X0508 4 2026-01-22 0 0001964333 Burke & Herbert Financial Services Corp. BHRB 0001971310 Zirk Angela R 100 SOUTH FAIRFAX STREET ALEXANDRIA VA 22314 0 1 0 0 EVP, Chief Experience Officer 0 Common Stock 2026-01-22 4 A 0 488 0 A 2412 D Common Stock 1928 I By IRA The reporting person received an award of 488 performance-based restricted stock units ("PRSUS") under the Burke & Herbert Bank 2024 - 2025 Merger Incentive Plan adopted May 1, 2024. The award will vest in three annual installments beginning on May 3, 2026, subject to the reporting person's continued employment through each applicable vesting date. Each vested PRSU will be settled in a share of Burke & Herbert Financial Services Corp. common stock within 60 days of the vested date. /s/ Matthew Rucker, as Attorney-in-Fact for Angela R. Zirk 2026-01-23