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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1. Name and Address of Reporting Person * BERGER MARTIN S   2. Issuer Name and Ticker or Trading Symbol MACK CALI REALTY CORP [CLI] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) C/O MACK-CALI REALTY CORPORATION, 343 THORNALL STREET 3. Date of Earliest Transaction (Month/Day/Year) 09/23/2009 (Street) EDISON, NJ 08837 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 09/23/2009   M(1)   5,000 A $ 26.25 7,800 D   Common Stock 09/23/2009   S(1)   1,000 D $ 35.15 6,800 D   Common Stock 09/23/2009   S(1)   1,000 D $ 35.1537 5,800 D   Common Stock 09/23/2009   S(1)   700 D $ 35.16 5,100 D   Common Stock 09/23/2009   S(1)   1,000 D $ 35.42 4,100 D   Common Stock 09/23/2009   S(1)   1,000 D $ 35.513 3,100 D   Common Stock 09/23/2009   S(1)   300 D $ 35.52 2,800 D

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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

Director Stock Option (Right to Buy)

$ 26.25

09/23/2009

M(1)

5,000

09/07/2001(2)

09/07/2010

Common Stock

5,000

$ 0

0 (3)

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
BERGER MARTIN S C/O MACK-CALI REALTY CORPORATION 343 THORNALL STREET EDISON, NJ 08837	X

Signatures

/s/ Martin S. Berger		09/25/2009
**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)	The reporting person obtained and sold the common stock as a result of the cashless exercise of Director Stock Options.
(2)	On September 7, 2000, the reporting person was granted an option to purchase 5,000 shares of common stock. The option vested on September 7, 2001.
(3)	Reported amount excludes 516,322 Units of Limited Partnership Interest ("Common Units") of Mack-Cali Realty, L.P. (the "Operating Partnership") directly beneficially owned by the reporting person and 5,210 Common Units indirectly beneficially owned by the reporting person through MSB Management, Inc. Common Units are redeemable by the holders of Common Units, subject to certain restrictions, on the basis of one Common Unit for either one share of Mack-Cali Realty Corporation (the "Corporation") common stock, or cash equal to the fair market value of a share of common stock at the time of the redemption. The Corporation has the option to deliver shares of common stock in exchange for all or any portion of the cash requested.

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