SCHEDULE 13G/A 0001684056 XXXXXXXX LIVE 4 Common Stock, $0.0001 par value 12/31/2025 0001828161 FTC Solar, Inc. 30320C103 10900 Stonelake Blvd, Suite 100 Quarry Oaks II Building Austin TX 78759 Rule 13d-1(d) David Springer X1 830158 0 830158 0 830158 N 5.3 IN FTC Solar, Inc. 10900 Stonelake Blvd, Suite 100, Quarry Oaks II Building, Austin, TX 78759 David Springer 10900 Stonelake Blvd, Suite 100, Quarry Oaks II Building, Austin, TX 78759 USA Y 830,158 5.3% 830,158 0 830,158 0 Y N Consists of (i) 680,177 shares of common stock held by Mr. Springer, (ii) 33,615 shares of common stock held by the ZS 2021 Trust, (iii) 33,615 shares of common stock held by the NS 2021 Trust, (iv) 33,615 shares of common stock held by the AS 2021 Trust and (v) [49,136] shares of common stock held by the DS 2022 GRAT. With respect to the DS 2022 GRAT, Mr. Springer (a) is the sole trustee, (b) has sole voting and dispositive power with respect to the shares held by the trust and (c) has sole power to acquire for himself any asset held in the trust, including the shares, by substituting other property of equivalent value. With respect to the ZS 2021 Trust, the NS 2021 Trust, and the AS 2021 Trust, Mr. Springer has sole power to acquire for himself any asset held in the trust, including the shares, by substituting other property of equivalent value. Y Y Y Y David Springer /s/ David Springer 02/13/2026