X0508 4 2025-11-13 0 0001635282 Rimini Street, Inc. RMNI 0001717514 Maddock Kevin C/O 1700 S. PAVILION CENTER DRIVE SUITE 330 LAS VEGAS NV 89135 0 1 0 0 EVP,ChiefRecurringRev.Officer 0 Common Stock 2025-11-13 4 M 0 6666 0 A 155181 D Common Stock 2025-11-13 4 S 0 2451 3.8246 D 152730 D Restricted Stock Units 2025-11-13 4 M 0 6666 0 D Common Stock 6666 13334 D Reported transaction is an automatically-triggered "sell-to-cover" transaction related to the payment of withholding tax obligations pursuant to the Issuer's policy for tax withholdings associated with Restricted Stock Unit vesting events. The Reporting Person did not initiate the sale. Each Restricted Stock Unit represents a contingent right to receive one share of the Issuer's Common Stock upon vesting. On November 13, 2024, the Reporting Person was granted 20,000 Restricted Stock Units, one-third of which vested on November 13, 2025. The remaining two-thirds vest ratably on November 13, 2026 and November 13, 2027, generally subject to the Reporting Person continuing to be a Service Provider (as such term is defined in the Issuer's 2013 Equity Incentive Plan) through the applicable vesting date. /s/ Celeste Rasmussen Peiffer, as Attorney-in-Fact 2025-11-17