X0206 3 2020-01-29 0 0001701541 Black Diamond Therapeutics, Inc. BDTX 0001237289 SANDELL SCOTT D 1954 GREENSPRING DRIVE SUITE 600 TIMONIUM MD 21093 0 0 1 0 Series B Preferred Stock Common Stock 2176957 I See footnote Series C Preferred Stock Common Stock 471800 I See footnote Each share of Series B Preferred Stock is convertible into shares of the Issuer's Common Stock on a one-for-3.01581 basis. Upon the closing of the Issuer's initial public offering, all shares of Series B Preferred Stock will convert into the number of shares of Common Stock of the Issuer shown in column 3. The Series B Preferred Stock has no expiration date. The Reporting Person is a manager of NEA 16 GP, LLC, ("NEA 16 GP") which is the sole general partner of NEA Partners 16, L.P. ("NEA Partners 16"). NEA Partners 16 is the sole general partner of New Enterprise Associates 16, L.P. ("NEA 16"), which is the direct beneficial owner of the shares. 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 shares held by NEA 16 in which the Reporting Person has no pecuniary interest. Each share of Series C Preferred Stock is convertible into shares of the Issuer's Common Stock on a one-for-3.01581 basis. Upon the closing of the Issuer's initial public offering, all shares of Series C Preferred Stock will convert into the number of shares of Common Stock of the Issuer shown in column 3. The Series C Preferred Stock has no expiration date. /s/ Sasha Keough, attorney-in-fact 2020-01-29