X0306 4 2019-06-18 0 0001635282 Rimini Street, Inc. RMNI 0001717127 Grady Sebastian C/O 3993 HOWARD HUGHES PARKWAY SUITE 500 LAS VEGAS NV 89169 0 1 0 0 President Common Stock 2019-06-18 4 M 0 13652 1.1556 A 13752 D Common Stock 2019-06-18 4 S 0 13652 5.1804 D 100 D Common Stock 2019-06-19 4 M 0 160129 1.1556 A 160229 D Common Stock 2019-06-19 4 S 0 160129 5.1959 D 100 D Employee Stock Option (Right to Buy) 1.1556 2019-06-18 4 M 0 13652 0 D 2021-07-01 Common Stock 13652 205360 D Employee Stock Option (Right to Buy) 1.1556 2019-06-19 4 M 0 160129 0 D 2021-07-01 Common Stock 160129 45231 D The option exercises and sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person. The shares subject to the option are fully-vested and exercisable. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.18 to $5.19, inclusive. The Reporting Person undertakes to provide to Rimini Street, Inc., any security holder of Rimini Street, Inc., or the staff of the Securities and Exchange Commission, upon written request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote of this Form 4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.18 to $5.27, inclusive. The Reporting Person undertakes to provide to Rimini Street, Inc., any security holder of Rimini Street, Inc., or the staff of the Securities and Exchange Commission, upon written request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote of this Form 4. /s/Daniel B. Winslow, as Attorney-in-Fact 2019-06-19