Form: SD

Specialized disclosure report

May 30, 2025

Documents


Exhibit 1.01

Conflict Minerals Report
Calix, Inc.
For the Year Ended December 31, 2024

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, 2024. 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, 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 of 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 are made by Calix’s third-party manufacturers’ sub-tier suppliers.

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 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 2024, 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.

For 2024, surveys were distributed to approximately 159 suppliers with a response rate of 97%.
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Based on the RCOI described above, we have reason to believe that some of the components used in the manufacture of our products in 2024 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. Our due diligence process is structured in accordance with the five-step framework of the Organization for Economic Co-operation and Development (“OECD”) in the publication OECD (2013) Due Diligence Guidance for Responsible Supply Chains of Minerals from High-Risk Areas: Second Edition, OECD Publishing (“OECD Guidance”) and the related Supplements for 3TG.

Based on our RCOI for 2024, there were approximately 364 smelters and refiners that were identified by suppliers as a source of conflict minerals, of which 79 were known to be sourcing conflict minerals originating from the Covered Countries. This determination was primarily based on supplier declarations within the CMRT and cross-referenced with RMI’s published list of smelters known to source from Covered Countries.

In accordance with the OECD Guidance 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. For any inconsistencies or missing information, we directly contacted suppliers via email and phone calls, requesting clarification and additional supporting documentation.
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, including engagement during business review meetings held on at least a quarterly cadence to emphasize the need for more granular upstream reporting and data sharing.
Review whether identified smelters and refiners, who were 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 all 79 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 12, 2025, we believe that the facilities in the Covered Countries that may have been used to process the conflict 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 our third-party manufacturing partners 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. This can result in the inclusion of smelters in Appendix I that may not be directly tied to components in Calix products, making the list over-inclusive. We are actively working to encourage our manufacturing partners to provide more granular, product-specific data. 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.

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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. Our goal is to increase the percentage of product-specific CMRT responses, providing us with a clearer picture of our direct supply chain. We will continue to engage with suppliers who provide company-level data to help them develop more precise reporting. We also expect to further refine conflict minerals assessments and inquiries as part of our supplier and manufacturer partner evaluation processes. This refinement includes incorporating conflict mineral performance into our supplier scoring mechanisms and engaging in targeted discussions with high-volume or high-risk suppliers to improve their due diligence practices. This CMR is also available on Calix’s Investor Relations website at: https://investor-relations.calix.com under Governance – Governance Documents.

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
CID000004A.L.M.T. Corp.TungstenJapan
CID003185*African Gold RefineryGoldUganda
CID003427Albasteel Industria e Comercio de Ligas Para Fundicao Ltd.TungstenBrazil
CID000041Almalyk Mining and Metallurgical Complex (AMMC)GoldUzbekistan
CID001076AMG BrasilTantalumBrazil
CID000058AngloGold Ashanti Corrego do Sitio MineracaoGoldBrazil
CID000920Asahi Refining USA Inc.GoldUnited States Of America
CID002502Asia Tungsten Products Vietnam Ltd.TungstenViet Nam
CID002850AU Traders and RefinersGoldSouth Africa
CID002773Aurubis BeerseTinBelgium
CID000185CCR Refinery - Glencore Canada CorporationGoldCanada
CID000258Chongyi Zhangyuan Tungsten Co., Ltd.TungstenChina
CID002504D Block Metals, LLCTantalumUnited States Of America
CID002561Emirates Gold DMCCGoldUnited Arab Emirates
CID000460F&X Electro-Materials Ltd.TantalumChina
CID002515Fidelity Printers and Refiners Ltd.GoldZimbabwe
CID002315Ganzhou Jiangwu Ferrotungsten Co., Ltd.TungstenChina
CID002558Global Advanced Metals AizuTantalumJapan
CID002557Global Advanced Metals BoyertownTantalumUnited States Of America
CID000568Global Tungsten & Powders LLCTungstenUnited States Of America
CID000291Guangdong Rising Rare Metals-EO Materials Ltd.TantalumChina
CID002541H.C. Starck Tungsten GmbHTungstenGermany
CID000694Heimerle + Meule GmbHGoldGermany
CID000773Hunan Guiyang yinxing Nonferrous Smelting Co., Ltd.GoldChina
CID002649Hydrometallurg, JSCTungstenRussian Federation
CID000814Istanbul Gold RefineryGoldTurkey
CID002551Jiangwu H.C. Starck Tungsten Products Co., Ltd.TungstenChina
CID002317Jiangxi Xinsheng Tungsten Industry Co., Ltd.TungstenChina
CID000914JiuJiang JinXin Nonferrous Metals Co., Ltd.TantalumChina
CID000917Jiujiang Tanbre Co., Ltd.TantalumChina
CID002506Jiujiang Zhongao Tantalum & Niobium Co., Ltd.TantalumChina
CID003497K.A. RasmussenGoldNorway
CID002539KEMET de MexicoTantalumMexico
CID000966Kennametal FallonTungstenUnited States Of America
CID003463Kundan Care Products Ltd.GoldIndia
CID002762L'Orfebre S.A.GoldAndorra
CID003387Luna Smelter, Ltd.TinRwanda
CID001105Malaysia Smelting Corporation (MSC)TinMalaysia
CID002548Materion Newton Inc.TantalumUnited States Of America
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Smelter IDSmelter NameMetalSmelter Country
CID001149Metalor Technologies (Hong Kong) Ltd.GoldChina
CID001153Metalor Technologies S.A.GoldSwitzerland
CID004065Mining Minerals Resources SARLTinCongo, Democratic Republic Of The
CID001188Mitsubishi Materials CorporationGoldJapan
CID001192Mitsui Mining and Smelting Co., Ltd.TantalumJapan
CID001352MKS PAMP SAGoldSwitzerland
CID002509MMTC-PAMP India Pvt., Ltd.GoldIndia
CID002573Nghe Tinh Non-Ferrous Metals Joint Stock CompanyTinViet Nam
CID001259Nihon Material Co., Ltd.GoldJapan
CID001277Ningxia Orient Tantalum Industry Co., Ltd.TantalumChina
CID001200NPM Silmet ASTantalumEstonia
CID001419PT Bangka Tin IndustryTinIndonesia
CID003324QG Refining, LLCGoldUnited States Of America
CID001512Rand Refinery (Pty) Ltd.GoldSouth Africa
CID002706Resind Industria e Comercio Ltda.TinBrazil
CID002973Safimet S.p.AGoldItaly
CID001555Samduck Precious MetalsGoldKorea, Republic Of
CID001916Shandong Gold Smelting Co., Ltd.GoldChina
CID003383Sovereign MetalsGoldIndia
CID003153State Research Institute Center for Physical Sciences and TechnologyGoldLithuania
CID002567Sudan Gold RefineryGoldSudan
CID002756Super LigasTinBrazil
CID002544TANIOBIS Co., Ltd.TantalumThailand
CID002545TANIOBIS GmbHTantalumGermany
CID002549TANIOBIS Japan Co., Ltd.TantalumJapan
CID002542TANIOBIS Smelting GmbH & Co. KGTungstenGermany
CID002550TANIOBIS Smelting GmbH & Co. KGTantalumGermany
CID001891Telex MetalsTantalumUnited States Of America
CID001898ThaisarcoTinThailand
CID001969Ulba Metallurgical Plant JSCTantalumKazakhstan
CID002003Valcambi S.A.GoldSwitzerland
CID002015VQB Mineral and Trading Group JSCTinViet Nam
CID002036White Solder Metalurgia e Mineracao Ltda.TinBrazil
CID002044Wolfram Bergbau und Hutten AGTungstenAustria
CID002320Xiamen Tungsten (H.C.) Co., Ltd.TungstenChina
CID002082Xiamen Tungsten Co., Ltd.TungstenChina
CID000616XIMEI RESOURCES (GUANGDONG) LIMITEDTantalumChina
CID002129Yokohama Metal Co., Ltd.GoldJapan
CID000197Yunnan Copper Industry Co., Ltd.GoldChina
* During our 2024 due diligence, eleven suppliers initially indicated potential sourcing from CID003185 - African Gold Refinery (“AGR”), a gold smelter operating in a Covered Country. To ascertain the presence of AGR-sourced
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material in our supply chain, Calix promptly requested product-specific CMRTs from all eleven suppliers, utilizing multiple email remainders and direct phone calls to expedite responses. As of the filing date, nine of these suppliers have confirmed that AGR-sourced material was not supplied for integration into Calix’s products in 2024.

One of the remaining two suppliers has confirmed that during at least a portion of 2024, 3TG sourced from AGR was likely integrated into at least one component within some of Calix’s access products. Calix has determined that no further mitigation is required with respect to this upstream supplier, as our manufacturing partner who utilized this supplier has since discontinued its relationship and holds no remaining inventory or open orders. We are currently awaiting a response from the final supplier. In the event this supplier confirms 2024 components included AGR-sourced material, we intend to implement an action plan to remove such material from our supply chain, with an anticipated implementation timeframe of 30 days from confirmation.

Calix maintains a firm commitment to compliance with all applicable sanctions laws. While AGR was listed as an eligible gold refiner in the RMI facility database in 2024, Calix acknowledges its removal from the RMI RMAP Conformant list following the U.S. Department of Treasury’s Office of Foreign Assets Control designation of AGR as a Specially Designated National on March 17, 2022. As a downstream user of 3TG, Calix did not source directly from AGR in 2024, and has not identified any direct transactions or contractual relationships with AGR. To date, only the one supplier identified above has confirmed the use of AGR-sourced material in a Calix product or component. Calix continues to collaborate with its supply base to ensure adherence to all applicable sanctions laws.


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