FTC Solar, Inc. New Standards Disclosure

Recent accounting and regulatory pronouncements not yet adopted

In December 2023, the Financial Accounting Standards Board ("FASB") issued ASU No. 2023-09 - Income Taxes (Topic 740): Improvements to Income Tax Disclosures ("ASU 2023-09"). ASU 2023-09 requires companies to disclose (i) additional categories of information about federal, state and foreign income taxes above a quantitative threshold in their rate reconciliation table and (ii) income taxes paid, net of refunds, disaggregated by federal, state and foreign taxes for annual periods, as well as other disclosure changes. As an emerging growth company, we are not required to adopt ASU 2023-09 prior to 2026. We are currently evaluating the impact of ASU 2023-09 on our existing income tax disclosures.

In November 2024, the FASB issued ASU 2024-03 - Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures (Subtopic 220-04) ("ASU 2024-03"). ASU 2024-03 requires companies to disclose additional specific information including, among other things, (a) purchases of inventory, (b) employee compensation, (c) depreciation, and (d) intangible asset amortization included in each of its expense captions disclosed on the face of its results of operations statement, as well as total selling expenses. As clarified in ASU 2025-01, we are currently required to adopt ASU 2024-03 for our annual reporting effective December 31, 2027 and in our quarterly reporting beginning in 2028.

In May 2025, the FASB issued ASU 2025-04, Compensation - Stock Compensation (Topic 718) and Revenue from Contracts with Customers (Topic 606). This new guidance applies to all entities that issue share-based consideration to a customer that is within the scope of Topic 606. The guidance revises the definition of a performance

condition to include conditions based on a customer's purchases and eliminates the policy election allowing grantors to account for forfeitures of customer awards as they occur. It also clarifies that the guidance on constraining estimates of variable consideration does not apply to share-based consideration payable to a customer. We are currently required to adopt this new standard on either a modified retrospective or a retrospective basis beginning in the first quarter of 2027. We are evaluating the impact, if any, on the Company upon adoption and have made no determination at this time regarding the method of adoption to be used.

In July 2025, the FASB issued ASU 2025-05, Financial Instruments - Credit Losses (Topic 326) ("ASU 2025-05"). This new guidance provides companies with a practical expedient to assume that current conditions as of the balance sheet date will persist through a reasonable and supportable forecast period when adjusting historical data to be used in the estimation of credit losses. We currently anticipate adopting ASU 2025-05 on a prospective basis beginning in 2026.

In December 2025, the FASB issued ASU 2025-10, Government Grants (Topic 832) ("ASU 2025-10"). This new guidance establishes the accounting for a government grant received by a business entity, including guidance for (i) a grant related to an asset and (ii) a grant related to income. The standard is effective for public business entities for annual reporting periods beginning after December 15, 2028 and, for other than public business entities, for annual reporting periods beginning after December 15, 2029. We are currently evaluating this standard in relation to our current accounting treatment of 45X Credits described above and are assessing the available transition methods for adopting this new standard.

Other standards that have been issued but not yet adopted as of December 31, 2025, are either not applicable to us or are not expected to have any material impact upon adoption.