X0609 4 2026-04-01 0 0001709442 FIRSTSUN CAPITAL BANCORP FSUN 0001454988 SHAFER THOMAS C false 1400 16TH STREET SUITE 250 DENVER CO 80202 1 0 0 0 0 Common Stock, $0.0001 par value 2026-04-01 4 A 0 80415 A 80415 D Common Stock, $0.0001 par value 7105 I Thomas C. Shafer Revocable Living Trust Received in exchange for 500,000 unvested restricted stock units ("RSUs") of First Foundation Inc. ("First Foundation") that were assumed by FirstSun Capital Bancorp ("FirstSun") and replaced with RSUs of FirstSun, in connection with the merger of First Foundation with and into FirstSun. Each unvested RSU of First Foundation was converted into an RSU of FirstSun with respect to FirstSun common stock, based on the exchange ratio in the merger of 0.16083 of a share of FirstSun common stock for each share of First Foundation common stock. /s/ Kelly C. Rackley, by power of attorney 2026-04-02