X0306 4 2022-10-25 0 0001676479 CapStar Financial Holdings, Inc. CSTR 0001520647 Fowler Michael J 1201 DEMONBREUN ST SUITE 700 NASHVILLE TN 37203 0 1 0 0 Chief Financial Officer Common Stock 2022-10-25 4 A 0 4000 15.97 A 4000 D Common Stock 822 D The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $15.90 to $16.05. 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 purchased at each separate price within the ranges set forth in this footnote. 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. /s/ Michael J. Fowler 2022-10-28