X0306 4 2018-05-07 0 0001488613 Foundation Medicine, Inc. FMI 0001696923 Cox Troy C/O FOUNDATION MEDICINE, INC. 150 SECOND STREET CAMBRIDGE MA 02141 1 1 0 0 Chief Executive Officer Common Stock 2018-05-07 4 S 0 7063 70.01 D 245627 D Represents the number of shares required to be sold by the reporting person to cover the tax withholding obligation in connection with the vesting of restricted stock units on May 6, 2018. This sale is mandated by the Issuer's election under its equity incentive plans to require the reporting person to fund this tax withholding obligation by completing a "sell to cover" transaction with a brokerage firm designated by the Issuer. This sale does not represent a discretionary trade by the reporting person. Robert W. Hesslein, Attorney-in-Fact for Troy Cox 2018-05-09