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

OMB APPROVAL OMB Number: 3235-0287 Expires: January 31, 2005 Estimated average burden hours per response... 0.5

(Print or Type Responses)

1. Name and Address of Reporting Person * BLOOM DAVID C   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) _____ Director _____ 10% Owner _____ Officer (give title below) __X__ Other (specify below) Advisory Director (Last) (First) (Middle) 105 EISENHOWER PKWY. 3. Date of Earliest Transaction (Month/Day/Year) 03/20/2008 (Street) ROSELAND, NJ 07068 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 Common Stock 03/20/2008   M   100,000 A (1) 127,886 I Partnership (4) Common Stock 03/24/2008   M   76,200 A (1) 204,086 I Partnership (4) Common Stock 03/20/2008   S   100,000 D $ 95.0917 104,086 I Partnership (4) Common Stock 03/24/2008   S   76,200 D $ 95.67 27,886 I Partnership (4)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
	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 control number.		SEC 1474 (9-02)

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

6% Convertible Preferred Units in Simon Property Group, L.P.

(2)

03/20/2008

C

125,933

(2)

(3)

Common Stock

100,000

(2) (1)

468,820

I

Partnership (4)

6% Convertible Preferred Units in Simon Property Group, L.P.

(2)

03/24/2008

C

95,961

(2)

(3)

Common Stock

76,200

(2) (1)

372,859

I

Partnership (4)

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
BLOOM DAVID C 105 EISENHOWER PKWY. ROSELAND, NJ 07068				Advisory Director

Signatures

David C. Bloom, and his attorney-in-fact, Shelly Doran		03/24/2008
**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)	Reporting person elected to convert units of limited partnership interest ("Units") of Simon Property Group, L.P., of which the issuer is the general partner. Units may be exchanged for an equal number of shares of common stock or cash, as selected by the issuer. Common stock was issued for the exchanged units. The closing price of a share of common stock on March 20, 2008 as reported by the New York Stock Exchange was $95.02. The closing price of a share of common stock on March 24, 2008 as reported by the New York Stock Exchange was $92.83
(2)	Reporting person elected to convert 6% Convertible Preferred Units into common units. During the period from January 2, 2008 to March 31, 2008, each 6% Convertible Preferred Unit is convertible into a Common Unit at a rate of 1 Preferred Unit to 0.794079 of a Common Unit.
(3)	None
(4)	As a partner in Woodbury Family Associates, L.P.

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

Potential persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB number.