X0306 4 2021-12-08 0000866368 PS BUSINESS PARKS, INC./MD PSB 0001280082 DUNBAR JENNIFER HOLDEN C/O PS BUSINESS PARKS, INC. 701 WESTERN AVENUE GLENDALE CA 91201 1 0 0 0 Common Stock 2021-12-08 4 M 0 2000 80.13 A 2067 D Common Stock 2021-12-08 4 M 0 2000 96.89 A 4067 D Common Stock 2021-12-08 5 G 0 E 4000 0 D 67 D Common Stock 4425 I As Trustee Stock Option (right to buy) 80.13 2021-12-08 4 M 0 2000 0 D 2016-04-28 2025-04-28 Common Stock 2000 0 D Stock Option (right to buy) 96.89 2021-12-08 4 M 0 2000 0 D 2017-04-26 2026-04-26 Common Stock 2000 0 D Reflects transfer of shares to Ms. Dunbar???s trust. By reporting person and her husband as trustees of the Lilac II Trust. Stock option granted pursuant to the 2012 Equity and Performance-Based Incentive Compensation Plan. Option vests in five (5) equal annual installments beginning one (1) year from the date of grant. /s/ Nathaniel A. Vitan, Attorney-in-Fact 2021-12-10