LENKIN HARVEY 4

4 · PS BUSINESS PARKS INC/CA · Filed Mar 9, 2010

Form 4

Period: 2010-03-08

Director

Transactions

Exercise/Conversion
Common Stock
2010-03-08$23.75/sh+1,000$23,750→ 2,800 total(indirect: By Trust)
Sale
Common Stock
2010-03-08$54.42/sh−2,000$108,831→ 1,800 total(indirect: By Trust)
Exercise/Conversion
Common Stock
2010-03-08$26.40/sh+1,000$26,400→ 3,800 total(indirect: By Trust)
Exercise/Conversion
Stock Option (right to buy)
2010-03-08−1,000→ 0 total
Exercise: $26.40From: 2002-05-08Exp: 2011-05-08→ Common Stock (1,000 underlying)
Exercise/Conversion
Stock Option (right to buy)
2010-03-08−1,000→ 0 total
Exercise: $23.75From: 2001-05-09Exp: 2010-05-09→ Common Stock (1,000 underlying)

Holdings

Depositary Shares Representing Series L Preferred Stock
(indirect: By IRA)
6,000
Depositary Shares Representing Series P Preferred Stock
(indirect: By IRA)
181
Stock Option (right to buy)
Exercise: $68.90From: 2008-04-30Exp: 2017-04-30→ Common Stock (2,000 underlying)
2,000
Stock Option (right to buy)
Exercise: $51.25From: 2007-05-01Exp: 2016-05-01→ Common Stock (2,000 underlying)
2,000
Stock Option (right to buy)
Exercise: $57.79From: 2009-05-05Exp: 2018-05-05→ Common Stock (2,000 underlying)
2,000
Stock Option (right to buy)
Exercise: $32.48From: 2004-05-06Exp: 2013-05-06→ Common Stock (2,000 underlying)
2,000
Common Stock
(indirect: By IRA)
116
Stock Option (right to buy)
Exercise: $43.84From: 2010-05-04Exp: 2019-05-04→ Common Stock (2,000 underlying)
2,000
Stock Option (right to buy)
Exercise: $35.43From: 2003-05-14Exp: 2012-05-14→ Common Stock (1,000 underlying)
1,000
Depositary Shares Representing Series P Preferred Stock
(indirect: By IRA)
272

Footnotes (6)

[F1]By a family trust of which the reporting person and his spouse are trustees.
[F2]By a custodian for an IRA for benefit of reporting person's wife.
[F3]By a custodian for an IRA for benefit of self.
[F4]Stock Options granted pursuant to the 2003 Stock Option and Incentive Plan; vests in 5 equal annual installments beginning 1 year from date of grant.
[F5]Stock Options granted pursuant to the 1997 Stock Option and Incentive Plan.
[F6]Represents weighted average purchase price. These shares were sold at prices ranging between $51.38 and $51.45. 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.

Documents

1 file