’s operating cycle for those products is considered to be two to three years. Accordingly, preliminary payments received on cobalt contracts, where shipment will not take place for greater than one year, have been recorded as unearned revenue and, depending upon estimated ship dates, classified under either current or long-term liabilities on the Company’s condensed consolidated balance sheets. These unearned revenues are being recognized as revenue in the periods during which the cobalt shipments take place. All assets expected to be realized in cash or sold during the normal operating cycle of business are classified as current assets.

 

Principles of Consolidation – The accompanying unaudited condensed consolidated financial statements are presented in conformity with GAAP and include all operations and balances of INIS and its wholly-owned subsidiaries including RadQual and TI Services. See Note 4 “Investment and Business Consolidation” for additional information. All significant intercompany accounts and transactions have been eliminated in consolidation.

 

Interim Financial Information – The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with GAAP for interim financial information and pursuant to the rules and regulations of the U.S. Securities and Exchange Commission (SEC). Accordingly, the accompanying unaudited condensed consolidated financial statements do not include all of the information and notes required by GAAP for complete financial statements. In the opinion of management, all adjustments and reclassifications considered necessary in order to make the financial statements not misleading and for a fair and comparable presentation have been included and are of a normal recurring nature. Operating results for the three months ended March 31, 2024 are not necessarily indicative of the results that may be expected for the year ending December 31, 2024 or any future periods. The accompanying unaudited condensed consolidated financial statements should be read in conjunction with the Company’s Annual Report on Form 10-K for the year ended December 31, 2023 filed with the SEC on March 29, 2024.

 

Recent Accounting Pronouncements – In August 2020, the Financial Accounting Standards Board issued ASU 2020-06 Debt – Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging – Contracts in Entity’s Own Equity (Subtopic 815-40). The update simplifies accounting related to convertible debt instruments. The standard is effective for fiscal years beginning after December 15, 2023 including interim periods within those fiscal years. The Company is currently evaluating the effect this standard will have on its financial statements.

 

In November 2023, FASB issued ASU 2023-07, Segment Reporting (Topic 280) - Improvements to Reportable Segment Disclosures, which enhances the disclosures required for operating segments in the Company’s annual and interim consolidated financial statements. ASU 2023-07 is effective for the Company in our annual reporting for fiscal 2024 and for interim period reporting beginning in fiscal 2025 on a retrospective basis, with all required disclosures to be made for all prior periods presented in the consolidated financial statements. Early adoption is permitted. The Company is currently evaluating the impact of ASU 2023-07 on its consolidated financial statements.

 

In December 2023, FASB issued ASU 2023-09, Income Taxes (Topic 740) - Improvements to Income Tax Disclosures, which enhances the disclosures required for income taxes in the Company’s annual consolidated financial statements. Notably, this ASU requires entities to disclose specific categories in the effective tax rate reconciliation and provide additional information for reconciling items that meet a quantitative threshold. ASU 2023-09 is effective for the Company in its annual reporting for fiscal 2025 on a prospective basis. Early adoption and retrospective reporting are permitted. The Company is currently evaluating the impact of ASU 2023-09 on its consolidated financial statements.

 

 

7

---

Table of Contents

 

 

(2)       Current Developments and Liquidity

 

Business Condition – Since inception, the Company has incurred substantial losses. During the three months ended March 31, 2024, the Company reported a net loss of $154,051 and net cash provided by operating activities of $412,444. During the three months ended March 31, 2023, the Company reported net loss of $148,054 and net cash provided by operating activities of  $981,311.

 

During the three months ended March 31, 2024, the Company continued its focus on its strongest long-standing core business segments which consist of its Theranostics Products (previously called Radiochemical Products), Cobalt Products, and Nuclear Medicine Standards, and in particular, the pursuit of new business opportunities within those segments. Additionally, the Company has begun to focus on the start-up of its Medical Device segment which includes assets purchased from AMICI in 2023 and investing into an EasyFill Automated Iodine Capsule System.

 

The Company holds a Nuclear Regulatory Commission (NRC) construction and operating license for the depleted uranium facility in, as well as the property agreement with, Lea County, New Mexico, where the plant is intended to be constructed. The NRC license for the de-conversion facility is a forty (40) year operating license and is the first commercial license of this type issued in the United States.  There are no other companies with a similar license application under review by the NRC. Therefore, the NRC license represents a significant competitive barrier, and the Company considers it a valuable asset.

 

The Company expects that cash from operations, equity or debt financing, and its current cash balance will be sufficient to fund operations for the next twelve months. Future liquidity and capital funding requirements will depend on numerous factors, including commercial relationships, technological developments, market factors, available credit, and management of redeemable convertible preferred stock. There is no assurance that additional capital and financing will be available on acceptable terms to the Company or at all.

 

 

8

---

Table of Contents

 

(3)       Net Income (Loss) Per Common Share - Basic and Diluted

 

For the three months ended March 31, 2024, the Company had 25,812,500 stock options outstanding, 6,750,000 restricted stock units outstanding and 4,063 outstanding shares of Series C redeemable convertible preferred stock (Series C Preferred Stock), each of which were not included in the computation of diluted income (loss) per common share because they would be anti-dilutive.

 

For the three months ended March 31, 2023, the Company had 26,037,500 stock options outstanding, and 4,063 outstanding shares of Series C Preferred Stock, each of which were not included in the computation of diluted income (loss) per common share because they would be anti-dilutive.

 

The table below shows the calculation of diluted shares:

 

		3 Months Ended
		March 31,				March 31,
		2024				2023
Weighted average common shares outstanding - basic			520,167,183				515,566,825
Effects of dilutive shares
Stock Options			—				—
Series C Preferred Stock			—				—
Weighted average common shares outstanding - diluted			520,167,183				515,566,825

 

The table below summarizes common stock equivalents outstanding at March 31, 2024 and 2023:

 

		March 31,
		2024				2023
Stock options			25,812,500				26,037,500
Restricted Stock Units			6,750,000				—
Shares of Series C Preferred Stock			40,630,000				40,630,000
			73,192,500				66,667,500

 

9

---

Table of Contents

 

(4)       Investment and Business Consolidation

 

In 2021, the Company acquired all of the remaining membership interests of RadQual, making RadQual a wholly-owned subsidiary of the Company. As TI Services is a 50/50 joint venture between the Company and RadQual, TI Services is also a wholly-owned subsidiary of the Company.

 

In June 2023, the Company executed an agreement to buy medical devices and related assets and intellectual property rights from AMICI, Inc. The Company has been working on transfers of U.S. Food and Drug Administration (FDA) 510K device registrations and startup of manufacturing. These assets and expenses are included in the Medical Device Segment; launch of these products is expected later in 2024.

 

(5)       Stockholders’ Equity, Options, and Warrants

 

Employee Stock Purchase Plan

 

The Company has an employee stock purchase plan pursuant to which employees of the Company may participate to purchase shares of common stock at a discount. During the three months ended March 31, 2024 and 2023, the Company issued 43,495 and 102,855 shares of common stock, respectively, to employees under the employee stock purchase plan for proceeds of $1,479 and $2,622, respectively. As of  March 31, 2024, 2,181,049 shares of common stock remain available for issuance under the employee stock purchase plan.

 

Stock-Based Compensation Plans

 

2015 Incentive Plan - In April 2015, the Company’s Board of Directors approved the International Isotopes Inc. 2015 Incentive Plan (as amended, the 2015 Plan), which was subsequently approved by the Company’s shareholders in July 2015. The 2015 Plan was amended and restated in July 2018 to increase the number of shares authorized for issuance under the 2015 Plan by an additional 20,000,000 shares. The 2015 Plan provides for the grant of incentive and non-qualified stock options, stock appreciation rights, restricted stock, restricted stock units, performance shares and units, and other stock or cash-based awards. At March 31, 2024, there were 19,267,546 shares available for issuance under the 2015 Plan.

 

Employee/Director Grants - The Company accounts for issuances of stock-based compensation to employees by recognizing, as compensation expense, the cost of employee services received in exchange for equity awards. The compensation expense is based on the grant date fair value of the award. Stock option compensation expense is recognized over the period during which an employee is required to provide service in exchange for the award (the vesting period).

 

Non-Employee Grants - The Company accounts for its issuances of stock-based compensation to non-employees by recognizing compensation expense based on the grant date fair value of the award. Stock option compensation expense is recognized over the vesting period for the award.

 

10

---

Table of Contents

 

Option awards outstanding as of  March 31, 2024, and changes during the three months ended March 31, 2024, were as follows:

 

										Weighted
						Weighted				Average
						Average				Remaining				Aggregate
Fixed Options		Shares				Exercise Price				Contractual Life				Intrinsic Value
Outstanding at December 31, 2023			24,787,500			$	0.05				5.4			$	17,000
Granted			1,025,000				0.04
Exercised			—				—
Expired			—				—
Forfeited			—				—
Outstanding at March 31, 2024			25,812,500				0.05				5.4			$	17,000
Exercisable at March 31, 2024			20,182,500			$	0.05				4.5			$	16,000

 

The intrinsic value of outstanding and exercisable shares is based on the closing price of the Company’s common stock on the OTCQB of $0.04 per share on March 28, 2024, the last trading day of the three months ended  March 31, 2024.

 

As of  March 31, 2024, there was $85,459 of unrecognized compensation expense related to stock options that will be recognized over a weighted-average period of 1.86 years.

 

Total stock-based compensation expense for the three months ended March 31, 2024 and 2023 was $62,650 and $159,878, respectively.

 

During the three months ended March 31, 2024, the Company granted an aggregate of 1,025,000 qualified stock options to 2 of its employees. These options vest over a five-year period with the first vesting on the first anniversary of the date of grant and expiration at ten-year anniversary for all grants. The exercise price for these granted options was $0.04 and $0.05 per share. The options issued during the three months ended March 31, 2024 have a fair value of $29,240, as estimated on the date of issue using the Black-Scholes options pricing model with the following weighted-average assumptions: risk free interest rate of 4.06% to 4.23%, expected dividend yield rate of 0%, expected volatility of 73.41% to 79.21% and an expected life between 5 and 7 years.

 

 

Restricted Stock Units outstanding as of  March 31, 2024, and changes during the three months ended March 31, 2024, were as follows:

 

Non-Vested Restricted Stock Units		Number of restricted stock units		Weighted average grant-date fair value
Outstanding at December 31, 2023		7,000,000		$ 0.04
Granted		—
Vested		(250,000)		0.04
Forfeited / Cancelled		—
Outstanding at March 31, 2024		6,750,000		$ 0.04

 

 

 

11

---

Table of Contents

 

Preferred Stock

 

At March 31, 2024, there were 4,063 shares of the Series C Preferred Stock outstanding with a mandatory redemption date of February 2025 at $1,000 per share in either cash or shares of common stock, at the option of the holder. Holders of the Series C Preferred Stock do not have any voting rights except as required by law and in connection with certain events as set forth in the Statement of Designation of the Series C Preferred Stock. The Series C Preferred Stock accrues dividends at a rate of 6% per annum, payable annually on February 17th of each year. The Series C Preferred Stock are convertible at the option of the holders at any time into shares of the Company common stock at an initial conversion price equal to $0.10 per share, subject to adjustment. If the volume-weighted average closing price of the Company’s common stock over a period of 90 consecutive trading days is greater than $0.25 per share, the Company may redeem all or any portion of the outstanding Series C Preferred Stock at the original purchase price per share plus any accrued and unpaid dividends, payable in shares of common stock.

 

During the three months ended March 31, 2024 and 2023, dividends paid to holders of the Series C Preferred Stock totaled $243,030 and $243,780 respectively. Some holders of the Series C Preferred Stock elected to settle their dividend payments with shares of the Company’s common stock in lieu of cash. For the three months ended March 31, 2024 and 2023, the Company issued an aggregate of 1,808,400 and 2,266,500 shares of common stock, respectively, in lieu of dividend payments in the aggregate of $90,420 and $90,660, respectively, with the remaining dividend payable settled in cash of $152,610 and $153,120, respectively.

 

 

12

---

Table of Contents

 

 

(6)        Debt

 

In December 2013, the Company entered into a promissory note agreement with its then Chairman of the Board and one of our major shareholders, pursuant to which we borrowed $500,000 (the 2013 Promissory Note). The 2013 Promissory Note is secured and bears interest at 6% per annum and was originally due June 30, 2014. According to the terms of the 2013 Promissory Note, at any time, the lenders may settle any or all of the principal and accrued interest with shares of our common stock. In December 2019, the 2013 Promissory Note was modified to extend the maturity date to December 31, 2021, with all remaining terms unchanged. In January 2022, the 2013 Promissory Note was modified to extend the maturity date to December 31, 2023, with all remaining terms unchanged. In February 2024, the 2013 Promissory Note was modified to extend the maturity date to March 31, 2026, with all remaining terms unchanged. At March 31, 2024, accrued interest payable on the 2013 Promissory Note was $309,234. 

 

In April 2018, the Company borrowed $120,000 from its then Chief Executive Officer and Chairman of the Board pursuant to a promissory note (the 2018 Promissory Note). The 2018 Promissory Note accrues interest at 6% per annum, which is payable upon maturity of the 2018 Promissory Note. The 2018 Promissory Note was originally unsecured and originally matured on August 1, 2018. At any time, the holder of the 2018 Promissory Note may elect to have any or all of the principal and accrued interest settled with shares of our common stock based on the average price of the shares over the previous 20 trading days. In June 2018, the 2018 Promissory Note was modified to extend the maturity date to March 31, 2019 with all other provisions remaining unchanged. In February 2019, the 2018 Promissory Note was modified to extend the maturity date to July 31, 2019 with all other provisions remaining unchanged. In July 2019, the 2018 Promissory Note was modified to extend the maturity date to January 31, 2020 with all other provisions remaining unchanged. In December 2019, the 2018 Promissory Note was modified to extend the maturity date to December 31, 2021, the note was also modified to become secured by company assets, with all other provisions remaining unchanged. In December 2021, the 2018 Promissory Note was modified to extend the maturity date to December 31, 2023, with all remaining terms unchanged. In December 2023, the 2018 Promissory Note was modified to extend the maturity date to January 31, 2025, with all remaining terms unchanged. In February 2024, the 2018 Promissory Note was modified to extend the maturity date to March 31, 2026, with all remaining terms unchanged. At March 31, 2024, accrued interest on the 2018 Promissory Note totaled $42,770.

 

In December 2019 and February 2020, the Company borrowed an aggregate of $1,000,000 from four of the Company’s major shareholders pursuant to a promissory note (the 2019 Promissory Note). The 2019 Promissory Note bears an interest rate of 4% annually and was originally due December 31, 2022. According to the terms of the 2019 Promissory Note, at any time, the lenders may settle any or all of the principal and accrued interest with shares of the Company’s common stock based on the average closing price of the Company’s common stock for the 20 days preceding the payment. In connection with the 2019 Promissory Note, the lenders were issued warrants totaling 30,000,000 warrants to purchase shares of the Company’s common stock at $0.045 per share (the Class O Warrants). The fair value of these Class O Warrants issued totaled $446,079 and was recorded as a debt discount and was amortized over the life of the 2019 Promissory Note. The Company calculated a beneficial conversion feature of $315,643 which was accreted to interest expense over the life of the 2019 Promissory Note. In December 2022, the 2019 Promissory Note was modified to extend the maturity date to December 31, 2024, with all remaining terms unchanged. In February 2024, the 2019 Promissory Note was modified to extend the maturity date to March 31, 2026, with all remaining terms unchanged. At March 31, 2024, the accrued interest on the 2019 Promissory Note totaled $169,131.

 

In June 2023, the Company executed an asset purchase agreement with AMICI, Inc. for purchase of medical devices and related assets and intellectual property rights. As part of the asset purchase agreement, the Company entered a promissory agreement for $427,100. According to the terms of the agreement, the Company is to pay the seller a minimum of $10,000 per month for a period of 45 months. The amount due is not subject to interest until the 25th month after the anniversary of the closing of the agreement. At March 31, 2024, the balance of this agreement was $362,100.

 

13

---

Table of Contents

 

(7)       Commitments and Contingencies

 

Dependence on Third Parties

 

The production of High Specific Activity Cobalt is dependent upon the U.S. Department of Energy (DOE), and its prime operating contractor, which controls the Advanced Test Reactor (ATR) and laboratory operations at the ATR located outside of Idaho Falls, Idaho. In October 2014, the Company signed a ten-year contract with the DOE for the irradiation of cobalt targets for the production of cobalt-60. The Company will be able to purchase cobalt targets for a fixed price per target with an annual 5% escalation in price. The contract term is October 1, 2014 through September 30, 2024. The Company is currently working on an extension to this contract. Also, the DOE may end the contract if it determines termination is necessary for the national defense, security or environmental safety of the United States.

 

Sales of our most predominant Theranostics products are dependent upon a few key suppliers. An interruption in production by any of these individual suppliers could have an immediate negative impact upon radiochemical sales until material could be purchased from alternate suppliers including obtaining regulatory approval to use material from alternative suppliers if necessary.

 

The Nuclear Medicine Reference and Calibration Standard products sold by the Company are dependent upon certain radioisotopes that are supplied to the Company through agreements with several suppliers. A loss of any of these suppliers could adversely affect operating results by causing a delay in production or a possible loss of sales. In three months ended March 31, 2024, there was a global shortage of Cobalt-57 isotopes, a key isotope for this business segment that resulted in lost sales. We have added a supplier in 2024 and continue to search for additional means to produce and procure certain critical isotopes. However, we anticipate periodic shortages to continue for the remainder of 2024.

 

 

Contingencies

 

Because all the Company’s business segments involve the handling or use of radioactive material, the Company is required to have an operating license from the NRC and specially trained staff to handle these materials. The Company has amended this operating license numerous times to increase the amount of material permitted within the Company’s facility. Although this license does not currently restrict the volume of business operations performed or projected to be performed in the upcoming year, additional processing capabilities and license amendments could be implemented that would permit processing of other reactor-produced radioisotopes by the Company. The financial assurance required by the NRC to support this license has been provided for with a surety bond held with North American Specialty Insurance Company which is supported by a restricted money market account held with Merrill Lynch. In the three months ended March 31, 2024 the Company funded an additional $484,000 to this restricted money market account. At  March 31, 2024, the balance of this account was $1,378,279.

 

In August 2011, the Company received land from Lea County, New Mexico, pursuant to a Project Participation Agreement (PPA), whereby the land was deeded to the Company for no monetary consideration. In return, the Company committed to construct a uranium de-conversion and Fluorine Extraction Process facility on the land.  In order to retain title to the property, the Company was to begin construction of the de-conversion facility no later than December 31, 2014, and complete Phase I of the project and have hired at least 75 persons to operate the facility no later than December 31, 2015, although commercial operations need not have begun by that date. In 2015, the Company negotiated a modification to the PPA that extended the start of construction date to December 31, 2015, and the hiring milestone to December 31, 2016. Those dates were also not met. The Company has been in discussions with commercial companies possibly interested in purchasing rights to this project. Should those discussions come to fruition the Company plans to negotiate a second modification to the PPA agreement to further extend the commitment dates. If the Company is not successful in reaching an amendment to extend the performance dates in the PPA., then it may, at its sole option, either purchase or re-convey the property to Lea County, New Mexico.  The purchase price of the property would be $776,078, plus interest at the annual rate of 5.25% from the date of the closing to the date of payment.  The Company has not recorded the value of this property as an asset and will not do so until such time that sufficient progress on the project has been made to meet the Company’s obligations under the agreements for permanent transfer of the title. On February 8, 2024, the Company entered into a definitive agreement to sell all of our assets related to the Fluorine Products segment and the Planned Uranium De-Conversion Facility, including the Lea County land, ("DUF6 Asset Sale"). The Company expects to close the agreement within 12 to 24 months of signing. Closing is contingent on various conditions being met, including approvals and agreements by the NRC and other third parties.

 

14

---

Table of Contents

 

(8)      Revenue Recognition

 

Revenue from Product Sales

 

The following tables present the Company’s revenue disaggregated by business segment and geography, based on management’s assessment of available data:

 

		Three Months Ended March 31, 2024																Three Months Ended March 31, 2023
						Outside				Total				% of Total								Outside				Total				% of Total
		U.S.				U.S.				Revenues				Revenues				U.S.				U.S.				Revenues				Revenues
Theranostics Products		$	1,747,321			$	157,761			$	1,905,082				66	%		$	1,625,116			$	137,280			$	1,762,396				57	%
Cobalt Products			215,368				18,600				233,968				8	%			142,158				16,150				158,308				5	%
Nuclear Medicine Products			535,429				229,979				765,408				26	%			871,588				297,243				1,168,831				38	%
Medical Devices Products			—				—				—				0	%			—				—				—				0	%
Fluorine Products			—				—				—				0	%			—				—				—				0	%
		$	2,498,118			$	406,340			$	2,904,458				100	%		$	2,638,862			$	450,673			$	3,089,535				100	%

 

The Company’s revenue consists primarily of distribution of theranostics including sodium iodide I-131 drug product, calibration and reference standards manufactured for use in the nuclear medicine industry, and cobalt source manufacturing. With the exception of certain unique products, the Company’s normal operating cycle is considered to be one year. Due to the time required to produce some cobalt products, the Company’s operating cycle for those products is considered to be two to three years. Accordingly, preliminary payments received on cobalt contracts where shipment has not taken place have been recorded as unearned revenue on the Company’s condensed consolidated balance sheets and classified under current or long-term liabilities, depending upon estimated ship dates. For the three months ended March 31, 2024, the Company reported current unearned revenue of $977,168. For the period ended December 31, 2023, the Company reported current unearned revenue of $932,682. These unearned revenues will be recognized as revenue in the periods during which the cobalt shipments take place.

 

Contract Balances

 

The Company records a receivable when it has an unconditional right to receive consideration after the performance obligations are satisfied.  As of  March 31, 2024, and December 31, 2023, accounts receivable totaled $1,355,362 and $1,469,298, respectively.  For the three months ended March 31, 2024, the Company did not incur material impairment losses with respect to its receivables.

 

(9)      Leases

 

The Company leases office and warehouse space under operating leases. Right-of-use assets represent the Company’s right to use an underlying asset for the lease term and lease liabilities represent its obligation to make lease payments under the lease. Operating lease, right-of-use assets, and liabilities are recognized at the lease commencement date based on the present value of lease payments over the reasonably certain lease term. The implicit rates with the Company’s operating leases are generally not determinable and the Company uses its incremental borrowing rate at the lease commencement date to determine the present value of its lease payments. The determination of the Company’s incremental borrowing rate requires judgement. The company determines its incremental borrowing rate for each lease using its then-current borrowing rate. Certain of the Company’s leases include options to extend or terminate the lease. The Company establishes the number of renewal options periods used in determining the operating lease term based upon its assessment at the inception of the operating lease. The option to renew the lease may be automatic, at the option of the Company, or mutually agreed to between the landlord and the Company. Once the facility lease term has begun, the present value of the aggregate future minimum lease payments is recorded as a right-of-use asset. Lease expense is recognized on a straight-line basis over the term of the lease.

 

15

---

Table of Contents

 

		Three Months Ended March 31,
		2024				2023
Operating lease costs		$	71,777			$	75,366
Short-term operating lease costs			1,800				2,040
Financing lease expense:
Amortization of right-of-use assets			755				2,249
Interest on lease liabilities			44				161
Total financing lease expense			799				2,410
Total lease expense		$	74,376			$	79,816
Right-of-use assets obtained in exchange for new operating lease liabilities		$	—			$	—
Right-of-use assets obtained in exchange for new financing lease liabilities		$	—			$	—
Weighted-average remaining lease term (years) - operating leases			10.8				11.8
Weighted-average remaining lease term (years) - financing leases			0.7				1.0
Weighted-average discount rate - operating leases			6.75	%			6.75	%
Weighted-average discount rate - financing leases			6.75	%			7.68	%

 

The future minimum payments under these operating lease agreements are as follows:

 

		Operating Leases				Financing Leases
2024 (excluding the three-months ended March 31, 2024)		$	215,331			$	—
2025			287,108				2,130
2026			287,108				—
2027			287,108				—
2028			287,108				—
Thereafter			1,738,084				—
Total minimum lease obligations			3,101,847				2,130
Less-amounts representing interest			(903,903	)			(53	)
Present value of minimum lease obligations			2,197,944				2,077
Current maturities			(143,121	)			(2,077	)
Lease obligations, net of current maturities		$	2,054,823			$	—

 

16

---

Table of Contents

 

(10)        Segment Information

 

In 2024, the Company has five reportable segments which include: Theranostics Products, Cobalt Products, Nuclear Medicine Standards, Medical Device Products, and Fluorine Products.

 

Information regarding the operations and assets of these reportable business segments is contained in the following table:

 

		Three months ended March 31,
Sale of Product		2024				2023
Theranostics Products		$	1,905,082			$	1,762,396
Cobalt Products			233,968				158,308
Nuclear Medicine Standards			765,408				1,168,831
Medical Device Products			—				—
Fluorine Products			—				—
Total Segments			2,904,458				3,089,535
Corporate revenue			—				—
Total Consolidated		$	2,904,458			$	3,089,535

 

		Three months ended March 31,
Depreciation and Amortization		2024				2023
Theranostics Products		$	9,046			$	7,159
Cobalt Products			23,311				12,834
Nuclear Medicine Standards			32,978				29,209
Medical Device Products			—				—
Fluorine Products			26,095				28,970
Total Segments			91,430				78,172
Corporate depreciation and amortization			10,017				9,096
Total Consolidated		$	101,447			$	87,268

 

		Three months ended March 31,
Segment Income (Loss)		2024				2023
Theranostics Products			$ 1,013,464				$ 767,112
Cobalt Products			(66,325)				(26,245)
Nuclear Medicine Standards			9,497				128,785
Medical Device Products			(28,511)				—
Fluorine Products			21,249				(29,239)
Total Segments			949,374				840,413
Corporate loss			(1,103,425)				(988,467)
Net Income			$ (154,051)				$ (148,054)

 

		Three months ended March 31,
Expenditures for Segment Assets		2024				2023
Theranostics Products		$	93,924			$	—
Cobalt Products			—				—
Nuclear Medicine Standards			49,038				3,130
Medical Device Products							—
Fluorine Products			—				—
Total Segments			142,962				3,130
Corporate purchases			27,959				49,072
Total Consolidated		$	170,921			$	52,202

 

		March 31,				December 31,
Segment Assets		2024				2023
Theranostics Products		$	1,116,697			$	849,351
Cobalt Products			468,901				274,513
Nuclear Medicine Standards			2,514,148				2,986,458
Medical Device Products			552,100				552,100
Fluorine Products			4,954,023				4,980,118
Total Segments			9,605,869				9,642,540
Corporate assets			7,213,442				7,262,547
Total Consolidated		$	16,819,311			$	16,905,087

 

17

---

Table of Contents

 

ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

 

This Quarterly Report on Form 10-Q (the “Quarterly Report”) contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. All statements, other than statements of historical fact, including statements regarding industry prospects and future results of operations or financial position, made in this Quarterly Report are forward-looking statements. Words such as “anticipates,” “believes,” “should,” “expects,” “future,” “intends” and similar expressions identify forward-looking statements. Forward-looking statements reflect management’s current expectations, plans or projections, and are inherently uncertain. Actual results could differ materially from management's expectations, plans or projections. Readers are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date of this Quarterly Report. Certain risks and uncertainties that could cause our actual results to differ significantly from management’s expectations are described in the risk factors set forth in our Annual Report on Form 10-K for the fiscal year ended December 31, 2023 filed with the Securities and Exchange Commission (SEC) on March 29, 2024 and in the other reports we file with the SEC. These factors describe some but not all of the factors that could cause actual results to differ significantly from management’s expectations. We undertake no obligation to update any forward-looking statements to reflect events or circumstances after the date hereof or to reflect the occurrence of unanticipated events. Readers are urged, however, to review the risks and other factors set forth in the reports that we file from time to time with the SEC.

 

BUSINESS OVERVIEW

 

International Isotopes Inc., its wholly-owned subsidiaries (including RadQual, LLC and TI Services, LLC) (collectively, the "Company", "we", "our", or "us") manufacture a full range of nuclear medicine calibration and reference standards, manufacture a range of cobalt products, and distribute sodium iodide I-131 as a generic drug. We own 100% interest of RadQual, LLC (RadQual), a global supplier of molecular imaging quality control and calibration devices. As TI Services, LLC is a 50/50 joint venture between the Company and RadQual, TI Services, LLC is also a wholly-owned subsidiary of the Company.

 

Our business consists of the following five business segments:

 

Theranostics Products. Our Theranostics Products segment (formerly called Radiochemical Products) includes production and distribution of our FDA approved generic sodium iodide I-131 drug product for the treatment of hyperthyroidism and carcinoma of the thyroid. We are the only U.S. Company distributing this generic drug product. This segment also includes distribution of certain other radiochemical products and contract manufacturing of radiopharmaceutical products for our customers.

 

Cobalt Products. Our Cobalt Products segment includes the production of bulk cobalt (cobalt-60), fabrication of cobalt capsules for radiation therapy and various industrial applications, and recycling of expended cobalt sources. We are the only company in the U.S. that can provide all these unique services. There has been a significant increase in regulation by the Nuclear Regulatory Commission (NRC) in recent years that has created a significant barrier to new entrants into this market. The Company has a contract in place with the U.S. Department of Energy (DOE) for the production of high specific activity cobalt in the Advanced Test Reactor (ATR) in Idaho. This agreement will be in effect until October 2024.

 

Nuclear Medicine Standards. Our Nuclear Medicine Standards segment consists of the manufacture of sources and standards associated with Single Photon Emission Computed Tomography (SPECT) and Positron Emission Tomography (PET) imaging. These sources are used for indication of patient positioning for SPECT imaging, SPECT camera operational testing, and calibration of dose measurement equipment. Revenue from nuclear medicine products includes consolidated sales from TI Services, LLC (TI Services), a 50/50 joint venture that we formed with RadQual in December 2010 to distribute our products, as well as consolidated sales from RadQual. Our nuclear medicine standards products include a host of specially designed items used in the nuclear medicine industry. In addition to the manufacture of these products, we have developed a complete line of specialty packaging for the safe transport and handling of these products.

 

 

 

 

Medical Devices. A new reportable business segment starting in 2024. While we have not yet commercialized any medical devices, we have invested in this segment throughout 2023 and 2024 and anticipate additional investments for the remainder of 2024 with commercialization of products starting later in 2024. In June 2023, we acquired several medical devices with related assets and intellectual property rights from AMICI, Inc. We have been working on start-up of manufacturing. Additionally, the Company has investments in a joint venture arrangement for the startup of our EasyFill Automated Iodine Capsule System.

 

Fluorine Products. We established the Fluorine Products segment in 2004 in conjunction with the development and operation of the proposed depleted uranium de-conversion facility in Lea County, New Mexico. Near the end of 2013, due to changes in the nuclear industry, we placed further engineering work for this project on hold. We continue to hold discussions with potential future customers seeking this type of service, however, further development activity within this segment will be deferred until market and industry conditions change to justify resuming design and construction of the facility. We have been in discussions with commercial companies possibly interested in purchasing rights to this project. In the meantime, we expect to continue to incur some costs associated with the maintenance of licenses and other necessary project investments, and to continue to keep certain agreements in place that will support resumption of project activities at the appropriate time. On February 8, 2024, we entered into a definitive agreement to sell all of our assets related to the Fluorine Products segment and the Planned Uranium De-Conversion Facility ("DUF6 Asset Sale"). We expect to close the agreement within 12 to 24 months of signing. Closing is contingent on various conditions being met, including approvals and agreements by the NRC and other third parties.

 

 

 

 

 

RESULTS OF OPERATIONS

 

Three Months Ended March 31, 2024, Compared to Three Months Ended March 31, 2023

 

Revenue for the three months ended March 31, 2024 was $2,904,458 as compared to $3,089,535 for the same period in 2023, an overall decrease of $185,077, or approximately 6%. This decrease in revenue was the result of decreased revenue in our Nuclear Medicine Standards segment due to a global shortage of Cobalt-57 isotope partially offset by increased revenues in our Theranostics Products and Cobalt Products, as discussed in more detail below.

 

The following table presents a period-to-period comparison of total revenue by segment for the three months ended March 31, 2024 and 2023: 

 

		For the three				For the three
		months ended				months ended
		March 31,				March 31,
Sale of Product		2024				2023				$ change				% change
Theranostics Products		$	1,905,082			$	1,762,396			$	142,686				8	%
Cobalt Products			233,968				158,308				75,660				48	%
Nuclear Medicine Standards			765,408				1,168,831				(403,423	)			-35	%
Medical Device Products			—				—				—				—	%
Fluorine Products			—				—				—				—	%
Total Consolidated		$	2,904,458			$	3,089,535			$	(185,077	)			-6	%

 

Cost of sales decreased to $1,038,347 for the three months ended March 31, 2024 from $1,309,499 for the same period in 2023. This is a decrease of $271,152, or approximately 21%. The decrease in cost of sales in the three-month comparison was primarily due to the decreased revenues and increased gross profit percentages in our segments, as discussed in detail below. Gross profit for the three months ended March 31, 2024 was $1,866,111, compared to $1,780,036 for the same period in 2023. This represents an increase in gross profit of $86,075, or approximately 5%.

 

The following table presents cost of sales and gross profit data for each of our business segments for the three months ended March 31, 2024 and 2023:

 

		For the three								For the three
		months ended				% of				months ended				% of
		March 31,				Total Sales				March 31,				Total Sales
		2024				2024				2023				2023
Total Sales		$	2,904,458							$	3,089,535
Cost of Sales
Theranostics Products		$	576,411				20	%		$	630,338				20	%
Cobalt Products			109,036				4	%			90,961				3	%
Nuclear Medicine Standards			352,900				12	%			588,200				19	%
Medical Device Products			—				—	%
Fluorine Products			—				—	%			—				—	%
Total Segments			1,038,347				36	%			1,309,499				42	%
Gross Profit		$	1,866,111							$	1,780,036
Gross Profit %			64	%							58	%

 

 

Operating expense increased approximately 11% to $2,132,307 for the three months ended March 31, 2024, from $1,927,608 for the same period in 2023. This increase of $204,699 is due to a 21% increase in General, Administrative, and Consulting Expenses and a 51% increase in Research and Development costs offset by a 4% decrease in Salaries and Contract Labor Expenses. The increase in General, Administrative, and Consulting Expenses is primarily the result of increased professional expenses that occurred during the three months ended March 31, 2024, as compared to the same period in 2023. The increase in Research and Development cost is due to increased expenses related to product development during the three months ended March 31, 2024, as compared to the same period in 2023. The decrease in Salaries and Contract Labor Expenses is primarily due to decreased officer compensation.

 

The following table presents a comparison of total operating expense for the three months ended March 31, 2024 and 2023:

 

		For the three		For the three
		months ended		months ended
		March 31,		March 31,
Operating Costs and Expenses:		2024		2023		% change		$ change
Salaries and Contract Labor		$ 940,503		$ 975,183		(4%)		$ (34,680)
General, Administrative and Consulting		1,003,557		827,983		21%		175,574
Research and Development		188,247		124,442		51%		63,805
Total operating expenses		$ 2,132,307		$ 1,927,608		11%		$ 204,699

 

 

 

Other income was $160,720 for the three months ended March 31, 2024 as compared to $63,412 for the same period in 2023. This is an increase of $97,308, or approximately 153%, was due to an increase in miscellaneous income.

 

Interest expense for the three months ended March 31, 2024 was $81,303, compared to $82,980 for the same period in 2023. This is a decrease of $1,677, or approximately 2%. Interest expense includes dividends accrued on our Series C Preferred Stock. As discussed below, we issued Series C Preferred Stock in February 2017 and May 2017. For the three months ended March 31, 2024 and 2023, we accrued dividends payable of $59,445 for the three months ended March 31, 2024 and $60,945 for the same period in 2023, which have been recorded as interest expense. See Note 7 “Debt” to our unaudited consolidated financial statements in this Quarterly Report for additional information about our indebtedness and the associated interest expense.

 

Our net loss for the three months ended March 31, 2024, was $154,051 compared to net loss of $148,054 for the same period in 2023. This is an increase in net loss of $5,997 that is largely the result of the decrease in revenue in our Nuclear Medicine Standards Products segment partially offset by increased revenue in our Theranostics Products and Cobalt Products segments and increased gross profit percentages for the three months ended March 31, 2024, as compared to the same period in 2023.

 

Theranostics Products. Revenue from the sale of theranostics products for the three months ended March 31, 2024 was $1,905,082, compared to $1,762,396 for the same period in 2023. This is an increase of $142,686, or approximately 8% during the three months ended March 31, 2024. The increase is the result of continued increased sales of our generic sodium iodide I-131 drug product. We expect continued sales growth for our Theranostics products going forward, primarily from the sale of our generic sodium iodide I-131 drug product.

 

Gross profit of theranostics products for the three months ended March 31, 2024 was $1,328,671, compared to $1,132,058 for the same period in 2023, and gross profit percentages were approximately 70% and 64% for the three months ended March 31, 2024 and 2023, respectively. Cost of sales for theranostics products decreased to $576,411 for the three months ended March 31, 2024, as compared to $630,338 for the same period in 2023. This is a decrease of $53,927, or approximately 9%, and was primarily the result of increased utilization and pricing for our raw material isotope. Operating expense for this segment decreased to $315,207 for the three months ended March 31, 2024, compared to $364,946 for the same period in 2023. This decrease in operating expense of $49,739, or approximately 14%. This segment reported net income of $1,013,464 for the three months ended March 31, 2024, as compared to net income of $767,112 for the same period in 2023. The increase in net income of $246,352 is the result of increases in revenue, increased gross profit percentage, and decreased expenses.

 

 

Cobalt Products. Revenue from the sale of cobalt products for the three months ended March 31, 2024 was $233,968, compared to $158,308 for the same period in 2023. This represents an increase of $75,660, or approximately 48%. The increase was primarily due to the timing of cobalt sealed source manufacturing sales. Large value sales of high activity cobalt sources occur at various times throughout the year. Frequently the timing of these sales can have a significant impact on period comparisons.

 

Cost of sales for the three months ended March 31, 2024, was $109,036, as compared to $90,961, for the same period in 2023. Gross profit for cobalt products for the three months ended March 31, 2024 was $124,932 compared to $67,347 for the same period in 2023. This is an increase of $57,585, or approximately 86% and is attributable to increased gross profit percentage for the sales the three months ended March 31, 2024. Operating expense in this segment increased to $191,257 for the three months ended March 31, 2024, from $93,592 for the same period in 2023. This is an increase of $97,665, or approximately 104%. This increase in operating expenses for the three months ended March 31, 2024 is primarily the result of increased waste disposal costs that occurred during the three months ended March 31, 2024 as compared to the same period in 2023. Our net loss for cobalt products was $66,325 for the three months ended March 31, 2024, as compared to a net loss of $26,245 for the same period in 2023. The increase in net loss of $40,080, or approximately 153%, was attributable to the increased operating expenses.

 

Nuclear Medicine Standards. Revenue from nuclear medicine products for the three months ended March 31, 2024, was $765,408, compared to $1,168,831 for the same period in 2023. This represents a decrease in revenue of $403,423, or approximately 35%. The decrease is due to a global shortage of Cobalt-57 isotopes during the three months ended March 31, 2024. We continue to maintain a growing backlog of orders and we expect a revenue catch-up upon normalization of the global isotope supply chain.

 

Cost of sales for our nuclear medicine standards segment for the three months ended March 31, 2024, was $352,900, as compared to $588,200 for the same period in 2023. The decrease in cost of sales in the period-to-period comparison of $235,300, or 40%, was due to decreased revenue during the three-month period ended March 31, 2024, as compared to the same period in 2023. Gross profit for our nuclear medicine standards segment for the three months ended March 31, 2024 was $412,508 compared to $580,631 for the same period in 2023, and gross profit percentages were approximately 54% and 50% for the three months ended March 31, 2024 and 2023, respectively. This is a decrease in gross profit of $168,123, or approximately 29%.

 

Operating expense for this segment for the three months ended March 31, 2024 decreased to $403,011, from $451,846 for the same period in 2023. This is an decrease of $48,835, or approximately 11%, and is the result of decreased activity in the segment. Net income for this segment for the three months ended March 31, 2024 was $9,497, compared to a net income of $128,785 for the same period in 2023. This is a decrease in net income of $119,288, or approximately 93% and is the result of decreased revenue.

 

Medical Device Products. For the three months ended March 31, 2024 and March 31, 2023, we had no revenue for our Medical Device Products segment.

 

Operating expense for this segment for the three months ended March 31, 2024 was $28,511 with no operating expenses in the same period in 2023. Expenses include costs for professional services and research and development related to the startup of this new business segment.

 

Fluorine Products. For the three months ended March 31, 2024 and March 31, 2023, we had no revenue for our fluorine products segment.

 

During the three months ended March 31, 2024, we incurred $28,751 of expenses related to items in support of future planning and design for the proposed de-conversion facility, as compared to $29,239 for the same three-month period in 2023.

 

We established the Fluorine Products segment in 2004 to support production and sale of the gases produced using our FEP. The project has been placed on hold since 2013 and we will continue to limit our expenditures to essential items such as maintenance of the NRC license, land use agreements, communication with our prospective FEP product customers, and interface with the State of New Mexico and Lea County officials until such time that we decide to resume the project.

 

On February 8, 2024, we entered into a definitive agreement to sell all of our assets related to the Fluorine Products segment and the Planned Uranium De-Conversion Facility ("DUF6 Asset Sale"). We expect to close the agreement within 12 to 24 months of signing. Closing is contingent on various conditions being met, including approvals and agreements by the NRC and other third parties.

 

 

 

 

LIQUIDITY AND CAPITAL RESOURCES

 

At March 31, 2024, we had cash and cash equivalents of $2,368,496 as compared to $2,688,141 at December 31, 2023. This is an decrease of $319,645 or approximately 12%. For the three months ended March 31, 2024, net cash provided by operating activities was $412,444 and for the three months ended March 31, 2023, net cash provided in operating activities was $981,311. The decrease in cash provided by operating activities was a result of a one-time receipt of other current assets in 2023.

 

This decrease in cash and cash equivalents at period end is mainly due to a $484,000 transfer from cash and cash equivalents to restricted cash to fund an increase to our decommissioning funding plan. Total cash, cash equivalents, and restricted cash increased by $177,882 for the three months ended March 31, 2024.

 

Inventories at March 31, 2024 totaled $934,186, and inventories at December 31, 2023 totaled $927,111. Our inventory consists of work in process material for our Theranostics Products, Cobalt Products, Nuclear Medicine Products, and Medical Device Products segments.

 

Cash used in investing activities was $170,921 for the three months ended March 31, 2024, and cash used in investing activities was $52,202 for the same period in 2023. The cash used in both periods was for the purchase of equipment. 

 

Cash used in financing activities was $63,641 during the three months ended March 31, 2024, and cash used in financing activities for the same period in 2023 was $15,363. During the three months ended March 31, 2024, cash paid for interest was $155,168 and during the same three-month period in 2023, cash paid for interest was $113,855. Additionally, during the three months ended March 31, 2024, we received $1,479 in proceeds from the sale of our common stock through our Employee Stock Purchase Plan, as compared to $2,622 in proceeds from the sale of our common stock through our Employee Stock Purchase Plan in 2023. During the three months ended March 31, 2024, principal payments on notes payable were $64,365, as compared to $15,723 for the same period in 2023.

 

In February March 31, 2024, we paid our annual dividend on the Series C Preferred Stock. Dividends payable totaled $243,780 at that time. Some holders of the Series C Preferred Stock elected to settle their dividend payments with shares of the Company’s common stock in lieu of cash. The Company issued 1,808,400 shares of common stock in lieu of a dividend payment of $90,420. The remaining $153,360 of dividend payable was settled with cash.

 

Total increase in cash for the three months ended March 31, 2024, was $177,882 compared to a cash increase of $913,746 for the same period in 2023.

 

We expect that cash from operations, cash raised via equity financing, and our current cash balance will be sufficient to fund operations for the next twelve months. Our future liquidity and capital funding requirements will depend on numerous factors, including commercial relationships, technological developments, market factors, available credit, and preferred stock shareholders. There is no assurance that additional capital and financing will be available on acceptable terms to the Company or at all.

 

 

Debt

 

In December 2013, we entered into a promissory note agreement with our then Chairman of the Board and one of our major shareholders, pursuant to which we borrowed $500,000 (the 2013 Promissory Note). The 2013 Promissory Note is secured and bears interest at 6% per annum and was originally due June 30, 2014. According to the terms of the 2013 Promissory Note, at any time, the lenders may settle any or all of the principal and accrued interest with shares of our common stock. In June 2014, pursuant to a modification, the maturity date was extended to December 31, 2017. In February 2017, the 2013 Promissory Note was further modified to extend the maturity date to December 31, 2020, with all remaining terms unchanged. In December 2019, the 2013 Promissory Note was further modified to extend the maturity date to December 31, 2021, with all remaining terms unchanged. In January 2022, the 2013 Promissory Note was modified to extend the maturity date to December 31, 2023, with all remaining terms unchanged. In February 2024, the 2013 Promissory Note was modified to extend the maturity date to March 31, 2026, with all remaining terms unchanged. At March 31, 2024, accrued interest payable on the 2013 Promissory Note was $309,234.

 

In April 2018, we borrowed $120,000 from our Chief Executive Officer and Chairman of the Board pursuant to a promissory note (the 2018 Promissory Note). The 2018 Promissory Note accrues interest at 6% per annum, which is payable upon maturity of the 2018 Promissory Note. The 2018 Promissory Note was originally unsecured and originally matured on August 1, 2018. At any time, the holder of the 2018 Promissory Note may elect to have any or all of the principal and accrued interest settled with shares of our common stock based on the average price of the shares over the previous 20 trading days. Pursuant to an amendment to the 2018 Promissory Note in June 2018, the maturity date was extended to March 31, 2019 with all other provisions remaining unchanged. Pursuant to a second amendment to the 2018 Promissory Note in February 2019, the maturity date was extended to July 31, 2019 with all other provisions remaining unchanged. Pursuant to a third amendment to the 2018 Promissory Note in July 2019, the maturity date was extended to January 31, 2020 with all other provisions remaining unchanged. Pursuant to a fourth amendment to the 2018 Promissory Note in December 2019, the maturity date was extended to December 31, 2021, the note was modified to become secured by company assets, with all other provisions remaining unchanged. In December 2021, the 2018 Promissory Note was modified to extend the maturity date to December 31, 2023, with all remaining terms unchanged. In December 2023, the 2018 Promissory Note was modified to extend the maturity date to January 31, 2025, with all remaining terms unchanged. In February 2024, the 2018 Promissory Note was modified to extend the maturity date to March 31, 2026, with all remaining terms unchanged. At March 31, 2024, accrued interest on the 2018 Promissory Note totaled $42,770.

 

In December 2019 and February 2020, we borrowed an aggregate of $1,000,000 from our Chief Executive Officer, Chairman of the Board, former Chairman of the Board, and one of our major shareholders pursuant to a promissory note (the 2019 Promissory Note). The 2019 Promissory Note bears an interest rate of 4% annually and was originally due December 31, 2022. According to the terms of the 2019 Promissory Note, at any time, the lenders may settle any or all of the principal and accrued interest with shares of the Company’s common stock based on the average closing price of the Company’s common stock for the 20 days preceding the payment. In December 2022, the 2019 Promissory Note was modified to extend the maturity date to December 31, 2024, with all remaining terms unchanged. In February 2024, the 2019 Promissory Note was modified to extend the maturity date to March 31, 2026, with all remaining terms unchanged. At March 31, 2024, the accrued interest on the 2019 Promissory Note totaled $169,131.

 

In June 2023, we executed an asset purchase agreement with AMICI, Inc. for purchase of medical devices and related assets and intellectual property rights. As part of the asset purchase agreement, we entered a promissory agreement for $427,100. According to the terms of the agreement, we are to pay the seller a minimum of $10,000 per month for a period of 45 months. The amount due is not subject to interest until the 25th month after the anniversary of the closing of the agreement. At March 31, 2024, the balance of this agreement was $362,100.

 

CRITICAL ACCOUNTING POLICIES

 

From time-to-time, management reviews and evaluates certain accounting policies that are considered to be significant in determining our results of operations and financial position.

 

A description of the Company’s critical accounting policies that affect the preparation of the Company’s financial statements is set forth in the Company’s Annual Report on Form 10-K for the year ended December 31, 2023, filed with the SEC on March 29, 2024.

 

 

ITEM 4. CONTROLS AND PROCEDURES

 

Evaluation of Disclosure Controls and Procedures

 

We maintain disclosure controls and procedures as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended (the Exchange Act), that are designed to ensure that material information relating to us is made known to the officers who certify our financial reports and to other members of senior management and the Board of Directors. These disclosure controls and procedures are designed to ensure that information required to be disclosed in our reports that are filed or submitted under the Exchange Act are recorded, processed, summarized, and reported within the time periods specified in the SEC’s rules and forms. Disclosure controls and procedures include, without limitation, controls and procedures designed to ensure that information required to be disclosed by us in the reports that we file or submit under the Exchange Act is accumulated and communicated to our management, including our principal executive and principal financial officers, or persons performing similar functions, as appropriate, to allow timely decisions regarding required disclosure.

 

Management, with the participation of our Chief Executive Officer and Chief Financial Officer, has evaluated the effectiveness, as of March 31, 2024, of our disclosure controls and procedures. Based on that evaluation, our Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures were effective as of March 31, 2024.

 

Changes in Internal Control over Financial Reporting

 

There have been no changes in our internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act) during the quarter ended March 31, 2024 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

 

PART II – OTHER INFORMATION

 

ITEM 1. LEGAL PROCEEDINGS

 

A discussion of legal matters is found in Note 7, “Commitments and Contingencies”, in the accompanying notes to the unaudited condensed consolidated financial statements included in Part I - Item 1. Financial Statements of this Quarterly Report.

 

ITEM 1A. RISK FACTORS

 

There have been no material changes or updates to the risk factors previously disclosed in Item 1A. “Risk Factors” of our Annual Report on Form 10-K for the year ended December 31, 2023.

 

ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS

 

None.

 

ITEM 5. OTHER INFORMATION

 

During the quarter ended March 31, 2024, no director or officer of the Company adopted or terminated a “Rule 10b5-1 trading arrangement” or “non-Rule 10b5-1 trading arrangement,” as each term is defined in Item 408(a) of Regulation S-K.

 

ITEM 6. EXHIBITS

 

Exhibit No.

Description

 

3.1	Restated Certificate of Formation, as amended (incorporated by reference to Exhibit 3.1 of the Company’s Quarterly Report on Form 10-Q for quarter ended June 30, 2010).

 

3.2	Statement of Designation of the Series C Convertible Redeemable Preferred Stock of International Isotopes Inc. (incorporated by reference to Exhibit 3.1 of the Company’s Current Report on Form 8-K filed on February 24, 2017).

 

3.3	Certificate of Amendment to Statement of Designation of the Series C Convertible Redeemable Preferred Stock International Isotopes Inc., dated February 16, 2022 (incorporated by reference to Exhibit 3.1 of the Company’s Current Report on Form 8-K filed on February 22, 2022).

 

3.4	Certificate of Amendment to Statement of Designation of the Series C Convertible Redeemable Preferred Stock International Isotopes Inc., dated December 28, 2022 (incorporated by reference to Exhibit 3.1 of the Company’s Current Report on Form 8-K filed December 28, 2022).
3.5	Bylaws (incorporated by reference to Exhibit 3.2 of the Company's Registration Statement on Form SB-2 filed on May 1, 1997 (Registration No. 333-26269)).

 

10.1#†

Asset Purchased Agreement, dated February 8, 2024, among International Isotopes Inc., International Isotopes Fluorine Products, Inc. and American Fuel Resources, LLC (incorporated by reference to Exhibit 10.1 of the Company’s Current Report on Form 8-K filed on February 8, 2024).

 

31.1*

Certification by the Chief Executive Officer under Section 302 of the Sarbanes-Oxley Act of 2002.

 

31.2*

Certification by the Chief Financial Officer under Section 302 of the Sarbanes-Oxley Act of 2002.

 

32.1**

Certification by the Chief Executive Officer furnished pursuant to 18 U.S.C. Section 1350 adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

 

32.2**

Certification by the Chief Financial Officer furnished pursuant to 18 U.S.C. Section 1350 adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

 

101.INS*

Inline XBRL Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document.

 

101.SCH*

Inline XBRL Taxonomy Extension Schema Document

 

101.CAL*

Inline XBRL Taxonomy Extension Calculation Linkbase Document

 

101.DEF*

Inline XBRL Taxonomy Extension Definition Linkbase Document

 

101.LAB*

Inline XBRL Taxonomy Extension Label Linkbase Document

 

101.PRE*

Inline XBRL Taxonomy Extension Presentation Linkbase Document

 

104	Cover Page Interactive Data File (embedded within the Inline XBRL document and contained in Exhibit 101).

 

---

* Filed herewith.

** Furnished herewith.

# Certain portions of the exhibit have been omitted pursuant to Rule 601(b)(10) of Regulation S-K. The omitted information is not material and is the type of information that the registrant treats as private or confidential.

† Certain exhibits and schedules have been omitted pursuant to Item 601(b)(2) of Regulation S-K. The Company agrees to furnish supplementally to the Securities and Exchange Commission a copy of any omitted exhibits or schedules upon request.

 

SIGNATURES

 

 

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

 

Date: May 15, 2024	International Isotopes Inc.
	By:	/s/ Shahe Bagerdjian
		Shahe Bagerdjian
		Chief Executive Officer
	By:	/s/ W. Matthew Cox
		W. Matthew Cox
		Chief Financial Officer

 

---

---

Exhibit 31.1

 

 

CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES OXLEY ACT OF 2002

 

I, Shahe Bagerdjian, certify that:

 

1.     I have reviewed this quarterly report on Form 10-Q of International Isotopes Inc.;

 

2.     Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

 

3.     Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

 

4.     The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15 (e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15 (f) and 15d-15 (f)) for the registrant and have:

 

(a)     Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

 

(b)     Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

 

(c)     Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

 

(d)     Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

 

5.     The registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

 

(a)     All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

 

(b)     Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

 

Date: May 15, 2024

 

/s/ Shahe Bagerdjian

Shahe Bagerdjian, Chief Executive Officer

 

---

---

Exhibit 31.2

 

 

CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES OXLEY ACT OF 2002

 

I, W. Matthew Cox, certify that:

 

1.     I have reviewed this quarterly report on Form 10-Q of International Isotopes Inc.;

 

2.     Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

 

3.     Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

 

4.     The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15 (e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15 (f) and 15d-15(f)) for the registrant and have:

 

(a)     Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

 

(b)     Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

 

(c)     Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

 

(d)     Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

 

5.     The registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

 

(a)     All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

 

(b)     Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

 

Date: May 15, 2024

 

/s/ W. Matthew Cox

W. Matthew Cox, Chief Financial Officer

 

---

---

Exhibit 32.1

 

 

CERTIFICATION PURSUANT TO SECTION 906 OF THE SARBANES OXLEY ACT OF 2002

 

In connection with the Quarterly Report on Form 10-Q of International Isotopes Inc. and subsidiaries (the “Company”) for the period ended March 31, 2024, as filed with the Securities and Exchange Commission (the “Form 10-Q”), I, Shahe Bagerdjian, Chief Executive Officer of the Company, in my capacity as such, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to the best of my knowledge:

 

(1)

The Form 10-Q fully complies with the requirements of Section 13(a) or 15(d), as applicable, of the Securities Exchange Act of 1934, as amended (15 U.S.C. 78m or 78o(d)); and

 

(2)

The information contained in the Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of the Company.

 

 

May 15, 2024	/s/ Shahe Bagerdjian
	Shahe Bagerdjian
	Chief Executive Officer

 

---

---

Exhibit 32.2

 

 

CERTIFICATION PURSUANT TO SECTION 906 OF THE SARBANES OXLEY ACT OF 2002

 

In connection with the Quarterly Report on Form 10-Q of International Isotopes Inc. and subsidiaries (the “Company”) for the period ended March 31, 2024, as filed with the Securities and Exchange Commission (the “Form 10-Q”), I, W. Matthew Cox, Chief Financial Officer of the Company, in my capacity as such, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to the best of my knowledge:

 

(1)

The Form 10-Q fully complies with the requirements of Section 13(a) or 15(d), as applicable, of the Securities Exchange Act of 1934, as amended (15 U.S.C. 78m or 78o(d)); and

 

(2)

The information contained in the Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of the Company.

 

 

May 15, 2024	/s/ W. Matthew Cox
	W. Matthew Cox
	Chief Financial Officer

 

v3.24.1.1.u2

Document And Entity Information - shares	3 Months Ended
	Mar. 31, 2024	May 06, 2024
Document Information [Line Items]
Entity Central Index Key	0001038277
Entity Registrant Name	INTERNATIONAL ISOTOPES INC
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	Q1
Document Fiscal Year Focus	2024
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2024
Document Transition Report	false
Entity File Number	0-22923
Entity Incorporation, State or Country Code	TX
Entity Tax Identification Number	74-2763837
Entity Address, Address Line One	4137 Commerce Circle
Entity Address, City or Town	Idaho Falls
Entity Address, State or Province	ID
Entity Address, Postal Zip Code	83401
City Area Code	208
Local Phone Number	524-5300
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		522,957,618

v3.24.1.1.u2

Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($)	Mar. 31, 2024	Dec. 31, 2023
Current assets
Cash and cash equivalents	$ 2,368,496	$ 2,688,141
Accounts receivable	1,355,362	1,469,298
Inventories	934,186	927,111
Prepaids and other current assets	479,844	672,934
Total current assets	5,137,888	5,757,484
Long-term assets
Restricted cash	1,378,279	880,752
Property, plant and equipment, net	2,589,572	2,465,077
Capitalized lease disposal costs, net	676,168	688,462
Financing lease right-of-use asset	5,108	6,611
Operating lease right-of-use asset	2,150,807	2,183,988
Goodwill	1,384,255	1,384,255
Patents and other intangibles, net	3,497,234	3,538,458
Total long-term assets	11,681,423	11,147,603
Total assets	16,819,311	16,905,087
Current liabilities
Accounts payable	671,388	559,597
Accrued liabilities	1,331,148	1,482,179
Unearned revenue	977,168	932,682
Current portion of operating lease right-of-use liability	143,121	140,733
Current portion of financing lease liability	2,077	2,832
Current portion of mandatorily redeemable preferred stock	4,063,000	0
Total current liabilities	7,332,902	3,273,756
Long-term liabilities
Accrued long-term liabilities	65,625	75,000
Asset retirement obligation	1,491,738	1,474,463
Operating lease right-of-use liability, net of current portion	2,054,823	2,091,511
Mandatorily redeemable convertible preferred stock	0	4,063,000
Total long-term liabilities	5,449,286	9,594,706
Total liabilities	12,782,188	12,868,462
Stockholders' equity
Common stock, $0.01 par value; 750,000,000 shares authorized; 521,889,765 and 519,787,870 shares issued and outstanding respectively	5,218,898	5,197,879
Additional paid in capital	126,302,135	126,168,605
Accumulated deficit	(127,483,910)	(127,329,859)
Total equity	4,037,123	4,036,625
Total liabilities and stockholders' equity	16,819,311	16,905,087
Nonrelated Party [Member]
Current liabilities
Current installments of notes payable	145,000	155,733
Long-term liabilities
Notes payable, net of current portion	217,100	270,732
Related Party [Member]
Long-term liabilities
Notes payable, net of current portion	$ 1,620,000	$ 1,620,000

v3.24.1.1.u2

Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - $ / shares	Mar. 31, 2024	Dec. 31, 2023
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, authorized (in shares)	750,000,000	750,000,000
Common stock, issued (in shares)	521,889,765	519,787,870
Common stock, outstanding (in shares)	521,889,765	519,787,870

v3.24.1.1.u2

Unaudited Condensed Consolidated Statements of Operations - USD ($)	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Sale of product	$ 2,904,458	$ 3,089,535
Cost of product	1,038,347	1,309,499
Gross profit	1,866,111	1,780,036
Operating costs and expenses:
Salaries and contract labor	940,503	975,183
General, administrative and consulting	1,003,557	827,983
Research and development	188,247	124,442
Total operating expenses	2,132,307	1,927,608
Net operating loss	(266,196)	(147,572)
Other income (expense):
Other income	160,720	63,412
Interest income	32,728	19,086
Interest expense	(81,303)	(82,980)
Total other income (expense)	112,145	(482)
Net Loss	$ (154,051)	$ (148,054)
Net loss per common share - basic: (in dollars per share)	$ 0	$ 0
Net loss per common share - diluted: (in dollars per share)	$ 0	$ 0
Weighted average common shares outstanding - basic (in shares)	520,167,183	515,566,825
Weighted average common shares outstanding - diluted (in shares)	520,167,183	515,566,825

v3.24.1.1.u2

Unaudited Condensed Consolidated Statements of Cash Flows - USD ($)	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Cash flows from operating activities
Net loss	$ (154,051)	$ (148,054)
Adjustments to reconcile net (loss) income to net cash provided by (used in) operating activities
Depreciation and amortization	101,447	87,268
Accretion of obligation for lease disposal costs	17,275	13,009
Equity based compensation	62,650	159,878
Right-of-use asset amortization	(1,119)	(1,120)
Changes in operating assets and liabilities:
Accounts receivable	(113,936)	(41,100)
Inventories	7,075	(130,295)
Prepaids and other current assets	(193,090)	(650,711)
Accounts payable and accrued liabilities	41,805	15,932
Unearned revenues	44,486	32,292
Net cash provided by operating activities	412,444	981,311
Cash flows from investing activities:
Purchase of property, plant and equipment	(170,921)	(52,202)
Net cash used in investing activities	(170,921)	(52,202)
Cash flows from financing activities:
Proceeds from sale of stock and exercise of options and warrants	1,479	2,622
Payments on financing lease	(755)	(2,262)
Principal payments on notes payable	(64,365)	(15,723)
Net cash used in financing activities	(63,641)	(15,363)
Net increase in cash, cash equivalents, and restricted cash	177,882	913,746
Cash, cash equivalents, and restricted cash at beginning of period	3,568,893	3,215,866
Cash, cash equivalents, and restricted cash at end of period	3,746,775	4,129,612
Supplemental disclosure of cash flow activities:
Cash paid for interest	155,168	113,855
Supplemental disclosure of noncash financing and investing transactions
Decrease in accrued interest and increase in equity for conversion of dividends to stock	90,420	90,660
Cash and cash equivalents	2,368,496	3,281,161
Restricted cash included in long-term assets	1,378,279	848,451
Total cash, cash equivalents, and restricted cash shown in statement of cash flows	$ 3,746,775	$ 4,129,612

v3.24.1.1.u2

Condensed Consolidated Statement of Stockholders' (Deficit) Equity (Unaudited) - USD ($)	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Parent [Member]	Total
Balance (in shares) at Dec. 31, 2022	514,889,916
Balance at Dec. 31, 2022	$ 5,148,899	$ 125,654,486	$ (126,460,843)	$ 4,342,542
Shares issued under employee stock purchase plan (in shares)	102,855
Shares issued under employee stock purchase plan	$ 1,028	1,594	0	2,622
Stock in lieu of dividends on convertible preferred C (in shares)	2,266,500
Decrease in accrued interest and increase in equity for conversion of dividends to stock	$ 22,665	67,995	0	90,660	$ 90,660
Shares issued for issuance of RSUs (in shares)	250,000
Shares issued for issuance of RSUs	$ 2,500	(2,500)	0	0
Stock based compensation	$ 0	159,878	0	159,878
Net loss			(148,054)	(148,054)	(148,054)
Stock grant (in shares)	343,560
Stock grant	$ 3,436	(3,436)	0	0
Balance (in shares) at Mar. 31, 2023	517,852,831
Balance at Mar. 31, 2023	$ 5,178,528	125,878,017	(126,608,897)	4,447,648
Balance (in shares) at Dec. 31, 2023	519,787,870
Balance at Dec. 31, 2023	$ 5,197,879	126,168,605	(127,329,859)	4,036,625	4,036,625
Shares issued under employee stock purchase plan (in shares)	43,495
Shares issued under employee stock purchase plan	$ 435	1,044	0	1,479
Stock in lieu of dividends on convertible preferred C (in shares)	1,808,400
Decrease in accrued interest and increase in equity for conversion of dividends to stock	$ 18,084	72,336	0	90,420	90,420
Shares issued for issuance of RSUs (in shares)	250,000
Shares issued for issuance of RSUs	$ 2,500	(2,500)	0	0
Stock based compensation	$ 0	62,650	0	62,650
Net loss			(154,051)	(154,051)	(154,051)
Balance (in shares) at Mar. 31, 2024	521,889,765
Balance at Mar. 31, 2024	$ 5,218,898	$ 126,302,135	$ (127,483,910)	$ 4,037,123	$ 4,037,123

v3.24.1.1.u2

Note 1 - The Company and Basis of Presentation	3 Months Ended
	Mar. 31, 2024
Notes to Financial Statements
Business Description and Basis of Presentation [Text Block]	(1)       The Company and Basis of Presentation   International Isotopes Inc. (INIS) was incorporated in Texas in November 1995. The accompanying unaudited condensed consolidated financial statements are presented in conformity with accounting principles generally accepted in the United States of America (GAAP) and include all operations and balances of INIS and its wholly-owned subsidiaries, including RadQual, LLC (RadQual) and TI Services, LLC (TI Services). RadQual is a global supplier of molecular imaging quality control and calibration devices, and is based at INIS headquarters in Idaho Falls, Idaho. TI Services is headquartered in Boardman, Ohio and distributes products for nuclear medicine, nuclear cardiology, and Positron Emission Tomography (PET) imaging. INIS, and its wholly-owned subsidiaries are collectively referred to herein as the “Company,” “we,” “our” or “us.”   Nature of Operations – The Company manufactures a full range of nuclear medicine calibration and reference standards, generic sodium iodide I-131 drug product, cobalt teletherapy sources, and a varied selection of radiochemicals for medical research, and clinical applications. For 2024, the Company’s business consists of five business segments: Theranostics Products, Cobalt Products, Nuclear Medicine Standards, Medical Device Products, and Fluorine Products. The Company’s headquarters and all operations, with the exception of TI Services, are located in Idaho Falls, Idaho.   With the exception of certain unique products, the Company’s normal operating cycle is considered to be one year. Due to the time required to produce some cobalt products, the Company’s operating cycle for those products is considered to be two to three years. Accordingly, preliminary payments received on cobalt contracts, where shipment will not take place for greater than one year, have been recorded as unearned revenue and, depending upon estimated ship dates, classified under either current or long-term liabilities on the Company’s condensed consolidated balance sheets. These unearned revenues are being recognized as revenue in the periods during which the cobalt shipments take place. All assets expected to be realized in cash or sold during the normal operating cycle of business are classified as current assets.   Principles of Consolidation – The accompanying unaudited condensed consolidated financial statements are presented in conformity with GAAP and include all operations and balances of INIS and its wholly-owned subsidiaries including RadQual and TI Services. See Note 4 “Investment and Business Consolidation” for additional information. All significant intercompany accounts and transactions have been eliminated in consolidation.   Interim Financial Information – The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with GAAP for interim financial information and pursuant to the rules and regulations of the U.S. Securities and Exchange Commission (SEC). Accordingly, the accompanying unaudited condensed consolidated financial statements do not include all of the information and notes required by GAAP for complete financial statements. In the opinion of management, all adjustments and reclassifications considered necessary in order to make the financial statements not misleading and for a fair and comparable presentation have been included and are of a normal recurring nature. Operating results for the three months ended March 31, 2024 are not necessarily indicative of the results that may be expected for the year ending December 31, 2024 or any future periods. The accompanying unaudited condensed consolidated financial statements should be read in conjunction with the Company’s Annual Report on Form 10-K for the year ended December 31, 2023 filed with the SEC on March 29, 2024.   Recent Accounting Pronouncements – In August 2020, the Financial Accounting Standards Board issued ASU 2020-06 Debt – Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging – Contracts in Entity’s Own Equity (Subtopic 815-40). The update simplifies accounting related to convertible debt instruments. The standard is effective for fiscal years beginning after December 15, 2023 including interim periods within those fiscal years. The Company is currently evaluating the effect this standard will have on its financial statements.   In November 2023, FASB issued ASU 2023-07, Segment Reporting (Topic 280) - Improvements to Reportable Segment Disclosures, which enhances the disclosures required for operating segments in the Company’s annual and interim consolidated financial statements. ASU 2023-07 is effective for the Company in our annual reporting for fiscal 2024 and for interim period reporting beginning in fiscal 2025 on a retrospective basis, with all required disclosures to be made for all prior periods presented in the consolidated financial statements. Early adoption is permitted. The Company is currently evaluating the impact of ASU 2023-07 on its consolidated financial statements.   In December 2023, FASB issued ASU 2023-09, Income Taxes (Topic 740) - Improvements to Income Tax Disclosures, which enhances the disclosures required for income taxes in the Company’s annual consolidated financial statements. Notably, this ASU requires entities to disclose specific categories in the effective tax rate reconciliation and provide additional information for reconciling items that meet a quantitative threshold. ASU 2023-09 is effective for the Company in its annual reporting for fiscal 2025 on a prospective basis. Early adoption and retrospective reporting are permitted. The Company is currently evaluating the impact of ASU 2023-09 on its consolidated financial statements.

v3.24.1.1.u2

Note 2 - Current Developments and Liquidity	3 Months Ended
	Mar. 31, 2024
Notes to Financial Statements
Substantial Doubt about Going Concern [Text Block]	(2)       Current Developments and Liquidity   Business Condition – Since inception, the Company has incurred substantial losses. During the three months ended March 31, 2024, the Company reported a net loss of $154,051 and net cash provided by operating activities of $412,444. During the three months ended March 31, 2023, the Company reported net loss of $148,054 and net cash provided by operating activities of  $981,311.   During the three months ended March 31, 2024, the Company continued its focus on its strongest long-standing core business segments which consist of its Theranostics Products (previously called Radiochemical Products), Cobalt Products, and Nuclear Medicine Standards, and in particular, the pursuit of new business opportunities within those segments. Additionally, the Company has begun to focus on the start-up of its Medical Device segment which includes assets purchased from AMICI in 2023 and investing into an EasyFill Automated Iodine Capsule System.   The Company holds a Nuclear Regulatory Commission (NRC) construction and operating license for the depleted uranium facility in, as well as the property agreement with, Lea County, New Mexico, where the plant is intended to be constructed. The NRC license for the de-conversion facility is a forty (40) year operating license and is the first commercial license of this type issued in the United States.  There are no other companies with a similar license application under review by the NRC. Therefore, the NRC license represents a significant competitive barrier, and the Company considers it a valuable asset.   The Company expects that cash from operations, equity or debt financing, and its current cash balance will be sufficient to fund operations for the next twelve months. Future liquidity and capital funding requirements will depend on numerous factors, including commercial relationships, technological developments, market factors, available credit, and management of redeemable convertible preferred stock. There is no assurance that additional capital and financing will be available on acceptable terms to the Company or at all.

v3.24.1.1.u2

Note 3 - Net Income (Loss) Per Common Share - Basic and Diluted	3 Months Ended
	Mar. 31, 2024
Notes to Financial Statements
Earnings Per Share [Text Block]	(3)       Net Income (Loss) Per Common Share - Basic and Diluted   For the three months ended March 31, 2024, the Company had 25,812,500 stock options outstanding, 6,750,000 restricted stock units outstanding and 4,063 outstanding shares of Series C redeemable convertible preferred stock (Series C Preferred Stock), each of which were not included in the computation of diluted income (loss) per common share because they would be anti-dilutive.   For the three months ended March 31, 2023, the Company had 26,037,500 stock options outstanding, and 4,063 outstanding shares of Series C Preferred Stock, each of which were not included in the computation of diluted income (loss) per common share because they would be anti-dilutive.   The table below shows the calculation of diluted shares:       3 Months Ended       March 31,     March 31,       2024     2023   Weighted average common shares outstanding - basic     520,167,183       515,566,825                     Effects of dilutive shares                 Stock Options     —       —   Series C Preferred Stock     —       —   Weighted average common shares outstanding - diluted     520,167,183       515,566,825     The table below summarizes common stock equivalents outstanding at March 31, 2024 and 2023:       March 31,       2024     2023   Stock options     25,812,500       26,037,500   Restricted Stock Units     6,750,000       —   Shares of Series C Preferred Stock     40,630,000       40,630,000         73,192,500       66,667,500

v3.24.1.1.u2

Note 4 - Investment and Business Consolidation	3 Months Ended
	Mar. 31, 2024
Notes to Financial Statements
Business Combination Disclosure [Text Block]	(4)       Investment and Business Consolidation   In 2021, the Company acquired all of the remaining membership interests of RadQual, making RadQual a wholly-owned subsidiary of the Company. As TI Services is a 50/50 joint venture between the Company and RadQual, TI Services is also a wholly-owned subsidiary of the Company.   In June 2023, the Company executed an agreement to buy medical devices and related assets and intellectual property rights from AMICI, Inc. The Company has been working on transfers of U.S. Food and Drug Administration (FDA) 510K device registrations and startup of manufacturing. These assets and expenses are included in the Medical Device Segment; launch of these products is expected later in 2024.

v3.24.1.1.u2

Note 5 - Stockholders' Equity, Options, and Warrants	3 Months Ended
	Mar. 31, 2024
Notes to Financial Statements
Equity [Text Block]	(5)       Stockholders’ Equity, Options, and Warrants   Employee Stock Purchase Plan   The Company has an employee stock purchase plan pursuant to which employees of the Company may participate to purchase shares of common stock at a discount. During the three months ended March 31, 2024 and 2023, the Company issued 43,495 and 102,855 shares of common stock, respectively, to employees under the employee stock purchase plan for proceeds of $1,479 and $2,622, respectively. As of  March 31, 2024, 2,181,049 shares of common stock remain available for issuance under the employee stock purchase plan.   Stock-Based Compensation Plans   2015 Incentive Plan - In April 2015, the Company’s Board of Directors approved the International Isotopes Inc. 2015 Incentive Plan (as amended, the 2015 Plan), which was subsequently approved by the Company’s shareholders in July 2015. The 2015 Plan was amended and restated in July 2018 to increase the number of shares authorized for issuance under the 2015 Plan by an additional 20,000,000 shares. The 2015 Plan provides for the grant of incentive and non-qualified stock options, stock appreciation rights, restricted stock, restricted stock units, performance shares and units, and other stock or cash-based awards. At March 31, 2024, there were 19,267,546 shares available for issuance under the 2015 Plan.   Employee/Director Grants - The Company accounts for issuances of stock-based compensation to employees by recognizing, as compensation expense, the cost of employee services received in exchange for equity awards. The compensation expense is based on the grant date fair value of the award. Stock option compensation expense is recognized over the period during which an employee is required to provide service in exchange for the award (the vesting period).   Non-Employee Grants - The Company accounts for its issuances of stock-based compensation to non-employees by recognizing compensation expense based on the grant date fair value of the award. Stock option compensation expense is recognized over the vesting period for the award.   Option awards outstanding as of  March 31, 2024, and changes during the three months ended March 31, 2024, were as follows:                       Weighted                       Weighted     Average                       Average     Remaining     Aggregate   Fixed Options   Shares     Exercise Price     Contractual Life     Intrinsic Value   Outstanding at December 31, 2023     24,787,500     $ 0.05       5.4     $ 17,000   Granted     1,025,000       0.04                   Exercised     —       —                   Expired     —       —                   Forfeited     —       —                   Outstanding at March 31, 2024     25,812,500       0.05       5.4     $ 17,000   Exercisable at March 31, 2024     20,182,500     $ 0.05       4.5     $ 16,000     The intrinsic value of outstanding and exercisable shares is based on the closing price of the Company’s common stock on the OTCQB of $0.04 per share on March 28, 2024, the last trading day of the three months ended  March 31, 2024.   As of  March 31, 2024, there was $85,459 of unrecognized compensation expense related to stock options that will be recognized over a weighted-average period of 1.86 years.   Total stock-based compensation expense for the three months ended March 31, 2024 and 2023 was $62,650 and $159,878, respectively.   During the three months ended March 31, 2024, the Company granted an aggregate of 1,025,000 qualified stock options to 2 of its employees. These options vest over a five-year period with the first vesting on the first anniversary of the date of grant and expiration at ten-year anniversary for all grants. The exercise price for these granted options was $0.04 and $0.05 per share. The options issued during the three months ended March 31, 2024 have a fair value of $29,240, as estimated on the date of issue using the Black-Scholes options pricing model with the following weighted-average assumptions: risk free interest rate of 4.06% to 4.23%, expected dividend yield rate of 0%, expected volatility of 73.41% to 79.21% and an expected life between 5 and 7 years.     Restricted Stock Units outstanding as of  March 31, 2024, and changes during the three months ended March 31, 2024, were as follows:   Non-Vested Restricted Stock Units   Number of restricted stock units   Weighted average grant-date fair value Outstanding at December 31, 2023   7,000,000   $ 0.04 Granted   —     Vested   (250,000)   0.04 Forfeited / Cancelled   —     Outstanding at March 31, 2024   6,750,000   $ 0.04       Preferred Stock   At March 31, 2024, there were 4,063 shares of the Series C Preferred Stock outstanding with a mandatory redemption date of February 2025 at $1,000 per share in either cash or shares of common stock, at the option of the holder. Holders of the Series C Preferred Stock do not have any voting rights except as required by law and in connection with certain events as set forth in the Statement of Designation of the Series C Preferred Stock. The Series C Preferred Stock accrues dividends at a rate of 6% per annum, payable annually on February 17th of each year. The Series C Preferred Stock are convertible at the option of the holders at any time into shares of the Company common stock at an initial conversion price equal to $0.10 per share, subject to adjustment. If the volume-weighted average closing price of the Company’s common stock over a period of 90 consecutive trading days is greater than $0.25 per share, the Company may redeem all or any portion of the outstanding Series C Preferred Stock at the original purchase price per share plus any accrued and unpaid dividends, payable in shares of common stock.   During the three months ended March 31, 2024 and 2023, dividends paid to holders of the Series C Preferred Stock totaled $243,030 and $243,780 respectively. Some holders of the Series C Preferred Stock elected to settle their dividend payments with shares of the Company’s common stock in lieu of cash. For the three months ended March 31, 2024 and 2023, the Company issued an aggregate of 1,808,400 and 2,266,500 shares of common stock, respectively, in lieu of dividend payments in the aggregate of $90,420 and $90,660, respectively, with the remaining dividend payable settled in cash of $152,610 and $153,120, respectively.

v3.24.1.1.u2

Note 6 - Debt	3 Months Ended
	Mar. 31, 2024
Notes to Financial Statements
Debt Disclosure [Text Block]	(6)        Debt   In December 2013, the Company entered into a promissory note agreement with its then Chairman of the Board and one of our major shareholders, pursuant to which we borrowed $500,000 (the 2013 Promissory Note). The 2013 Promissory Note is secured and bears interest at 6% per annum and was originally due June 30, 2014. According to the terms of the 2013 Promissory Note, at any time, the lenders may settle any or all of the principal and accrued interest with shares of our common stock. In December 2019, the 2013 Promissory Note was modified to extend the maturity date to December 31, 2021, with all remaining terms unchanged. In January 2022, the 2013 Promissory Note was modified to extend the maturity date to December 31, 2023, with all remaining terms unchanged. In February 2024, the 2013 Promissory Note was modified to extend the maturity date to March 31, 2026, with all remaining terms unchanged. At March 31, 2024, accrued interest payable on the 2013 Promissory Note was $309,234.    In April 2018, the Company borrowed $120,000 from its then Chief Executive Officer and Chairman of the Board pursuant to a promissory note (the 2018 Promissory Note). The 2018 Promissory Note accrues interest at 6% per annum, which is payable upon maturity of the 2018 Promissory Note. The 2018 Promissory Note was originally unsecured and originally matured on August 1, 2018. At any time, the holder of the 2018 Promissory Note may elect to have any or all of the principal and accrued interest settled with shares of our common stock based on the average price of the shares over the previous 20 trading days. In June 2018, the 2018 Promissory Note was modified to extend the maturity date to March 31, 2019 with all other provisions remaining unchanged. In February 2019, the 2018 Promissory Note was modified to extend the maturity date to July 31, 2019 with all other provisions remaining unchanged. In July 2019, the 2018 Promissory Note was modified to extend the maturity date to January 31, 2020 with all other provisions remaining unchanged. In December 2019, the 2018 Promissory Note was modified to extend the maturity date to December 31, 2021, the note was also modified to become secured by company assets, with all other provisions remaining unchanged. In December 2021, the 2018 Promissory Note was modified to extend the maturity date to December 31, 2023, with all remaining terms unchanged. In December 2023, the 2018 Promissory Note was modified to extend the maturity date to January 31, 2025, with all remaining terms unchanged. In February 2024, the 2018 Promissory Note was modified to extend the maturity date to March 31, 2026, with all remaining terms unchanged. At March 31, 2024, accrued interest on the 2018 Promissory Note totaled $42,770.   In December 2019 and February 2020, the Company borrowed an aggregate of $1,000,000 from four of the Company’s major shareholders pursuant to a promissory note (the 2019 Promissory Note). The 2019 Promissory Note bears an interest rate of 4% annually and was originally due December 31, 2022. According to the terms of the 2019 Promissory Note, at any time, the lenders may settle any or all of the principal and accrued interest with shares of the Company’s common stock based on the average closing price of the Company’s common stock for the 20 days preceding the payment. In connection with the 2019 Promissory Note, the lenders were issued warrants totaling 30,000,000 warrants to purchase shares of the Company’s common stock at $0.045 per share (the Class O Warrants). The fair value of these Class O Warrants issued totaled $446,079 and was recorded as a debt discount and was amortized over the life of the 2019 Promissory Note. The Company calculated a beneficial conversion feature of $315,643 which was accreted to interest expense over the life of the 2019 Promissory Note. In December 2022, the 2019 Promissory Note was modified to extend the maturity date to December 31, 2024, with all remaining terms unchanged. In February 2024, the 2019 Promissory Note was modified to extend the maturity date to March 31, 2026, with all remaining terms unchanged. At March 31, 2024, the accrued interest on the 2019 Promissory Note totaled $169,131.   In June 2023, the Company executed an asset purchase agreement with AMICI, Inc. for purchase of medical devices and related assets and intellectual property rights. As part of the asset purchase agreement, the Company entered a promissory agreement for $427,100. According to the terms of the agreement, the Company is to pay the seller a minimum of $10,000 per month for a period of 45 months. The amount due is not subject to interest until the 25th month after the anniversary of the closing of the agreement. At March 31, 2024, the balance of this agreement was $362,100.

v3.24.1.1.u2

Note 7 - Commitments and Contingencies	3 Months Ended
	Mar. 31, 2024
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	(7)       Commitments and Contingencies   Dependence on Third Parties   The production of High Specific Activity Cobalt is dependent upon the U.S. Department of Energy (DOE), and its prime operating contractor, which controls the Advanced Test Reactor (ATR) and laboratory operations at the ATR located outside of Idaho Falls, Idaho. In October 2014, the Company signed a ten-year contract with the DOE for the irradiation of cobalt targets for the production of cobalt-60. The Company will be able to purchase cobalt targets for a fixed price per target with an annual 5% escalation in price. The contract term is October 1, 2014 through September 30, 2024. The Company is currently working on an extension to this contract. Also, the DOE may end the contract if it determines termination is necessary for the national defense, security or environmental safety of the United States.   Sales of our most predominant Theranostics products are dependent upon a few key suppliers. An interruption in production by any of these individual suppliers could have an immediate negative impact upon radiochemical sales until material could be purchased from alternate suppliers including obtaining regulatory approval to use material from alternative suppliers if necessary.   The Nuclear Medicine Reference and Calibration Standard products sold by the Company are dependent upon certain radioisotopes that are supplied to the Company through agreements with several suppliers. A loss of any of these suppliers could adversely affect operating results by causing a delay in production or a possible loss of sales. In three months ended March 31, 2024, there was a global shortage of Cobalt-57 isotopes, a key isotope for this business segment that resulted in lost sales. We have added a supplier in 2024 and continue to search for additional means to produce and procure certain critical isotopes. However, we anticipate periodic shortages to continue for the remainder of 2024.     Contingencies   Because all the Company’s business segments involve the handling or use of radioactive material, the Company is required to have an operating license from the NRC and specially trained staff to handle these materials. The Company has amended this operating license numerous times to increase the amount of material permitted within the Company’s facility. Although this license does not currently restrict the volume of business operations performed or projected to be performed in the upcoming year, additional processing capabilities and license amendments could be implemented that would permit processing of other reactor-produced radioisotopes by the Company. The financial assurance required by the NRC to support this license has been provided for with a surety bond held with North American Specialty Insurance Company which is supported by a restricted money market account held with Merrill Lynch. In the three months ended March 31, 2024 the Company funded an additional $484,000 to this restricted money market account. At  March 31, 2024, the balance of this account was $1,378,279.   In August 2011, the Company received land from Lea County, New Mexico, pursuant to a Project Participation Agreement (PPA), whereby the land was deeded to the Company for no monetary consideration. In return, the Company committed to construct a uranium de-conversion and Fluorine Extraction Process facility on the land.  In order to retain title to the property, the Company was to begin construction of the de-conversion facility no later than December 31, 2014, and complete Phase I of the project and have hired at least 75 persons to operate the facility no later than December 31, 2015, although commercial operations need not have begun by that date. In 2015, the Company negotiated a modification to the PPA that extended the start of construction date to December 31, 2015, and the hiring milestone to December 31, 2016. Those dates were also not met. The Company has been in discussions with commercial companies possibly interested in purchasing rights to this project. Should those discussions come to fruition the Company plans to negotiate a second modification to the PPA agreement to further extend the commitment dates. If the Company is not successful in reaching an amendment to extend the performance dates in the PPA., then it may, at its sole option, either purchase or re-convey the property to Lea County, New Mexico.  The purchase price of the property would be $776,078, plus interest at the annual rate of 5.25% from the date of the closing to the date of payment.  The Company has not recorded the value of this property as an asset and will not do so until such time that sufficient progress on the project has been made to meet the Company’s obligations under the agreements for permanent transfer of the title. On February 8, 2024, the Company entered into a definitive agreement to sell all of our assets related to the Fluorine Products segment and the Planned Uranium De-Conversion Facility, including the Lea County land, ("DUF6 Asset Sale"). The Company expects to close the agreement within 12 to 24 months of signing. Closing is contingent on various conditions being met, including approvals and agreements by the NRC and other third parties.

v3.24.1.1.u2

Note 8 - Revenue Recognition	3 Months Ended
	Mar. 31, 2024
Notes to Financial Statements
Revenue from Contract with Customer [Text Block]	(8)      Revenue Recognition   Revenue from Product Sales   The following tables present the Company’s revenue disaggregated by business segment and geography, based on management’s assessment of available data:       Three Months Ended March 31, 2024     Three Months Ended March 31, 2023               Outside     Total     % of Total             Outside     Total     % of Total       U.S.     U.S.     Revenues     Revenues     U.S.     U.S.     Revenues     Revenues   Theranostics Products   $ 1,747,321     $ 157,761     $ 1,905,082       66 %   $ 1,625,116     $ 137,280     $ 1,762,396       57 % Cobalt Products     215,368       18,600       233,968       8 %     142,158       16,150       158,308       5 % Nuclear Medicine Products     535,429       229,979       765,408       26 %     871,588       297,243       1,168,831       38 % Medical Devices Products     —       —       —       0 %     —       —       —       0 % Fluorine Products     —       —       —       0 %     —       —       —       0 %     $ 2,498,118     $ 406,340     $ 2,904,458       100 %   $ 2,638,862     $ 450,673     $ 3,089,535       100 %   The Company’s revenue consists primarily of distribution of theranostics including sodium iodide I-131 drug product, calibration and reference standards manufactured for use in the nuclear medicine industry, and cobalt source manufacturing. With the exception of certain unique products, the Company’s normal operating cycle is considered to be one year. Due to the time required to produce some cobalt products, the Company’s operating cycle for those products is considered to be two to three years. Accordingly, preliminary payments received on cobalt contracts where shipment has not taken place have been recorded as unearned revenue on the Company’s condensed consolidated balance sheets and classified under current or long-term liabilities, depending upon estimated ship dates. For the three months ended March 31, 2024, the Company reported current unearned revenue of $977,168. For the period ended December 31, 2023, the Company reported current unearned revenue of $932,682. These unearned revenues will be recognized as revenue in the periods during which the cobalt shipments take place.   Contract Balances   The Company records a receivable when it has an unconditional right to receive consideration after the performance obligations are satisfied.  As of  March 31, 2024, and December 31, 2023, accounts receivable totaled $1,355,362 and $1,469,298, respectively.  For the three months ended March 31, 2024, the Company did not incur material impairment losses with respect to its receivables.

v3.24.1.1.u2

Note 9 - Leases	3 Months Ended
	Mar. 31, 2024
Notes to Financial Statements
Lessee, Operating Leases and Finance Leases [Text Block]	(9)      Leases   The Company leases office and warehouse space under operating leases. Right-of-use assets represent the Company’s right to use an underlying asset for the lease term and lease liabilities represent its obligation to make lease payments under the lease. Operating lease, right-of-use assets, and liabilities are recognized at the lease commencement date based on the present value of lease payments over the reasonably certain lease term. The implicit rates with the Company’s operating leases are generally not determinable and the Company uses its incremental borrowing rate at the lease commencement date to determine the present value of its lease payments. The determination of the Company’s incremental borrowing rate requires judgement. The company determines its incremental borrowing rate for each lease using its then-current borrowing rate. Certain of the Company’s leases include options to extend or terminate the lease. The Company establishes the number of renewal options periods used in determining the operating lease term based upon its assessment at the inception of the operating lease. The option to renew the lease may be automatic, at the option of the Company, or mutually agreed to between the landlord and the Company. Once the facility lease term has begun, the present value of the aggregate future minimum lease payments is recorded as a right-of-use asset. Lease expense is recognized on a straight-line basis over the term of the lease.       Three Months Ended March 31,       2024     2023   Operating lease costs   $ 71,777     $ 75,366   Short-term operating lease costs     1,800       2,040   Financing lease expense:                 Amortization of right-of-use assets     755       2,249   Interest on lease liabilities     44       161   Total financing lease expense     799       2,410   Total lease expense   $ 74,376     $ 79,816                     Right-of-use assets obtained in exchange for new operating lease liabilities   $ —     $ —   Right-of-use assets obtained in exchange for new financing lease liabilities   $ —     $ —                     Weighted-average remaining lease term (years) - operating leases     10.8       11.8   Weighted-average remaining lease term (years) - financing leases     0.7       1.0   Weighted-average discount rate - operating leases     6.75 %     6.75 % Weighted-average discount rate - financing leases     6.75 %     7.68 %   The future minimum payments under these operating lease agreements are as follows:       Operating Leases     Financing Leases   2024 (excluding the three-months ended March 31, 2024)   $ 215,331     $ —   2025     287,108       2,130   2026     287,108       —   2027     287,108       —   2028     287,108       —   Thereafter     1,738,084       —   Total minimum lease obligations     3,101,847       2,130   Less-amounts representing interest     (903,903 )     (53 ) Present value of minimum lease obligations     2,197,944       2,077   Current maturities     (143,121 )     (2,077 ) Lease obligations, net of current maturities   $ 2,054,823     $ —

v3.24.1.1.u2

Note 10 - Segment Information	3 Months Ended
	Mar. 31, 2024
Notes to Financial Statements
Segment Reporting Disclosure [Text Block]	(10)        Segment Information   In 2024, the Company has five reportable segments which include: Theranostics Products, Cobalt Products, Nuclear Medicine Standards, Medical Device Products, and Fluorine Products.   Information regarding the operations and assets of these reportable business segments is contained in the following table:       Three months ended March 31,   Sale of Product   2024     2023   Theranostics Products   $ 1,905,082     $ 1,762,396   Cobalt Products     233,968       158,308   Nuclear Medicine Standards     765,408       1,168,831   Medical Device Products     —       —   Fluorine Products     —       —   Total Segments     2,904,458       3,089,535   Corporate revenue     —       —   Total Consolidated   $ 2,904,458     $ 3,089,535         Three months ended March 31,   Depreciation and Amortization   2024     2023   Theranostics Products   $ 9,046     $ 7,159   Cobalt Products     23,311       12,834   Nuclear Medicine Standards     32,978       29,209   Medical Device Products     —       —   Fluorine Products     26,095       28,970   Total Segments     91,430       78,172   Corporate depreciation and amortization     10,017       9,096   Total Consolidated   $ 101,447     $ 87,268         Three months ended March 31,   Segment Income (Loss)   2024     2023   Theranostics Products     $ 1,013,464       $ 767,112   Cobalt Products     (66,325)       (26,245)   Nuclear Medicine Standards     9,497       128,785   Medical Device Products     (28,511)       —   Fluorine Products     21,249       (29,239)   Total Segments     949,374       840,413   Corporate loss     (1,103,425)       (988,467)   Net Income     $ (154,051)       $ (148,054)         Three months ended March 31,   Expenditures for Segment Assets   2024     2023   Theranostics Products   $ 93,924     $ —   Cobalt Products     —       —   Nuclear Medicine Standards     49,038       3,130   Medical Device Products           —   Fluorine Products     —       —   Total Segments     142,962       3,130   Corporate purchases     27,959       49,072   Total Consolidated   $ 170,921     $ 52,202         March 31,     December 31,   Segment Assets   2024     2023   Theranostics Products   $ 1,116,697     $ 849,351   Cobalt Products     468,901       274,513   Nuclear Medicine Standards     2,514,148       2,986,458   Medical Device Products     552,100       552,100   Fluorine Products     4,954,023       4,980,118   Total Segments     9,605,869       9,642,540   Corporate assets     7,213,442       7,262,547   Total Consolidated   $ 16,819,311     $ 16,905,087

v3.24.1.1.u2

Note 3 - Net Income (Loss) Per Common Share - Basic and Diluted (Tables)	3 Months Ended
	Mar. 31, 2024
Notes Tables
Schedule of Weighted Average Number of Shares [Table Text Block]	3 Months Ended       March 31,     March 31,       2024     2023   Weighted average common shares outstanding - basic     520,167,183       515,566,825                     Effects of dilutive shares                 Stock Options     —       —   Series C Preferred Stock     —       —   Weighted average common shares outstanding - diluted     520,167,183       515,566,825
Schedule of Stock by Class [Table Text Block]	March 31,       2024     2023   Stock options     25,812,500       26,037,500   Restricted Stock Units     6,750,000       —   Shares of Series C Preferred Stock     40,630,000       40,630,000         73,192,500       66,667,500

v3.24.1.1.u2

Note 5 - Stockholders' Equity, Options, and Warrants (Tables)	3 Months Ended
	Mar. 31, 2024
Notes Tables
Share-Based Payment Arrangement, Option, Activity [Table Text Block]	Weighted                       Weighted     Average                       Average     Remaining     Aggregate   Fixed Options   Shares     Exercise Price     Contractual Life     Intrinsic Value   Outstanding at December 31, 2023     24,787,500     $ 0.05       5.4     $ 17,000   Granted     1,025,000       0.04                   Exercised     —       —                   Expired     —       —                   Forfeited     —       —                   Outstanding at March 31, 2024     25,812,500       0.05       5.4     $ 17,000   Exercisable at March 31, 2024     20,182,500     $ 0.05       4.5     $ 16,000
Share-Based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block]	Non-Vested Restricted Stock Units   Number of restricted stock units   Weighted average grant-date fair value Outstanding at December 31, 2023   7,000,000   $ 0.04 Granted   —     Vested   (250,000)   0.04 Forfeited / Cancelled   —     Outstanding at March 31, 2024   6,750,000   $ 0.04

v3.24.1.1.u2

Note 8 - Revenue Recognition (Tables)	3 Months Ended
	Mar. 31, 2024
Notes Tables
Disaggregation of Revenue [Table Text Block]	Three Months Ended March 31, 2024     Three Months Ended March 31, 2023               Outside     Total     % of Total             Outside     Total     % of Total       U.S.     U.S.     Revenues     Revenues     U.S.     U.S.     Revenues     Revenues   Theranostics Products   $ 1,747,321     $ 157,761     $ 1,905,082       66 %   $ 1,625,116     $ 137,280     $ 1,762,396       57 % Cobalt Products     215,368       18,600       233,968       8 %     142,158       16,150       158,308       5 % Nuclear Medicine Products     535,429       229,979       765,408       26 %     871,588       297,243       1,168,831       38 % Medical Devices Products     —       —       —       0 %     —       —       —       0 % Fluorine Products     —       —       —       0 %     —       —       —       0 %     $ 2,498,118     $ 406,340     $ 2,904,458       100 %   $ 2,638,862     $ 450,673     $ 3,089,535       100 %

v3.24.1.1.u2

Note 9 - Leases (Tables)	3 Months Ended
	Mar. 31, 2024
Notes Tables
Lease, Cost [Table Text Block]	Three Months Ended March 31,       2024     2023   Operating lease costs   $ 71,777     $ 75,366   Short-term operating lease costs     1,800       2,040   Financing lease expense:                 Amortization of right-of-use assets     755       2,249   Interest on lease liabilities     44       161   Total financing lease expense     799       2,410   Total lease expense   $ 74,376     $ 79,816                     Right-of-use assets obtained in exchange for new operating lease liabilities   $ —     $ —   Right-of-use assets obtained in exchange for new financing lease liabilities   $ —     $ —                     Weighted-average remaining lease term (years) - operating leases     10.8       11.8   Weighted-average remaining lease term (years) - financing leases     0.7       1.0   Weighted-average discount rate - operating leases     6.75 %     6.75 % Weighted-average discount rate - financing leases     6.75 %     7.68 %
Lessee, Liability, to be Paid, Maturity [ Table Text Block]	Operating Leases     Financing Leases   2024 (excluding the three-months ended March 31, 2024)   $ 215,331     $ —   2025     287,108       2,130   2026     287,108       —   2027     287,108       —   2028     287,108       —   Thereafter     1,738,084       —   Total minimum lease obligations     3,101,847       2,130   Less-amounts representing interest     (903,903 )     (53 ) Present value of minimum lease obligations     2,197,944       2,077   Current maturities     (143,121 )     (2,077 ) Lease obligations, net of current maturities   $ 2,054,823     $ —

v3.24.1.1.u2

Note 10 - Segment Information (Tables)	3 Months Ended
	Mar. 31, 2024
Notes Tables
Schedule of Segment Reporting Information, by Segment [Table Text Block]	Three months ended March 31,   Sale of Product   2024     2023   Theranostics Products   $ 1,905,082     $ 1,762,396   Cobalt Products     233,968       158,308   Nuclear Medicine Standards     765,408       1,168,831   Medical Device Products     —       —   Fluorine Products     —       —   Total Segments     2,904,458       3,089,535   Corporate revenue     —       —   Total Consolidated   $ 2,904,458     $ 3,089,535       Three months ended March 31,   Depreciation and Amortization   2024     2023   Theranostics Products   $ 9,046     $ 7,159   Cobalt Products     23,311       12,834   Nuclear Medicine Standards     32,978       29,209   Medical Device Products     —       —   Fluorine Products     26,095       28,970   Total Segments     91,430       78,172   Corporate depreciation and amortization     10,017       9,096   Total Consolidated   $ 101,447     $ 87,268       Three months ended March 31,   Segment Income (Loss)   2024     2023   Theranostics Products     $ 1,013,464       $ 767,112   Cobalt Products     (66,325)       (26,245)   Nuclear Medicine Standards     9,497       128,785   Medical Device Products     (28,511)       —   Fluorine Products     21,249       (29,239)   Total Segments     949,374       840,413   Corporate loss     (1,103,425)       (988,467)   Net Income     $ (154,051)       $ (148,054)       Three months ended March 31,   Expenditures for Segment Assets   2024     2023   Theranostics Products   $ 93,924     $ —   Cobalt Products     —       —   Nuclear Medicine Standards     49,038       3,130   Medical Device Products           —   Fluorine Products     —       —   Total Segments     142,962       3,130   Corporate purchases     27,959       49,072   Total Consolidated   $ 170,921     $ 52,202       March 31,     December 31,   Segment Assets   2024     2023   Theranostics Products   $ 1,116,697     $ 849,351   Cobalt Products     468,901       274,513   Nuclear Medicine Standards     2,514,148       2,986,458   Medical Device Products     552,100       552,100   Fluorine Products     4,954,023       4,980,118   Total Segments     9,605,869       9,642,540   Corporate assets     7,213,442       7,262,547   Total Consolidated   $ 16,819,311     $ 16,905,087

v3.24.1.1.u2

Note 1 - The Company and Basis of Presentation (Details Textual)	3 Months Ended
	Mar. 31, 2024
Number of Operating Segments	5

v3.24.1.1.u2

Note 2 - Current Developments and Liquidity (Details Textual) - USD ($)	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Net Income (Loss) Attributable to Parent	$ (154,051)	$ (148,054)
Net Cash Provided by (Used in) Operating Activities	$ 412,444	$ 981,311

v3.24.1.1.u2

Note 3 - Net Income (Loss) Per Common Share - Basic and Diluted (Details Textual) - shares	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Series C Preferred Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)	4,063	4,063
Share-Based Payment Arrangement, Option [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)	25,812,500	26,037,500
Restricted Stock Units (RSUs) [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)	6,750,000

v3.24.1.1.u2

Note 3 - Net Income (Loss) Per Common Share - Basic and Diluted - Calculation of Diluted Shares (Details) - shares	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Weighted average common shares outstanding - basic (in shares)	520,167,183	515,566,825
Weighted average common shares outstanding - diluted (in shares)	520,167,183	515,566,825
Series C Preferred Stock [Member]
Effects if dilutive shares (in shares)	0	0
Share-Based Payment Arrangement, Option [Member]
Effects if dilutive shares (in shares)	0	0

v3.24.1.1.u2

Note 3 - Net Income (Loss) Per Common Share - Basic and Diluted - Schedule of Common Stock Equivalents Outstanding (Details) - shares	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023
Stock options (in shares)	25,812,500	24,787,500	26,037,500
Common Stock, Other Shares, Outstanding	73,192,500		66,667,500
Series C Preferred Stock [Member]
Shares of Series C Preferred Stock (in shares)	40,630,000		40,630,000
Restricted Stock Units (RSUs) [Member]
Restricted Stock Units (in shares)	6,750,000	7,000,000	0

v3.24.1.1.u2

Note 5 - Stockholders' Equity, Options, and Warrants (Details Textual) - USD ($)	1 Months Ended	3 Months Ended
	Jul. 31, 2018	Mar. 31, 2024	Mar. 31, 2023	Mar. 28, 2024
Share Price (in dollars per share)				$ 0.04
Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount		$ 85,459
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)		1,025,000
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share)		$ 0.04
Series C Preferred Stock [Member]
Preferred Stock, Shares Outstanding (in shares)		4,063
Preferred Stock, Redemption Price Per Share (in dollars per share)		$ 1,000
Preferred Stock, Dividend Rate, Percentage		6.00%
Preferred Stock, Convertible, Conversion Price (in dollars per share)		$ 0.1
Dividends		$ 243,030	$ 243,780
Common Stock Dividends, Shares (in shares)		1,808,400	2,266,500
Dividends, Preferred Stock		$ 90,420	$ 90,660
Dividends, Preferred Stock, Cash		$ 152,610	153,120
Share-Based Payment Arrangement, Option [Member]
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)		1 year 10 months 9 days
Share-Based Payment Arrangement, Expense		$ 62,650	$ 159,878
Qualified Options [Member] | Share-Based Payment Arrangement, Employee [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)		1,025,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)		5 years
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year)		10 years
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share)		$ 0.04	$ 0.05
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested in Period, Fair Value		$ 29,240
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Minimum		4.06%
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Maximum		4.23%
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate		0.00%
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Minimum		73.41%
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Maximum		79.21%
Qualified Options [Member] | Share-Based Payment Arrangement, Employee [Member] | Minimum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term (Year)		5 years
Qualified Options [Member] | Share-Based Payment Arrangement, Employee [Member] | Maximum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term (Year)		7 years
The 2015 Incentive Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)		19,267,546
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized (in shares)	20,000,000
Employee Stock Purchase Plan [Member]
Stock Issued During Period, Shares, Employee Stock Purchase Plans (in shares)		43,495	102,855
Proceeds from Stock Plans		$ 1,479	$ 2,622
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)		2,181,049

v3.24.1.1.u2

Note 5 - Stockholders' Equity, Options, and Warrants - Option Activity (Details) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Outstanding (in shares)	24,787,500
Outstanding, weighted average exercise price (in dollars per share)	$ 0.05
Outstanding, weighted average remaining contractual life (Year)	5 years 4 months 24 days		5 years 4 months 24 days
Outstanding, aggregate intrinsic value	$ 17,000		$ 17,000
Granted (in shares)	1,025,000
Granted, weighted average exercise price (in dollars per share)	$ 0.04
Exercised (in shares)	0
Exercised, weighted average exercise price (in dollars per share)	$ 0
Expired (in shares)	0
Expired, weighted average exercise price (in dollars per share)	$ 0
Forfeited (in shares)	0
Forfeited, weighted average exercise price (in dollars per share)	$ 0
Outstanding (in shares)	25,812,500	26,037,500	24,787,500
Outstanding, weighted average exercise price (in dollars per share)	$ 0.05		$ 0.05
Exercisable (in shares)	20,182,500
Exercisable, weighted average exercise price (in dollars per share)	$ 0.05
Exercisable, weighted average remaining contractual life (Year)	4 years 6 months
Exercisable, aggregate intrinsic value	$ 16,000

v3.24.1.1.u2

Note 5 - Stockholders' Equity, Options, and Warrants - Restricted Stock Units Activity (Details) - Restricted Stock Units (RSUs) [Member]	3 Months Ended
	Mar. 31, 2024 $ / shares shares
Outstanding, number (in shares) | shares	7,000,000
Outstanding, weighted average grant date fair value (in dollars per share) | $ / shares	$ 0.04
Granted, number (in shares) | shares
Granted, weighted average grant date fair value (in dollars per share) | $ / shares
Vested, number (in shares) | shares	(250,000)
Vested, weighted average grant date fair value (in dollars per share) | $ / shares	$ 0.04
Forfeited / Cancelled, number (in shares) | shares
Forfeited / Cancelled, weighted average grant date fair value (in dollars per share) | $ / shares
Outstanding, number (in shares) | shares	6,750,000
Outstanding, weighted average grant date fair value (in dollars per share) | $ / shares	$ 0.04

v3.24.1.1.u2

Note 6 - Debt (Details Textual) - USD ($)		1 Months Ended
	Feb. 28, 2020	Jun. 30, 2023	Mar. 31, 2024	Apr. 30, 2018	Dec. 31, 2013
The 2013 Promissory Note [Member] | Former Chairman of the Board [Member]
Notes Payable					$ 500,000
Debt Instrument, Interest Rate, Stated Percentage					6.00%
Interest Payable			$ 309,234
The 2018 Promissory Note [Member] | Chief Executive Officer and Chairman of the Board [Member]
Notes Payable				$ 120,000
Debt Instrument, Interest Rate, Stated Percentage				6.00%
Interest Payable			42,770
The 2019 Promissory Note [Member] | Four Major Shareholders [Member]
Notes Payable	$ 1,000,000
Debt Instrument, Interest Rate, Stated Percentage	4.00%
Interest Payable			169,131
Debt Instrument, Convertible, Beneficial Conversion Feature	$ 315,643
The 2019 Promissory Note [Member] | Four Major Shareholders [Member] | Class O Warrants [Member]
Class of Warrant or Right, Outstanding (in shares)	30,000,000
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	$ 0.045
Warrants and Rights Outstanding	$ 446,079
Promissory Agreement With AMICI [Member]
Debt Instrument, Face Amount		$ 427,100
Debt Instrument, Periodic Payment		$ 10,000
Debt Instrument, Term (Month)		45 months
Long-Term Debt, Gross			$ 362,100

v3.24.1.1.u2

Note 7 - Commitments and Contingencies (Details Textual)			3 Months Ended
	Oct. 02, 2014	Aug. 31, 2011 USD ($)	Mar. 31, 2024 USD ($)
Increase (Decrease) of Restricted Cash and Investments			$ 484,000
Restricted Cash and Investments			$ 1,378,279
Land in Lea County, New Mexico [Member]
Number of Employees Hired		75
Property, Plant, and Equipment, Fair Value Disclosure		$ 776,078
Asset Purchase, Interest		5.25%
Contract With the DOE for the Irradiation of Cobalt Targets [Member]
Contract Term (Year)	10 years
Other Commitments, Annual Fixed Price, Escalation Percent	5.00%

v3.24.1.1.u2

Note 8 - Revenue Recognition (Details Textual) - USD ($)	Mar. 31, 2024	Dec. 31, 2023
Deferred Revenue, Current	$ 977,168	$ 932,682
Accounts Receivable, after Allowance for Credit Loss, Current	$ 1,355,362	$ 1,469,298

v3.24.1.1.u2

Note 8 - Revenue Recognition - Disaggregation of Revenue (Details) - USD ($)	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Sale of product	$ 2,904,458	$ 3,089,535
Percent of total revenues	100.00%	100.00%
Theranostics Products [Member]
Sale of product	$ 1,905,082	$ 1,762,396
Percent of total revenues	66.00%	57.00%
Cobalt Products [Member]
Sale of product	$ 233,968	$ 158,308
Percent of total revenues	8.00%	5.00%
Nuclear Medicine Products [Member]
Sale of product	$ 765,408	$ 1,168,831
Percent of total revenues	26.00%	38.00%
Medical Device Products [Member]
Sale of product	$ 0	$ 0
Percent of total revenues	0.00%	0.00%
Fluorine Products [Member]
Sale of product	$ 0	$ 0
Percent of total revenues	0.00%	0.00%
UNITED STATES
Sale of product	$ 2,498,118	$ 2,638,862
UNITED STATES | Theranostics Products [Member]
Sale of product	1,747,321	1,625,116
UNITED STATES | Cobalt Products [Member]
Sale of product	215,368	142,158
UNITED STATES | Nuclear Medicine Products [Member]
Sale of product	535,429	871,588
UNITED STATES | Medical Device Products [Member]
Sale of product	0	0
UNITED STATES | Fluorine Products [Member]
Sale of product	0	0
Non-US [Member]
Sale of product	406,340	450,673
Non-US [Member] | Theranostics Products [Member]
Sale of product	157,761	137,280
Non-US [Member] | Cobalt Products [Member]
Sale of product	18,600	16,150
Non-US [Member] | Nuclear Medicine Products [Member]
Sale of product	229,979	297,243
Non-US [Member] | Medical Device Products [Member]
Sale of product	0	0
Non-US [Member] | Fluorine Products [Member]
Sale of product	$ 0	$ 0

v3.24.1.1.u2

Note 9 - Leases - Lease Cost (Details) - USD ($)	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Operating lease costs	$ 71,777	$ 75,366
Short-term operating lease costs	1,800	2,040
Amortization of right-of-use assets	755	2,249
Interest on lease liabilities	44	161
Total financing lease expense	799	2,410
Total lease expense	74,376	79,816
Right-of-use assets obtained in exchange for new operating lease liabilities	0	0
Right-of-use assets obtained in exchange for new financing lease liabilities	$ 0	$ 0
Weighted-average remaining lease term (years) - operating leases (Year)	10 years 9 months 18 days	11 years 9 months 18 days
Weighted-average remaining lease term (years) - financing leases (Year)	8 months 12 days	1 year
Weighted-average discount rate - operating leases	6.75%	6.75%
Weighted-average discount rate - financing leases	6.75%	7.68%

v3.24.1.1.u2

Note 9 - Leases - Schedule of Future Minimum Lease Payments (Details) - USD ($)	Mar. 31, 2024	Dec. 31, 2023
2024 (excluding the three-months ended March 31, 2024), operating lease	$ 215,331
2024 (excluding the three-months ended March 31, 2024), finance lease	0
2025, operating lease	287,108
2025, finance lease	2,130
2026, operating lease	287,108
2026, finance lease	0
2027, operating lease	287,108
2027, finance lease	0
2028, operating lease	287,108
2028, finance lease	0
Thereafter, operating lease	1,738,084
Thereafter, finance lease	0
Total minimum operating lease obligations	3,101,847
Total minimum finance lease obligations	2,130
Less-amounts representing interest, operating lease	(903,903)
Less-amounts representing interest, finance lease	(53)
Present value of minimum operating lease obligations	2,197,944
Present value of minimum finance lease obligations	2,077
Current operating lease maturities	(143,121)	$ (140,733)
Current finance lease maturities	(2,077)	(2,832)
Operating lease obligations, net of current maturities	2,054,823	$ 2,091,511
Finance lease obligations, net of current maturities	$ 0

v3.24.1.1.u2

Note 10 - Segment Information (Details Textual)	3 Months Ended
	Mar. 31, 2024
Number of Reportable Segments	5

v3.24.1.1.u2

Note 10 - Segment Information - Schedule of Segment Information by Segment (Details) - USD ($)	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Sale of product	$ 2,904,458	$ 3,089,535
Depreciation and amortization	101,447	87,268
Net loss	(154,051)	(148,054)
Expenditures for segment assets	170,921	52,202
Segment assets	16,819,311		$ 16,905,087
Theranostics Products [Member]
Sale of product	1,905,082	1,762,396
Cobalt Products [Member]
Sale of product	233,968	158,308
Nuclear Medicine Products [Member]
Sale of product	765,408	1,168,831
Medical Device Products [Member]
Sale of product	0	0
Fluorine Products [Member]
Sale of product	0	0
Operating Segments [Member]
Sale of product	2,904,458	3,089,535
Depreciation and amortization	91,430	78,172
Net loss	949,374	840,413
Expenditures for segment assets	142,962	3,130
Segment assets	9,605,869		9,642,540
Operating Segments [Member] | Theranostics Products [Member]
Sale of product	1,905,082	1,762,396
Depreciation and amortization	9,046	7,159
Net loss	1,013,464	767,112
Expenditures for segment assets	93,924	0
Segment assets	1,116,697		849,351
Operating Segments [Member] | Cobalt Products [Member]
Sale of product	233,968	158,308
Depreciation and amortization	23,311	12,834
Net loss	(66,325)	(26,245)
Expenditures for segment assets	0	0
Segment assets	468,901		274,513
Operating Segments [Member] | Nuclear Medicine Products [Member]
Sale of product	765,408	1,168,831
Depreciation and amortization	32,978	29,209
Net loss	9,497	128,785
Expenditures for segment assets	49,038	3,130
Segment assets	2,514,148		2,986,458
Operating Segments [Member] | Medical Device Products [Member]
Sale of product	0	0
Depreciation and amortization	0	0
Net loss	(28,511)
Expenditures for segment assets		0
Segment assets	552,100		552,100
Operating Segments [Member] | Fluorine Products [Member]
Sale of product	0	0
Depreciation and amortization	26,095	28,970
Net loss	21,249	(29,239)
Expenditures for segment assets	0	0
Segment assets	4,954,023		4,980,118
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member]
Sale of product	0	0
Depreciation and amortization	10,017	9,096
Net loss	(1,103,425)	(988,467)
Expenditures for segment assets	27,959	$ 49,072
Segment assets	$ 7,213,442		$ 7,262,547

---