X0306 4 2019-12-19 0 0001676479 CapStar Financial Holdings, Inc. CSTR 0001685230 Anderson Robert B. 1201 DEMONBREUN STREET, SUITE 700 NASHVILLE TN 37203 0 1 0 0 See Remarks Common Stock 2019-12-19 4 F 0 2118 17.16 D 27840 D Common Stock 2734 D Common Stock 5000 D Options (right to buy) 12.27 2022-12-20 Common Stock 50000 50000 D Options (right to buy) 11.41 2025-02-27 Common Stock 30000 30000 D The reported item represents the number of shares withheld by the issuer on December 19, 2019 to cover tax withholding obligations in connection with the vesting of 5,000 shares granted pursuant to an award of restricted stock on December 19, 2017. The reported item represents an award of restricted stock which vests in three equal installments beginning on the first anniversary of the January 23, 2019 grant date. The reported item represents the unvested portion of an award of restricted stock granted on December 19, 2017. The remaining 5,000 shares of restricted stock under this award vest on the third anniversary of the grant date, or December 19, 2020. The reported item represents options which vest in four equal annual installments beginning on the first anniversary of the December 10, 2012 grant date. The reported item represents options which vest in four equal annual installments beginning on the first anniversary of the February 27, 2015 grant date. Chief Financial Officer and Chief Administrative Officer /s/ Robert B. Anderson 2019-12-19