X0303 4 2010-03-03 0001043121 BOSTON PROPERTIES LTD PARTNERSHIP N/A 0001237418 FRENKEL JACOB A C/O JP MORGAN CHASE INTERNATIONAL 270 PARK AVENUE NEW YORK NY 10017 1 0 0 0 LTIP Units 2010-03-03 4 A 0 509 .25 A Common OP Units 509 509 D Issued as long term incentive compensation pursuant to Boston Properties Inc.'s, the Issuer's general partner, equity based compensatory programs. Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit. The LTIP Units vest over two years with 50% vesting on March 3, 2011 and 50% vesting on March 3, 2012. /s/ Kelli A. DiLuglio, as Attorney-in-Fact 2010-03-04