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 *
SOKOLOV RICHARD S
  2. Issuer Name and Ticker or Trading Symbol
SIMON PROPERTY GROUP INC /DE/ [SPG]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
President and COO
(Last)
(First)
(Middle)
225 W. WASHINGTON STREET
3. Date of Earliest Transaction (Month/Day/Year)
02/25/2013
(Street)

INDIANAPOLIS, IN 46204
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

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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
LTIP Units (1) (1) 02/25/2013   A   85,157     (1)(2)   (1) Common Stock 85,157 $ 0.25 165,279 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
SOKOLOV RICHARD S
225 W. WASHINGTON STREET
INDIANAPOLIS, IN 46204
  X     President and COO  

Signatures

 Richard S. Sokolov, and his attorney-in-fact, Shelly Doran   02/26/2013
**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) Represents long-term incentive performance ("LTIP") units of Simon Property Group, L.P. (the "Operating Partnership"), of which Simon Property Group, Inc. (the "Company") is the general partner, issued as long-term incentive compensation pursuant to the Operating Partnership's 1998 Stock Incentive Plan in compliance with Rule 16b-3. When earned and vested, each LTIP unit may be converted into a unit of limited partnership interest ("Partnership Unit"). Each Partnership Unit may be exchanged for a share of the Company's common stock, or cash, as selected by the Company.
(2) On March 16, 2010, the reporting person was awarded a maximum of 85,157 LTIP units, subject to certain performance conditions. On February 25, 2013, the Compensation Committee of the Board of Directors of the Company determined that the extent to which the performance measures had been achieved during the performance period resulted in 100%, or 85,157, of the LTIP units becoming earned LTIP units. The earned LTIP units vest in two equal installments on January 1, 2014 and January 1, 2015 subject to a continued service requirement.

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