FORM 4		UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940	OMB APPROVAL OMB Number: 3235-0287 Expires: December 31, 2014 Estimated average burden hours per response 0.5
	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person* RUSSELL JOSEPH D JR (Last) (First) (Middle) C/O PS BUSINESS PARKS, INC., 701 WESTERN AVENUE (Street) GLENDALE CA 91201-2397 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol PS BUSINESS PARKS INC/CA [PSB]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X Director 10% Owner X Officer (give title below) Other (specify below) PRESIDENT / CEO
	3. Date of Earliest Transaction (Month/Day/Year) 06/15/2012
	4. If Amendment, Date of Original Filed (Month/Day/Year)	6. Individual or Joint/Group Filing (Check Applicable Line) X Form filed by One Reporting Person Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock								33,850 (1)	D
Depositary Shares Representing Series H Preferred Stock	06/15/2012		J(5)		2,000	D	$ 25	0	I	By IRA (3)
Depositary Shares Representing Series H Preferred Stock	06/15/2012		J(5)		300	D	$ 25	0	I	By 401k (4)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Stock Option (right to buy) (2)

$ 52.35

03/15/2011

03/15/2020

Common Stock

65,000

65,000

D

Stock Option (right to buy) (2)

$ 43.75

08/05/2006

08/05/2015

Common Stock

50,000

50,000

D

Stock Option (right to buy) (Common Stock) (2)

$ 34.34

09/09/2003

09/09/2012

Common Stock

29,216

29,216

D

Stock Option (right to buy) (Common Stock) (2)

$ 34.34

09/09/2003

09/09/2012

Common Stock

4,216

4,216

D

Explanation of Responses:

1. Includes 4,000 restricted stock units

2. Stock options granted pursuant to the 2003 Stock Option and Incentive Plan

3. By a custodian of an IRA for benefit of reporting person

4. By a cusdodian of a 401k for benefit of reporting person's wife

5. The reported securities were called for redemption at the price of $25 per share.

	/s/ Joseph D. Russell, Jr.	06/15/2012
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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