X0508 4 2026-03-10 0001201792 AMERICAN PUBLIC EDUCATION INC APEI 0002005437 Gaffney Karmela 111 WEST CONGRESS STREET CHARLES TOWN WV 25414 0 1 0 0 SVP, Chief Marketing Officer 0 Common Stock, par value $.01 2026-03-10 4 A 0 14425 0 A 44696 D Common Stock, par value $.01 2026-03-10 4 F 0 1469 45.51 D 43227 D Performance-based restricted stock unit ("PSU") award pursuant to the American Public Education, Inc. 2017 Omnibus Incentive Plan, as amended. Award reflects a level of achievement of adjusted earnings per share and revenue performance measures for the issuer's fiscal year ended December 31, 2025. Award vests in three approximately equal installments on March 10, 2026, February 4, 2027, and February 4, 2028. The issuer withheld shares of Common Stock from the reporting person to pay the tax withholding obligations related to the vesting of PSUs. /s/ Edward Codispoti, Attorney-in-Fact 2026-03-12