X0306 4 2022-08-02 0 0001676479 CapStar Financial Holdings, Inc. CSTR 0001916023 Moody Jeffrey L 1201 DEMONBREUN STREET, SUITE 700 NASHVILLE TN 37203 0 1 0 0 Principal Accounting Officer Common Stock 2022-08-02 4 F 0 118 20.82 D 382 D Common Stock 2022-08-02 4 S 0 382 21.02 D 0 D The reported item represents the number of shares withheld by the issuer on August 2, 2022 to cover tax withholding obligations in connection with the vesting of 500 shares granted pursuant to awards of restricted stock on July 22, 2019. The sales reported in this Form 4 were sold in a single transaction at $21.02 per share. The reporting person undertakes to provide to CapStar Financial Holdings, Inc., any security holder of CapStar Financial Holdings, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold in each transaction being reported on this Form 4. /s/ Jeffrey L. Moody 2022-08-04