X0306 4 2014-03-07 0 0000866368 PS BUSINESS PARKS INC/CA PSB 0001230471 RUSSELL JOSEPH D JR C/O PS BUSINESS PARKS, INC. 701 WESTERN AVENUE GLENDALE CA 91201-2397 0 1 0 0 PRESIDENT / CEO Common Stock 2014-03-07 4 M 0 8000 52.35 A 41850 D Common Stock 2014-03-07 4 S 0 8000 85.393 D 33850 D Stock Option (right to buy) 52.35 2014-03-07 4 M 0 8000 0 D 2011-03-15 2020-03-15 Common Stock 8000 57000 D Includes 3,200 restricted stock units. Represents weighted average price. These shares were sold at prices ranging between $84.96 and $85.60. Full information regarding the number of shares sold at each separate price will be provided by the reporting person upon request to the staff of the Securities and Exchange Commission, the issuer or a security holder of the issuer. Stock option granted pursuant to the 2003 Stock Option and Incentive Plan. /s/ Steven M. Glick, Attorney-in-Fact 2014-03-10