Ownership Submission
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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(Print or Type Responses)
1. Name and Address of Reporting Person *
Rudin Mitchell E.
  2. Issuer Name and Ticker or Trading Symbol
MACK CALI REALTY CORP [CLI]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Vice Chairman
(Last)
(First)
(Middle)
C/O MACK-CALI REALTY CORPORATION, HARBORSIDE 3, 210 HUDSON ST., STE. 400
3. Date of Earliest Transaction (Month/Day/Year)
04/03/2018
(Street)

JERSEY CITY, NJ 07311
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
Restricted Stock Units 04/03/2018   A(1)(2)   80.21 (1) (2) A $ 0 (1) (2) 13,595.26 (3) 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
Performance Stock Units $ 0 (4) 04/03/2018   A(4)   721.93     (5)   (5) Common Stock 721.93 $ 0 (4) 61,471.95 (6) D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Rudin Mitchell E.
C/O MACK-CALI REALTY CORPORATION
HARBORSIDE 3, 210 HUDSON ST., STE. 400
JERSEY CITY, NJ 07311
      Vice Chairman  

Signatures

 /s/ Mitchell E. Rudin   04/05/2018
**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) On June 5, 2015 (the "Grant Date"), the reporting person was issued 18,775.27 restricted stock units ("RSUs") which shall vest in three equal, annual installments commencing June 5, 2016. Each RSU represents a contingent right to receive one share of common stock of Mack-Cali Realty Corporation (the "Company"). Dividend equivalent rights accrue with respect to these RSUs when and as dividends are paid on the Company's common stock. On April 3, 2018, the record date for the Company's quarterly dividend on its common stock (the "Dividend Record Date"), 80.21 dividend equivalent rights at $16.83 per RSU were credited to the reporting person's account.
(2) The RSUs attributable to dividend equivalents shall vest when, and to the extent, the underlying RSUs are vested.
(3) Reported amount includes 6,765 vested RSUs that have been settled in shares of common stock and 6,830.26 unvested RSUs (including unvested dividend equivalents with respect to such unvested RSUs).
(4) On the Grant Date, the reporting person was granted 56,325.82 performance stock units ("PSUs") which shall vest based on the degree to which a relative total shareholder return target is attained for the three year performance period commencing on the Grant Date. Each PSU represents a contingent right to receive one share of the Company's common stock. Dividend equivalent rights accrue with respect to these PSUs when and as dividends are paid on the Company's common stock. On the Dividend Record Date, 721.93 dividend equivalent rights at $16.83 per PSU were credited to the reporting person's account.
(5) The PSUs attributable to dividend equivalents shall vest when, and to the extent, the underlying PSUs are vested.
(6) Reported amounts exclude the following securities directly beneficially owned by the reporting person: (i) options to purchase 400,000 shares of the Company's common stock, (ii) 118,989 Class A LTIP Units of the Operating Partnership, (iii) 23,041 Class B LTIP Units of the Operating Partnership, (iv) 56,138 Class C LTIP Units of the Operating Partnership, and (v) 9,270 Class D LTIP Units of the Operating Partnership. Subject to certain vesting conditions, all classes of LTIP Units of the Operating Partnership may be converted to Common Units on a one-for-one basis, which are redeemable for shares of common stock of the Company on a one-for-one basis.

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