X0609 4 2026-05-06 0001828161 FTC Solar, Inc. FTCI 0001183962 ALVAREZ ANTONIO R false 10900 STONELAKE BLVD. SUITE 100 QUARRY OAKS II BUILDING AUSTIN TX 78759 true false false false false Common Stock 2026-05-06 4 P false 2500 3.98 A 48783 D Represents a weighted average purchase price per share for these shares, which were purchased in multiple transactions at prices ranging from $3.980 to $3.990. The Reporting Person undertakes to provide to the Issuer, 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/ Cathy Behnen, as Attorney-in-Fact 2026-05-07