X0306 4 2022-01-15 0 0001676479 CapStar Financial Holdings, Inc. CSTR 0001660219 SCHOOLS TIMOTHY KYLE 1201 DEMONBREUN ST SUITE 700 NASHVILLE TN 37203 1 1 0 0 Chief Executive Officer Common Stock 2022-01-27 4 A 0 3923 0.00 A 3923 D Common Stock 2022-01-15 4 F 0 2113 21.29 D 40336 D Common Stock 3151 D Employees Stock Option (right to buy) 14.835 2029-05-22 Common Stock 50000 50000 D The reported item represents an award of restricted stock which vests in three approximately equal installments beginning on the first anniversary of the January 27, 2022 grant date. The reported item represents the number of shares withheld by the issuer on January 15, 2022 and January 17, 2022 to cover tax withholding obligations in connection with the vestings of 5,167 and 2,010 shares granted pursuant to awards of restricted stock on December 31, 2021 and January 15, 2019, respectively. This is an inadvertent late filing due to an administrative error. The reported item represents an award of restricted stock which vests in two equal installments beginning on the first anniversary of the December 31, 2020 grant date. As of the date of this report, 3,151 shares have vested. The remaining 3,151 shares of restricted common stock under this award vest on the second anniversary of the grant date, or December 31, 2022. The reported item represents options which vest in three approximately equal annual installments beginning on the first anniversary of the May 22, 2019 grant date. /s/ Denis J. Duncan, as Attorney-in-Fact for Timothy K. Schools 2022-01-31