X0306 4 2022-09-23 0001201792 AMERICAN PUBLIC EDUCATION INC APEI 0001789284 Selden Angela K. 111 WEST CONGRESS STREET CHARLES TOWN WV 25414 1 1 0 0 President and CEO Common Stock, par value $.01 2022-09-23 4 F 0 6909 9.42 D 211153 D The issuer withheld shares of Common Stock from the reporting person to pay the tax withholding obligations related to the vesting of Restricted Stock Units held by the reporting person. /s/ Richard W. Sunderland, Jr., Attorney-in-Fact 2022-09-26