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 *
MACK DAVID 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, 11 COMMERCE DRIVE		 3. Date of Earliest Transaction (Month/Day/Year)
06/13/2005
(Street)

CRANFORD, NJ 07016		 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
Series B Preferred Units of Limited Partnership Interest $ 34.65 06/13/2005   C(1)     53,344 08/08/1988(2) 08/08/1988(2) Units of Limited Partnership Interest 1,539,509.38 (3) 0 (4) D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
MACK DAVID S
C/O MACK-CALI REALTY CORPORATION
11 COMMERCE DRIVE
CRANFORD, NJ 07016		   X      

Signatures

 /s/ David S. Mack   06/15/2005
**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 Series B Preferred Units of limited partnership interest (the "Series B Preferred Units") in Mack-Cali Realty, L.P. (the "Operating Partnership"), of which Mack-Cali Realty Corporation (the "Corporation") is the general partner, were redeemed by the Operating Partnership and converted into common units of limited partnership interest in the Operating Partnership (the "Common Units").
(2) Each Series B Preferred Unit was convertible at the election of (i) the holder at any time and (ii) the Operating Partnership on or after June 13, 2005, into the number of Common Units equal to (x) $1,000, divided by (y) $34.65. Based upon this conversion formula, each outstanding Series B Preferred Unit was converted into approximately 28.86 Common Units. The right to convert the Series B Preferred Units was not subject to expiration.
(3) The Common Units are redeemable by the holders of Common Units at their option, subject to certain restrictions, on the basis of one Common Unit for either one share of the Corporation's common stock, par value $0.01 per share (the "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.
(4) Excludes the following securities that are directly beneficially owned by the reporting person: (i) 775.686 phantom stock units issued to the reporting person pursuant to the Mack-Cali Realty Corporation Deferred Compensation Plan for Directors, which units are to be settled 100% in the Corporation's Common Stock upon the termination of the reporting person's service on the Board of Directors of the Corporation or upon a change in control of the Corporation; (ii) 2,156,947.38 Common Units (including the 1,539,509.38 as converted Common Units that are reported in Table II of this Form 4); and (iii) options to purchase 5,000 shares of the Corporation's common stock. Also excludes 160,000 Common Units held by The David and Sondra Mack Foundation (the "Foundation"), a charitable foundation of which the reporting person is a trustee. Pursuant to Rule 13d-4, the reporting person disclaims beneficial ownership of all of the Common Units held by the Foundation.

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