Exhibit 99.1

MACK - CALI REALTY CORPORATION

NEWS RELEASE

For Immediate Release

MACK-CALI REALTY CORPORATION COMPLETES COMMON STOCK OFFERING

Edison, New Jersey—February 18, 2011—Mack-Cali Realty Corporation (the “Company”) (NYSE: CLI) announced that it completed a public offering of 7,187,500 shares of common stock today at a public offering price per share of $33.00, including 937,500 shares issued and sold to the underwriters to cover overallotments.  BofA Merrill Lynch, Deutsche Bank Securities and J.P. Morgan acted as the joint book-running managers.  BNY Mellon Capital Markets, LLC, Capital One Southcoast, Citi, Comerica Securities, Mitsubishi UFJ Securities, Piper Jaffray, PNC Capital Markets LLC, RBS, Scotia Capital and SunTrust Robinson Humphrey acted as co-managers.

The net proceeds to the Company from the offering after deducting underwriting commissions and discounts and offering expenses were approximately $227.4 million.  The Company plans to use the net proceeds from the offering to repay borrowings under its unsecured revolving credit facility and for general corporate purposes.

This press release shall not constitute an offer to sell or the solicitation of an offer to buy any securities nor shall there be any sale of these securities in any state in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state.

Copies of the final prospectus supplement and accompanying prospectus relating to these securities may be obtained by contacting BofA Merrill Lynch, 4 World Financial Center, New York, New York 10080, Attn: Prospectus Department or email dg.prospectus_requests@baml.com, Deutsche Bank Securities, Attention: Prospectus Department, Harborside Financial Center, 100 Plaza One, Jersey City, NJ 07311-3988, or by calling (800) 503-4611, or by e-mail at prospectus.cpdg@db.com or J.P. Morgan, Broadridge Financial Solutions, 1155 Long Island Avenue, Edgewood, NY 11717, or by calling (866) 803 9204.

Mack-Cali Realty Corporation is a fully-integrated, self-administered, self-managed real estate investment trust (REIT) providing management, leasing, development, construction, and other tenant-related services for its class A real estate portfolio.

Statements made in this press release may be forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. Forward-looking statements can be identified by the use of

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words such as “may,” “will,” “plan,” “should,” “expect,” “anticipate,” “estimate,” “continue,” or comparable terminology. Such forward-looking statements are inherently subject to certain risks, trends and uncertainties, many of which the Company cannot predict with accuracy and some of which the Company might not even anticipate, and involve factors that may cause actual results to differ materially from those projected or suggested. Readers are cautioned not to place undue reliance on these forward-looking statements and are advised to consider the factors listed above together with the additional factors under the heading “Disclosure Regarding Forward-Looking Statements” and “Risk Factors” in the Company’s Annual Reports on Form 10-K, as may be supplemented or amended by the Company’s Quarterly Reports on Form 10-Q. The Company assumes no obligation to update or supplement forward-looking statements that become untrue because of subsequent events, new information or otherwise.

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