X0306 4 2020-09-22 0 0001673772 RAPT Therapeutics, Inc. RAPT 0001600420 COLUMN GROUP II, LP 1700 OWENS STREET SUITE 500 SAN FRANCISCO CA 94158 0 0 1 0 0001645333 Column Group II GP, LP 1700 OWENS STREET SUITE 500 SAN FRANCISCO CA 94158 0 0 1 1 General Partner 0001707230 PONOI CAPITAL, LP 1700 OWENS STREET SUITE 500 SAN FRANCISCO CA 94158 0 0 1 0 0001720702 Ponoi Management, LLC 1700 OWENS STREET SUITE 500 SAN FRANCISCO CA 94158 0 0 1 1 General Partner 0001732601 Ponoi Capital II, LP 1700 OWENS STREET SUITE 500 SAN FRANCISCO CA 94158 0 0 1 0 0001746488 Ponoi II Management, LLC 1700 OWENS STREET SUITE 500 SAN FRANCISCO CA 94158 0 0 1 1 General Partner 0001783952 Column Group II Management, LP 1700 OWENS STREET, SUITE 500 SAN FRANCISCO CA 94158 0 0 1 0 0001614186 Kutzkey Tim 1700 OWENS STREET SUITE 500 SAN FRANCISCO CA 94158 0 0 1 1 Managing Partner 0001182464 GOEDDEL DAVID V 1700 OWENS STREET SUITE 500 SAN FRANCISCO CA 94158 0 0 1 1 Managing Partner Common Stock 2020-09-22 4 S 0 608000 30.85 D 3835679 D Common Stock 1599417 D Common Stock 145401 D Common Stock 50000 D The securities are directly held by The Column Group II, LP ("TCG II LP"), and indirectly held by The Column Group II GP, LP ("TCG II GP"), the general partner of TCG II LP. The managing partners of TCG II GP are David Goeddel and Peter Svennilson. The managing partners of TCG II GP may be deemed to have voting and investment power with respect to such shares. TCG II GP and each individual managing partner disclaims beneficial ownership of these shares, except to the extent of their respective pecuniary interest in such shares. The securities are directly held by Ponoi Capital, LP ("Ponoi LP"), and indirectly held by Ponoi Management, LLC ("Ponoi LLC"), the general partner of Ponoi LP. The managing partners of Ponoi LLC are David Goeddel, Peter Svennilson and Tim Kutzkey. The managing partners of Ponoi LLC may be deemed to have voting and investment power with respect to such shares. Each individual managing partner disclaims beneficial ownership of these shares, except to the extent of his pecuniary interest in such shares. The securities are directly held by Ponoi Capital II, LP ("Ponoi II LP"), and indirectly held by Ponoi II Management, LLC ("Ponoi II LLC"), the general partner of Ponoi II LP. The managing partners of Ponoi II LLC are David Goeddel, Peter Svennilson and Tim Kutzkey. The managing partners of Ponoi II LLC may be deemed to have voting and investment power with respect to such shares. Each individual managing partner disclaims beneficial ownership of these shares, except to the extent of his pecuniary interest in such shares. The securities are directly held by The Column Group II Management, LP ("TCGM II LP"). Under the partnership agreement of TCG II LP, TCGM II LP is deemed to hold the securities for the economic benefit of TCG II LP. TCG II LP may be deemed to have an indirect pecuniary interest in the securities. The managing partners of TCGM II LP are David Goeddel and Peter Svennilson. The managing partners of TCGM II LP may be deemed to have voting and investment power with respect to such securities. TCGM II LP, TCG II LP and each individual managing partner disclaims beneficial ownership of these securities, except to the extent of their pecuniary interest therein. /s/ Jennifer J. Carlson, Attorney-in-fact 2020-09-23