X0303 4 2010-02-11 0001043121 BOSTON PROPERTIES LTD PARTNERSHIP N/A 0001217093 BURT FRANK D C/O BOSTON PROPERTIES, INC. 800 BOYLSTON STREET BOSTON MA 02199 0 1 0 0 Senior Vice President of GP Common OP Units 2010-02-11 4 M 0 4121 0 A 4121 D Common OP Units 2010-02-11 4 M 0 4121 0 D 0 D Common OP Units 4000 I By Spouse LTIP Units 2010-02-11 4 M 0 4121 .25 D Common Stock 4121 6559 D 4,121 of the Reporting Person's LTIP Units were converted into common units of limited partnership interest (Common OP Units) in the Issuer by the Reporting Person and the Common OP Units were immediately redeemed for an equal number of shares of Common Stock of Boston Properties, Inc., the Issuer's sole general partner, in accordance with the Issuer's Partnership Agreement. Issued as long term incentive compensation pursuant to Boston Properties, Inc.'s 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 OP Unit. /s/ Kelli A. DiLuglio, Attorney-in-Fact 2010-02-16