PS Business Parks

701 WESTERN AVE. GLENDALE, CA 91201
T: 818-244-8080 F: 818-242-0566

07/07/10 - PSB to release second quarter 2010 earnings and host quarterly conference call

06/18/10 - PSB acquires business park in Rockville, Maryland, for $23.4 million

06/02/10 - PSB to present at REITWeek 2010: NAREIT’s Investor Forum

05/06/10 - PSB announces redemption of all outstanding depositary shares representing interests in its 7.950% Cumulative Preferred Stock, Series K

PS Business Parks, Inc. (NYSE: PSB) is a publicly traded real estate company that owns, operates or manages business parks comprising more than 20.1 million square feet of commercial industrial, office, retail and "flex" space throughout the nation. The Company's primary objective is to maximize shareholder value by achieving long-term growth in net asset value per share. Key elements of PS Business Parks' growth strategy include: maximizing portfolio cash flow, maintaining focus on core markets, acquire and develop well positioned quality properties where valuations are justified, continue to attract a diversified tenant base, develop new tenant services and provide superior tenant service. A predecessor of PS Business Parks was formed as a division of Public Storage in 1986 and became a public Real Estate Investment Trust in March 1998.

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COMPANY ADDRESS PS Business Parks, Inc. 701 Western Avenue Glendale, CA 91201 Phone: (818) 244-8080 Fax: (818) 242-0566 info@psbusinessparks.com INVESTOR RELATIONS CONTACT Edward Stokx Executive VP and Chief Financial Officer Phone: (818) 244-8080 ext. 1649 Fax: (818) 242-0566 estokx@psbusinessparks.com	EXCHANGE NYSE, symbol "PSB" ALL LISTED SECURITIES PSB - Common Stock PSBprH - Series H Preferred PSBprI - Series I Preferred PSBprK - Series K Preferred PSBprL - Series L Preferred PSBprM - Series M Preferred PSBprO - Series O Preferred PSBprP - Series P Preferred TRANSFER AGENT American Stock Transfer & Trust Company 59 Maiden Lane New York, NY 10038 (800) 937-5449

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PS Business Parks , Inc. (NYSE:PSB) is a publicly traded Real Estate Investment Trust (REIT) specializing in leasing commercial multi-tenant flex, office and industrial space throughout the United States with locations in Arizona, California, Florida, Maryland, Oregon, Texas, Virginia, Washington.

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