FTC Solar, Inc. Debt Disclosure

Note 14. Debt

Acquisition notes

As described further in Note 3, "Acquisition and disposition" above, as consideration for the transactions under the Membership Interest Purchase Agreement, we agreed to pay Post Closing Payments totaling approximately $2.7 million to the Selling Members of Alpha Steel in varying installments within five business days following each of January 1, 2026, April 1, 2026 and July 1, 2026. These payments are secured by Acquisition Notes bearing interest on any unpaid balance at a rate of 3.64% per annum, maturing no later than five business days after July 1, 2026. The short-term Acquisition Notes, as reflected above, have been discounted using a market-participant discount rate resulting in an effective interest rate of approximately 12% until maturity.

Credit agreement and warrant issuance

On the Credit Agreement Closing Date, we entered into the Original Credit Agreement with the Lenders, and Acquiom Agency Services LLC, as administrative agent for the Lenders. On November 11, 2025, we entered into the First Amendment to Credit Agreement to amend certain of the financial covenants applicable to us and in connection with our agreement to acquire 100% of the membership interests of Alpha Steel.

On March 23, 2026, we entered into the Second Amendment pursuant to which: (i) the Lenders provided a waiver relating to our breach of the purchase order covenant for the fiscal quarter ended December 31, 2025; (ii) the Lenders agreed that a purchase order covenant will not apply to us until the fiscal quarter ending March 31, 2027; and (iii) we and the Lenders agreed to further amend the financial covenants under the Credit Agreement. Additionally, pursuant to the Second Amendment, we agreed to repay a portion of the principal amount of the loans outstanding under the Credit Agreement as follows: (x) on the date of the Second Amendment, we repaid $2.5 million of principal and; (y) we are required to repay an additional $2.5 million of principal on May 22, 2026; and (z) $5.0 million of principal on September 30, 2026.

The Credit Agreement provides for a senior secured term facility of up to $75 million, consisting of (i) Initial Term Loans and First Delayed Draw Term Loans (both as defined in the Credit Agreement) that were funded during 2025 in an aggregate principal amount of $37.5 million, and (ii) up to $37.5 million principal amount of Second Delayed Draw Term Loans (as defined in the Credit Agreement) that may be requested by the Company and approved by the Lenders in their sole discretion (collectively, with the Initial Term Loans and the First Delayed Draw Term Loans, the "Term Loans"). The Term Loans currently outstanding mature on July 2, 2029.

The funding of the First Delayed Draw Term Loans occurred following the approval by the Company's stockholders on September 4, 2025, in accordance with Nasdaq Listing Rule 5635(d), of the issuance of an aggregate 6,836,237 shares of our common stock issuable upon exercise of certain warrants (the "New Warrants") granted to the Lenders on the Credit Agreement Closing Date, in excess of certain caps that were applicable to the exercise of New Warrants in the absence of such Company stockholder approval. The New Warrants are (i) exercisable at any time through July 2, 2035, at an exercise price of $0.01 per share, (ii) accounted for as a long-term liability, based on terms that could require cash settlement upon the occurrence of a contingent change in control event, and (iii) were valued at approximately $32.1 million in aggregate on the grant date.

In the event of a change of control of the Company, a holder of the New Warrants may, at its option, elect to exercise its New Warrants or exercise a repurchase option that requires the Company to repurchase its New Warrants upon the consummation of the change of control for a cash amount equal to the Black Scholes Value (as defined in the New Warrants). Additionally, the New Warrants provide each holder with a pro rata purchase right (based on the total number of shares of common stock held by a holder and the number of shares issuable upon exercise of the New Warrants) in the event the Company issues any equity securities, convertible securities or rights, options or warrants to purchase equity securities, subject to customary exceptions and conditions. The New Warrants include other customary terms and provisions, including adjustment provisions relating to stock splits, stock dividends, reclassifications and other recapitalization events.

The Company is utilizing the proceeds from the Credit Agreement for balance sheet support, growth acceleration and general corporate purposes.

Key terms

The Term Loans bear interest at 12.00% per annum. A portion of the interest equal to 7.00% per annum is being capitalized and added as paid-in-kind interest and will increase the outstanding principal amount of the Term Loans. The remainder of the interest will be paid in cash at the end of each fiscal quarter. Upon the occurrence and during the continuation of certain events of default under the Credit Agreement ("Events of Default") or upon the election of certain required Lenders during the occurrence and continuation of any Event of Default, the interest rate applicable to the Term Loans will be increased by a 7.00% default interest rate, which would be capitalized and added to the principal amount of the debt.

In addition to the required prepayments of the ECF Repayment Amounts summarized above, the Credit Agreement also provides for the mandatory prepayment of the indebtedness and other obligations outstanding under the Credit Agreement and other applicable loan documents upon the occurrence of certain events (including in connection with a change in control of the Company) and upon acceleration following an Event of Default (an "Exit Fee Event"). If an Exit Fee Event occurs, the Company shall pay an exit fee (the "Exit Fee") equal to (x) the aggregate amount of all Term Loans extended by the Lenders under the Credit Agreement, multiplied by (y) the Exit Fee

Percentage, minus (z) the amount of interest paid in cash by the Company prior to the Exit Fee Event, where the "Exit Fee Percentage" equals 25% in connection with a change of control transaction, or otherwise equals 50%

The Credit Agreement includes customary repayment and prepayment terms, affirmative and negative covenants and representations and warranties, including restrictions on payment of dividends and other covenants.

The Company and certain of its subsidiaries from time-to-time party thereto guarantee the obligations under the Credit Agreement and other Loan Documents. In addition, such obligations are secured by a first priority lien on substantially all tangible and intangible property of the Company and the guarantors and pledges of the equity of certain Company subsidiaries, in each case subject to certain exceptions, limitations and exclusions for the collateral.

Financial covenants

As amended by the Second Amendment, the Credit Agreement includes the following covenants.

Additionally, commencing with the fiscal quarter ending March 31, 2026, the Company’s direct tracker margin must exceed certain thresholds for each fiscal quarter, and the financial covenants include a requirement that the amounts due to the Company under new purchase orders must meet certain thresholds beginning with the fiscal quarter ending March 31, 2027.

At December 31, 2025, the Company was in compliance with all the financial covenants under the Credit Agreement, other than the purchase order covenant for which the Lenders provided a limited waiver pursuant to the Second Amendment.

Debt and warrant issue costs

The Company incurred approximately $1.5 million of costs associated with the issuance of the Term Loans, including lender original issue discount and third-party fees, which are being amortized as additional interest expense over the life of the debt, and approximately $0.2 million of third-party costs were incurred associated with the issuance of the Warrants, which were expensed as incurred.

Previously existing debt and warrants

On December 4, 2024, we entered into a Securities Purchase Agreement (the “Purchase Agreement”) with an institutional investor as the purchaser under the Purchase Agreement (the “Investor”). Pursuant to the Purchase Agreement, we sold, and the Investor purchased, $15.0 million in principal amount of senior secured promissory notes (the “Senior Notes”) and warrants exercisable for 1,750,000 shares of our common stock (the “ Original Warrants”) (the “Offering”). A member of our Board of Directors, Pablo Barahona, invested $500,000 in the Investor, which was used to finance a portion of the purchase price of the Offering.

Pursuant to the terms of the Senior Notes, we elected to increase the outstanding principal amount of the Senior Notes by an amount of interest at a rate of 13% per annum ("paid-in-kind" interest) capitalized semiannually on the

final business day in June and December of each year. As a result, our outstanding principal balance of the Senior Notes was approximately $16.1 million as of July 2, 2025. The Senior Notes were initially secured by substantially all of our assets.

The Original Warrants issued in the Offering were exercised on June 30, 2025 at an exercise price of $0.10 per share, in return for the issuance of 1,750,000 shares of our common stock. We had previously determined liability classification for the Original Warrants was required based on terms that could require cash settlement upon the occurrence of a contingent change in control event. As a result, the Original Warrants were revalued to current fair value at the date of exercise with the offsetting amount reported in our Consolidated Statements of Comprehensive Loss.

Amendment to the Purchase Agreement and Senior Notes

In connection with the Credit Agreement, the Investor entered into a Subordination Agreement, dated July 2, 2025 (the “Subordination Agreement”). Pursuant to the Subordination Agreement, the Investor agreed to the subordination of all indebtedness owed by the Company to the Investor, including under the Senior Notes issued by the Company to the Investor on December 4, 2024, to the indebtedness and obligations owed under the Credit Agreement and the other applicable loan documents.

Also, in connection with the Credit Agreement and the Subordination Agreement, the Company and Investor entered into an Amended and Restated Promissory Note, dated July 2, 2025 (the “A&R Promissory Note”). The A&R Promissory Note amends and restates the original Senior Notes to remove the seniority terms of those notes, conform the original Senior Notes to the terms of the Credit Agreement and the Subordination Agreement, amend certain prepayment and make-whole terms under the original Senior Notes, delete certain covenants and event of default terms, reduce the interest rate under the original Senior Notes to 5% per annum paid in cash and 7% per annum paid in kind, both on the final business day of June and December in each year, and to delete the financial covenants set forth in the original Senior Notes. As a result of an amendment to the Purchase Agreement entered into on July 2, 2025 (the "Purchase Agreement Amendment"), among other things, the Investor agreed to release all liens and guarantees securing the obligations under the Senior Notes, the Purchase Agreement, and the A&R Promissory Note. The A&R Promissory Note also (i) provides for additional interest to be capitalized and added to the principal amount of the debt at a rate of 5% per annum upon the occurrence and continuation of certain events of default and (ii) matures on January 2, 2030.

Interest

Total interest expense recognized during the years ended December 31, 2025 and 2024, was $8.2 million and $0.7 million, respectively. The effective interest rate for our long-term debt, including amortization of the discount and deferred loan costs, is approximately 29%.