EBS Emergent Biosolutions Inc

Filed pursuant to Rule 424(b)(3)
Registration No. 333-283150

PROSPECTUS

Emergent BioSolutions Inc.

Up to 3,613,338 shares of Common Stock

2,500,000 Warrants to Purchase up to 2,500,000 Shares of Common Stock

This prospectus relates to the offer and sale from time to time, by the selling securityholders identified in this prospectus, of (i) up to 3,613,338 shares of the common stock, $0.001 par value per share (the “Common Stock”), of Emergent BioSolutions Inc. (the “Company”), which includes 1,113,338 shares of Common Stock that are currently outstanding and up to 2,500,000 shares of Common Stock issuable upon the exercise of the 2,500,000 Warrants (defined herein), (ii) 1,000,000 warrants to purchase up to 1,000,000 shares of Common Stock at an exercise price of $9.8802 per share (the “Series I Warrants”) and (iii) 1,500,000 warrants to purchase up to 1,500,000 shares of Common Stock at an exercise price of $15.7185 per share (the “Series II Warrants” and, together with the Series I warrants, the “Warrants”). The securities referenced above were issued in connection with the Credit Agreement, dated August 30, 2024, by and among the Company, the lenders from time to time party thereto, and OHA Agency LLC, as administrative agent (the “Credit Agreement”), the Warrant Agreement, dated August 30, 2024, between the Company and Broadridge Corporate Issuer Solutions LLC, as Warrant Agent (the “Warrant Agreement”), and the Subscription Agreement, dated August 30, 2024, between the Company and the lenders under the Credit Agreement (the “Subscription Agreement”).

The Common Stock and the Warrants may be offered and sold from time to time by the entities or individuals listed in the section titled “Selling Securityholders” beginning on page 6 (the “Selling Securityholders”). We are registering these securities for sale by the Selling Securityholders to satisfy certain registration rights that we have granted to the Selling Securityholders. We are not selling any securities under this prospectus and will not receive any of the proceeds from the sale of securities by the Selling Securityholders. However, the Company will receive the proceeds of any cash exercise of the Warrants. We will pay the expenses incurred in registering the securities covered by the prospectus, including legal and accounting fees. The Selling Securityholders will bear all commissions and discounts, if any, attributable to its respective sales of securities under this prospectus.

The Selling Securityholders may sell the securities described in this prospectus in a number of different ways and at varying prices. We provide more information about how a Selling Securityholder may sell its securities in the section titled “Plan of Distribution” on page 8.

Our Common Stock is listed on the New York Stock Exchange, under the symbol “EBS.” On December 3, 2024, the last reported sale price of our common stock on the New York Stock Exchange was $9.29 per share.

There is no established trading market for any of the Warrants and we do not expect a market to develop. We do not intend to apply for a listing for any of the Warrants on any securities exchange or other nationally recognized trading system. Without an active trading market, the liquidity of the Warrants will be limited.

Investing in our securities involves a high degree of risk. Before making an investment decision, please read “Risk Factors” on page 3 of this prospectus and in the documents incorporated by reference herein.

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or determined if this prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

The date of this prospectus is December 4, 2024.

TABLE OF CONTENTS

i

ABOUT THIS PROSPECTUS

This prospectus is part of a registration statement that we filed with the Securities and Exchange Commission (the “SEC”), under which the Selling Securityholders may, from time to time, sell the securities described in this prospectus in one or more offerings.

Neither we nor the Selling Securityholders have authorized anyone to provide you with information that is different from or in addition to the information contained or incorporated by reference in this prospectus. Accordingly, neither we nor any Selling Securityholder takes any responsibility for, or can provide any assurance as to the reliability of, any information that others may give. The Selling Securityholders are offering to sell, and seeking offers to buy, our securities only in jurisdictions where it is lawful to do so. This prospectus does not constitute an offer to sell or the solicitation of an offer to buy any securities other than where offers and sales of these securities are permitted or an offer to sell or the solicitation of an offer to buy such securities in any circumstances in which such offer or solicitation is unlawful. You should assume that the information appearing in this prospectus is accurate only as of the date of this prospectus and that any information we have incorporated by reference is accurate only as of the date of the document incorporated by reference, regardless of the time of delivery of this prospectus, or any sale of our securities. Our business, financial condition, results of operations and prospects may have changed materially since those dates.

In making your investment decision it is important for you to read and consider all information contained in this prospectus. You should also read and consider the information in the documents to which we have referred you in the section titled “Incorporation of Certain Documents by Reference” in this prospectus. To the extent the information contained in this prospectus differs or varies from the information contained in documents previously filed with the SEC that are incorporated by reference herein, the information in this prospectus will supersede such information.

Unless the context otherwise indicates, references in this prospectus to “Emergent,” the “Company,” “we,” “us,” and “our” refer to Emergent BioSolutions Inc. and its consolidated subsidiaries.

Emergent^®, BioThrax^®, BaciThrax^®, BAT^®, Trobigard^®, Anthrasil^®, CNJ-016^®, ACAM2000^®, NARCAN^®, CYFENDUS^®, TEMBEXA^® and any and all Emergent BioSolutions Inc. brands, products, services and feature names, logos and slogans are trademarks or registered trademarks of Emergent BioSolutions Inc. or its subsidiaries in the United States or other countries. All other brands, products, services and feature names or trademarks are the property of their respective owners, including RSDL^® (Reactive Skin Decontamination Lotion), which was acquired by BTG International Inc., a subsidiary of SERB Pharmaceuticals on July 31, 2024.

ii

CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS

This prospectus and the documents that are incorporated by reference in this prospectus include 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 the future performance of Emergent BioSolutions Inc. or any of our businesses, our business strategy, future operations, future financial position, future revenues and earnings, our ability to achieve the objectives of our restructuring initiatives and divestitures, including our future results, projected costs, prospects, plans and objectives of management, are forward-looking statements. We generally identify forward-looking statements by using words like “anticipate,” “believe,” “continue,” “could,” “estimate,” “expect,” “forecast,” “future,” “goal,” “intend,” “may,” “plan,” “position,” “possible,” “potential,” “predict,” “project,” “should,” “target,” “will,” “would,” and similar expressions or variations thereof, or the negative thereof, but these terms are not the exclusive means of identifying such statements. These forward-looking statements are based on our current intentions, beliefs, assumptions and expectations regarding future events based on information that is currently available. You should realize that if underlying assumptions prove inaccurate or unknown risks or uncertainties materialize, actual results could differ materially from our expectations. You are, therefore, cautioned not to place undue reliance on any forward-looking statement contained herein. Any such forward-looking statement speaks only as of the date on which such statement is made and, except as required by law, we do not undertake any obligation to update any forward-looking statement to reflect new information, events or circumstances.

There are a number of important factors that could cause our actual results to differ materially from those indicated by such forward-looking statements, including, among others:

iii

The foregoing sets forth many, but not all, of the factors that could cause actual results to differ from our expectations in any forward-looking statement. When evaluating our forward-looking statements, you should consider this cautionary statement along with the risk factors identified in the section entitled “Risk Factors” in this prospectus and the sections entitled “Risk Factors,” “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and “Quantitative and Qualitative Disclosures about Market Risk” in our most recent Annual Report on Form 10-K and subsequent Quarterly Reports on Form 10-Q, and all other information contained or incorporated by reference into this prospectus. New factors may emerge from time to time, and it is not possible for management to predict all such factors, nor can it assess the impact of any such factor on the business or the extent to which any factor, or combination of factors, may cause results to differ materially from those contained in any forward-looking statement.

iv

1

2

RISK FACTORS

An investment in our securities involves significant risks. Before making an investment in our securities, you should carefully read all of the information contained in this prospectus and in the documents incorporated by reference herein. For a discussion of risks that you should carefully consider before deciding to purchase any of our securities, please review the risk factors disclosed below, together with the other information in this prospectus and the information and documents incorporated by reference herein, including the risk factors set forth in the “Risk Factors” section of our most recent Annual Report on Form 10-K and subsequent Quarterly Reports on Form 10-Q, and all other information contained or incorporated by reference into this prospectus. Any of these risks, as well as additional risks not currently known to us or that we currently deem immaterial, may adversely affect our business, financial condition, results of operations, and prospects, resulting in a decline in the trading price of our Common Stock and loss of all or part of your investment.

Risks Related to this Offering

Our stock price is volatile, and purchasers of our securities could incur substantial losses.

The price of our Common Stock price has been, and is likely to continue to be, volatile. The market price of our Common Stock could fluctuate significantly for many reasons, including in response to the risks described in this “Risk Factors” section, or for reasons unrelated to our operations, such as reports by industry analysts, investor perceptions or negative announcements by our customers, competitors or suppliers regarding their own performance, as well as industry conditions and general financial, economic and political instability. From January 1, 2023 through the date of this prospectus, our Common Stock has traded as high as $16.66 per share and as low as $1.42 per share. The market price of our Common Stock may be influenced by many factors, including, among others:

Future sales of Common Stock or other securities convertible into Common Stock, or the perception that such sales or issuances could occur, could cause the market value of Common Stock to decline and could result in dilution of your shares.

Our board of directors is authorized, without stockholder approval, to cause us to issue additional shares of Common Stock or to raise capital through the issuance of preferred shares or the sale of debt securities that are convertible into Common Stock, options, warrants and other rights, on terms and for consideration as our board of directors in its sole discretion may determine. We also require substantial additional funding to be able to continue as a going concern and we may seek to achieve such funding through future sales of Common Stock or other securities convertible into Common Stock. Sales of substantial amounts of Common Stock or the issuance of preferred shares, convertible debt, options, restricted stock units, performance stock units, warrants and other rights, or the perception that such sales or issuances could occur, could cause the market price of our Common Stock to decrease significantly.

3

As of September 30, 2024, we had 54,059,371 shares of Common Stock outstanding. We cannot predict the effect, if any, of future sales of Common Stock, preferred shares, convertible debt securities, options, restricted stock units, performance stock units, warrants or other rights or the availability of our Common Stock for future sales on the value of our Common Stock.

4

USE OF PROCEEDS

We will not receive any of the proceeds from the sale of securities by the Selling Securityholders named in this prospectus. However, the Company will receive the proceeds of any cash exercise of the Warrants. If all of the Warrants were exercised for cash, we would receive aggregate proceeds of $33,457,950.

5

SELLING SECURITYHOLDERS

This prospectus relates to the offer and sale from time to time by the Selling Securityholders listed below of up to 3,613,338 shares of Common Stock, which includes up to 1,113,338 shares of Common Stock issued under the Subscription Agreement, and up to 2,500,000 shares of Common Stock issuable upon the exercise of the 2,500,000 Warrants issued under the Warrant Agreement, which consist of (i) 1,000,000 Series I Warrants to purchase up to 1,000,000 shares of Common Stock issued under the Warrant Agreement and (ii) 1,500,000 Series II Warrants to purchase up to 1,500,000 shares of Common Stock issued under the Warrant Agreement. The securities covered hereby were issued to the lenders under the Credit Agreement. We are registering these securities for sale by the Selling Securityholders to satisfy certain registration rights that we have granted to the Selling Securityholders.

The Selling Securityholders may from time to time offer and sell any or all of the securities set forth below pursuant to this prospectus. As used in this prospectus, the term “Selling Securityholders” includes the persons listed in the table below, together with any additional selling securityholders listed in a subsequent amendment to this prospectus, and their pledgees, donees, transferees, assignees, successors, designees and others who later come to hold any of the Selling Securityholders’ interests in the securities, other than through a public sale.

The following table sets forth certain information as of December 2, 2024 regarding the beneficial ownership of the Common Stock and Warrants being offered by the Selling Securityholders. The applicable percentage ownership of Common Stock is based on 54,059,371 shares of Common Stock outstanding as of September 30, 2024. Information with respect to Common Stock owned beneficially after the offering assumes the sale of all of the Common Stock registered hereby, including shares of Common Stock underlying the Warrants, and assumes no further acquisitions or dispositions of securities by the Selling Securityholders. The Selling Securityholders may offer and sell some, all or none of their Common Stock or Warrants.

Beneficial ownership is determined in accordance with the rules and regulations of the SEC. A person is a “beneficial owner” of a security if that person has or shares “voting power,” which includes the power to vote or to direct the voting of the security, or “investment power,” which includes the power to dispose of or to direct the disposition of the security, or has the right to acquire such powers within 60 days.

Unless otherwise noted in the footnotes to the following table, and subject to applicable community property laws, the persons and entities named in the table have sole voting and investment power with respect to their beneficially owned Common Stock and Warrants.

Please see the section titled “Plan of Distribution” in this prospectus for further information regarding the Selling Securityholders’ method of distributing these securities.

6

(1) This table and the information in this note are based upon information supplied by the Selling Securityholders. Glenn R. August may be deemed to have investment discretion and voting power over the securities held by all the Selling Securityholders above. The address of the Selling Securityholders is c/o Oak Hill Advisors, L.P., 1 Vanderbilt Avenue, 16th Floor, New York, New York 10017.

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PLAN OF DISTRIBUTION

The Selling Securityholders and their permitted pledgees, donees, transferees, distributees, beneficiaries or other successors in interest, may from time to time offer some or all of the securities covered by this prospectus. We will not receive any of the proceeds from such sales by the Selling Securityholders. We will bear all fees and expenses incident to our obligation to register such securities.

The Selling Securityholders may, from time to time, sell any or all of their securities covered hereby on the New York Stock Exchange or any other stock exchange, market or trading facility on which the securities are traded or in private transactions. These sales may be at fixed or negotiated prices. If the securities are sold through underwriters or broker-dealers, each Selling Securityholder will be responsible for underwriting discounts or commissions or agent’s commissions in connection with the securities held by such Selling Securityholder. A Selling Securityholder may use any one or more of the following methods when selling securities:

The Selling Securityholders may, from time to time, pledge or grant a security interest in some or all of the securities owned by it and, if a Selling Securityholder defaults in the performance of its secured obligations, the pledgees or secured parties may offer and sell the securities, from time to time, under this prospectus, or under an amendment to this prospectus under Rule 424(b)(3) or other applicable provision of the Securities Act amending the list of the Selling Securityholders to include the pledgee, transferee, or other successors in interest as the Selling Securityholders under this prospectus. The Selling Securityholders also may transfer the securities owned by them in other circumstances, in which case the transferees, pledgees or other successors in interest will be the beneficial owners for purposes of this prospectus.

In connection with the sale of the securities, or interests therein, the Selling Securityholders may enter into hedging transactions with broker-dealers or affiliates thereof or other financial institutions, which may in turn engage in short sales of our Common Stock in the course of hedging the positions it assumes. The Selling Securityholders may also sell securities short and deliver the securities to close out their short positions, or loan or pledge the securities to broker-dealers that in turn may sell these securities. The Selling Securityholders may also enter into option or other transactions with broker-dealers or affiliates thereof or other financial institutions or the creation of one or more derivative securities which require the delivery to such broker-dealer or affiliates thereof or other financial institution of securities offered by this prospectus, which securities such broker-dealer or other financial institution may resell pursuant to this prospectus (as supplemented or amended to reflect such transaction).

8

In addition, the Selling Securityholders may enter into derivative or hedging transactions with third parties, or sell securities not covered by this prospectus to third parties in privately negotiated transactions. In connection with such a transaction, the third parties may sell the applicable securities covered by and pursuant to this prospectus and an applicable prospectus supplement or pricing supplement, as the case may be. If so, the third party may use securities borrowed from Selling Securityholders or others to settle such sales and may use securities received from Selling Securityholders to close out any related short positions. The Selling Securityholders may also loan or pledge securities covered by this prospectus and an applicable prospectus supplement to third parties, who may sell the loaned securities or, in an event of default in the case of a pledge, sell the pledged securities pursuant to this prospectus and the applicable prospectus supplement or pricing supplement, as the case may be.

In effecting sales, broker-dealers or agents engaged by the Selling Securityholders may arrange for other broker-dealers to participate. Broker-dealers or agents may receive commissions, discounts or concessions from the Selling Securityholders in amounts to be negotiated immediately prior to the sale.

In offering the securities covered by this prospectus, the Selling Securityholders and any broker-dealers who execute sales for them may be deemed to be “underwriters” within the meaning of the Securities Act in connection with such sales. Any profits realized by Selling Stockholders who are “underwriters,” and the compensation of any broker-dealer who executes sales for them, may be deemed to be underwriting discounts and commissions.

In order to comply with the securities laws of certain states, if applicable, the securities must be sold in such jurisdictions only through registered or licensed brokers or dealers. In addition, in certain states the securities may not be sold unless they have been registered or qualified for sale in the applicable state or an exemption from the registration or qualification requirement is available and is complied with.

We have advised the Selling Securityholders that the anti-manipulation rules of Regulation M under the Exchange Act may apply to sales of securities in the market and to the activities of the Selling Securityholders and their affiliates. In addition, we will make copies of this prospectus available to the Selling Securityholders for the purpose of satisfying the prospectus delivery requirements of the Securities Act. The Selling Securityholders may indemnify any broker-dealer that participates in transactions involving the sale of the securities against certain liabilities, including liabilities arising under the Securities Act.

At the time a particular offer of securities is made, if required, a prospectus supplement will be distributed that will set forth the number of securities being offered and the terms of the offering, including the name of any underwriter, dealer or agent, the purchase price paid by any underwriter, any discount, commission and other item constituting compensation, any discount, commission or concession allowed or reallowed or paid to any dealer, and the proposed selling price to the public.

9

LEGAL MATTERS

Unless otherwise indicated in the applicable prospectus supplement, the validity of the securities offered hereby will be passed upon for us by Covington & Burling LLP, Washington, D.C. If legal matters are passed upon by counsel for the underwriters, dealers or agents, if any, such counsel will be named in the prospectus supplement relating to such offering.

EXPERTS

Ernst & Young LLP, independent registered public accounting firm, has audited our consolidated financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2023, and the effectiveness of our internal control over financial reporting as of December 31, 2023, as set forth in their reports (which contains an explanatory paragraph describing conditions that raise substantial doubt about the Company’s ability to continue as a going concern as described in Note 2 to the consolidated financial statements), which are incorporated by reference in this prospectus and elsewhere in this registration statement. Our financial statements are incorporated by reference in reliance on Ernst & Young LLP’s reports, given on their authority as experts in accounting and auditing.

WHERE YOU CAN FIND MORE INFORMATION

We file annual, quarterly and current reports, proxy statements and other information with the SEC. Our SEC filings are available to the public over the Internet at the SEC’s website at www.sec.gov. Copies of certain information filed by us with the SEC are also available on our website at www.emergentbiosolutions.com. The information on our website, however, is not, and should not be deemed to be, a part of this prospectus. All website addresses in this prospectus are intended to be inactive textual references only.

This prospectus is part of a registration statement we filed with the SEC. This prospectus omits some information contained in the registration statement in accordance with SEC rules and regulations. You should review the information and exhibits in the registration statement for further information about us and our consolidated subsidiaries and the securities that are being offered by the Selling Securityholders. Statements in this prospectus concerning any document we filed as an exhibit to the registration statement or that we otherwise filed with the SEC are not intended to be comprehensive and are qualified by reference to these filings. You should review the complete document to evaluate these statements.

INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE

The SEC allows us to “incorporate by reference” the information we file with it, which means that we can disclose important information to you by referring you to those publicly available documents. The information that we incorporate by reference in this prospectus is considered to be part of this prospectus. You should refer to the registration statement, including the exhibits, for further information about us and the securities we may offer pursuant to this prospectus. Statements in this prospectus regarding the provisions of certain documents filed with, or incorporated by reference in, the registration statement are not necessarily complete and each statement is qualified in all respects by that reference. We incorporate by reference into this prospectus the documents listed below (except in each case in which the information contained in such documents is “furnished” and not “filed”). The documents we are incorporating by reference as of their respective dates of filing are:

10

You may request a copy these filings, at no cost, by writing or telephoning us at the following address or telephone number:

Emergent BioSolutions Inc.

300 Professional Drive

Gaithersburg, Maryland 20879

Attention: Investor Relations

(240) 631-3200

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EMERGENT BIOSOLUTIONS INC.

Up to 3,613,338 shares of Common Stock

2,500,000 Warrants to Purchase up to 2,500,000 shares of Common Stock

PROSPECTUS

December 4, 2024