X0206 3 2021-07-13 0 0001234006 GLADSTONE COMMERCIAL CORP GOOD 0001873961 Cooper Arthur S. 1521 WESTBRANCH DRIVE SUITE 100 MCLEAN VA 22102 0 1 0 0 Chief Investment Officer Common Stock 17509 I by Arthur S. Cooper Revocable Trust Common Stock 1500 I by Joanne Coffin Cooper Mountain Home Trust Common Stock 2223 I by Spouse Mr. Cooper disclaims beneficial ownership of all of the shares held by his spouse and this report shall not be deemed an admission that Mr. Cooper is the beneficial owner of the securities for purposes of Section 16 or any other purpose. Michael LiCalsi, attorney-in-fact 2021-07-22