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   FORM 4  Y
  Check
  this box if no longer subject to Section 16. 
  Form 4 or Form 5 obligations may continue.  | 
  
   UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 
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   OMB APPROVAL  | 
 
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   OMB
  Number: 3235-0287  | 
 
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   1. Name and Address of Reporting Person * 
 (Last)
             (First)        
       (Middle) c/o Mack-Cali Realty Corporation (Street) 
 (City)
        (State)          (Zip) 
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    2. Issuer Name and Ticker  
 Mack-Cali Realty Corporation 
  3. I.R.S.
  Identification  | 
  
    4. Statement for 3/4/03 
 
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   6. Relationship of Reporting Person(s) to Issuer (Check all applicable) X Director 
 10% Owner 
 Officer (give title below) 
       Other (specify below)  
 
 
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   Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned  | 
 
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   1. Title of Security  | 
  
   2. Transaction Date
  (Month/Day/  | 
  
   2A. Deemed Execution Date,
  if any (Month/Day/  | 
  
   3. Transaction Code  | 
  
   4. Securities Acquired (A)
  or Disposed of (D)  | 
  
   5. Amount of Securities
  Beneficially Owned Following Reported Transaction(s)  | 
  
   6. Ownership Form: Direct
  (D) or Indirect (I)  | 
  
   7. Nature of Indirect
  Beneficial Ownership  | 
 |||
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   Code  | 
  
   V  | 
  
   Amount  | 
  
   (A) or (D)  | 
  
   Price  | 
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   Table II - Derivative Securities Acquired, Disposed of, or
  Beneficially Owned  | 
 
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   1. Title of Derivative Security (Instr. 3)  | 
  
   2. Conversion or Exercise Price of Derivative Security  | 
  
   3. Transaction Date  | 
  
   3A. Deemed Execution Date,
  if any (Month/Day/  | 
  
   4. Transaction Code (Instr. 8)  | 
  
   5. Number of Derivative
  Securities Acquired (A) or Disposed of (D)  | 
  
   6. Date Exercisable and Expiration
  Date  | 
  
   7. Title and Amount of
  Underlying Securities  | 
  
   8. Price of Derivative
  Security  | 
  
   9. Number of Derivative
  Securities Beneficially Owned Following Reported Transaction(s)  | 
  
   10. Ownership Form of
  Derivative Securities: Direct (D) or Indirect (I)  | 
  
   11. Nature of Indirect
  Beneficial Ownership  | 
 ||||
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   Code  | 
  
   V  | 
  
   (A)  | 
  
   (D)  | 
  
   Date  | 
  
   Expiration  | 
  
   Title  | 
  
   Amount or Number of Shares  | 
 ||||||||
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   Director Stock Option (Right to Buy)  | 
  
   $28.90  | 
  
   3/4/03  | 
  
   
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   A  | 
  
   
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   5,000  | 
  
   
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   3/4/04  | 
  
   3/4/13  | 
  
   Common Stock  | 
  
   5,000  | 
  
   
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   5,000  | 
  
   D  | 
  
   
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   Explanation of Responses: 
 
  | 
 
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   /s/ Brendan T. Byrne ** Signature of Reporting Person  | 
  
   3/6/03 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 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
http://www.sec.gov/divisions/corpfin/forms/form4.htm
Last update: 09/05/2002