X0306 4 2022-09-26 0 0001828161 FTC Solar, Inc. FTCI 0001684056 Springer David C/O FTC SOLAR INC. 9020 N CAPITAL OF TEXAS HWY, SUITE I-260 AUSTIN TX 78759 1 0 1 0 Common Stock 2022-09-26 4 S 0 62370 3.18 D 6475418 D Common Stock 2022-09-26 4 S 0 2310 3.18 D 347690 I By Trust Common Stock 2022-09-26 4 S 0 2310 3.18 D 347690 I By Trust Common Stock 2022-09-26 4 S 0 2310 3.18 D 347690 I By Trust Common Stock 2022-09-27 4 S 0 62306 3.17 D 6413112 D Common Stock 2022-09-27 4 S 0 2307 3.17 D 345383 I By Trust Common Stock 2022-09-27 4 S 0 2307 3.17 D 345383 I By Trust Common Stock 2022-09-27 4 S 0 2308 3.17 D 345382 I By Trust Common Stock 1168501 I By Trust Common Stock 1200000 I By Trust Common Stock 329866 I By Trust Reflects a sale pursuant to a Rule 10b5-1 trading plan adopted by the owner of the shares. Represents a weighted average sales price per share for these shares, which were sold in multiple transactions at prices ranging from $3.06 to $3.35. 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 sold at each separate price within the range. Reflects shares contributed by the DS 2021 GRAT to the Reporting Person, which was exempt from reporting pursuant to Rule 16a-13 under the Securities Exchange Act of 1934, as amended. These shares are owned directly by the ZS 2021 Trust for the benefit of the Reporting Person's child. The Reporting Person has sole power to acquire for himself any asset held in the trust, including the shares, by substituting other property of equivalent value of the ZS 2021 Trust. 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. These shares are owned directly by the NS 2021 Trust for the benefit of the Reporting Person's child. The Reporting Person has sole power to acquire for himself any asset held in the trust, including the shares, by substituting other property of equivalent value of the NS 2021 Trust. 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. These shares are owned directly by the AS 2021 Trust for the benefit of the Reporting Person's child. The Reporting Person has sole power to acquire for himself any asset held in the trust, including the shares, by substituting other property of equivalent value of the AS 2021 Trust. 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. Represents a weighted average sales price per share for these shares, which were sold in multiple transactions at prices ranging from $3.06 to $3.345. 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 sold at each separate price within the range. These shares are owned directly by the DS 2021 GRAT for the benefit of the Reporting Person. The Reporting Person (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 of the DS 2021 GRAT. 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. These shares are owned directly by the DS 2022 GRAT for the benefit of the Reporting Person. The Reporting Person (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 of the DS 2022 GRAT. 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. These shares are owned directly by the KC 2021 Trust for the benefit of the Reporting Person's fiancee. 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. The Reporting Person previously reported shares owned directly by the JT 2021 Trust and SF 2021 Trust. The Reporting Person no longer has any substitution power or other right to acquire securities held by such trusts, and therefore, no longer has a reportable beneficial interest in the shares held by them. /s/ Jacob D. Wolf, as Attorney-in-Fact 2022-09-28