Extension Letter Agreement to DuPont/Nanosys Collaboration Agreement

Summary

Nanosys, Inc. and DuPont have agreed to continue their collaboration beyond the original three-month term set in their prior agreement, which commenced on May 17, 2004. Both parties will work together to develop new Statements of Work that will define future tasks and funding. This letter, signed by both parties, confirms their mutual intent to extend the collaboration and sets the process for determining ongoing project details.

EX-10.15.2 3 f97636a2exv10w15w2.txt EXHIBIT 10.15.2 EXHIBIT 10.15.2 [NANOSYS LETTERHEAD] 2625 Hanover Street, Palo Alto, CA 94304 ###-###-####, 650 ###-###-#### fax, www.nanosysinc.com May 17, 2004 Dr. James Romine Director DuPont Materials Science & Engineering Experimental Station 328/407 Wilmington, DE ###-###-#### Re: DuPont/Nanosys Collaboration Agreement Dear Jim: The following represents our understanding of the status of our agreement with DuPont (the "Agreement"): Pursuant to section 10.2, of the Agreement, the Agreement is scheduled to terminate three months after the Commencement Date of the Agreement, which, as amended in Amendment A to the Agreement, is May 17th, 2004, unless the Parties have agreed in writing to continue the collaboration under the Agreement. At present, both Parties hereby agree to continue the Collaboration under the Agreement. As a next step, the Parties will work expeditiously together to formulate mutually acceptable Statements of Work, based on the learnings to date. These Statements of Work will provide the sole basis for determining the appropriate timing and level of ongoing funding for future tasks. Please indicate DuPont's agreement by signing and returning this letter to my attention via facsimile at ###-###-####. Please feel free to call me if you have any questions. Sincerely, /s/ CALVIN CHOW - --------------- Calvin Chow CEO, Nanosys, Inc. Accepted and agreed: By: /s/ JAMES C. ROMINE ------------------- Name: James C. Romine ------------------- Title: Science Director ------------------- Date: 5/20/04 -------------------