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Rimini Street, Inc.

For the period ended Apr 30, 2026. Filed Apr 30, 2026.

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What shareholders are asked to vote on at a company's meeting. It is where to find what directors and top executives are paid, and who owns the most shares.

Apr 30, 2026 · Filed Apr 30, 2026

RMNI$5.22+0.4%Stored close · as of Nov 6, 2026
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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A INFORMATION

Proxy Statement Pursuant to Section 14(a) of the

Securities Exchange Act of 1934

Filed by the Registrant xFiled by a Party other than the Registrant ¨
Check the appropriate box:
¨Preliminary Proxy Statement
¨Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))
xDefinitive Proxy Statement
¨Definitive Additional Materials
¨Soliciting Material under §240.14a-12

RIMINI STREET, INC.

(Name of Registrant as Specified In Its Charter)

N/A

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

Payment of Filing Fee (Check the appropriate box):

xNo fee required.
¨Fee paid previously with preliminary materials.
¨Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11.

NOTICE OF ANNUAL MEETING OF STOCKHOLDERS

Dear Stockholder:

Notice is hereby given that the annual meeting of the stockholders (the “Annual Meeting”) of Rimini Street, Inc., a Delaware corporation (the “Company”), will be held on Wednesday, June 3, 2026, at Noon, Pacific Time. To allow our stockholders to participate regardless of geographic location, our 2026 Annual Meeting will be held by means of a live, virtual-only online audio webcast.

MEETING INFOITEMS OF BUSINESS
¹ · DATE AND TIMEWednesday, June 3, 2026 at Noon, Pacific Time · The Annual Meeting is being held for the following purposes (which are more fully described in the accompanying Proxy Statement):1.To elect the Class III director nominees identified in the accompanying Proxy Statement to the Board of Directors of the Company, each to hold office until the 2029 annual meeting of stockholders and until his successor is elected and qualified.2.To conduct an advisory vote to approve the Company’s executive compensation.3.To ratify the appointment of KPMG LLP as the Company’s independent registered public accounting firm for the fiscal year ending December 31, 2026.4.To transact such other business as may properly come before the Annual Meeting or any adjournments or postponements thereof.
4RECORD DATEApril 15, 2026
: · MEETING WEBSITEwww.cstproxy.com/riministreet/2026 · The Annual Meeting will be a virtual meeting of stockholders, which will be conducted live via audio webcast. For instructions on how to attend, vote your shares and/or submit written questions during the Annual Meeting, see the information in the accompanying Proxy Statement in the sections titled “Access to the 2026 Virtual-Only Annual Meeting” and “Questions and Answers about the Annual Meeting and Voting — How can I attend and vote at the Annual Meeting?”

Whether or not you plan to attend the Annual Meeting, you are encouraged to read the accompanying Proxy Statement and then cast your vote as promptly as possible in accordance with the instructions provided. Submitting a vote before the Annual Meeting will not preclude you from updating your vote online during the Annual Meeting before voting polls are closed.

Our mission is to enable our clients to better control their IT roadmap by offering a comprehensive portfolio of unified software support services and related ERP solutions – designed to be funded within existing budgets – to accelerate the vision of Transformation without Disruption,™ empowering clients to put technology to work to produce more efficient business outcomes to provide a competitive advantage and facilitate growth.

SUPPORTOPTIMIZEINNOVATE
Who can vote:Stockholders of record of the Company’s common stock at the close of business on April 15, 2026 (the "Record Date”) are entitled to notice of, and to attend and vote at, the Annual Meeting and any postponement or adjournment thereof.
Who may attend:All stockholders are cordially invited to attend the Annual Meeting. To receive access to the virtual-only Annual Meeting, registered stockholders and beneficial stockholders (those holding shares through a stock brokerage account or by a bank or other holder of record) will need to follow the instructions applicable to them provided in the accompanying Proxy Statement in the section titled “Access to the 2026 Virtual-Only Annual Meeting.”
How you can vote:Prior to the Annual Meeting, you may vote your proxy by (i) accessing the internet website specified on your proxy card or (ii) marking, signing and returning the enclosed proxy card in the pre-paid postage envelope provided. Stockholders who received their proxy card or voting instruction card through an intermediary (such as a broker or bank) must deliver it in accordance with the instructions given by such intermediary. During the virtual-only Annual Meeting, you or your proxy holder will be able to submit written questions and to vote at the meeting by visiting www.cstproxy.com/riministreet/2026. To receive access to the virtual-only Annual Meeting, registered stockholders and beneficial stockholders (those holding shares through a stock brokerage account or by a bank or other holder of record) will need to follow the instructions applicable to them provided in the accompanying Proxy Statement.

We look forward to the opportunity to interact with our stockholders at the 2026 Annual Meeting.

By Order of the Board of DirectorsRimini Street, Inc.
Sincerely,
/s/ Seth A. Ravin
1700 S. Pavilion Center DriveSuite 330Las Vegas, Nevada 89135Seth A. RavinPresident, Chief Executive Officer andChairman of the Board

April 30, 2026

Important Notice Regarding the Availability of Proxy Materials for the Annual Meeting to be Held on June 3, 2026:This Notice of Annual Meeting of Stockholders and Proxy Statement and our 2025 Annual Report are available at https://www.cstproxy.com/riministreet/2026 and through our website at www.riministreet.com.

YOUR VOTE IS IMPORTANT

Whether or not you expect to attend the virtual-only Annual Meeting, you are urged to vote either via the internet website specified on your proxy card or by marking, signing and returning the enclosed proxy card in the pre-paid postage envelope provided. If you hold shares of common stock through a broker, bank or other nominee, your broker, bank or other nominee will vote your shares for you if you provide instructions on how to vote the shares. In the absence of instructions, your brokerage firm, bank or other nominees can only vote your shares on certain limited matters. It is important that you provide voting instructions because brokers, banks and other nominees do not, for example, have the authority to vote your shares for the election of directors without instructions from you.

TABLE OF CONTENTS

PROXY STATEMENT1
ACCESS TO THE 2026 VIRTUAL-ONLY ANNUAL MEETING2
QUESTIONS AND ANSWERS ABOUT THE ANNUAL MEETING AND VOTING4
PROPOSAL NO. 1 — ELECTION OF CLASS III DIRECTOR NOMINEES9
Nominees9
Board Composition9
Class III Director Nominees — Biographical Information10
Continuing Directors — Biographical Information11
Director Nomination Process12
Board of Directors Recommendation12
Vote Required13
CORPORATE GOVERNANCE MATTERS13
Board Structure13
Corporate Governance Guidelines15
Code of Business Conduct and Ethics15
Board Leadership Structure15
Board Determination of Independence16
Board of Director Meetings and Attendance; Annual Meeting Attendance16
Stockholder Communications17
Standing Committees of the Board of Directors17
The Board’s Role in Risk Oversight19
Compensation Committee Interlocks and Insider Participation20
Policies and Procedures for Related Person Transactions and Insider Trading Policies and Procedures20
Related Person Transactions21
Employee, Officer and Director Hedging21
CORPORATE MISSION AND VALUES22
Our Mission22
Our “4Cs”22
ESG Oversight22
Human Capital Resources — RMNI LOVE™22
COMPENSATION DISCUSSION AND ANALYSIS25
Executive Summary25
Executive Compensation Philosophy and Objectives29
Executive Compensation Review and Determination30
Key Elements of our Executive Compensation Program and 2025 NEO Compensation32
Compensation Risk Assessment41
REPORT OF THE COMPENSATION COMMITTEE OF THE BOARD OF DIRECTORS42
EXECUTIVE COMPENSATION TABLES43
Summary Compensation Table43
2025 Grants of Plan-Based Awards45
Outstanding Equity Awards at Fiscal Year End 202547
Options Exercised and Stock Vested49
Potential Payments upon Termination or Change-in-Control49
Securities Authorized for Issuance Under Equity Compensation Plans53
CEO PAY RATIO54
PAY VERSUS PERFORMANCE55
PROPOSAL NO. 2 — ADVISORY VOTE TO APPROVE EXECUTIVE COMPENSATION59
Background59
Proposal59
Board of Directors Recommendation59
Vote Required59
DIRECTOR COMPENSATION60
PROPOSAL NO. 3 — PROPOSAL TO RATIFY THE APPOINTMENT OF KPMG LLP AS THE COMPANY’S INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM FOR THE FISCAL YEAR ENDING December 31, 202662
Background62
Board of Directors Recommendation62
Vote Required62
KPMG Representative — Attendance at the Annual Meeting62
FEES PAID TO AUDITORS63
Policy on Pre-Approval of Audit and Permissible Non-Audit Services of Independent Auditors; Delegation of Pre-Approval Authority in Specified Instances64
REPORT OF THE AUDIT COMMITTEE OF THE BOARD OF DIRECTORS65
SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT66
OTHER MATTERS AND ADDITIONAL INFORMATION69
Householding of Proxy Materials69
Deadlines for Stockholder Proposals and Director Nominations to be Presented at the Next Annual Meeting69
Other Matters to be Presented for Action at the Annual Meeting70
Appendix A — Reconciliation of Non-GAAP Financial MeasuresA

PLEASE CAREFULLY READ THE PROXY STATEMENT. EVEN IF YOU EXPECT TO ATTEND THE VIRTUAL-ONLY ANNUAL MEETING, PLEASE PROMPTLY COMPLETE, EXECUTE, DATE AND RETURN THE ENCLOSED PROXY CARD IN THE ACCOMPANYING POSTAGE-PAID ENVELOPE. NO POSTAGE IS NECESSARY IF MAILED IN THE UNITED STATES. YOU MAY ALSO VOTE ELECTRONICALLY VIA THE INTERNET BY FOLLOWING THE INSTRUCTIONS ON THE PROXY CARD. IF YOU VOTE BY INTERNET, THEN YOU NEED NOT RETURN A WRITTEN PROXY CARD BY MAIL. STOCKHOLDERS WHO ATTEND THE VIRTUAL-ONLY ANNUAL MEETING MAY REVOKE THEIR PROXIES AND VOTE ON-LINE DURING THE ANNUAL MEETING UNTIL VOTING POLLS ARE CLOSED IF THEY SO DESIRE.

RIMINI STREET, INC.PROXY STATEMENTFOR THE ANNUAL MEETING OF STOCKHOLDERSTo be Held Wednesday, June 3, 2026

ContentsView on SEC.gov

The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.