X0202 4 2007-06-29 0 0001121702 METABOLIX, INC. MBLX 0001083925 LASERSOHN JACK W C/O METABOLIX, INC. 21 ERIE STREET CAMBRIDGE MA 02139 1 0 0 0 Common Stock 2007-06-29 4 S 0 230052 24.5 D 228127 I By Vertical Fund I, L.P. Common Stock 2007-06-29 4 S 0 123448 24.5 D 275145 I By Vertical Fund II, L.P. Transaction made pursuant to a trading plan established under Rule 10b5-1. The Reporting Person is a general partner of The Vertical Group, L.P., the general partner of Vertical Fund I, L.P. and Vertical Fund II, L.P., and he disclaims beneficial ownership of the securities except to the extent of his indirect pecuniary intrest therein. This report shall not be deemed an admission that the Reporting Person is the beneficial owner of the securities for the purposes of Section 16 or for any other purposes. /s/ Sarah P. Cecil, attorney-in-fact 2007-07-02