First Solar 10-Q 2025-06-30

UNITED STATES SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 10-Q

(Mark one)

☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended June 30, 2025

or

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from to

Commission file number: 001-33156

First Solar, Inc.

(Exact name of registrant as specified in its charter)

350 West Washington Street, Suite 600

Tempe, Arizona 85288

(Address of principal executive offices, including zip code)

(602) 414-9300

(Registrant’s telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☒ No ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes ☒ No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐ No ☒

As of July 25, 2025, 107,247,651 shares of the registrant’s common stock, $0.001 par value per share, were outstanding.

FIRST SOLAR, INC.

FORM 10-Q FOR THE QUARTERLY PERIOD ENDED JUNE 30, 2025

TABLE OF CONTENTS

Throughout this Quarterly Report on Form 10-Q, we refer to First Solar, Inc. and its subsidiaries as “First Solar,” “the Company,” “we,” “us,” and “our.” Units of electricity are typically stated in gigawatts (“GW”).

PART I. FINANCIAL INFORMATION

FIRST SOLAR, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(In thousands, except per share amounts)

(Unaudited)

See accompanying notes to these condensed consolidated financial statements.

FIRST SOLAR, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(In thousands)

(Unaudited)

See accompanying notes to these condensed consolidated financial statements.

FIRST SOLAR, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED BALANCE SHEETS

(In thousands, except share data)

(Unaudited)

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Cautionary Statement Regarding Forward-Looking Statements

This Quarterly Report on Form 10-Q contains forward-looking statements within the meaning of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and the Securities Act of 1933, as amended (the “Securities Act”), which are subject to risks, uncertainties, and assumptions that are difficult to predict. All statements in this Quarterly Report on Form 10-Q, other than statements of historical fact, are forward-looking statements. These forward-looking statements are made pursuant to safe harbor provisions of the Private Securities Litigation Reform Act of 1995. The forward-looking statements include statements, among other things, concerning: effects resulting from certain module manufacturing changes; our business strategy, including anticipated trends and developments in and management plans for our business and the markets in which we operate; future financial results, operating results, module volumes produced, module volumes sold, revenues, gross margin, operating expenses, products, projected costs (including estimated future module collection and recycling costs), warranties and anticipated claims thereunder, solar module technology and cost reduction roadmaps, product reliability, investments, and capital expenditures; our ability to continue to reduce the cost per watt of our solar modules; the impact of public policies, such as tariffs, export controls, or other trade remedies; the potential impact of legislation intended to encourage renewable energy investments through tax credits; our ability to expand manufacturing capacity worldwide, including the construction of new manufacturing facilities in the United States and related increases in manufacturing capacity; the impact of supply chain disruptions, which may affect the procurement of raw materials used in our manufacturing process and the distribution of our modules; R&D programs and our ability to improve the wattage of our solar modules; sales and marketing initiatives; our ability to enforce our intellectual property rights; and competition. In some cases, you can identify these statements by forward-looking words, such as “estimate,” “expect,” “anticipate,” “project,” “plan,” “intend,” “seek,” “believe,” “forecast,” “foresee,” “likely,” “may,” “should,” “goal,” “target,” “might,” “will,” “could,” “predict,” “continue,” “contingent,” and the negative or plural of these words, and other comparable terminology.

Forward-looking statements are only predictions based on our current expectations and our projections about future events. All forward-looking statements included in this Quarterly Report on Form 10-Q are based upon information available to us as of the filing date of the report and therefore speak only as of the filing date. You should not place undue reliance on these forward-looking statements. We undertake no obligation to update any of these forward-looking statements for any reason, whether as a result of new information, future developments, or otherwise. These forward-looking statements involve known and unknown risks, uncertainties, and other factors that may cause our actual results, levels of activity, performance, or achievements to differ materially from those expressed or implied by these statements. These factors include, but are not limited to:

• structural imbalances in global supply and demand for PV solar modules;

• our competitive position and other key competitive factors;

• the modification, reduction, elimination, or expiration of government subsidies, economic incentives, tax incentives, renewable energy targets, and other support for on-grid solar electricity applications;

• the impact of public policies, such as tariffs, export controls, or other trade remedies imposed on solar cells and modules or related raw materials or equipment;

• the loss of any of our large customers, or the ability of our customers and counterparties to perform under their contracts with us;

• our ability to attract new customers and to develop and maintain existing customer and supplier relationships;

• interest rate fluctuations and our customers’ ability to secure financing;

• our ability to execute on our long-term strategic plans, including our ability to secure financing and realize the potential benefits of strategic acquisitions and investments;

• our ability to execute on our solar module technology and cost reduction roadmaps;

• claims under our limited warranty obligations;

• our continued investment in R&D;

• our ability to incorporate technology improvements into our manufacturing process, including the implementation of our copper replacement (“CuRe”) program;

• our ability to improve the wattage of our solar modules;

• our ability to construct new production facilities to support new product lines;

• the supply and price of key raw materials (including CdTe, tellurium, and tellurium compounds), components, and manufacturing equipment;

• supply chain disruptions;

• our ability to avoid manufacturing interruptions, including during the ramp of our Series 7 modules manufacturing facilities;

• future collection and recycling costs for solar modules covered by our module collection and recycling program, or otherwise as required by external laws and regulations;

• our ability to protect or successfully commercialize our intellectual property;

• environmental responsibility, including with respect to CdTe and other semiconductor materials;

• changes in, or the failure to comply with, government regulations and environmental, health, and safety requirements;

• evolving corporate governance and public disclosure regulations and expectations, including with respect to environmental, social, and governance matters;

• effects arising from and results of pending litigation;

• general economic and business conditions, including those influenced by U.S., international, and geopolitical events and conflicts;

• our ability to prevent and/or minimize the impact of cybersecurity incidents or information or security breaches;

• the severity and duration of public health threats;

• our ability to attract, train, retain, and successfully integrate key talent into our team; and

• all other matters discussed in Item 1A. “Risk Factors” of our Annual Report on Form 10-K for the year ended December 31, 2024, elsewhere in this Quarterly Report on Form 10-Q, and our other reports filed with the SEC.

You should carefully consider the risks and uncertainties described in this section. The following discussion and analysis of our business, financial condition, and results of operations should be read in conjunction with our condensed consolidated financial statements and the related notes thereto included in this Quarterly Report on Form 10-Q.

Executive Overview

We are America’s leading PV solar technology and manufacturing company. The only U.S.-headquartered company among the world’s largest solar manufacturers, First Solar is focused on competitively and reliably enabling power generation needs with our advanced, thin film PV technology. Developed at R&D labs in California and Ohio, the Company’s technology represents the next generation of solar power generation, providing a competitive, high-performance, and responsibly produced alternative to conventional crystalline silicon PV solar modules. Our PV solar modules are produced using a fully integrated, continuous process that does not rely on Chinese crystalline silicon supply chains.

We are the world’s largest thin film PV solar module manufacturer and the largest PV solar module manufacturer in the Western Hemisphere. We recently commenced operations at our fourth manufacturing facility in the United States, completed the expansion of our manufacturing footprint at our existing facilities in Ohio, and expect to complete construction and commence operations at our fifth manufacturing facility in the United States in the th

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There have been no material changes to the information previously provided under Item 7A. of our Annual Report on Form 10-K for the year ended December 31, 2024.

Evaluation of Disclosure Controls and Procedures

We carried out an evaluation, under the supervision and with the participation of management, including our Chief Executive Officer and Chief Financial Officer, of the effectiveness of our “disclosure controls and procedures” as defined in Exchange Act Rule 13a-15(e) and 15d-15(e). Based on that evaluation, our Chief Executive Officer and Chief Financial Officer concluded that as of June 30, 2025 our disclosure controls and procedures were effective to ensure that information required to be disclosed by us in reports that we file or submit under the Exchange Act is recorded, processed, summarized, and reported within the time periods specified in SEC rules and forms, and that such information is accumulated and communicated to our management, including our Chief Executive Officer and Chief Financial Officer, as appropriate, to allow timely decisions regarding required disclosure.

Changes in Internal Control over Financial Reporting

We also carried out an evaluation, under the supervision and with the participation of management, including our Chief Executive Officer and Chief Financial Officer, of our “internal control over financial reporting” as defined in Exchange Act Rule 13a-15(f) and 15d-15(f) to determine whether any changes in our internal control over financial reporting occurred during the three months ended June 30, 2025 that materially affected, or are reasonably likely to materially affect, our internal control over financial reporting. Based on that evaluation, there were no such changes in our internal control over financial reporting that occurred during the three months ended June 30, 2025.

CEO and CFO Certifications

We have attached as exhibits to this Quarterly Report on Form 10-Q the certifications of our Chief Executive Officer and Chief Financial Officer, which are required in accordance with the Exchange Act. We recommend that this Item 4. be read in conjunction with those certifications for a more complete understanding of the subject matter presented.

Limitations on the Effectiveness of Controls

Control systems, no matter how well designed and operated, can provide only reasonable, not absolute, assurance that the control systems’ objectives are being met. Further, the design of any system of controls must reflect the fact that there are resource constraints, and the benefits of all controls must be considered relative to their costs. Because of the inherent limitations in all control systems, no evaluation of controls can provide absolute assurance that all control issues and instances of fraud, if any, within our company have been detected. These inherent limitations include the realities that judgments in decision-making can be faulty and that breakdowns can occur because of error or mistake. Control systems can also be circumvented by the individual acts of some persons, by collusion of two or more people, or by management override of the controls. The design of any system of controls is also based in part upon certain assumptions about the likelihood of future events, and there can be no assurance that any design will succeed in achieving its stated goals under all potential future conditions. Over time, controls may become inadequate because of changes in conditions or deterioration in the degree of compliance with policies or procedures.

PART II. OTHER INFORMATION

Item 1. Legal Proceedings

On February 25, 2025, First Solar filed suit in the district court for the District of Delaware asserting that JinkoSolar Holding Co., Ltd.; Jinko Solar Co., Ltd.; Jinko Solar (Vietnam) Industries Co. Ltd.; Jinko Solar Technology Sdn. Bhd.; Zhejiang Jinko Solar Co., Ltd.; JinkoSolar (U.S.) Holding Inc.; JinkoSolar (U.S.) Inc.; Jinko Solar (U.S.) Manufacturing Inc.; and Jinko Solar (U.S.) Industries Inc. (collectively, “JinkoSolar”) directly and indirectly infringe a First Solar patent through JinkoSolar’s manufacture, import, use, sale, and offering for sale of certain tunnel oxide passivated contact (“TOPCon”) solar products. First Solar alleges that the JinkoSolar TOPCon products contain solar cells manufactured using a method claimed in the patent. First Solar seeks both monetary damages and injunctive relief. On June 27, 2025, JinkoSolar filed an answer to the complaint and counterclaims asserting that the patent-in-suit is not valid and that it is not infringed by JinkoSolar. On July 18, 2025, First Solar filed an answer to the counterclaims.

On April 15, 2025, Mundra Solar PV Limited (“Mundra”) filed suit in the district court of the District of Delaware seeking declaratory judgment that it does not infringe two of First Solar’s patents through its manufacture, import, use, sale, and offering for sale of certain TOPCon solar products.

On May 9, 2025, First Solar filed suit in the district court for the District of Delaware asserting that Canadian Solar Inc.; CSI Solar Co., Ltd.; Canadian Solar Manufacturing (Thailand) Co., Ltd.; Canadian Solar International Limited; Canadian Solar (USA) Inc.; and Canadian Solar US Module Manufacturing Corporation (collectively, “Canadian Solar”) directly and indirectly infringe a First Solar patent through Canadian Solar’s manufacture, import, use, sale, and offering for sale of certain TOPCon solar products. First Solar alleges that the Canadian Solar TOPCon products contain solar cells manufactured using a method claimed in the patent. First Solar seeks both monetary damages and injunctive relief.

See Note 10. “Commitments and Contingencies” under the heading “Legal Proceedings” of our condensed consolidated financial statements for other legal proceedings and related matters.

In addition to the other information set forth in this report, you should carefully consider the factors discussed in Item 1A. “Risk Factors” of our Annual Report on Form 10-K for the year ended December 31, 2024, which could materially affect our business, financial condition, results of operations, and cash flows. The risks described in our Annual Report on Form 10-K are not the only risks we face. Additional risks and uncertainties not currently known to us or that we currently consider immaterial may also materially adversely affect our business, financial condition, results of operations, and cash flows. Except for the risk factors set forth below, there have been no material changes in the risk factors contained in our Annual Report on Form 10-K.

The modification, reduction, elimination, or expiration of government subsidies, economic incentives, tax incentives, renewable energy targets, and other support for on-grid solar electricity applications, or the impact of other public policies, such as tariffs or other trade remedies imposed on solar cells and modules or related raw materials or equipment, could negatively impact demand and/or price levels for our solar modules and limit our growth or lead to a reduction in our net sales or increase our costs, thereby adversely impacting our operating results.

Although we believe that solar energy will experience widespread adoption in those applications where it competes economically with traditional forms of energy without any incentive programs, in certain markets our net sales and profits remain subject to variability based on the availability and size of government subsidies and economic incentives. Federal, state, and local governmental bodies in many countries have provided subsidies in the form of feed-in-tariff structures, rebates, tax incentives, and other incentives to end users, distributors, system integrators,

and manufacturers of PV solar products. Many of these incentive programs expire, phase down over time, require renewal by the applicable authority, or may be amended. To the extent government incentive programs are reduced earlier than previously expected, are changed retroactively, or are not renewed, such changes have and could negatively impact demand and/or price levels for our solar modules, lead to a reduction in our net sales, and adversely impact our operating results.

Current regulatory policies, or any future changes or threatened changes to such policies, including those changes as a result of the U.S. presidential administration and control of the U.S. Congress, may subject us to significant risks, including the following:

• a reduction or removal of clean energy programs and initiatives and the incentives they provide may diminish the market for future solar energy off-take agreements, slow the retirement of aging fossil fuel plants, including the retirements of coal generation plants, and reduce the ability for solar project developers to compete for off-take agreements, which may reduce PV solar module sales;

• any limitations on the value or availability to manufacturers or potential investors of tax incentives that benefit solar energy production, sales, or projects, such as the Section 45X advanced manufacturing production credit, ITC, and PTC, as seen in the accelerated termination of certain clean energy tax credits under the “One Big Beautiful Bill” the U.S. President signed into law on July 4, 2025, could result in reducing such manufacturers’ or investors’ economic returns and could cause a reduction in the availability of financing, thereby reducing demand for PV solar modules;

• any incentives contingent upon domestic production of modules, such as tax incentives set forth under the IRA, could limit our ability to sell modules manufactured in certain foreign jurisdictions, which may adversely impact our module average selling prices and could require us to record significant charges to earnings should we determine that the manufacturing facilities and equipment in such foreign jurisdictions are impaired; and

• any effort to overturn federal and state laws, regulations, or policies that are supportive of solar energy generation or that remove costs or other limitations on other types of electricity generation that compete with solar energy projects could negatively impact our ability to compete with traditional forms of electricity generation and materially and adversely affect our business.

Application of trade laws may also adversely impact, either directly or indirectly, our operating results; for example, by impacting our customers’ project costs, profitability, and their demand for our modules; or by impacting our own costs or disrupting our manufacturing or supply chains, and consequently negatively impacting demand and/or price levels for our solar modules, reducing our net sales, or affecting potential profitability of fulfilling customer contracts. We are therefore potentially subject to various risks, which include the following:

• any tariffs that reduce the profitability of contracts, whereby the cost of tariffs exceeds the amount able to be, or willing to be, absorbed by either us or the customer under the provisions of the contract and may lead to us or the customer cancelling such contract, potentially resulting in the reduction of future revenue, the loss of the contractual right to a termination payment from the customer, and potentially the required return of a previously received customer down payment;

• any reciprocal or other tariffs may place burdens on our customers’ supply chains exclusive of module import costs, including through increased costs of trackers, inverters, transformers, and other imported equipment, which are often heavily dependent on Chinese supply chains. These and other costs could result in an inability for certain projects to generate profitable returns, and may lead to the delay or abandonment of such projects, thereby reducing or removing demand for currently contracted PV module sales; and

• any reduction in our ability to profitably import modules from our international manufacturing locations as a result of tariffs or other trade laws could lead to us significantly reducing capacity utilization at certain international manufacturing facilities. Such underutilization may lead to potential impairment of certain international equipment and facilities and may also increase our selling costs and reduce our competitiveness in the market, thereby reducing demand for our modules.

In some instances, the application of trade laws is currently beneficial to us, and changes in their application could have an adverse impact. The overall impact of trade laws on our business depends on multiple factors, including their duration, their scope and potential expansion thereof, enforcement, retaliatory measures by impacted exporting countries, inflationary effects and broader macroeconomic responses, changes to consumer purchasing behavior, and the effectiveness of our responses in managing these impacts. Recent developments include the following:

• United States — Reciprocal Tariffs. On April 2, 2025, the U.S. President announced a 10% “baseline” reciprocal tariff on nearly all U.S. trading partners, effective April 5, 2025, and additional, higher reciprocal tariffs on specific countries, effective April 9, 2025. On April 9, 2025, the U.S. President paused the additional, higher tariffs on most countries for 90 days. Effective May 14, 2025, the United States entered into an agreement with China to lower the reciprocal tariff rate to 10% for 90 days (i.e., until August 12, 2025). As of April 16, 2025, the 10% “baseline” reciprocal tariff applies to all countries other than Canada, Mexico, and countries listed under “Column 2” of the Harmonized Tariff Schedule of the United States, such as Russia and North Korea. As it pertains to the countries where we manufacture solar modules, the additional, country-specific tariffs would have applied to Vietnam, India, and Malaysia. On July 2, 2025, the U.S. President announced that the United States and Vietnam had reached a preliminary trade agreement, which purportedly places a 20% tariff on all products of Vietnam and a 40% tariff on all “transshipped” goods. On July 7, 2025, the U.S. President paused the additional, higher tariffs on most countries until August 1, 2025, at which time certain revised, final reciprocal tariffs are expected to be effective. If the additional, higher tariffs on imports from these countries go into effect, it would increase the costs of our solar modules manufactured in these countries with respect to our U.S. market. Further, such circumstances may impact our ability to sell certain modules into the United States and therefore may also impact the operational status of certain of our international manufacturing facilities. As a result, our operating results could be adversely impacted if these tariffs are imposed.

*•*United States — Tariffs on Certain Imported Crystalline Silicon PV Cells and Modules. The United States currently imposes different types of tariffs and/or other trade remedies on certain imported crystalline silicon PV cells and modules from various countries. In February 2022, the previous U.S. President proclaimed a four-year extension of a global safeguard measure imposed pursuant to Section 201 of the Trade Act of 1974 that provides for tariffs on imported crystalline silicon solar modules and a tariff-rate quota on imported crystalline silicon solar cells. Thin film solar cell products, such as our CdTe technology, are specifically excluded from the tariffs. The extension measure’s tariff rate was originally set at 14.75%, with annual reductions of 0.25 percentage points over the remainder of its four-year term. The current rate is 14%. The extension measure also provides an annual tariff-rate quota, whereby tariffs apply to imported crystalline silicon solar cells above the first 5.0 GW of imports. In August 2024, the previous U.S. President increased the tariff-rate quota from 5.0 GW to 12.5 GW.

• United States — Additional Tariffs on Certain Chinese Imports. The United States currently imposes tariffs on various articles imported from China, including tariffs of 50% on crystalline silicon solar cells and tariffs of 25% on modules, based on an investigation under Section 301 of the Trade Act of 1974. In February 2025, the U.S. President announced an additional 10% tariff on all imports from China, which is related to the national security threat posed by China’s trade in fentanyl and other illegal narcotics. This 10% tariff was subsequently doubled to 20% in March 2025 and applies in addition to the 25% tariffs under Section 301 and ordinary customs duties and AD/CVDs. Further, as discussed above, in April 2025, the United States imposed an additional reciprocal tariff on China. Effective May 14, 2025, the United States agreed to lower this additional reciprocal tariff rate to 10% for 90 days (i.e., until August 12, 2025). Our operating results could be adversely impacted if these tariffs were to be terminated or reduced.

• United States — Port Fees on Certain Chinese Vessel Operators and Chinese Vessel Owners. On April 17, 2025, the Office of the U.S. Trade Representative published a notice of final action based on an investigation under Section 301 of the Trade Act of 1974 into China’s targeting of the maritime, logistics, and shipbuilding sectors for dominance. The action imposes new port fees on Chinese vessel operators and/or Chinese vessel owners as well as on non-Chinese operators of Chinese-origin vessels beginning on October 14, 2025. The level of fees is on a sliding scale per net ton or, in the case of non-Chinese operators, the higher of a net ton or container-based fee. Such fees may impact our logistics services and consequently impact our profitability and results of operations.

• United States — Tariffs on Certain Foreign-imported Aluminum and Steel. Effective June 4, 2025, the U.S. President increased tariffs on imported aluminum and steel articles under Section 232 of the Trade Expansion Act of 1962 from 25% to 50%. Such tariffs and policies, or any other U.S. or global trade remedies or other trade barriers, may directly or indirectly affect U.S. or global markets for solar energy and our business, financial condition, and results of operations.

• United States — Potential Tariffs on Processed Critical Minerals and Derivative Products. On April 22, 2025, the U.S. Secretary of Commerce initiated an investigation to determine the effects on the national security of imports of processed critical minerals, as well as their derivative products, under Section 232 of the Trade Expansion Act of 1962; on July 1, 2025, the U.S. Secretary of Commerce initiated an investigation to determine the effects on the national security of imports of polysilicon and its derivatives under the same law. The scope of the investigation includes tellurium and other critical minerals used in solar module manufacturing. In addition, the definition of derivative products covered by the investigation is potentially broad. If this investigation results in the imposition of tariffs or import restrictions on critical minerals and/or derivative products, it could negatively impact demand and/or price levels for our solar modules and limit our growth, lead to a reduction in our net sales, or increase our costs, thereby adversely impacting our operating results.

• United States — Antidumping and Countervailing Duties on Certain Imported Crystalline Silicon PV Cells and Modules. The United States currently imposes AD/CVDs on certain imported crystalline silicon PV cells and modules from China and Taiwan. Such AD/CVDs can change over time pursuant to annual administrative reviews conducted by the USDOC, and a decline in duty rates or USDOC failure to fully enforce U.S. AD/CVD laws could have an adverse impact on our operating results. In August 2023, the USDOC issued final affirmative circumvention rulings, finding that solar modules completed in Cambodia, Malaysia, Thailand, and Vietnam using parts and components produced in China circumvent the pre-existing AD/CVD orders on China. Such duties apply to circumventing imports on or after June 6, 2024, as well as any circumventing imports prior to that date that were not used or installed on or before December 3, 2024. Our operating results could be adversely impacted if the USDOC and other U.S. government agencies do not enforce the affirmative circumvention rulings as expected or if pending litigation challenges result in a modification of the rulings. Conversely, effective enforcement could positively impact our operating results.

• United States — Antidumping and Countervailing Duties on Certain Traded Solar Products. In April 2024, the American Alliance for Solar Manufacturing Trade Committee, which includes First Solar, filed a set of AD/CVD petitions with the USDOC and the USITC to impose duties on certain unfairly traded solar products from Cambodia, Malaysia, Thailand, and Vietnam. On April 21, 2025, the USDOC announced final determinations in the AD/CVD investigations. Final AD/CVD rates ranged from de minimis to over 3,400%, depending on the particular foreign producer. On June 9, 2025, the USITC notified USDOC of its final affirmative determinations in the AD/CVD investigations. AD/CVD orders, including the assessment of AD/CVDs and suspension of liquidation of such products, were issued on June 9, 2025. On July 17, 2025, the Alliance for American Solar Manufacturing and Trade filed another set of AD/CVD petitions with the USDOC and the USITC to impose duties on unfairly traded crystalline silicon solar products from India, Indonesia, and Laos. The USITC is expected to issue its preliminary determination in September 2025. The USDOC is expected to issue its preliminary countervailing duty determinations in December 2025 and preliminary antidumping duty determinations in February 2026.

• India — Domestic and Foreign Imports. The ALMM was introduced in 2021 as a non-tariff barrier to incentivize domestic manufacturing of PV modules by approving the list of models and manufacturers who can participate in certain solar development projects. The ALMM is approved by the MNRE, and any modifications to the ALMM and its application may affect future investments in solar module manufacturing in India. In April 2024, the government of India reimposed the ALMM, thereby requiring solar project developers to procure qualifying modules from companies on the list, which includes our Indian manufacturing facility. Also in April 2024, the ALMM was amended to include specific minimum conversion efficiency thresholds for CdTe solar technologies starting at 18% for solar lighting, 18.5% for rooftop applications, and 19% for utility-scale applications. In December 2024, the ALMM was amended to require nearly all solar development projects to use PV modules that contain domestically manufactured solar cells, which is expected to be effective for such projects completed on or after June 2026. In May 2025, the ALMM was amended to lower the minimum efficiency thresholds for PV modules used in off-grid applications. Our operating results could be adversely impacted if the ALMM requirements are significantly relaxed to allow modules, solar cells, or certain other key module components to be imported from other countries.

• India — Import Duty Tariffs. In April 2022, the Indian government began imposing import duty tariffs of 40% on solar modules and 25% on solar cells. In connection with such April 2022 tariffs, the Indian government also implemented a regulation mandating that any solar project with federal utility, state utility, or commercial and industrial off-takers that interconnects through government owned transmission lines only use solar modules from manufacturers included in the ALMM, and a requirement that all federal procurement of solar modules be only from cells and modules produced domestically. However, in February 2025, the Indian government began imposing import duty tariffs of 20% each on solar modules and cells and levied additional tax on certain commercial agricultural production, which tax included 20% on solar modules and 7.5% on solar cells. Therefore, the aggregate impact on the import of solar modules and cells is 40% and 27.5%, respectively.

These examples show that established markets for PV solar development face uncertainties arising from policy, regulatory, and governmental actions. While the expected potential of the markets we are targeting is significant, policy promulgation and market development are especially vulnerable to governmental inertia, political instability, changing government policy and priorities, the imposition or lowering of trade remedies and other trade barriers, geopolitical risk, fossil fuel subsidization, potentially stringent localization requirements, and limited available infrastructure. Any negative impacts from changes in policy, regulatory, and governmental actions could negatively affect our business, reduce our net sales, profitability and/or market share, and consequently adversely affect our results of operations, prospects, and financial condition.

Our failure to protect or successfully commercialize our intellectual property rights may undermine our competitive position, and litigation to protect our intellectual property rights or defend against third-party allegations of infringement may be costly.

Protection of our proprietary processes, methods, and other technology is critical to our business. Failure to protect and monitor the use of our existing intellectual property rights or to successfully commercialize future intellectual property rights could result in the loss of valuable technologies. We rely primarily on patents, trademarks, trade secrets, copyrights, and contractual restrictions to protect our intellectual property. We regularly file patent applications to protect certain inventions arising from our R&D and are currently pursuing such patent applications in various countries in accordance with our strategy for intellectual property in that jurisdiction. Our existing patents and future patents could be challenged, invalidated, circumvented, or rendered unenforceable. Our pending patent applications may not result in issued patents, or if patents are issued to us, such patents may not be sufficient to provide meaningful protection against competitors or against competitive technologies.

We also rely on unpatented proprietary manufacturing expertise, continuing technological innovation, and other trade secrets to develop and maintain our competitive position. Although we generally enter into confidentiality agreements with our associates and third parties to protect our intellectual property, such confidentiality agreements are limited in duration and could be breached and may not provide meaningful protection for our trade secrets or proprietary manufacturing expertise. Adequate remedies may not be available in the event of unauthorized use or disclosure of our trade secrets and manufacturing expertise. In addition, others may obtain knowledge of our trade secrets through independent development or legal means. The failure of our patents or confidentiality agreements to protect our processes, equipment, technology, trade secrets, and proprietary manufacturing expertise, methods, and compounds could have a material adverse effect on our business. In addition, effective patent, trademark, copyright, and trade secret protection may be unavailable or limited in some foreign countries, especially any developing countries into which we may expand our operations. In some countries, we have not applied for patent, trademark, or copyright protection.

Third parties may infringe or misappropriate our proprietary technologies or other intellectual property rights, which could have a material adverse effect on our business, financial condition, and operating results. Policing unauthorized use of proprietary technology can be difficult and expensive. Additionally, litigation may be necessary to enforce our intellectual property rights, protect our trade secrets, or determine the validity and scope of the proprietary rights of others. For example, on February 25, 2025, we filed a lawsuit in the United States District Court for the District of Delaware against JinkoSolar and its related entities alleging infringement of certain of our U.S. TOPCon patents. On April 15, 2025, Mundra, whose parent corporation is Adani Green Technology Limited, filed a lawsuit in the United States District Court for the District of Delaware seeking a judgment declaring that it has not infringed two of our U.S. TOPCon patents. Further, on May 9, 2025, we filed a lawsuit in the United States District Court for the District of Delaware against Canadian Solar and its related entities alleging infringement of certain of our U.S. TOPCon patents. We cannot ensure that the outcome of such litigation will be in our favor, and such litigation may be costly and may divert management attention and other resources away from our business. An adverse determination in any such litigation may impair our intellectual property rights and may harm our business, prospects, and reputation. In addition, we have no insurance coverage against such litigation costs and would have to bear all costs arising from such litigation to the extent we are unable to recover them from other parties.

We have received and expect to continue to receive certain financial benefits as a result of tax incentives provided by the Inflation Reduction Act of 2022. If these financial benefits vary significantly from our assumptions, our business, financial condition, and results of operations could be adversely affected.

In August 2022, the previous U.S. President signed the IRA into law, which was intended to accelerate the country’s ongoing transition to clean energy. The provisions of the IRA are generally effective for tax years beginning after 2022. We expect to qualify for the advanced manufacturing production credit under Section 45X of the IRC, which provides certain specified benefits for solar modules and solar module components manufactured in the United States and sold to third parties. For eligible components, the credit is equal to (i) $12 per square meter for a PV wafer, (ii) 4 cents multiplied by the capacity of a PV cell in watts, and (iii) 7 cents multiplied by the capacity of a PV module in watts. Based on the current form factor of our modules, we expect to qualify for a credit of approximately 17 cents per watt for each module produced in the United States and sold to a third party.

Such credit may be refundable by the IRS or transferable to a third party and is available from 2023 to 2032, subject to phase down beginning in 2030. For example, in June 2025, December 2024, and December 2023, we entered into various agreements for the sales of Section 45X tax credits generated in 2025, 2024, and 2023, respectively. For further information, see Item 2. “Management’s Discussion and Analysis of Financial Condition and Results of Operations – Liquidity and Capital Resources.” However, there is no assurance that future sales of tax credits will be available to us on similar or alternative terms or at all. In connection with the sale of Section 45X tax credits, we agree to indemnify the purchasers for certain losses they may suffer, including as a result of any inability to claim all or any portion of the Section 45X tax credits sold, subject to certain exceptions and limitations. If we are required to make an indemnification payment to a purchaser of a tax credit it may have a material impact on our results of operations and financial condition. Furthermore, the current U.S. presidential administration and control of the U.S. Congress present uncertainty as to the continued availability of certain benefits. For example, on January 20, 2025, the U.S. President issued the executive order entitled, “Unleashing American Energy,” which, among other things, indicated a lack of support for federal funding of certain solar and solar-related projects. Further, on July 4, 2025, the U.S. President signed H.R.1 into law, commonly referred to as the “One Big Beautiful Bill,” which significantly curtails the availability of clean energy tax credits.

Certain developments to technical guidance and regulations include the following:

• In March 2024, the U.S. Treasury Department and the IRS issued final regulations on the direct payment election under Section 6417 of the IRC. The final regulations apply to tax years ending on or after March 11, 2024, but taxpayers may choose to apply the rules in the final regulations in taxable years ending before March 11, 2024, provided the final regulations are applied in their entirety and in a consistent manner. The final regulations mostly adopted and confirmed the proposed regulations previously issued in June 2023.

• In April 2024, the U.S. Treasury Department and the IRS issued final regulations on the elective transfer provisions under Section 6418 of the IRC. The final regulations apply to taxable years ending on or after April 30, 2024, but taxpayers may choose to apply the rules in the final regulations in taxable years ending before April 30, 2024, provided the final regulations are applied in their entirety and in a consistent manner. The final regulations mostly adopted and confirmed the proposed regulations previously issued in June 2023.

• In October 2024, the U.S. Treasury Department and the IRS issued final regulations on the Section 45X credit confirming key aspects of the credit, including (i) that a vertically-integrated solar module manufacturer is entitled to the sum of the credit amounts for each eligible component that is integrated into the solar module, (ii) the determination of the credit amounts based on standard test conditions, and (iii) the definition of a Section 45X manufacturing facility.

Any modifications to the law or its effects arising, for example, through (i) technical guidance and regulations from the IRS and U.S. Treasury Department, including the certain aspects disclosed above, (ii) subsequent amendments to or interpretations of the law by the IRS, the U.S. Treasury Department, or the courts, (iii) future laws or regulations rendering certain provisions of the IRA less effective or ineffective, in whole or in part, and/or (iv) changes to U.S. government priorities, policies, and/or initiatives as a result of the current U.S. presidential administration and control of the U.S. Congress, could result in changes to the expected and/or actual benefits in the future, which could have a material adverse effect on demand and/or price levels for our solar modules, our net sales, and future expansion plans within the United States, and/or otherwise adversely impact our business, financial condition, and results of operations.

From time to time, our directors and officers may adopt plans for the purchase or sale of our securities. Such plans may be designed to satisfy the affirmative defense conditions of Rule 10b5-1 under the Exchange Act or may constitute non-Rule 10b5-1 trading arrangements (as defined in Item 408(c) of Regulation S-K). During the three months ended June 30, 2025, none of our officers or directors terminated Rule 10b5-1 trading arrangements or adopted or terminated non-Rule 10b5-1 trading arrangements. However, certain of our officers adopted Rule 10b5-1 trading plans for the sale of our securities. The following table provides certain terms of such plans:

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(1)Represents the gross number of shares subject to the Rule 10b5-1(c) plan, excluding the potential effect of shares withheld for taxes. Amounts related to performance units are presented at their target amounts. The actual number of performance units that vest following the end of the applicable performance period, if any, will depend on the relative attainment of the performance metrics.

The following exhibits are filed with this Quarterly Report on Form 10-Q:

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• Filed herewith.

+ Certain portions of this exhibit have been redacted pursuant to Item 601(b)(10)(iv) of Regulation S-K. We have agreed to furnish supplementally an unredacted copy of the exhibit to the SEC upon its request.

† Furnished herewith. This exhibit shall not be deemed “filed” for purposes of Section 18 of the Exchange Act or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act or the Exchange Act, whether made before or after the date hereof and irrespective of any general incorporation language in such filings.

SIGNATURE

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.