On October 29, 2009, Mack-Cali Realty Corporation (the "Company") issued a press release announcing its financial results for the third quarter 2009. A copy of the press release is attached hereto as Exhibit 99.2.

For the quarter ended September 30, 2009, the Company hereby makes available supplemental data regarding its operations. The Company is attaching such supplemental data as Exhibit 99.1 to this Current Report on Form 8-K.

In connection with the foregoing, the Company hereby furnishes the following documents:

(d) Exhibits

Exhibit Number   Exhibit Title

99.1             Third Quarter 2009 Supplemental Operating
                 and Financial Data.

99.2             Third Quarter 2009 earnings press release of
                 Mack-Cali Realty Corporation dated October
                 29, 2009.

The information included in this Current Report on Form 8-K (including the exhibits hereto) is being furnished under Item 2.02, "Results of Operations and Financial Condition," Item 7.01, "Regulation FD Disclosure" and Item 9.01 "Financial Statements and Exhibits" of Form 8-K. As such, the information (including the exhibits) herein shall not be deemed to be "filed" for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or otherwise subject to the liabilities of that Section, nor shall it be incorporated by reference into a filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing. This Current Report (including the exhibits hereto) will not be deemed an admission as to the materiality of any information required to be disclosed solely to satisfy the requirements of Regulation FD.