RMNI · Rimini Street, Inc.

Each Restricted Stock Unit represents a contingent right to receive one share of the Issuer's Common Stock upon vesting.

100% of the Restricted Stock Units awarded will vest on the earlier to occur of (i) June 3, 2027 or (ii) the day before the date of the Issuer's 2027 Annual Meeting of Stockholders, contingent upon the Reporting Person's continued service as a member of the Issuer's Board of Directors through such date.

Each Restricted Stock Unit represents a contingent right to receive one share of the Issuer's Common Stock upon vesting.

100% of the Restricted Stock Units awarded will vest on the earlier to occur of (i) June 3, 2027 or (ii) the day before the date of the Issuer's 2027 Annual Meeting of Stockholders, contingent upon the Reporting Person's continued service as a member of the Issuer's Board of Directors through such date.

Each Restricted Stock Unit represents a contingent right to receive one share of the Issuer's Common Stock upon vesting.

100% of the Restricted Stock Units awarded will vest on the earlier to occur of (i) June 3, 2027 or (ii) the day before the date of the Issuer's 2027 Annual Meeting of Stockholders, contingent upon the Reporting Person's continued service as a member of the Issuer's Board of Directors through such date.

Each Restricted Stock Unit represents a contingent right to receive one share of the Issuer's Common Stock upon vesting.

100% of the Restricted Stock Units awarded will vest on the earlier to occur of (i) June 3, 2027 or (ii) the day before the date of the Issuer's 2027 Annual Meeting of Stockholders, contingent upon the Reporting Person's continued service as a member of the Issuer's Board of Directors through such date.

The shares of common stock were issued to the Reporting Person, Robin Murray, a director of the Issuer who is a partner of Adams Street Partners, LLC. Adams Street Partners, LLC is the managing member of the general partner of AS 2007, AS 2008, and AS 2009, the managing member of the general partner of the general partner of each of AS 2013, AS 2014, AS 2015, AS 2016 and AS VGVI (collectively, the "Funds") and the manager of ASRA. By agreement with the Funds, Mr. Murray is deemed to hold the shares of common stock for the benefit of the Funds. The shares of common stock may be deemed to be indirectly beneficially owned by Adams Street Partners, LLC. Messrs. Bluestein, Bremmer, Brett, Cliff, Dudley, Jeevarathnam, Kessel, Morrison, Murray, Taylor, Wallwork, Wang and Waslin, each of whom is a partner of Adams Street Partners, LLC (or a subsidiary thereof), disclaim beneficial ownership of the shares of common stock except to the extent of their pecuniary interest therein.

Each Restricted Stock Unit represents a contingent right to receive one share of the Issuer's Common Stock upon vesting.

On June 4, 2025, the Reporting Person was awarded 55,727 Restricted Stock Units, 100% of which vested on June 2, 2026, or the day before the date of the Issuer's 2026 Annual Meeting of Stockholders.

Each Restricted Stock Unit represents a contingent right to receive one share of the Issuer's Common Stock upon vesting.

On June 4, 2025, the Reporting Person was awarded 55,727 Restricted Stock Units, 100% of which vested on June 2, 2026, or the day before the date of the Issuer's 2026 Annual Meeting of Stockholders.

Each Restricted Stock Unit represents a contingent right to receive one share of the Issuer's Common Stock upon vesting.

On June 4, 2025, the Reporting Person was awarded 55,727 Restricted Stock Units, 100% of which vested on June 2, 2026, or the day before the date of the Issuer's 2026 Annual Meeting of Stockholders.

Each Restricted Stock Unit represents a contingent right to receive one share of the Issuer's Common Stock upon vesting.

On June 4, 2025, the Reporting Person was awarded 55,727 Restricted Stock Units, 100% of which vested on June 2, 2026, or the day before the date of the Issuer's 2026 Annual Meeting of Stockholders.

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 Performance 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 May 6, 2024, the Reporting Person was granted 48,582 Restricted Stock Units, one-third of which vested on May 6, 2025 and one-third of which vested on May 6, 2026. The remaining one-third will vest on May 6, 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.

Each Restricted Stock Unit represents a contingent right to receive one share of the Issuer's Common Stock upon vesting.

On May 6, 2024, the Reporting Person was granted 48,582 Restricted Stock Units, one-third of which vested on May 6, 2025 and one-third of which vested on May 6, 2026. The remaining one-third will vest on May 6, 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.

Each Restricted Stock Unit represents a contingent right to receive one share of the Issuer's Common Stock upon vesting.

On May 6, 2024, the Reporting Person was granted 48,582 Restricted Stock Units, one-third of which vested on May 6, 2025 and one-third of which vested on May 6, 2026. The remaining one-third will vest on May 6, 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.

Represents one-third of the total 136,032 "Earned Performance Units" (as previously reported by the Reporting Person on a Form 4 dated March 3, 2025) under the terms of the Issuer's 2013 Long-Term Incentive Plan based upon the Issuer's achievement against a target "Adjusted EBITDA" goal for fiscal year 2024 and the Issuer's achievement against a target "Total Revenue" performance goal for fiscal year 2024, effective as of February 27, 2025 (the date the Issuer filed its Annual Report on Form 10-K for the year ended December 31, 2024).

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.

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 Performance Unit vesting events. The Reporting Person did not initiate the sale.

Each Performance Unit represents a contingent right to receive one share of the Issuer's Common Stock upon vesting.

One-third of the "Earned Performance Units" vested on May 6, 2025, and one-third of the "Earned Performance Units" vested on May 6, 2026. The remaining one-third will vest on May 6, 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.

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 Performance Unit vesting events. The Reporting Person did not initiate the sale.

Represents one-third of the total 13,602 "Earned Performance Units" (as previously reported by the Reporting Person on a Form 4 dated March 3, 2025) under the terms of the Issuer's 2013 Long-Term Incentive Plan based upon the Issuer's achievement against a target "Adjusted EBITDA" goal for fiscal year 2024 and the Issuer's achievement against a target "Total Revenue" performance goal for fiscal year 2024, effective as of February 27, 2025 (the date the Issuer filed its Annual Report on Form 10-K for the year ended December 31, 2024).

Represents one-third of the total 13,602 "Earned Performance Units" (as previously reported by the Reporting Person on a Form 4 dated March 3, 2025) under the terms of the Issuer's 2013 Long-Term Incentive Plan based upon the Issuer's achievement against a target "Adjusted EBITDA" goal for fiscal year 2024 and the Issuer's achievement against a target "Total Revenue" performance goal for fiscal year 2024, effective as of February 27, 2025 (the date the Issuer filed its Annual Report on Form 10-K for the year ended December 31, 2024).

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 Performance Unit vesting events. The Reporting Person did not initiate the sale.

Each Performance Unit represents a contingent right to receive one share of the Issuer's Common Stock upon vesting.

One-third of the "Earned Performance Units" vested on May 6, 2025, and one-third of the "Earned Performance Units" vested on May 6, 2026. The remaining one-third will vest on May 6, 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.

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.

Represents one-third of the total 45,344 "Earned Performance Units" (as previously reported by the Reporting Person on a Form 4 dated March 3, 2025) under the terms of the Issuer's 2013 Long-Term Incentive Plan based upon the Issuer's achievement against a target "Adjusted EBITDA" goal for fiscal year 2024 and the Issuer's achievement against a target "Total Revenue" performance goal for fiscal year 2024, effective as of February 27, 2025 (the date the Issuer filed its Annual Report on Form 10-K for the year ended December 31, 2024).

Each Performance Unit represents a contingent right to receive one share of the Issuer's Common Stock upon vesting.

One-third of the "Earned Performance Units" vested on May 6, 2025, and one-third of the "Earned Performance Units" vested on May 6, 2026. The remaining one-third will vest on May 6, 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.

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.

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.

Represents one-third of the total 13,602 "Earned Performance Units" (as previously reported by the Reporting Person on a Form 4 dated March 3, 2025) under the terms of the Issuer's 2013 Long-Term Incentive Plan based upon the Issuer's achievement against a target "Adjusted EBITDA" goal for fiscal year 2024 and the Issuer's achievement against a target "Total Revenue" performance goal for fiscal year 2024, effective as of February 27, 2025 (the date the Issuer filed its Annual Report on Form 10-K for the year ended December 31, 2024).

Each Performance Unit represents a contingent right to receive one share of the Issuer's Common Stock upon vesting.

One-third of the "Earned Performance Units" vested on May 6, 2025, and one-third of the "Earned Performance Units" vested on May 6, 2026. The remaining one-third will vest on May 6, 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.

Each Performance Unit represents a contingent right to receive one share of the Issuer's Common Stock upon vesting.

One-third of the "Earned Performance Units" vested on May 6, 2025, and one-third of the "Earned Performance Units" vested on May 6, 2026. The remaining one-third will vest on May 6, 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.

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 Performance 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 May 6, 2024, the Reporting Person was granted 291,497 Restricted Stock Units, one-third of which vested on May 6, 2025 and one-third of which vested on May 6, 2026. The remaining one-third will vest on May 6, 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.

Each Restricted Stock Unit represents a contingent right to receive one share of the Issuer's Common Stock upon vesting.

On May 6, 2024, the Reporting Person was granted 161,943 Restricted Stock Units, one-third of which vested on May 6, 2025 and one-third of which vested on May 6, 2026. The remaining one-third will vest on May 6, 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.

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.

1. The reported sale of 51,246 shares occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 2, 2025.

Each Restricted Stock Unit represents a contingent right to receive one share of the Issuer's Common Stock upon vesting.

On April 30, 2024, the Reporting Person was granted 300,000 Restricted Stock Units, one-third of which vested on April 30, 2025 and one-third of which vested on April 30, 2026. The remaining one-third will vest on April 30, 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 applicable vesting date.

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.

The Reporting Person is amending his Form 4 filed April 7, 2026, to add automatic "sell-to-cover" transactions related to the payment of withholding tax obligations pursuant to the Issuer's policy for tax withholdings associated with Restricted Stock Unit and Performance Unit vesting events. The sales occurred over a three-day period (April 7, 8 and 9) and were processed by the Company's stock plan administrator. The Reporting Person did not initiate the sales and had no control over the timing of the sales. The sales were not reported by the Company's stock plan administrator to the Reporting Person until April 9, 2026.

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 April 3, 2023, the Reporting Person was granted 229,007 Restricted Stock Units, one-third of which vested on April 3, 2024, one-third of which vested on April 3, 2025, and one-third of which vested on April 3, 2026, 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.

Each Restricted Stock Unit represents a contingent right to receive one share of the Issuer's Common Stock upon vesting.

On April 3, 2023, the Reporting Person was granted 20,000 Restricted Stock Units, one-third of which vested on April 3, 2024, one-third of which vested on April 3, 2025, and one-third of which vested on April 3, 2026, 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.