X0306 4 2020-04-01 0 0001692830 Satsuma Pharmaceuticals, Inc. STSA 0001286642 ALBRECHT DETLEF C/O SATSUMA PHARMACEUTICALS, INC. 400 OYSTER POINT BOULEVARD, SUITE 221 SOUTH SAN FRANCISCO CA 94080 0 1 0 0 Chief Medical Officer Common Stock 2020-04-01 4 M 0 200 4.56 A 20412 D Common Stock 2020-04-01 4 S 0 200 20.2450 D 20012 D Stock Option (Right to Buy) 4.56 2020-04-01 4 S 0 200 0 D 2029-05-16 Common Stock 200 73268 D Transaction made pursuant to a 10b5-1 trading plan adopted by the Reporting Person. The transaction was executed in multiple trades in prices ranging from $20.23 to $20.26, inclusive. The price reported in Column 4 above reflects the weighted average sale price. The reporting person hereby undertakes to provide to the Securities and Exchange Commission staff, the Issuer, or a security holder of the Issuer, upon request, full information regarding the number of shares sold at each respective price within the range set forth in this footnote. The option vest and become exercisable in successive, equal monthly installments over four years measured from May 15, 2019, subject to Reporting Person's continued service relationship with the Issuer on each such vesting date. /s/ Thomas P. O'Neil as Attorney in Fact for Detlef Albrecht, M.D. 2020-04-03