Common use of TO PURCHASE PREFERRED STOCK Clause in Contracts

TO PURCHASE PREFERRED STOCK. For value received and subject to the provisions set forth in this warrant (this “Warrant”), PINNACLE VENTURES II EQUITY HOLDINGS, L.L.C. and its assigns are entitled to purchase from MASCOMA CORPORATION, a Delaware corporation (the “Company”): Shares of Preferred Stock: The number of Shares for which this Warrant is exercisable shall equal $450,000 divided by the Exercise Price (as adjusted pursuant to Section 7 hereof) Exercise Price: See Section 1(c) Term of Warrant: See Section 2 below. Warrant Date: December 30, 2008 The number of Shares for which this Warrant is exercisable and the Exercise Price may be adjusted as specified in Section 5.

TO PURCHASE PREFERRED STOCK. For value received and subject to the provisions set forth in this warrant (this “Warrant”), PINNACLE VENTURES II EQUITY HOLDINGS, L.L.C. and its assigns are entitled to purchase from MASCOMA CORPORATION, a Delaware corporation (the “Company”): Shares of Series B Preferred Stock: The number of Shares for which this Warrant is exercisable shall equal $450,000 the Warrant Coverage divided by the Exercise Price (as adjusted pursuant to Section 7 hereof) Exercise Price: See Section 1(c) $2.67 Term of Warrant: See Section 2 below. Warrant Date: December 30February 5, 2008 The number of Shares for which this Warrant is exercisable and the Exercise Price may be adjusted as specified in Section 5.

TO PURCHASE PREFERRED STOCK. For value received and subject to the provisions set forth in this warrant (this “Warrant”), PINNACLE VENTURES II EQUITY HOLDINGS, L.L.C. and its assigns are entitled to purchase from MASCOMA CORPORATION, a Delaware corporation (the “Company”): Shares of Preferred Stock: The number of Shares for which this Warrant is exercisable shall equal $450,000 the Warrant Coverage divided by the Exercise Price (as adjusted pursuant to Section 7 hereof) Exercise Price: See Section 1(c) Term of Warrant: See Section 2 below. Warrant Date: December 30February 5, 2008 The number of Shares for which this Warrant is exercisable and the Exercise Price may be adjusted as specified in Section 5.

TO PURCHASE PREFERRED STOCK. For value received and subject to the provisions set forth in this warrant (this “Warrant”), PINNACLE VENTURES II EQUITY HOLDINGS, L.L.C. and its assigns are entitled to purchase from MASCOMA CORPORATION, a Delaware corporation (the “Company”): Shares of Series B Preferred Stock: The number of Shares for which this Warrant is exercisable shall equal $450,000 the Warrant Coverage divided by the Exercise Price (as adjusted pursuant to Section 7 hereof) Exercise Price: See Section 1(c) $2.67 Term of Warrant: See Section 2 below. Warrant Date: December 30January , 2008 The number of Shares for which this Warrant is exercisable and the Exercise Price may be adjusted as specified in Section 5.