X0306 4 2011-12-16 0 0001121702 METABOLIX, INC. MBLX 0001377832 Strobeck Matthew C/O METABOLIX, INC. 21 ERIE STREET CAMBRIDGE MA 02139 1 0 0 0 Common Stock 2013-11-27 4 P 0 20000 0.7917 A 625000 D Common Stock 2013-11-29 4 P 0 80000 1.0574 A 705000 D Common Stock 89695 I By spouse as custodian UGMA for children Common Stock 40919 I As trustee Represents the weighted average purchase price for the shares purchased. Purchase prices for this transaction range from $0.7750 to $0.8100. The reporting person undertakes to provide, upon request by the Commission staff, or a security holder of the Issuer, for full information regarding the number of shares purchased at each separate price. Represents the weighted average purchase price for the shares purchased. Purchase prices for this transaction range from $1.0410 to $1.0780. The reporting person undertakes to provide, upon request by the Commission staff, or a security holder of the Issuer, for full information regarding the number of shares purchased at each separate price. The reporting person disclaims beneficial ownership of these securities. These shares are held indirectly by a trust for the benefit of the reporting person's children. The reporting person is a trustee of the trust. The reporting person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest in them. /s/ Sarah P. Cecil, attorney-in-fact 2013-12-02