X0306 4 2016-01-27 0 0001121702 METABOLIX, INC. MBLX 0001377832 Strobeck Matthew C/O METABOLIX, INC. 21 ERIE STREET CAMBRIDGE MA 02139 1 0 0 0 Common Stock 2016-01-27 4 J 0 12500 0 D 0 D Common Stock 1486136 D Common Stock 710366 I Owned by Birchview Fund LLC Common Stock 66664 I Owned as custodian Common Stock 14949 I By spouse as custodian UGMA for children Common Stock 6819 I As trustee On January 27, 2016, Mr. Strobeck abandoned and relinquished all rights and interests in the restricted stock units ("RSUs") granted to him on September 10, 2015 pursuant to the Issuer's 2014 Stock Option and Incentive Plan. Mr. Strobeck did not receive any payment or other consideration for the cancellation of the RSUs. Each RSU represented a contingent right to receive one share of the Issuer's common stock. None of the RSUs were vested at the date of relinquishment. Mr. Strobeck is the sole member of Birchview Capital GP, LLC (the "GP"), the general partner of Birchview Capital, LP (the "Investment Manager"), which is the investment Manager of the Fund) and the sole member of Birchview Partners, LLC (the "Manager"), which is a member of the Fund. Mr. Strobeck disclaims Section 16 beneficial ownership of the shares of Common Stock held by the Fund (collectively, the "Fund Shares") and this report shall not be deemed an admission that such reporting person is the beneficial owner of such Fund Shares, except to the extent of his pecuniary interest, if any, in the Fund Shares by virtue of his membership interest in the GP. The reported securities are held in accounts for minor children for which Mr. Strobeck serves as a custodian. Mr. Strobeck disclaims beneficial ownership of these securities, and this report shall not be deemed an admission that he is the beneficial owner of such securities for purposes of Section 16 or for any other purpose. Mr. Strobeck disclaims beneficial ownership of these securities, and this report shall not be deemed an admission that he is the beneficial owner of such securities for purposes of Section 16 or for any other purpose. These shares are held indirectly by a trust for the benefit of the reporting person's children. Mr. Strobeck is a trustee of the trust. Mr. Strobeck disclaims beneficial ownership of these securities except to the extent of his pecuniary interest in them. /s/ Sarah P. Cecil, attorney-in-fact 2016-01-28