Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

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
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(Print or Type Responses)
1. Name and Address of Reporting Person *
Gold Alan D
   2. Issuer Name and Ticker or Trading Symbol
BioMed Realty Trust Inc [BMR] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Chairman and CEO
(Last)
(First)
(Middle)
17190 BERNARDO CENTER DRIVE		 3. Date of Earliest Transaction (Month/Day/Year)
12/20/2012
(Street)

SAN DIEGO, CA 92128		 4. If Amendment, Date 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
(City)
(State)
(Zip)
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

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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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
Limited Partnership Units (1)             10/01/2005   (2) Common Stock 17,144   17,144 I By SciMed Prop III, Inc.
Limited Partnership Units (1)             10/01/2005   (2) Common Stock 161,894   161,894 I By SunMar Investments, Inc.
Limited Partnership Units (1) 12/20/2012   G(3) V   113,644 10/01/2005   (2) Common Stock 1,041,742 $ 0 928,098 D  
LTIP Units (4) (4)               (5)   (6) Common Stock 90,200   90,200 D  
Limited Partnership Units (1) 12/20/2012   G(3) V 56,822   10/01/2005   (2) Common Stock 56,822 $ 0 56,822 I By Children's Trust No. 1 (7)
Limited Partnership Units (1) 12/20/2012   G(3) V 56,822   10/01/2005   (2) Common Stock 56,822 $ 0 56,822 I By Children's Trust No.2 (7)

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Gold Alan D
17190 BERNARDO CENTER DRIVE
SAN DIEGO, CA 92128		   X     Chairman and CEO  

Signatures

 Gary A. Kreitzer, Attorney-in-Fact   12/21/2012
**Signature of Reporting Person Date

Explanation of Responses:

* 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).
(1) Limited Partnership Units in BioMed Realty, L.P. (the "Operating Partnership"). Limited Partnership Units are redeemable for cash based upon the fair market value of an equivalent number of shares of common stock of BioMed Realty Trust, Inc. (the "Company"), or, at the election of the Company, shares of the Company's common stock on a 1-for-1 basis.
(2) The Limited Partnership Units have no expiration date.
(3) Represents gifts to irrevocable children's trusts.
(4) Profits interest units of the Operating Partnership. The LTIP Units are subject to time-based restrictions.
(5) The LTIP Units are subject to time-based restrictions. Upon the occurrence of certain "triggering events," the LTIP Units can over time achieve full parity with common units of the Operating Partnership for all purposes, and therefore accrete to an economic value equivalent to one share of common stock of the Company on a one-for-one basis. If such parity is reached, vested LTIP Units convert to common units of the Operating Partnership and then may be redeemed for cash in an amount equal to the then fair value of an equal number of shares of common stock or converted into an equal number of shares of common stock, as determined by the Company.
(6) The LTIP Units do not have an expiration date.
(7) An irrevocable trust of which a family member of the reporting person is a trustee and of which one of the reporting person's adult children is the sole beneficiary.

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