UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
 
FORM SD
Specialized Disclosure Report



Calix, Inc.
(Exact name of registrant as specified in its charter)
Delaware001-3467468-0438710
(State or other jurisdiction
of incorporation)
(Commission
File No.)
(I.R.S. Employer
Identification No.)
2777 Orchard Parkway, San Jose, California 95134
(Address of Principal Executive Offices) (Zip Code)

Doug McNitt,
EVP, General Counsel
(408) 514-3000
(Name and telephone number, including area code, of the person to contact in connection with this report)


Check the appropriate box to indicate the rule to which this form is being filed and provide the period to which the information in this form applies:

x    Rule 13p-1 under the Securities Exchange Act (17 CFR 240.13p-1) for the reporting period from January 1 to December 31, 2023.




Section 1 – Conflict Minerals Disclosure
Item 1.01 Conflict Minerals Disclosure and Report
Conflict Minerals Disclosure
A copy of Calix, Inc.’s Conflict Minerals Report is provided as Exhibit 1.01 to this Form SD and is publicly available at https://investor-relations.calix.com under Governance – Governance Documents.
Item 1.02 Exhibit
As required by Item 1.01 of this Form SD, a Conflict Minerals Report has been filed as Exhibit 1.01 to this Form SD.
Section 2 – Exhibits
Item 2.01 Exhibits
The following exhibit is filed as part of this Form SD:

2


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 hereunto duly authorized.
 
Date: May 31, 2024   CALIX, INC.
   By: /s/ Doug McNitt
    Doug McNitt
    EVP, General Counsel


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Exhibit 1.01

Conflict Minerals Report
Calix, Inc.
For the Year Ended December 31, 2023

This Conflict Minerals Report (“CMR”) is provided to comply with Rule 13p-1 of the Securities Exchange Act of 1934, as amended, for Calix, Inc. (“Calix”) for the calendar year ended December 31, 2023. Rule 13p-1, as implemented by the Securities and Exchange Commission (“SEC”), imposes reporting and disclosure requirements related to conflict minerals as directed by the Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010 (the “Act”). Rule 13p-1 applies to SEC registrants whose manufactured products contain conflict minerals which are necessary to the functionality or production of their products, other than conflict minerals sourced solely from recycled or scrap sources. Conflict minerals are defined as cassiterite, columbite-tantalite, gold, wolframite, and their derivatives, which are limited to tin, tantalum, tungsten and gold, referred to as 3TG.

If a registrant has reason to believe that any of the conflict minerals in their supply chain may have originated in the Democratic Republic of the Congo (“DRC”) or an adjoining country (together with the DRC, the “Covered Countries”), or a registrant is unable to determine the country of origin of those conflict minerals, then the Act requires that the registrant exercise due diligence on the source and chain of custody of those conflict minerals.

Overview

Calix is a leading global provider of cloud and software platforms, systems and services that focus on the access network, the portion of the network that governs available bandwidth and determines the range and quality of services that can be offered to subscribers. Calix’s cloud and software platforms enable communication service providers to provide a wide range of revenue-generating services, from basic voice and data to advanced broadband services, over legacy and next-generation access networks. Calix primarily relies upon third-party manufacturing partners to manufacture its products, including the purchase of components or materials that may contain smelted or refined minerals and the purchase raw ore or minerals. As a result of this third-party manufacturing model, Calix is several levels removed from the purchase of raw ore and minerals, and the mining of conflict minerals. These purchases occur much further upstream in Calix’s supply chain.

For purposes of Rule 13p-1, Calix engaged a third-party vendor to assist with survey efforts and outreach with our third-party manufacturing partners. This process included researching whether suppliers upstream in Calix’s supply chain utilized conflict minerals in the manufacture of products for Calix, and, if so, the origin of those conflict minerals. Because Calix relies upon third-party manufacturing partners, consisting of contract manufacturers and original design manufacturers, to source for and produce its products, in most cases, Calix has no visibility into the upstream suppliers and does not control the supplier sourcing decisions. In selecting manufacturing partners, Calix requires partners to regularly engage with and assess their supplier base to evaluate the components and materials used to produce Calix products.

Based on information obtained during this survey process for our manufacturing partners in 2023, Calix identified that some components and materials that are included in Calix products contain conflict minerals.

Reasonable Country of Origin Inquiry

In order to perform a reasonable country of origin inquiry (“RCOI”), Calix and its third party vendor, worked directly with suppliers and third-party manufacturers to conduct surveys of their direct supplier base to determine whether the conflict minerals contained in components of Calix products originated from the Covered Countries. This survey was conducted using the Conflict Minerals Reporting Template (“CMRT”) developed by the Responsible Minerals Initiative (“RMI”), and included inquiries related to the facilities used to process conflict minerals, a supplier’s commitment and processes to support conflict free sourcing and the smelters and refiners used.

1


For 2023, surveys were distributed to approximately 189 suppliers with a reported response rate of 97%. To support improved response rate and quality of the CMRT process, personnel that have oversight responsibilities for conflict minerals within our manufacturing partner organizations review the CMRT responses and engage with our manufacturing partners to conduct follow-up inquiries for CMRT completeness and accuracy.

Based on the RCOI described above, we have reason to believe that some of the components used in the manufacture of our products in 2023 contained conflict minerals that originated from the Covered Countries and were not sourced solely from recycled or scrap sources.

Supply Chain Due Diligence and Assessment

Based on the RCOI, and as required by Rule 13p-1, we undertook due diligence on our supply chain to ascertain whether the conflict minerals in Calix products directly or indirectly financed or benefited arms groups in the Covered Countries.

Based on our RCOI for 2023, there were approximately 507 smelters and refiners that were identified by suppliers as a source of conflict minerals, of which 178 were known to be sourcing conflict minerals originating from the Covered Countries and 3 were sourcing from an unknown country of origin. In accordance with the Organization for Economic Co-operation and Development Due Diligence Guidelines for Responsible Supply Chains of Minerals from High-Risk Areas and related supplements, Calix conducted further due diligence on its supply chain to assess the source and chain of custody of the conflict minerals, including taking the following actions:

Collection of conflict minerals information from the supply chain utilizing the CMRT
Reviews of supplier, smelter and refinery information in CMRT responses for plausibility, consistency and completeness
Follow-up efforts with suppliers for information about identified smelters and refiners
Engagement with suppliers for further conflict minerals reporting upstream through the supply chain
Review whether identified smelters and refiners, including those identified as a source of conflict minerals originating from the Covered Countries, are listed as participating in the Responsible Minerals Assurance Process (“RMAP”) operated by the RMI or otherwise verified as conflict free by industry recognized programs
Conduct supplier outreach as recommended and in support of RMI initiatives, particularly for non-responding suppliers

Based on the due diligence conducted, we determined that 178 of the smelters and refiners identified to supply conflict minerals originating in the Covered Countries are included on the RMI list of conformant, active and eligible smelters and refiners. Based on the information provided by our suppliers as of May 30, 2024, we believe that the facilities that may have been used to process the 3TG minerals in our products include the smelters and refiners listed in Appendix I to this CMR. Note that this list is likely to be both incomplete and over-inclusive of facilities in our supply chain. We are dependent on direct suppliers to identify the smelters and refiners in our supply chain. Although we request suppliers to provide information specific to the parts, components and products provided to us, most responses submitted are at a company-level, and not specific to our supply chain. In addition, many suppliers are disclosing that they have not yet completed their own due diligence and are unable to disclose a complete list of smelters and refiners. Pursuant to Rule 13p-1, this CMR is not subject to an independent private sector audit.

Ongoing Risk Management

We intend to continue our work with our manufacturing partners and suppliers to improve response rates to our conflict minerals surveys, including through direct and indirect outreach efforts, and to improve awareness upstream in the supply chain. We also expect to further refine conflict minerals assessments and inquiries as part of our supplier and manufacturer partner evaluation processes. This CMR is also available on Calix’s Investor Relations website at: https://investor-relations.calix.com under Governance – Governance Documents.

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Forward-Looking Statements

Statements made in this report that are not statements of historical fact are forward-looking statements. Forward-looking statements are subject to the “safe harbor” provisions of the Private Securities Litigation Reform Act of 1995. Forward-looking statements are based on our current expectations and assumptions about our business and operations and are subject to risks and uncertainties that could cause actual results to differ materially from expectations. These risks and uncertainties include the effect of changes in laws and regulations, economic, market and business conditions, the performance and operations of third-party partners and suppliers, availability of critical components and materials, and other risks as described in our Form 10-K and our quarterly reports on Form 10-Q, each as filed with the SEC. Forward-looking statements speak only as of the date the statements are made and are based on information available to us at the time those statements are made and/or management’s good faith belief as of that time with respect to future events. We assume no obligation to update forward-looking statements to reflect actual performance or results, changes in assumptions or changes in other factors affecting forward-looking information, except to the extent required by applicable securities laws.
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Appendix I

Smelter IDSmelter NameMetalSmelter Country
CID000019Aida Chemical Industries Co., Ltd.GoldJAPAN
CID000035Agosi AGGoldGERMANY
CID000041Almalyk Mining and Metallurgical Complex (AMMC)GoldUZBEKISTAN
CID000058AngloGold Ashanti Corrego do Sitio MineracaoGoldBRAZIL
CID000077Argor-Heraeus S.A.GoldSWITZERLAND
CID000082Asahi Pretec Corp.GoldJAPAN
CID000090Asaka Riken Co., Ltd.GoldJAPAN
CID000113Aurubis AGGoldGERMANY
CID000128Bangko Sentral ng Pilipinas (Central Bank of the Philippines)GoldPHILIPPINES
CID000157Boliden RonnskarGoldSWEDEN
CID000176C. Hafner GmbH + Co. KGGoldGERMANY
CID000185CCR Refinery - Glencore Canada CorporationGoldCANADA
CID000197Yunnan Copper Industry Co., Ltd.GoldCHINA
CID000233Chimet S.p.A.GoldITALY
CID000264Chugai MiningGoldJAPAN
CID000359DSC (Do Sung Corporation)GoldKOREA, REPUBLIC OF
CID000401DowaGoldJAPAN
CID000425Eco-System Recycling Co., Ltd. East PlantGoldJAPAN
CID000689LT Metal Ltd.GoldKOREA, REPUBLIC OF
CID000694Heimerle + Meule GmbHGoldGERMANY
CID000707Heraeus Metals Hong Kong Ltd.GoldCHINA
CID000711Heraeus Germany GmbH Co. KGGoldGERMANY
CID000773Hunan Guiyang yinxing Nonferrous Smelting Co., Ltd.GoldCHINA
CID000801Inner Mongolia Qiankun Gold and Silver Refinery Share Co., Ltd.GoldCHINA
CID000814Istanbul Gold RefineryGoldTURKEY
CID000823Japan MintGoldJAPAN
CID000855Jiangxi Copper Co., Ltd.GoldCHINA
CID000920Asahi Refining USA Inc.GoldUNITED STATES OF AMERICA
CID000924Asahi Refining Canada Ltd.GoldCANADA
CID000937JX Nippon Mining & Metals Co., Ltd.GoldJAPAN
CID000957KazzincGoldKAZAKHSTAN
CID000969Kennecott Utah Copper LLCGoldUNITED STATES OF AMERICA
CID000981Kojima Chemicals Co., Ltd.GoldJAPAN
CID001149Metalor Technologies (Hong Kong) Ltd.GoldCHINA
CID001152Metalor Technologies (Singapore) Pte., Ltd.GoldSINGAPORE
CID001153Metalor Technologies S.A.GoldSWITZERLAND
CID001157Metalor USA Refining CorporationGoldUNITED STATES OF AMERICA
CID001188Mitsubishi Materials CorporationGoldJAPAN
A-1


Smelter IDSmelter NameMetalSmelter Country
CID001259Nihon Material Co., Ltd.GoldJAPAN
CID001326OJSC "The Gulidov Krasnoyarsk Non-Ferrous Metals Plant" (OJSC Krastsvetmet)GoldRUSSIAN FEDERATION
CID001352MKS PAMP SAGoldSWITZERLAND
CID001386Prioksky Plant of Non-Ferrous MetalsGoldRUSSIAN FEDERATION
CID001512Rand Refinery (Pty) Ltd.GoldSOUTH AFRICA
CID001555Samduck Precious MetalsGoldKOREA, REPUBLIC OF
CID001916Shandong Gold Smelting Co., Ltd.GoldCHINA
CID001955TorecomGoldKOREA, REPUBLIC OF
CID001993United Precious Metal Refining, Inc.GoldUNITED STATES OF AMERICA
CID002003Valcambi S.A.GoldSWITZERLAND
CID002129Yokohama Metal Co., Ltd.GoldJAPAN
CID002509MMTC-PAMP India Pvt., Ltd.GoldINDIA
CID002511KGHM Polska Miedz Spolka AkcyjnaGoldPOLAND
CID002515Fidelity Printers and Refiners Ltd.GoldZIMBABWE
CID002560Al Etihad Gold Refinery DMCCGoldUNITED ARAB EMIRATES
CID002561Emirates Gold DMCCGoldUNITED ARAB EMIRATES
CID002567Sudan Gold RefineryGoldSUDAN
CID002605Korea Zinc Co., Ltd.GoldKOREA, REPUBLIC OF
CID002762L'Orfebre S.A.GoldANDORRA
CID002765ItalpreziosiGoldITALY
CID002778WIELAND Edelmetalle GmbHGoldGERMANY
CID002850AU Traders and RefinersGoldSOUTH AFRICA
CID002919Planta Recuperadora de Metales SpAGoldCHILE
CID002973Safimet S.p.AGoldITALY
CID003153State Research Institute Center for Physical Sciences and TechnologyGoldLITHUANIA
CID003185African Gold Refinery*GoldUGANDA
CID003189NH Recytech CompanyGoldKOREA, REPUBLIC OF
CID003324QG Refining, LLCGoldUNITED STATES OF AMERICA
CID003383Sovereign MetalsGoldINDIA
CID003497K.A. RasmussenGoldNORWAY
CID003641Gold by Gold ColombiaGoldCOLOMBIA
CID000211Changsha South Tantalum Niobium Co., Ltd.TantalumCHINA
CID000456Exotech Inc.TantalumUNITED STATES OF AMERICA
CID000460F&X Electro-Materials Ltd.TantalumCHINA
CID000616XIMEI RESOURCES (GUANGDONG) LIMITEDTantalumCHINA
CID000914JiuJiang JinXin Nonferrous Metals Co., Ltd.TantalumCHINA
CID000917Jiujiang Tanbre Co., Ltd.TantalumCHINA
CID001076AMG BrasilTantalumBRAZIL
CID001163Metallurgical Products India Pvt., Ltd.TantalumINDIA
CID001175Mineracao Taboca S.A.TantalumBRAZIL
CID001192Mitsui Mining and Smelting Co., Ltd.TantalumJAPAN
CID001200NPM Silmet ASTantalumESTONIA
A-2


Smelter IDSmelter NameMetalSmelter Country
CID001277Ningxia Orient Tantalum Industry Co., Ltd.TantalumCHINA
CID001508QuantumCleanTantalumUNITED STATES OF AMERICA
CID001522Yanling Jincheng Tantalum & Niobium Co., Ltd.TantalumCHINA
CID001769Solikamsk Magnesium Works OAOTantalumRUSSIAN FEDERATION
CID001869Taki Chemical Co., Ltd.TantalumJAPAN
CID001891Telex MetalsTantalumUNITED STATES OF AMERICA
CID001969Ulba Metallurgical Plant JSCTantalumKAZAKHSTAN
CID002492Hengyang King Xing Lifeng New Materials Co., Ltd.TantalumCHINA
CID002504D Block Metals, LLCTantalumUNITED STATES OF AMERICA
CID002505FIR Metals & Resource Ltd.TantalumCHINA
CID002506Jiujiang Zhongao Tantalum & Niobium Co., Ltd.TantalumCHINA
CID002508XinXing HaoRong Electronic Material Co., Ltd.TantalumCHINA
CID002512Jiangxi Dinghai Tantalum & Niobium Co., Ltd.TantalumCHINA
CID002539KEMET de MexicoTantalumMEXICO
CID002544TANIOBIS Co., Ltd.TantalumTHAILAND
CID002545TANIOBIS GmbHTantalumGERMANY
CID002548Materion Newton Inc.TantalumUNITED STATES OF AMERICA
CID002549TANIOBIS Japan Co., Ltd.TantalumJAPAN
CID002550TANIOBIS Smelting GmbH & Co. KGTantalumGERMANY
CID002557Global Advanced Metals BoyertownTantalumUNITED STATES OF AMERICA
CID002558Global Advanced Metals AizuTantalumJAPAN
CID002707Resind Industria e Comercio Ltda.TantalumBRAZIL
CID002842Jiangxi Tuohong New Raw MaterialTantalumCHINA
CID004054PowerX Ltd.TantalumRWANDA
CID000228Chenzhou Yunxiang Mining and Metallurgy Co., Ltd.TinCHINA
CID000292AlphaTinUNITED STATES OF AMERICA
CID000402DowaTinJAPAN
CID000438EM VintoTinN.A.BOLIVIA (Plurinational STATE OF)
CID000448Estanho de Rondonia S.A.TinBRAZIL
CID000468Fenix MetalsTinPOLAND
CID000538Gejiu Non-Ferrous Metal Processing Co., Ltd.TinCHINA
CID000555Gejiu Zili Mining And Metallurgy Co., Ltd.TinCHINA
CID001070China Tin Group Co., Ltd.TinCHINA
CID001105Malaysia Smelting Corporation (MSC)TinMALAYSIA
CID001142Metallic Resources, Inc.TinUNITED STATES OF AMERICA
CID001173Mineracao Taboca S.A.TinBRAZIL
CID001182MinsurTinPERU
CID001191Mitsubishi Materials CorporationTinJAPAN
CID001231Jiangxi New Nanshan Technology Ltd.TinCHINA
CID001337Operaciones Metalurgicas S.A.TinN.A.BOLIVIA (Plurinational STATE OF)
A-3


Smelter IDSmelter NameMetalSmelter Country
CID001453PT Mitra Stania PrimaTinINDONESIA
CID001460PT Refined Bangka TinTinINDONESIA
CID001477PT Timah Tbk KundurTinINDONESIA
CID001482PT Timah Tbk MentokTinINDONESIA
CID001486PT Timah NusantaraTinINDONESIA
CID001490PT Tinindo Inter NusaTinINDONESIA
CID001539Rui Da HungTinTAIWAN, PROVINCE OF CHINA
CID001758Soft Metais Ltda.TinBRAZIL
CID001898ThaisarcoTinTHAILAND
CID002015VQB Mineral and Trading Group JSCTinVIET NAM
CID002036White Solder Metalurgia e Mineracao Ltda.TinBRAZIL
CID002158Yunnan Chengfeng Non-ferrous Metals Co., Ltd.TinCHINA
CID002180Tin Smelting Branch of Yunnan Tin Co., Ltd.TinCHINA
CID002468Magnu's Minerais Metais e Ligas Ltda.TinBRAZIL
CID002517O.M. Manufacturing Philippines, Inc.TinPHILIPPINES
CID002573Nghe Tinh Non-Ferrous Metals Joint Stock CompanyTinVIET NAM
CID002706Resind Industria e Comercio Ltda.TinBRAZIL
CID002756Super LigasTinBRAZIL
CID002773Aurubis BeerseTinBELGIUM
CID002774Aurubis BerangoTinSPAIN
CID003116Guangdong Hanhe Non-Ferrous Metal Co., Ltd.TinCHINA
CID003190Chifeng Dajingzi Tin Industry Co., Ltd.TinCHINA
CID003325Tin Technology & RefiningTinUNITED STATES OF AMERICA
CID003387Luna Smelter, Ltd.TinRWANDA
CID003449PT Mitra Sukses GlobalindoTinINDONESIA
CID003582Fabrica Auricchio Industria e Comercio Ltda.TinBRAZIL
CID003831DS MyanmarTinMYANMAR
CID003868PT Putera Sarana Shakti (PT PSS)TinINDONESIA
CID004065Mining Minerals Resources SARLTinCONGO, DEMOCRATIC REPUBLIC OF THE
CID000004A.L.M.T. Corp.TungstenJAPAN
CID000105Kennametal HuntsvilleTungstenUNITED STATES OF AMERICA
CID000218Guangdong Xianglu Tungsten Co., Ltd.TungstenCHINA
CID000258Chongyi Zhangyuan Tungsten Co., Ltd.TungstenCHINA
CID000568Global Tungsten & Powders LLCTungstenUNITED STATES OF AMERICA
CID000766Hunan Chenzhou Mining Co., Ltd.TungstenCHINA
CID000825Japan New Metals Co., Ltd.TungstenJAPAN
CID000966Kennametal FallonTungstenUNITED STATES OF AMERICA
CID002044Wolfram Bergbau und Hutten AGTungstenAUSTRIA
CID002082Xiamen Tungsten Co., Ltd.TungstenCHINA
CID002315Ganzhou Jiangwu Ferrotungsten Co., Ltd.TungstenCHINA
CID002316Jiangxi Yaosheng Tungsten Co., Ltd.TungstenCHINA
A-4


Smelter IDSmelter NameMetalSmelter Country
CID002317Jiangxi Xinsheng Tungsten Industry Co., Ltd.TungstenCHINA
CID002318Jiangxi Tonggu Non-ferrous Metallurgical & Chemical Co., Ltd.TungstenCHINA
CID002320Xiamen Tungsten (H.C.) Co., Ltd.TungstenCHINA
CID002321Jiangxi Gan Bei Tungsten Co., Ltd.TungstenCHINA
CID002494Ganzhou Seadragon W & Mo Co., Ltd.TungstenCHINA
CID002502Asia Tungsten Products Vietnam Ltd.TungstenVIET NAM
CID002513Hunan Shizhuyuan Nonferrous Metals Co., Ltd. Chenzhou Tungsten Products BranchTungstenCHINA
CID002541H.C. Starck Tungsten GmbHTungstenGERMANY
CID002542TANIOBIS Smelting GmbH & Co. KGTungstenGERMANY
CID002543Masan High-Tech MaterialsTungstenVIET NAM
CID002551Jiangwu H.C. Starck Tungsten Products Co., Ltd.TungstenCHINA
CID002589Niagara Refining LLCTungstenUNITED STATES OF AMERICA
CID002641China Molybdenum Tungsten Co., Ltd.TungstenCHINA
CID002645Ganzhou Haichuang Tungsten Co., Ltd.TungstenCHINA
CID002649Hydrometallurg, JSCTungstenRUSSIAN FEDERATION
CID003427Albasteel Industria e Comercio de Ligas Para Fundicao Ltd.TungstenBRAZIL
CID003468Cronimet Brasil LtdaTungstenBRAZIL
* Certain surveyed suppliers reported potential sourcing of 3TG in 2023 from CID003185 - African Gold Refinery (“AGR”). To our knowledge, AGR is a gold smelter in a Covered Country and is not currently listed as a conformant or active facility by the RMI. Furthermore, on March 17, 2022, the United States Department of Treasury’s Office of Foreign Assets Control designated AGR as a Specially Designated National. Calix has not identified any direct transactions or contractual relationships with AGR, and to date has not received confirmation from any of our suppliers that they utilized 3TG sourced from AGR in any of Calix’s products in 2023. Calix continues to work with our suppliers to ensure improved transparency and accountability in our supply chain.
A-5

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