X0306 4 2018-04-23 0 0001718108 Surface Oncology, Inc. SURF 0001479386 Viswanathan Ravi 1954 GREENSPRING DRIVE SUITE 600 TIMONIUM MD 21093 0 0 1 0 Common Stock 2018-04-23 4 C 0 3179544 A 3179544 I See Note 2 Common Stock 2018-04-23 4 P 0 133333 15.00 A 3312877 I See Note 2 Series A Preferred Stock 2018-04-23 4 C 0 6995000 D Common Stock 3179544 0 I See Note 2 The Series A Preferred Stock automatically converted into the Issuer's common stock on a 2.2-for-1 basis at the closing of the Issuer's initial public offering without payment or further consideration and had no expiration date. The Reporting Person is a director of NEA 14 GP, LTD, which is the sole general partner of NEA Partners 14, L.P. ("NEA Partners 14"). NEA Partners 14 is the sole general partner of New Enterprise Associates 14, L.P. ("NEA 14"), which is the direct beneficial owner of the securities. The Reporting Person disclaims beneficial ownership, within the meaning of Section 16 of the Securities Exchange Act of 1934, as amended, or otherwise of such portion of the NEA 14 shares in which the Reporting Person has no pecuniary interest. /s/ Sasha Keough, attorney-in-fact 2018-04-23