Exhibit 4.2


                          MACK-CALI REALTY CORPORATION

                             ARTICLES SUPPLEMENTARY
                                       FOR
                  SERIES A JUNIOR PARTICIPATING PREFERRED STOCK
                 (Pursuant to Sections 2-105(a)(9) and 2-208(a)
                    of the Maryland General Corporation Law)



         MACK-CALI REALTY CORPORATION, a Maryland corporation (the "Company")
hereby certifies to the State Department of Assessments and Taxation of Maryland
that:

         FIRST: Pursuant to authority conferred upon the Board of Directors
by the charter of the Company (the "Charter"), the Board of Directors, as
required by Section 2-208 of the Maryland General Corporation Law, pursuant
to resolutions adopted at a meeting duly called on June 10, 1999, classified
and designated 200,000 shares (the "Shares") of authorized but unissued
Preferred Stock (as defined in the Charter) as shares of Series A Junior
Participating Preferred Stock, with the preferences, conversion and other
rights, voting powers, restrictions, limitations as to dividends and other
distributions, qualifications and terms and conditions of redemption as
follows, which upon any restatement of the Charter shall be made part of
Article IV of the Charter, with any necessary or appropriate changes to the
enumeration or lettering of sections or subsections hereof:

                  SERIES A JUNIOR PARTICIPATING PREFERRED STOCK

         Section 1. DESIGNATION AND AMOUNT. This series of Preferred Stock shall
be designated the "Series A Junior Participating Preferred Stock" (the "Series A
Preferred Stock") and the number of shares which shall constitute the Series A
Preferred Stock shall be 200,000 shares. Such number of shares may be increased
or decreased by resolution of the Board of Directors; provided, that no decrease
shall reduce the number of shares of Series A Preferred Stock to a number less
than the number of shares then outstanding plus the number of shares reserved
for issuance upon the exercise of outstanding options, rights or warrants or
upon the conversion of any outstanding securities issued by the Company
convertible into Series A Preferred Stock.

         Section 2. DIVIDEND RIGHTS. (a) Subject to the rights of holders of any
shares of any series of Preferred Stock (or any similar stock) ranking prior and
superior to the Series A Preferred Stock with respect to dividends, the holders
of shares of Series A Preferred Stock, in preference to the holders of common
stock, par value $0.01 per share (the "Common Stock"), of the Company and of any
other junior stock, shall be entitled to receive, when, as and if authorized by
the Board of Directors out of assets legally available for the purpose,
quarterly dividends payable in cash on the first business day of April, July,
October and January in each year (each such date being referred to herein as a
"Quarterly Dividend Payment Date"), commencing on the first Quarterly Dividend
Payment Date after the first issuance of a share or





fraction of a share of Series A Preferred Stock, in an amount per share (rounded
to the nearest cent) equal to the greater of (i) $1.00 or (ii) subject to the
provision for adjustment hereinafter set forth, 1,000 times the aggregate per
share amount of all cash dividends, and 1,000 times the aggregate per share
amount (payable in kind) of all non-cash dividends or other distributions (other
than a dividend payable in shares of Common Stock) or a subdivision of the
outstanding shares of Common Stock (by reclassification or otherwise))
authorized on the Common Stock since the immediately preceding Quarterly
Dividend Payment Date or, with respect to the first Quarterly Dividend Payment
Date, since the first issuance of any share or fraction of a share of Series A
Preferred Stock. In the event the Board of Directors of the Company shall at any
time (A) authorize, declare or pay any dividend on the Common Stock payable in
shares of Common Stock, or (ii) effect a subdivision or combination or
consolidation of the outstanding shares of Common Stock into a greater or lesser
number of shares of Common Stock, then in each such case the amount to which
holders of Series A Preferred Stock were entitled immediately prior to such
event under clause (ii) of the preceding sentence shall be adjusted by
multiplying such amount by a fraction, the numerator of which is the number of
shares of Common Stock outstanding immediately after such event and the
denominator of which is the number of shares of Common Stock that were
outstanding immediately prior to such event.

                  (b) The Company shall declare a dividend or distribution on
the Series A Preferred Stock as provided in paragraph (a) of this Section 1
immediately after it declares a dividend or distribution on the Common Stock
(other than a dividend payable in shares of Common Stock); provided that, in the
event no dividend or distribution shall have been declared on the Common Stock
during the period between any Quarterly Dividend Payment Date and the next
subsequent Quarterly Dividend Payment Date, a dividend of $1.00 per share on the
Series A Preferred Shares shall nevertheless be payable on such subsequent
Quarterly Dividend Payment Date.

                  (c) Dividends shall begin to accrue and be cumulative on
outstanding Series A Preferred Stock from the Quarterly Dividend Payment Date
next preceding the date of issue of such shares, unless the date of issue of
such shares is prior to the record date for the first Quarterly Dividend Payment
Date, in which case dividends on such shares shall begin to accrue from the date
of issue of such shares, or unless the date of issue is a Quarterly Dividend
Payment Date or is a date after the record date for the determination of holders
of shares of Series A Preferred Stock entitled to receive a quarterly dividend
and before such Quarterly Dividend Payment Date, in either of which events such
dividends shall begin to accrue and be cumulative from such Quarterly Dividend
Payment Date. Accrued but unpaid dividends shall not bear interest. Dividends
paid on the shares of Series A Preferred Stock in an amount less than the total
amount of such dividends at the time accrued and payable on such shares shall be
allocated pro rata on a share-by-share basis among all such shares at the time
outstanding. The Board of Directors may fix a record date for the determination
of holders of shares of Series A Preferred Stock entitled to receive payment of
a dividend or distribution declared thereon, which record date shall be no more
than 60 days prior to the date fixed for the payment thereof.

         Section 3. VOTING RIGHTS. The holders of shares of Series A Preferred
Stock shall have the following voting rights:


                  (a) Subject to the provision for adjustment hereinafter set
forth, each share of Series A Preferred Stock shall entitle the holder thereof
to 1,000 votes on all matters submitted to a vote of the stockholders of the
Company. In the event the Company shall at any time (i) declare or pay any
dividend on the Common Stock payable in shares of Common Stock, or (ii) effect a
subdivision or combination or consolidation of the outstanding shares of Common
Stock into a greater or lesser number of shares of Common Stock, then in each
such case the number of votes per share to which holders of Series A Preferred
Stock were entitled immediately prior to such event shall be adjusted by
multiplying such number by a fraction, the numerator of which is the number of
shares of Common Stock outstanding immediately after such event and the
denominator of which is the number of shares of Common Stock that were
outstanding immediately prior to such event.

                  (b) Except as otherwise provided herein, in any other articles
supplementary creating a series of Preferred Stock or any similar stock, or by
law, the holders of shares of Series A Preferred Stock and the holders of shares
of Common Stock and any other stock of the Company having general voting rights
shall vote together as one class on all matters submitted to a vote of
stockholders of the Company.

                  (c) Except as set forth herein, holders of shares of Series A
Preferred Stock shall have no special voting rights and their consent shall not
be required (except to the extent they are entitled to vote with holders of
Common Stock as set forth herein) for taking any corporate action.

         Section 4. CERTAIN RESTRICTIONS.

                  (a) Whenever quarterly dividends or other dividends or
distributions payable on the Series A Preferred Stock as provided in Section 2
are in arrears, thereafter and until all accrued and unpaid dividends and
distributions, whether or not authorized or declared, on shares of Series A
Preferred Stock outstanding shall have been paid in full, the Company shall not:

                           (i) authorize, declare or pay dividends, or make any
other distributions, on any shares of stock ranking junior (either as to
dividends or upon liquidation, dissolution or winding up) to the Series A
Preferred Stock;

                           (ii) authorize, declare or pay dividends, or make any
other distributions, on any shares of stock ranking on a parity (either as to
dividends or upon liquidation, dissolution or winding up) with the Series A
Preferred Stock, except dividends paid ratably on the Series A Preferred Stock
and all such parity stock on which dividends are payable or in arrears in
proportion to the total amounts to which the holders of all such shares are then
entitled;

                           (iii) redeem or purchase or otherwise acquire for
consideration shares of any stock ranking junior (either as to dividends or upon
liquidation, dissolution or winding up) with the Series A Preferred Stock,
provided that the Company may at any time redeem, purchase




or otherwise acquire shares of any such junior stock in exchange for shares of
any stock of the Company ranking junior (either as to dividends or upon
dissolution, liquidation or winding up) to the Series A Preferred Stock; or

                           (iv) redeem or purchase or otherwise acquire for
consideration any shares of Series A Preferred Stock or any shares of stock
ranking on a parity with the Series A Preferred Stock, except in accordance with
a purchase offer made in writing or by publication (as determined by the Board
of Directors) to all holders of such shares upon such terms as the Board of
Directors, after consideration of the respective annual dividend rates and other
relative rights and preferences of the respective series and classes, shall
determine in good faith will result in fair and equitable treatment among the
respective series or classes.

                  (b) The Company shall not permit any subsidiary of the Company
to purchase or otherwise acquire for consideration any shares of stock of the
Company unless the Company could, under paragraph (a) of this Section 4,
purchase or otherwise acquire such shares at such time and in such manner.

         Section 5. REACQUIRED SHARES. Any shares of Series A Preferred Stock
purchased or otherwise acquired by the Company in any manner whatsoever shall be
retired and canceled promptly after the acquisition thereof. All such shares
shall upon their cancellation become authorized but unissued shares of Preferred
Stock and may be reissued as part of a new series of Preferred Stock, subject to
the conditions and restrictions on issuance set forth herein, in the Charter or
in any other articles supplementary creating a series of Preferred Stock or as
otherwise required by law.

         Section 6. LIQUIDATION, DISSOLUTION OR WINDING UP. Upon any
liquidation, dissolution or winding up of the Company, no distribution shall be
made (a) to the holders of shares of stock ranking junior (either as to
dividends or upon liquidation, dissolution or winding up) to the Series A
Preferred Stock unless, prior thereto, the holders of shares of Series A
Preferred Stock shall have received $100 per share, plus an amount equal to
accrued and unpaid dividends and distributions thereon, whether or not
authorized or declared, to the date of such payment, provided that the holders
of shares of Series A Preferred Stock shall be entitled to receive an aggregate
amount per share, subject to the provision for adjustment as hereinafter set
forth, equal to 1,000 times the aggregate amount to be distributed per share to
holders of shares of Common Stock, or (b) to the holders of shares of stock
ranking on a parity (either as to dividends or upon liquidation, dissolution or
winding up) with the Series A Preferred Stock, except distributions made ratably
on the Series A Preferred Stock and all such parity stock in proportion to the
total amounts to which the holders of all such shares are entitled upon such
liquidation, dissolution or winding up. In the event the Board of Directors of
the Company shall at any time authorize, declare or pay any dividend on the
combination or consolidation of the outstanding shares of Common Stock payable
in shares of Common Stock, or effect a subdivision or combination or
consolidation of the outstanding shares of Common Stock (by reclassification or
otherwise than by payment of a dividend in shares of Common Stock) into a
greater or lesser number of shares of Common Stock, then in each such case the
aggregate amount to which holders of shares of Series A Preferred Stock were
entitled immediately prior to such event under the proviso in




clause (a) of the preceding sentence shall be adjusted by multiplying such
amount by a fraction, the numerator of which is the number of shares of Common
Stock outstanding immediately after such event and the denominator of which is
the number of shares of Common Stock that were outstanding immediately prior to
such event.

         Section 7. MERGER, CONSOLIDATION, ETC. In case the Company shall enter
into any merger, consolidation, combination or other transaction in which the
shares of Common Stock are exchanged for or changed into other stock or
securities, cash and/or any other property, then in any such case each share of
Series A Preferred Stock shall at the same time be similarly exchanged or
changed into an amount per share (subject to the provision for adjustment
hereinafter set forth) equal to 1,000 times the aggregate amount of stock,
securities, cash and/or any other property (payable in kind), as the case may
be, into which or for which each share of Common Stock is changed or exchanged.
In the event the Board of Directors of the Company shall at any time (a)
authorize, declare or pay any dividend on the Common Stock payable in shares of
Common Stock or (b) effect a subdivision or combination or consolidation of the
outstanding shares of Common Stock (by reclassification or otherwise than by
payment of a dividend in shares of Common Stock) into a greater or lesser number
of shares of Common Stock, then in each such case the amount set forth in the
preceding sentence with respect to the exchange or change of shares of Series A
Preferred Stock shall be adjusted by multiplying such amount by a fraction, the
numerator of which is the number of shares of Common Stock outstanding
immediately after such event and the denominator of which is the number of
shares of Common Stock that were outstanding immediately prior to such event.

         Section 8. NO REDEMPTION. The shares of Series A Preferred Stock shall
not be redeemable.

         Section 9. RANKING . The Series A Preferred Stock shall rank, with
respect to the payment of dividends and the distribution of assets upon
liquidation, dissolution, winding up or otherwise, junior to all series of the
Company's Preferred Stock, unless the terms of any such series shall provide
otherwise.

         Section 10. AMENDMENT. The Charter, including these Articles
Supplementary establishing the rights and preferences of the Series A Preferred
Stock, shall not be amended in any manner which would materially alter or change
the preferences, voting powers or other rights or restrictions of the Series A
Preferred Stock, as set forth herein, so as to affect them adversely without the
affirmative vote of the holders of a majority of the outstanding shares of
Series A Preferred Stock, voting together as a single class.

         Section 11. RESTRICTIONS AND LIMITATIONS. Shares of Series A Preferred
Stock shall be subject to the restrictions and limitations set forth in Article
VI of the Charter.

         Section 12. FRACTIONAL SHARES. Series A Preferred Stock may be issued
in fractions of a share that shall entitle the holder, in proportion to such
holder's fractional shares, to exercise voting rights, receive dividends,
participate in distributions and to have the benefit of all other rights of
holders of Series A Preferred Stock.


         Section 13. NO CONVERSION RIGHTS. The holders of the Series A Preferred
Stock shall not have any rights to convert such shares into shares of any other
class or series of stock of the Company or into any other securities of, or
interest in, the Company.

         Section 14. NO PREEMPTIVE RIGHTS. No holder of shares of Series A
Preferred Stock shall have any preemptive or preferential right to subscribe
for, or to purchase, any additional shares of stock of the Company of any class
or series, or any other security of the Company which the Company may issue or
sell.

         SECOND: The Shares have been classified and designated by the Board of
Directors under the authority contained in the Charter.

         THIRD: These Articles Supplementary have been approved by the Board of
Directors in the manner and by the vote required by law.

         FOURTH: The undersigned Chief Executive Officer of the Company
acknowledges these Articles Supplementary to be the corporate act of the Company
and, as to all matters or facts required to be verified under oath, the
undersigned Chief Executive Officer acknowledges that to the best of his
knowledge, information and belief, these matters and facts are true in all
material respects and that this statement is made under the penalties for
perjury.





         IN WITNESS WHEREOF, the Company has caused these Articles Supplementary
to be executed under seal in its name and on its behalf by its Chief Executive
Officer and attested to by its Secretary on this 2nd day of July, 1999.


                          MACK-CALI REALTY CORPORATION



                          By: /s/  Mitchell E. Hersh   (SEAL)
                             ------------------------------------
                          Name:    Mitchell E. Hersh
                          Title:   Chief Executive Officer


Attest:


By: /s/  Brant B. Cali
    ----------------------------
Name:    Brant B. Cali
Title:   Assistant Secretary