$RMNI

Rimini Street, Inc. (RMNI) filed an SEC Form 8-K — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers. ITEM 5.02 DEPARTURE OF DIRECTORS OR CERTAIN OFFICERS; ELECTION OF DIRECTORS; APPOINTMENT OF CERTAIN OFFICERS; COMPENSATORY ARRANGEMENTS OF CERTAIN OFFICERS. Effective October 1, 2026, the Compensation Committee of the Board of Directors of Rimini Street, Inc. (the “ Company ”) ap

Rimini Street will provide SAP ERP maintenance services to Yonsei University Health System, aiming to cut costs by 50% and improve technical support. The system supports HR, payroll, and administrative functions. Rimini guarantees quick response times for critical incidents. Yonsei plans to reinvest savings into AI and digital health projects.

Rimini Street (RMNI) and Datacom partnered to expand Oracle and SAP support, offering up to 90% savings on enterprise software support costs. The collaboration aims to accelerate AI adoption and IT optimization across ANZ, leveraging Rimini Street's third-party support and Datacom's market presence.

Rimini Street, Inc. (RMNI) filed an SEC Form 8-K — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers. UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 September 14, 2026 (September 14, 2026) Date of Report (date of earliest event reported) Rimini Street, Inc. (Exa

Rimini Street, Inc. (RMNI) filed an SEC Form 8-K — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers. UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 September 8, 2026 (September 8, 2026) Date of Report (date of earliest event reported) Rimini Street, Inc. (Exact

Rimini Street (RMNI) announced that VIVERE Group, an Indonesian company listed as PT Gema Graham Sarana Tbk (GEMA), has chosen Rimini Support for SAP to maintain business continuity and support its SAP ECC environment. This partnership allows VIVERE to focus on digital transformation and avoid a costly S/4HANA upgrade, according to the companies.

Rimini Street (RMNI) CEO Seth A. Ravin sold 322,707 shares indirectly via the SAR Trust from September 2-4, 2026, at weighted average prices between $5.02 and $5.18 per share. No pre-arranged trading plan was used. Ravin directly holds 882,900 shares post-transaction.

Ravin Seth A. (President, CEO & Chairman) sold 322,707 indirectly-held shares of Rimini Street, Inc. (RMNI) at an average of $5.13 ($5.02–$5.18, $1.66M total) across 3 trades over 2026-09-02 to 2026-09-04.

Rimini Street (RMNI) shareholder SAR TRUST plans to sell 89,639 shares under Rule 144 via Morgan Stanley, with sales to be listed on NASDAQ from September 4, 2026. SAR TRUST previously sold 41,366 shares for $213,527.16 on September 3, 2026 and 191,702 shares for $992,115.36 on September 2, 2026.

Rimini Street (RMNI) repurchased $5M in shares at $5.16 each and prepaid $5M in debt, totaling $30.9M in capital return and balance sheet optimization for the fiscal year-to-date. The company aims to create long-term value for shareholders and strengthen its financial position.