Metabolix to Conduct Webcast of Its Second Quarter Fiscal Year 2014 Earnings Call

CAMBRIDGE, Mass., Aug. 4, 2014

The Company will host a conference call on the same day at 4:30 p.m. (ET), during which time senior management will provide an update on the business and answer questions from the investment community.

A live webcast of the call with slides can be accessed through the "Investors" section of the Company's website at www.metabolix.com. To participate in the call, dial toll-free (877) 709-8155 or (201) 689-8881 (international). Interested parties unable to participate in the live call may access an archived version of the webcast on the Company's website. To listen to a telephonic replay of the conference call, dial toll-free (877) 660-6853 or (201) 612-7415 (international) and enter pass code 13588304. The replay will be available beginning at 7:30 p.m. (ET) on Wednesday, August 6, 2014 and will last through 11:59 p.m. (ET) on Wednesday, August 20, 2014. In addition, the webcast will be archived on the Company's website in the investor relations section.

About Metabolix

Metabolix, Inc. is an advanced biomaterials company focused on sustainable solutions for the plastics and chemicals industries. The Company is developing and commercializing a family of high-performance biopolymers targeted at applications for performance additives that can improve performance and/or reduce cost in other material systems such as PVC, PLA and coated paper. Metabolix also is developing platforms for biobased chemicals based on its novel "FAST" recovery process and for co-producing plastics, chemicals and energy from crops. Metabolix has established an industry-leading intellectual property portfolio that, together with its knowledge of advanced industrial practice, provides a foundation for industry collaborations. For more information, please visit www.metabolix.com.

(MBLX-E)

Metabolix Contact:
Lynne H. Brum, (617) 682-4693, LBrum@metabolix.com