X0306 4 2021-06-07 0000866368 PS BUSINESS PARKS INC/CA PSB 0001753390 Groves Trenton C/O PS BUSINESS PARKS, INC. 701 WESTERN AVENUE GLENDALE CA 91201 0 1 0 0 SVP, CAO & Asst. Sec. Common Stock 2021-06-07 4 S 0 3003 159.56 D 5721 D Depositary Shares Representing Series W Preferred Stock 2000 D Depositary Shares Representing Series X Preferred Stock 500 D The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $159.24 to $159.415, inclusive. The reporting person undertakes to provide to the Issuer, any security holder, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth herein. Includes 1,898 restricted stock units. /s/ Nathaniel A. Vitan, Attorney-in-Fact 2021-06-09