X0306 4 2018-02-27 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 2018-02-27 4 F 0 3818 19.65 D 12838 D Common Stock 2018-03-02 4 F 0 492 17.92 D 12346 D Common Stock 15000 D Common Stock 1656 D Common Stock 1978 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 February 27, 2018 to cover tax withholding obligations in connection with the vesting of 15,000 shares granted pursuant to an award of restricted stock on February 27, 2015. The reported item represents the number of shares withheld by the issuer on March 2, 2018 to cover tax withholding obligations in connection with the vesting of 1,656 shares granted pursuant to an award of restricted stock on March 2, 2016. Following the reported transactions in this Form 4, the reporting person directly owns 12,346 shares of common stock not subject to restriction or vesting. The reported item represents an award of restricted common stock which vests in three equal installments beginning on the first anniversary of the December 19, 2017 grant date. The reported item represents the unvested portion of an award of restricted stock granted on March 2, 2016. The remaining 1,656 shares of restricted common stock under this award vest on the third anniversary of the grant date, or March 2, 2019. The reported item includes the unvested portion of an award of 100 shares of restricted stock granted on September 1, 2016. As of the date of this report, 33 shares have vested. The remaining shares of restricted common stock under this award vest on the second and third anniversaries of the grant date, or September 1, 2018 and September 1, 2019, respectively. These options vested in four equal annual installments beginning on the first anniversary of the December 10, 2012 grant date. These options vest in four equal annual installments beginning on the first anniversary of the February 27, 2015 grant date. As of the date of this report, 22,500 options have vested. The remaining 7,500 options vest on the fourth anniversary of the grant date, or February 27, 2019. Chief Financial Officer and Chief Administrative Officer /s/ Robert B. Anderson 2018-08-24