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 *
Chamberlain John W.
  2. Issuer Name and Ticker or Trading Symbol
American Assets Trust, Inc. [AAT]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
CEO and President
(Last)
(First)
(Middle)
C/O AMERICAN ASSETS TRUST, INC., 11455 EL CAMINO REAL, SUITE 200
3. Date of Earliest Transaction (Month/Day/Year)
01/19/2011
(Street)

SAN DIEGO, CA 92130
4. If Amendment, Date Original Filed(Month/Day/Year)
01/19/2011
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
Common Stock, par value $0.01 01/19/2011   J(1)   50,948 A (1) 50,948 I See Footnote (2)

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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

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Chamberlain John W.
C/O AMERICAN ASSETS TRUST, INC.
11455 EL CAMINO REAL, SUITE 200
SAN DIEGO, CA 92130
  X     CEO and President  

Signatures

 /s/ Michael E. Sullivan, Attorney-in-Fact   05/02/2013
**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) Shares of common stock issued in transactions relating to the formation of the Issuer and its operating partnership subsidiary, American Assets Trust, L.P. either pursuant to (1) contribution agreements with the Issuer or the Operating Partnership, pursuant to which Reporting Person and other parties contributed their interests in certain entities that directly or indirectly own properties, to the Issuer, the Operating Partnership or their respective subsidiaries, or (2) merger agreements, where certain entities (interests in which are directly or indirectly owned by the Reporting Person and other parties) that directly or indirectly own properties merged with and into the Issuer, the Operating Partnership or their respective subsidiaries. The value of the common stock was $20.50 per share as of the Transaction Date, based on the price of the common stock of the Issuer at the time of the Issuer's initial public offering.
(2) This amendment to Form 4 is filed for the purpose of clarifying that as of January 19, 2011, the date of the original Form 4, the Reporting Person owned 50,948 shares of common stock of American Assets Trust, Inc. indirectly. The amount of 275,948 shares that was originally reported in Table I, Item 5 inadvertently included 225,000 shares that were held by the Reporting Person directly. The correct amount of 50,948 shares includes (a) 18,880 shares held by Trust A of the W.E. & B.M. Chamberlain Trust, for which the Reporting Person is the trustee; and (b) 32,068 shares held by The John W. and Rebecca S. Chamberlain Trust dated July 14, 1994, for which the Reporting Person is the trustee. The Reporting Person disclaims beneficial ownership of such shares, except to the extent of his pecuniary interest therein.

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