Chief Operating Officer — Keith C. Costello: The company appointed a seasoned external executive as COO, which is a strategic hire rather than a departure.

of this Current Report on Form 8-K and Exhibit 99.1 attached hereto shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, unless we specifically state that the information is to be considered “filed” under the Exchange Act or specifically incorporate it by reference in any filing under the Securities Act of 1933, as amended (the “Securities Act”), or the Exchange…

of this Current Report on Form 8-K and Exhibit 99.1 attached hereto shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, unless we specifically state that the information is to be considered “filed” under the Exchange Act or specifically incorporate it by reference in any filing under the Securities Act of 1933, as amended (the “Securities Act”), or the Exchange…

ENTRY INTO A MATERIAL DEFINITIVE AGREEMENT On March 27, 2026, Rimini Street, Inc. (the “ Company ”) entered into Amendment No. 1 (the “ Amendment ”) to that certain Amended and Restated Credit Agreement dated as of April 30, 2024 (as amended, restated, modified or supplemented from time to time, the “ Credit Agreement ”), by and among Rimini Street, Inc., as borrower, the lenders party thereto and Capital One, National Association, as a lender, swing lender and agent for all lenders. The Cred…

CREATION OF A DIRECT FINANCIAL OBLIGATION OR AN OBLIGATION UNDER AN OFF-BALANCE SHEET ARRANGEMENT OF A REGISTRANT The information set forth in

The filing describes the approval of a new long-term incentive plan and equity awards, which is not related to any management change.

of this Current Report on Form 8-K and Exhibit 99.1 attached hereto shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, unless we specifically state that the information is to be considered “filed” under the Exchange Act or specifically incorporate it by reference in any filing under the Securities Act of 1933, as amended (the “Securities Act”), or the Exchange…

Executive Vice President and Chief Innovation Officer — Mr. Vijay Kumar: Mr. Vijay Kumar has been internally transitioned to a new role within the company.

of this Current Report on Form 8-K and Exhibit 99.1 attached hereto shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, unless we specifically state that the information is to be considered “filed” under the Exchange Act or specifically incorporate it by reference in any filing under the Securities Act of 1933, as amended (the “Securities Act”), or the Exchange…

of this Current Report on Form 8-K and Exhibit 99.1 attached hereto shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, unless we specifically state that the information is to be considered “filed” under the Exchange Act or specifically incorporate it by reference in any filing under the Securities Act of 1933, as amended (the “Securities Act”), or the Exchange…

ENTRY INTO A MATERIAL DEFINITIVE AGREEMENT On July 7, 2025 (the “ Effective Date ”), Rimini Street, Inc. ( “ Rimini ” or the “ Company ”) and its President, Chief Executive Officer and Chairman of the Board, Seth A. Ravin (“ Ravin ”), entered into a confidential settlement agreement (the “ Settlement Agreement ”) with Oracle Corporation and certain of its affiliates (collectively, “ Oracle ”) (and all signatories collectively the “ Parties ”). If all Parties complete their agreed upon respons…

Executive Vice President and Chief Marketing Officer — David Rowe: Mr. David Rowe transitioned into a redefined role as the Company’s Executive Vice President and Chief Marketing Officer.

Chief Operating Officer — Vijay Kumar: The company appointed Vijay Kumar as Chief Operating Officer, a significant leadership addition.

of this Current Report on Form 8-K and Exhibit 99.1 attached hereto shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, unless we specifically state that the information is to be considered “filed” under the Exchange Act or specifically incorporate it by reference in any filing under the Securities Act of 1933, as amended (the “Securities Act”), or the Exchange…

REGULATION FD On April 24, 2025, as a result of a mandate (the “ Mandate ”) issued in March 2025 by the United States Court of Appeals for the Ninth Circuit (the “ Ninth Circuit ”) returning jurisdiction over Case Number 2:14-cv-01699-MMD-DJA (“ Rimini II ”) to the United States District Court for the District of Nevada (the “ District Court ”), which case was originally filed by Rimini Street, Inc. (the “ Company ”) against c ertain subsidiaries of Oracle Corporation (collectively, “ Oracle…

The filing describes the details of a new long-term incentive plan and equity awards for executive officers, which is not directly related to any management movement.

of this Current Report on Form 8-K and Exhibit 99.1 attached hereto shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, unless we specifically state that the information is to be considered “filed” under the Exchange Act or specifically incorporate it by reference in any filing under the Securities Act of 1933, as amended (the “Securities Act”), or the Exchange…

is presented as of the date of this Current Report on Form 8-K and not any future date, and the Company does not undertake any obligation to, and disclaims any duty to, update any of the information provided. Please see the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2024, as filed with the United States Securities and Exchange Commission on October 30, 2024, for additional information and disclosures relating to the Company’s litigation with Oracle. The inform…

of this Current Report on Form 8-K and Exhibit 99.1 attached hereto shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, unless we specifically state that the information is to be considered “filed” under the Exchange Act or specifically incorporate it by reference in any filing under the Securities Act of 1933, as amended (the “Securities Act”), or the Exchange…

is presented as of the date of this Report and not any future date, and the Company does not undertake any obligation to, and disclaims any duty to, update any of the information provided. Please see the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2024, as filed with the United States Securities and Exchange Commission (the “SEC”) on July 31, 2024, for additional information and disclosures relating to the Company’s litigation with Oracle. Cautionary Note Regarding…

of Form 8-K. The current vacancy on the audit committee (the “Audit Committee”) of the Company’s Board of Directors (the “Board”) is a result of the previously reported resignation of Ms. Katrinka McCallum from the Board effective as of August 2, 2024, resulting in an Audit Committee comprised of only two qualified directors. Nasdaq was notified of the vacancy on the Company’s Audit Committee on August 2, 2024. In the Letter, Nasdaq indicated that it will provide the Company with a cure perio…

Director — Ms. Katrinka McCallum: Resigned to pursue other endeavors.

of this Current Report on Form 8-K and Exhibit 99.1 attached hereto shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, unless we specifically state that the information is to be considered “filed” under the Exchange Act or specifically incorporate it by reference in any filing under the Securities Act of 1933, as amended (the “Securities Act”), or the Exchange…

MATERIAL MODIFICATION TO RIGHTS OF SECURITY HOLDERS To the extent required by

The filing describes the details of a new long-term incentive plan for executive officers, which is not related to any management change.