SEC FORM 3

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person^*

AMERICAN ASSETS INC

(Last)

(First)

(Middle)

C/O AMERICAN ASSETS TRUST, INC.

11455 EL CAMINO REAL, SUITE 200

(Street)

SAN DIEGO

92130

(City)

(State)

(Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
01/19/2011

3. Issuer Name and Ticker or Trading Symbol
American Assets Trust, Inc. [ AAT ]

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

Director	X	10% Owner
Officer (give title below)		Other (specify below)

5. 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 Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock, par value $0.01⁽¹⁾	181,805	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
1. Title of Derivative Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
Operating Partnership Units⁽²⁾	03/19/2012	⁽³⁾	Common Stock, par value $0.01	5,107,577	⁽⁴⁾	D
Operating Partnership Units⁽²⁾	03/19/2012	⁽³⁾	Common Stock, par value $0.01	2,004	⁽⁴⁾	I	See Footnote⁽⁵⁾

Explanation of Responses:

1. Shares of common stock issued 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. Represents common units of limited partnership interest ("OP Units") in the Operating Partnership. The Issuer is the general partner of the Operating Partnership. OP Units are redeemable fourteen months from the Transaction Date for cash equal to the then-current market value of one share of common stock, or at the election of the Issuer, for shares of the Issuer's common stock on a one-for-one basis.

3. Not Applicable.

4. The OP Units were issued either pursuant to (1) contribution agreements with the Issuer or the Operating Partnership, pursuant to which Reporting Person 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) that directly or indirectly own properties merged with and into the Issuer, the Operating Partnership or their respective subsidiaries. The value of the OP Units 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.

5. Amount includes 2,004 OP Units held by Western Insurance Holdings, Inc., which is controlled by the Reporting Person. The Reporting Person disclaims beneficial ownership of such OP Units, except to the extent of its pecuniary interest therein.

Remarks:

See Exhibit 99, Power of Attorney.

	/s/ Nicole B. Baker, Attorney-in-fact	01/19/2011
	** 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 5 (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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.