Investor Presentation

Rimini Street Who We Are Rimini Street (Nasdaq: RMNI) is a global provider of end-to-end enterprise software support, products and services. The Company offers a comprehensive family of unified solutions to run, manage, support, customize, configure, connect, protect, monitor, and optimize clients' enterprise application, database, and technology software platforms. We founded Rimini Street to disrupt and redefine the enterprise software support market by developing and delivering innovative new solutions that filled a then-unmet need in the enterprise software market. We became and remain the leading independent software support provider for Oracle and SAP products based on both the number of active clients supported and recognition by industry analyst firms. Over the years, as our reputation for technical capability, value, innovation, responsiveness and trusted reliability grew, clients and prospects began asking us to expand the scope of our support, product and service offerings to meet other current and evolving needs and opportunities related to their enterprise software. We also heard from prospects and clients that their goals include reducing the number of IT vendors to more manageable numbers from a governance perspective, with a desire to select vendors who can provide a wider scope of IT services and become true trusted partners. To meet the needs of our clients and prospects and to service what we believe is a significantly expanded addressable market opportunity, we designed, developed and are now delivering a new, expanded solutions portfolio (our "Solutions Portfolio") for a wider array of enterprise software - including an expanded list of supported software; managed services for Oracle, SAP, IBM, Salesforce and open-source database software; and new solutions for security, interoperability, observability and consulting. We also now offer an integrated package of our services as Rimini ONE™, a unique end-to-end, "turnkey" outsourcing option for Oracle and SAP landscapes designed to optimize our clients' existing technologies with a minimum of 15 extended years of operating lifespan and enable our clients to focus their IT talent and budget on potentially higher-value, innovative projects that will support competitive advantage and growth. Property of Rimini Street 2023 | Proprietary and Confidential OPTIMIZE | EVOLVE | TRANSFORM 4

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