<PAGE>
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
------------------------
SCHEDULE 13G
(RULE 13d-102)
INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT
TO RULES 13D-1(b), (c) AND (d) AND AMENDMENTS THERETO FILED
PURSUANT TO RULE 13d-2(b)
MACK-CALI REALTY CORPORATION
(Name of Issuer)
COMMON STOCK
(Title of Class of Securities)
554489 10 4
---------
(CUSIP Number)
------------------------------------------------------
(Date of Event Which Requires Filing of this Statement)
Check the appropriate box to designate the rule pursuant to which this Schedule
is filed:
|_| Rule 13d-1(b)
|_| Rule 13d-1(c)
|X| Rule 13d-1(d)
<PAGE>
SCHEDULE 13G
CUSIP NO. 554489 10 4
1. NAME OF REPORTING PERSON
I.R.S IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)
THE MACK GROUP
--------------
William L. Mack
Earle I. Mack
Mitchell E. Hersh
David Mack
Fredric Mack
Richard Mack
Stephen Mack
Earle Mack, as Trustee for Trust Earle Mack A
Earle Mack, as Trustee for Trust Earle Mack 4/30/92
William Mack, as Trustee for Trust William Mack A
William Mack, as Trustee for Trust William Mack 4/30/92
David Mack, as Trustee for Trust David Mack A
David Mack, as Trustee for Trust David Mack 4/30/92
Fredric Mack, as Trustee for Trust Fredric Mack A
Fredric Mack, as Trustee for Trust Fredric Mack 4/30/92
Phyllis Mack, as Trustee for Trust f/b/o Richard Mack
Phyllis Mack, as Trustee for Trust f/b/o Stephen Mack
Tri-West Associates, L.P.
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2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) |X|
(b) |_|
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3. SEC USE ONLY
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4. CITIZENSHIP OR PLACE OF ORGANIZATION
U.S.
---------------------------------------------------------------------------
<PAGE>
NUMBER OF 5. SOLE VOTING POWER 0
SHARES
BENEFICIALLY 6. SHARED VOTING POWER 11,413,713
OWNED BY -------------------------------------
EACH
REPORTING 7. SOLE DISPOSITIVE POWER 0
PERSON WITH ----------------------------------
8. SHARED DISPOSITIVE POWER 11,413,713
--------------------------------
9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
11,413,713
- --------------------------------------------------------------------------------
10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES
CERTAIN SHARES* |_|
- --------------------------------------------------------------------------------
11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
16.34%
- --------------------------------------------------------------------------------
12. TYPE OF REPORTING PERSON*
OO
- --------------------------------------------------------------------------------
* SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
Item 1(a). NAME OF ISSUER:
--------------
Mack-Cali Realty Corporation
Item 1(b). ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES:
-----------------------------------------------
11 Commerce Drive, Cranford, New Jersey 07016
Item 2(a). NAME OF PERSON FILING:
---------------------
The Mack Group
Item 2(b). ADDRESS OF PRINCIPAL BUSINESS OFFICE:
------------------------------------
11 Commerce Drive, Cranford, New Jersey 07016
Item 2(c). CITIZENSHIP:
-----------
Each member of The Mack Group is a citizen of the United States.
Item 2(d). TITLE OF CLASS OF SECURITIES:
----------------------------
Common Stock
Item 2(e). CUSIP NUMBER:
------------
554489 10 4
Item 3. TYPE OF REPORTING PERSON:
------------------------
Not applicable.
Item 4. OWNERSHIP AS OF DECEMBER 31, 1999:
---------------------------------
(a) Amount beneficially owned:
11,413,713
(b) Percent of class:
16.34%
(c) Number of shares to which such person has:
(i) sole power to vote or direct vote:
0
<PAGE>
(ii) shared power to vote or direct vote:
11,413,713
(iii) sole power to dispose or to direct the disposition
of:
0
(iv) shared power to dispose or direct the disposition
of:
11,413,713
Item 5. OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS.
--------------------------------------------
Not applicable.
Item 6. OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON.
---------------------------------------------------------------
Not applicable.
Item 7. IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED
THE SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY.
--------------------------------------------------------------------
Not applicable.
Item 8. IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP.
---------------------------------------------------------
See Exhibit A attached hereto.
Item 9. NOTICE OF DISSOLUTION OF GROUP.
------------------------------
Not applicable.
Item 10. CERTIFICATION.
------------------------------
Not applicable.
<PAGE>
SIGNATURES
After reasonable inquiry and to the best of our knowledge and
belief, we certify that the information set forth in this statement is true,
complete and correct.
Dated: February 14, 2000 /S/ WILLIAM L. MACK
---------------------------------------------
William L. Mack
Dated: February 14, 2000 /S/ EARLE I. MACK
---------------------------------------------
Earle I. Mack
Dated: February 14, 2000 /S/ MITCHELL E. HERSH
---------------------------------------------
Mitchell E. Hersh
Dated: February 14, 2000 /S/ DAVID MACK
---------------------------------------------
David Mack
Dated: February 14, 2000 /S/ FREDRIC MACK
---------------------------------------------
Fredric Mack
Dated: February 14, 2000 /S/ RICHARD MACK
---------------------------------------------
Richard Mack
Dated: February 14, 2000 /S/ STEPHEN MACK
---------------------------------------------
Stephen Mack
Dated: February 14, 2000 /S/ EARLE MACK
---------------------------------------------
Earle Mack, as Trustee for Trust
Earle Mack A
Dated: February 14, 2000 /S/ EARLE MACK
---------------------------------------------
Earle Mack, as Trustee for Trust
Earle Mack 4/30/92
Dated: February 14, 2000 /S/ WILLIAM MACK
---------------------------------------------
William Mack, as Trustee for Trust
William Mack A
Dated: February 14, 2000 /S/ WILLIAM MACK
---------------------------------------------
William Mack, as Trustee for Trust
William Mack 4/30/92
Dated: February 14, 2000 /S/ DAVID MACK
---------------------------------------------
David Mack, as Trustee for Trust
David Mack A
<PAGE>
Dated: February 14, 2000 /S/ DAVID MACK
---------------------------------------------
David Mack, as Trustee for Trust
David Mack 4/30/92
Dated: February 14, 2000 /S/ FREDRIC MACK
---------------------------------------------
Fredric Mack, as Trustee for Trust
Fredric Mack A
Dated: February 14, 2000 /S/ FREDRIC MACK
---------------------------------------------
Fredric Mack, as Trustee for Trust
Fredric Mack 4/30/92
Dated: February 14, 2000 /S/ PHYLLIS MACK
---------------------------------------------
Phyllis Mack, as Trustee for Trust
f/b/o Richard Mack
Dated: February 14, 2000 /S/ PHYLLIS MACK
---------------------------------------------
Phyllis Mack, as Trustee for Trust
f/b/o Stephen Mack
Dated: February 14, 2000 Tri-West Associates, L.P.
By: Tri-West Operating Corporation
General Partner
By: /S/ WILLIAM L. MACK
----------------------------------------
William L. Mack
Chairman
<PAGE>
Exhibit A
THE MACK GROUP
<TABLE>
<CAPTION>
- ----------------------------------------------------------------------------------------------------
NAME NUMBER OF SHARES
BENEFICIALLY OWNED*
- ----------------------------------------------------------------------------------------------------
<S> <C>
William L. Mack 2,856,787
- ----------------------------------------------------------------------------------------------------
Earle I. Mack 2,469,811
- ----------------------------------------------------------------------------------------------------
Mitchell E. Hersh 387,909
- ----------------------------------------------------------------------------------------------------
David Mack 2,577,374
- ----------------------------------------------------------------------------------------------------
Fredric Mack 847,892
- ----------------------------------------------------------------------------------------------------
Richard Mack 14,355
- ----------------------------------------------------------------------------------------------------
Stephen Mack 14,355
- ----------------------------------------------------------------------------------------------------
Earle Mack, as Trustee for Trust Earle Mack A 132,946
- ----------------------------------------------------------------------------------------------------
Earle Mack, as Trustee for Trust Earle Mack 4/30/92 79,160
- ----------------------------------------------------------------------------------------------------
William Mack, as Trustee for Trust William Mack A 132,915
- ----------------------------------------------------------------------------------------------------
William Mack, as Trustee for Trust William Mack 4/30/92 79,162
- ----------------------------------------------------------------------------------------------------
Fredric Mack, as Trustee for Trust Fredric Mack A 132,945
- ----------------------------------------------------------------------------------------------------
Fredric Mack, as Trustee for Trust Fredric Mack 4/30/92 79,160
- ----------------------------------------------------------------------------------------------------
David Mack, as Trustee for Trust David Mack A 132,945
- ----------------------------------------------------------------------------------------------------
David Mack, as Trustee for Trust David Mack 4/30/92 79,160
- ----------------------------------------------------------------------------------------------------
Phyllis Mack, as Trustee for Trust f/b/o Richard Mack 491,850
- ----------------------------------------------------------------------------------------------------
Phyllis Mack, as Trustee for Trust f/b/o Stephen Mack 491,850
- ----------------------------------------------------------------------------------------------------
Tri-West Associates, L.P. 413,137
- ----------------------------------------------------------------------------------------------------
TOTAL 11,413,713
- ----------------------------------------------------------------------------------------------------
</TABLE>
* Includes limited partnership units redeemable for shares of Common Stock of
Mack-Cali Realty Corporation, vested warrants to purchase limited partnership
units redeemable for shares of Common Stock and vested options and warrants
to purchase shares of Common Stock.
<PAGE>
Exhibit B
JOINT FILING AGREEMENT
In accordance with Rule 13d-1(k) under the Securities Exchange Act of
1934, as amended, the persons named below agree to the joint filing on behalf of
each of them of a statement on Schedule 13G (including amendments thereto) with
respect to the common stock, par value $0.01 per share, of Mack-Cali Realty
Corporation.
Dated: February 14, 2000 /S/ WILLIAM L. MACK
---------------------------------------------
William L. Mack
Dated: February 14, 2000 /S/ EARLE I. MACK
---------------------------------------------
Earle I. Mack
Dated: February 14, 2000 /S/ MITCHELL E. HERSH
---------------------------------------------
Mitchell E. Hersh
Dated: February 14, 2000 /S/ DAVID MACK
---------------------------------------------
David Mack
Dated: February 14, 2000 /S/ FREDRIC MACK
---------------------------------------------
Fredric Mack
Dated: February 14, 2000 /S/ RICHARD MACK
---------------------------------------------
Richard Mack
Dated: February 14, 2000 /S/ STEPHEN MACK
---------------------------------------------
Stephen Mack
Dated: February 14, 2000 /S/ EARLE MACK
---------------------------------------------
Earle Mack, as Trustee for Trust
Earle Mack A
Dated: February 14, 2000 /S/ EARLE MACK
---------------------------------------------
Earle Mack, as Trustee for Trust
Earle Mack 4/30/92
Dated: February 14, 2000 /S/ WILLIAM MACK
---------------------------------------------
William Mack, as Trustee for Trust
William Mack A
Dated: February 14, 2000 /S/ WILLIAM MACK
---------------------------------------------
William Mack, as Trustee for Trust
William Mack 4/30/92
Dated: February 14, 2000 /S/ DAVID MACK
---------------------------------------------
David Mack, as Trustee for Trust
David Mack A
Dated: February 14, 2000 /S/ DAVID MACK
---------------------------------------------
David Mack, as Trustee for Trust
David Mack 4/30/92
Dated: February 14, 2000 /S/ FREDRIC MACK
---------------------------------------------
Fredric Mack, as Trustee for
Trust Fredric Mack A
Dated: February 14, 2000 /S/ FREDRIC MACK
---------------------------------------------
Fredric Mack, as Trustee for Trust
Fredric Mack 4/30/92
Dated: February 14, 2000 /S/ PHYLLIS MACK
---------------------------------------------
Phyllis Mack, as Trustee for Trust
f/b/o Richard Mack
Dated: February 14, 2000 /S/ PHYLLIS MACK
---------------------------------------------
Phyllis Mack, as Trustee for Trust
f/b/o Stephen Mack
Dated: February 14, 2000 Tri-West Associates, L.P.
By: Tri-West Operating Corporation
General Partner
By: /S/ WILLIAM L. MACK
---------------------------------------------
William L. Mack
Chairman
- --------
