Rimini Street COO reports no stock ownership

Rimini Street, Inc. (RMNI) executive Keith Conan Costello, EVP & Chief Operating Officer, filed an initial ownership report.

Rhea-AI Filing Summary

Rimini Street, Inc. (RMNI) executive Keith Conan Costello, EVP & Chief Operating Officer, filed an initial ownership report. The filing lists a holding entry for common stock with a footnote stating that no securities are beneficially owned, indicating no reportable equity position at this time.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Costello Keith Conan

Role EVP & Chief Operating Officer

Type	Security	Shares	Price	Value
holding	Common Stock F1	--	--	--

Holdings After Transaction: Common Stock — 0 shares (Direct)

Footnotes (1)

1. F1. No securities are beneficially owned.

Key Figures

Common stock beneficially owned: 0.0000 shares Buy transactions: 0 Sell transactions: 0 +1 more

4 metrics

Common stock beneficially owned 0.0000 shares Total shares of Rimini Street common stock following the reported position

Buy transactions 0 Number of purchase transactions reported in the transaction summary

Sell transactions 0 Number of sale transactions reported in the transaction summary

Holding entries 1 Count of holding-type entries reported for common stock

Key Terms

beneficially owned, Power of Attorney, initial statement of beneficial ownership

3 terms

beneficially owned financial

"footnote states that no securities are beneficially owned"

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

Power of Attorney regulatory

"Exhibit 24.1 - Power of Attorney"

A power of attorney is a legal document that allows one person to make decisions and act on behalf of another person, often in financial or legal matters. It’s like giving someone a trusted helper or agent the authority to handle important tasks if you are unable to do so yourself. This matters to investors because it can impact how their assets are managed or transferred if they become unable to oversee their affairs.

initial statement of beneficial ownership regulatory

"alongside his initial statement of beneficial ownership"

An initial statement of beneficial ownership is the first regulatory filing an insider or large investor submits to disclose the amount of a company's stock they control or benefit from. It matters to investors because it reveals who has significant influence over a company—like showing who’s holding the cards—and helps track potential conflicts of interest, insider motives, and future buying or selling that can move the stock price.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does the Form 3 filed by RMNI executive Keith Conan Costello report?

The Form 3 for RMNI reports that EVP & Chief Operating Officer Keith Conan Costello currently has no securities beneficially owned, meaning no reportable ownership of Rimini Street common stock as of the filing date.

Does RMNI’s EVP & Chief Operating Officer own any common stock according to this Form 3?

According to the filing, the RMNI executive has no securities beneficially owned. A holding line is shown with 0.0000 shares following the reported position, supported by the attached footnote.

What position does the reporting person hold at Rimini Street (RMNI)?

The reporting person, Keith Conan Costello, is identified as EVP & Chief Operating Officer of Rimini Street, Inc. This role is disclosed alongside his initial statement of beneficial ownership on the Form 3.

Are there any buy or sell transactions reported in this RMNI Form 3?

No buy or sell transactions are reported. The Form 3 shows only a holding entry for common stock with 0.0000 shares beneficially owned, and the transaction summary lists no purchases or sales.

What does the footnote in the RMNI Form 3 indicate about ownership?

The footnote explicitly states that no securities are beneficially owned. This clarifies that, despite the common stock line item, the reporting person has no reportable beneficial ownership in Rimini Street shares.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 08/17/2026 - 04:48 PM EDT Learn about SEC filing dates

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0104
Estimated average burden
hours per response:			0.5

1. Name and Address of Reporting Person^*

Costello Keith Conan

(Last) (First) (Middle)

C/O 1700 S. PAVILION CENTER DRIVE

SUITE 330

(Street)

LAS VEGAS NEVADA 89135

(City) (State) (Zip)

UNITED STATES

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
08/17/2026

3. Issuer Name and Ticker or Trading Symbol
Rimini Street, Inc. [ RMNI ]

3a. Foreign Trading Symbol

5. If Amendment, Date of Original Filed (Month/Day/Year)

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP & Chief Operating Officer

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock	0(1)	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. No securities are beneficially owned.

Remarks:

Exhibit List - Exhibit 24.1 - Power of Attorney

	/s/ Celeste Rasmussen Peiffer, as Attorney-in-Fact	08/17/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 3: SEC 1473 (03-26)