X0609 4 2026-09-20 0 0001635282 Rimini Street, Inc. RMNI 0001717500 Rowe David W. false C/O 1700 S. PAVILION CENTER DRIVE SUITE 330 LAS VEGAS NV 89135 0 1 0 0 EVP & Chief Marketing Officer 0 Common Stock 2026-09-20 2026-09-21 4 M 0 13333 0 A 511452 D Common Stock 2026-09-21 4 S 0 4884 4.36 D 506568 D Restricted Stock Units 2026-09-20 2026-09-21 4 M 0 13333 0 D Common Stock 13333 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 September 20, 2024, the Reporting Person was granted 40,000 Restricted Stock Units, one-third of which vested on September 20, 2025 and one-third of which vested on September 20, 2026 (with a deemed execution date of Monday, September 21, 2026). The remaining one-third will vest on September 20, 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 vesting date. /s/ Celeste Rasmussen Peiffer, as Attorney-in-Fact 2026-09-23