X0508 4 2023-09-14 0 0001828161 FTC Solar, Inc. FTCI 0001921678 Morris Robert Phelps C/O FTC SOLAR, INC. 9020 N CAPITAL OF TEXAS HWY, SUITE I-260 AUSTIN TX 78759 0 1 0 0 Chief Financial Officer 0 Common Stock 2023-09-14 4 P 0 72000 1.40 A 508709 D Represents a weighted average purchase price per share for these shares, which were purchased in multiple transactions at prices ranging from $1.37 to $1.44. The Reporting Person has provided to the Issuer, and undertakes to provide to the staff of the Commission or any security holder of the Issuer, upon request, full information regarding the number of shares purchased at each separate price within the range. /s/ Jacob D. Wolf, as Attorney-in-Fact 2023-09-18