X0306 4 2020-03-04 0 0001692830 Satsuma Pharmaceuticals, Inc. STSA 0001640645 O'Neil Thomas P. C/O SATSUMA PHARMACEUTICALS, INC. 400 OYSTER POINT BOULEVARD, SUITE 221 SOUTH SAN FRANCISCO CA 94080 0 1 0 0 Chief Financial Officer Stock Option (Right to Buy) 29 2020-03-04 4 A 0 60000 0.00 A 2030-03-04 Common Stock 60000 60000 D Twenty Five Percent (25%) of the shares subject to the option vest one year measured from March 4, 2020 and the remaining shares subject to the option vest in 36 successive, equal monthly installments thereafter, subject to Reporting Person's continued service relationship with the Issuer on each such vesting date. /s/ Thomas P. O'Neil 2020-03-06