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 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 *
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  

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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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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