X0306 4 2015-04-07 1 0001488613 Foundation Medicine, Inc. FMI 0001032454 BYERS BROOK H C/O FOUNDATION MEDICINE, INC. 150 SECOND STREET CAMBRIDGE MA 02141 1 0 0 0 Common Stock 2015-04-07 4 U 0 12049 50.00 D 2882 I Byers Family Trust Common Stock 2015-04-07 4 U 0 791 50.00 D 190 I The Hampton Trust Common Stock 2015-04-07 4 U 0 791 50.00 D 190 I The Austin 1999 Trust Common Stock 2015-04-07 4 U 0 2100328 50.00 D 502309 I See footnote Common Stock 2015-04-07 4 U 0 177684 50.00 D 42495 I See footnote The amount reported represents the estimated number of shares sold by the reporting person in connection with the tender offer for shares of Common Stock of the Issuer (the "Tender Offer") by Roche Holdings, Inc. ("Roche"). Roche will purchase only a prorated portion of the shares properly tendered by each tendering stockholder. Based on a preliminary count reported by Roche, the preliminary proration factor for the Tender Offer is approximately 80.7%. If necessary, an amended Form 4 will be filed to report the number of shares actually sold by the reporting person in connection with the Tender Offer once the final proration factor is determined. The shares are directly held by Kleiner Perkins Caufield & Byers XIV, LLC ("KPCB XIV"). All shares are held for convenience in the name of "KPCB Holdings, Inc., as nominee". The managing member of KPCB XIV is KPCB XIV Associates, LLC ("XIV Associates"). The voting and dispositive control over the shares is shared by individual managing members of XIV Associates, none of whom has veto power. The shares are directly held by KPCB XIV Founders Fund, LLC ("KPCB XIV FF"). All shares are held for convenience in the name of "KPCB Holdings, Inc., as nominee". The managing member of KPCB XIV FF is XIV Associates. The voting and dispositive control over the shares is shared by individual managing members of XIV Associates, none of whom has veto power. The Reporting Person is a managing member of XIV Associates. The Reporting Person disclaims beneficial ownership of these shares except to the extent of any pecuniary interest therein, and the filing of this report is not an admission that he is the beneficial owner of these shares for purposes of Section 16 or for any other purpose. /s/ Paul Vronsky as Attorney-In-Fact for Brook Byers 2015-04-09