Common use of Company Signature; Participant Electronic Acknowledgment Clause in Contracts

Company Signature; Participant Electronic Acknowledgment. An authorized representative has signed this Agreement below. By acknowledging acceptance of the terms of this Agreement through an electronic acknowledgment system established by the Company or its designated broker, the Participant agrees to be bound by all of the terms of this Agreement and the Plan. The Award will not become effective, and the Participant will therefore have no rights to or in the Award, until the Participant acknowledges his or her acceptance of the terms of this Agreement in the manner required by the Company. CUBIST PHARMACEUTICALS, INC. By: Name: Title: THE PARTICIPANT Name:

Company Signature; Participant Electronic Acknowledgment. An authorized representative has signed this the Agreement below. By acknowledging your acceptance of the terms of this Agreement through an electronic acknowledgment system established by the Company or its designated brokeragents, the Participant agrees you agree to be bound by all of the terms of this Agreement and the Plan. The Award will not become effective, and the Participant you will therefore have no not rights to or in the Award, until the Participant acknowledges his or her you acknowledge your acceptance of the terms of this Agreement in the manner required by the Company. CUBIST PHARMACEUTICALS, INC. By: Name: Title: THE PARTICIPANT Name:

Company Signature; Participant Electronic Acknowledgment. An authorized representative has signed this Agreement below. By acknowledging acceptance of the terms of this Agreement through an electronic acknowledgment system established by the Company or its designated broker, the Participant agrees to be bound by all of the terms of this Agreement and the Plan. The Award will not become effective, and the Participant will therefore have no not rights to or in the Award, until the Participant acknowledges his or her acceptance of the terms of this Agreement in the manner required by the Company. Executed as of the day of , 2013. Company CUBIST PHARMACEUTICALS, INC. By: Name: Title: THE PARTICIPANT Participant Name: Address:

Company Signature; Participant Electronic Acknowledgment. An authorized representative has signed this the Agreement below. By acknowledging Participant’s acceptance of the terms of this Agreement through an electronic acknowledgment system established by the Company or its designated broker, the Participant agrees to be bound by all of the terms of this Agreement and the Plan. The Award will not become effective, and the Participant will therefore have no rights to receive payment of his or in the her RSU Award, until the Participant acknowledges his or her acceptance of the terms of this Agreement in the manner required by the Company. CUBIST PHARMACEUTICALS, INC. By: Name: Title: THE PARTICIPANT Name: