X0609 4 2026-05-06 0001828161 FTC Solar, Inc. FTCI 0001233432 SADASIVAM SHAKER 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 27025 3.70 A 81508 D Common Stock 301710 I By limited liability company Represents a weighted average purchase price per share for these shares, which were purchased in multiple transactions at prices ranging from $3.680 to $3.700. 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. The Reporting Person is the Manager of ChristSivam, LLC and has sole voting and dispositive power with respect to the shares held by ChristSivam, LLC. The Reporting Person disclaims beneficial ownership of these securities, except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that he is the beneficial owner of such securities for Section 16 or any other purpose. /s/ Cathy Behnen, as Attorney-in-Fact 2026-05-07