FTC Solar, Inc.

Evaluation of disclosure controls and procedures

Our management, with the participation of our Chief Executive Officer and our Chief Financial Officer, evaluated the effectiveness of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934 (the "Exchange Act") as of the end of the period covered by this Quarterly Report. As allowed, management excluded from its assessment of disclosure controls and procedures and internal control over financial reporting the operations of Alpha Steel, which we obtained control of effective November 12, 2025. Based on our evaluation, our Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures were not effective as of June 30, 2026, solely because of the material weakness described below.

In designing and evaluating our disclosure controls and procedures, our management recognizes that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving the desired control objectives. Disclosure controls and procedures include, without limitation, controls and procedures designed to ensure that information required to be disclosed by a company in the reports that it files or submits under the Exchange Act is accumulated and communicated to the company’s management, including its principal executive and principal financial officers, or persons performing similar functions, as appropriate to allow timely decisions regarding required disclosure.

Identification of material weakness

Our process for determining revenue to be recognized over time involves multiple spreadsheets and inputs from various parties and sources. While this process is robust, it does require manual coordination and from time to time we identify isolated errors that are not material to our consolidated results. We promptly take action to correct such errors, as necessary, prior to including in our publicly reported financial results. These issues have not reflected a systemic concern with our revenue recognition methodology; rather they have arisen from a discrete fact pattern on a specific project. For example, we found during 2025 that (i) certain spreadsheets had not been updated with the most current cost information available in our general ledger relating to a particular project, (ii) a specific entry was recorded to an incorrect project in one case, and (iii) intercompany margin eliminations associated with Alpha Steel were not applied timely on certain projects. These errors had no material impact on the reported financial results included in this Quarterly Report.

Due to the significance of our accounting for revenue, we have concluded that the control deficiencies noted constitute a material weakness in our controls related to the recognition of revenue. As a result, we are actively implementing enhancements to our internal accounting processes and management review controls to strengthen our ability to prevent and detect such errors on a more timely basis in the future. We are also evaluating opportunities to increase automation within the revenue process and reduce manual effort and improve overall control effectiveness.

Changes in internal control over financial reporting

There were no changes in our internal control over financial reporting that occurred during the three months ended June 30, 2026, apart from the transition from our former CEO to our new CEO in April 2026, that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

PART II - OTHER INFORMATION