Stock Trading History of Hawthorne Maria R

The following table details the trading activities (stock purchases, stock sales, and stock option exercises) reported to the Securities and Exchange Commission (SEC) by insider Hawthorne Maria R since year 2005. The trader's CIK number is 1227459. At the time of this reporting, Hawthorne Maria R is the Senior Vice President of Ps Business Parks Inc/ca . (stock ticker symbol PSB). See this page for all insider trading activities at Ps Business Parks Inc/ca .

Stock purchases, sales, and option exercises reported by insider *Hawthorne Maria R* since 2005.
Trade Date	Symbol	Company Name (Issuer)	Trade Type	Shares	Price ($)	Value ($)
2008-08-15	PSB	Ps Business Parks Inc/ca	Sale	10,334	56.30	581,796
2008-08-15	PSB	Ps Business Parks Inc/ca	Option Exercise	10,334	29.18	301,597

Insider trading activities including stock purchases, stock sales, and option exercises listed in the above table cannot be completely guaranteed as to their accuracy. For more information regarding the trades made by Hawthorne Maria R (Senior Vice President of Ps Business Parks Inc/ca at the time of this reporting) see the Securities and Exchange Commission (SEC) website.