Filed Pursuant to Rule 433
Registration Statement No. 333-173749-01
Preliminary Prospectus Supplement Dated April 10, 2012 and
Prospectus Supplement dated April 27, 2011

$300,000,000 4.500% NOTES DUE 2022
Issuer: | | Mack-Cali Realty, L.P. |
Type: | | SEC Registered |
Size: | | $300,000,000 |
Maturity: | | April 18, 2022 |
Coupon (Interest Rate): | | 4.500% |
Benchmark Treasury: | | 2.000% due February 15, 2022 |
Benchmark Treasury Price and Yield: | | 100-07 / 1.975% |
Spread to Benchmark Treasury: | | 2.55% (255 basis points) |
Yield to Maturity: | | 4.525% |
Expected Ratings* (Moody’s / S&P): | | Baa2 / BBB |
Interest Payment Dates: | | October 15 and April 15, commencing October 15, 2012 |
Day Count Convention: | | 30 / 360 |
Redemption Provision: | | Callable at any time at a Make-Whole Premium of comparable maturity U.S. Treasury plus 40 bps; provided, however, if the notes are redeemed on or after 90 days prior to the maturity date, the Make-Whole Premium will be zero |
Initial Price to Public: | | 99.801% plus accrued interest if settlement occurs after April 19, 2012 |
Underwriting Fees: | | 0.65% |
Total Proceeds to Mack-Cali | | 99.151% ($297,453,000) |
Settlement Date: | | T+7; April 19, 2012 |
Denominations: | | $2,000 x $1,000 |
CUSIP; ISIN: | | 55448QAQ9; US55448QAQ91 |
Joint Book-Running Managers: | | Citigroup Global Markets Inc. J.P. Morgan Securities LLC Merrill Lynch, Pierce, Fenner & Smith Incorporated |
Co-Managers: | | BB&T Capital Markets, a division of Scott & Stringfellow, LLC |
| | BNY Mellon Capital Markets, LLC |
| | Capital One Southcoast, Inc. |
| | Comerica Securities, Inc. |
| | Deutsche Bank Securities Inc. |
| | Mitsubishi UFJ Securities (USA), Inc. |
| | PNC Capital Markets LLC |
| | RBS Securities Inc. |
| | SunTrust Robinson Humphrey, Inc. |
| | TD Securities (USA) LLC |
| | U.S. Bancorp Investments, Inc. |
| | Wells Fargo Securities, LLC |
This communication is intended for the sole use of the person to whom it is provided by the issuer.
*Ratings may be changed, suspended or withdrawn at any time and are not a recommendation to buy, hold or sell any security.
The issuer has filed a registration statement (including a prospectus and a preliminary prospectus supplement) with the Securities and Exchange Commission for the offering to which this communication relates. Before you invest, you should read the prospectus and the preliminary prospectus supplement in that registration statement and other documents the issuer has filed with the Securities and Exchange Commission for more complete information about the issuer and this offering. You may get these documents for free by visiting EDGAR on the Securities and Exchange Commission’s website at www.sec.gov. Alternatively, the issuer, any underwriter or any dealer participating in the offering will arrange to send you the prospectus and preliminary prospectus supplement if you request it by calling Citigroup Global Markets Inc., toll-free at 1-877-858-5407, Merrill Lynch, Pierce, Fenner & Smith Incorporated toll-free at 1-800-294-1322 and J.P. Morgan Securities LLC collect at 1-212-834-4533.
ANY LEGENDS, DISCLAIMERS OR OTHER NOTICES THAT MAY APPEAR BELOW ARE NOT APPLICABLE TO THIS COMMUNICATION AND SHOULD BE DISREGARDED. SUCH DISCLAIMERS OR OTHER NOTICES WERE AUTOMATICALLY GENERATED AS A RESULT OF THIS COMMUNICATION BEING SENT VIA BLOOMBERG OR ANOTHER SYSTEM.