OneIM Acquisition (OIMAU) CEO tied to 7.19M convertible Class B shares

Rhea-AI Filing Summary

OneIM Acquisition Corp. filed an initial ownership report showing that OneIM Sponsor LLC, an entity associated with Chief Executive Officer and director Ioannis Pipilis, holds 7,187,500 Class B ordinary shares. These Class B shares will automatically convert into Class A ordinary shares on a one-for-one basis at the time of the company’s initial business combination, subject to certain adjustments and with no expiration date. The sponsor’s holdings include up to 937,500 Class B shares that may be forfeited depending on the underwriters’ over-allotment. Pipilis may be deemed to have an indirect economic and dispositive interest in the securities held by the sponsor, but he disclaims beneficial ownership except to the extent of his pecuniary interest.

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

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1. Name and Address of Reporting Person^*

Pipilis Ioannis

(Last) (First) (Middle)

C/O ONEIM ACQUISITION CORP.

11TH FLOOR, 390 PARK AVENUE

(Street)

NEW YORK NY 10022

(City) (State) (Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
01/13/2026

3. Issuer Name and Ticker or Trading Symbol
OneIM Acquisition Corp. [ OIM ]

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

X	Director	X	10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Executive Officer

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

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)

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
Class B ordinary shares, par value $0.0001 per share	(1)	(1)	Class A ordinary shares, par value $0.0001 per share	7,187,500	(1)	D(2)

Explanation of Responses:

1. As described in the Issuer's registration statement on Form S-1 (No. 333-292356), the shares of Class B ordinary shares will automatically convert into shares of Class A ordinary shares at the time of the Issuer's initial business combination on a one-for-one basis subject to certain adjustments and have no expiration date.

2. These shares represent the shares of Class B ordinary shares held directly by OneIM Sponsor LLC (the "Sponsor"), acquired pursuant to a subscription agreement by and between the Sponsor and the Issuer. GCT Capital Partners II LP is the sole managing member of the Sponsor; its general partner is GCT Capital LLC, controlled by the Reporting Person, among others. The Reporting Person may be deemed to have an indirect economic and dispositive interest in the securities held by the Sponsor, but disclaims beneficial ownership except to the extent of his pecuniary interest therein. The shares of Class B ordinary shares owned by the Sponsor includes up to 937,500 shares which are subject to forfeiture depending on the underwriters' over-allotment.

	/s/ Ioannis Pipilis	01/13/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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FAQ

What insider position is reported in OneIM Acquisition Corp. (OIMAU)'s Form 3?

The Form 3 reports that OneIM Sponsor LLC holds 7,187,500 Class B ordinary shares of OneIM Acquisition Corp., with indirect economic and dispositive interest attributable to Chief Executive Officer and director Ioannis Pipilis, subject to his pecuniary interest.

Who is the reporting person in this OneIM Acquisition Corp. (OIMAU) Form 3?

The reporting person is Ioannis Pipilis, who serves as a director, Chief Executive Officer, and a 10% owner of OneIM Acquisition Corp., with interests tied to shares held by OneIM Sponsor LLC.

How do OneIM Acquisition Corp. (OIMAU) Class B shares convert into Class A shares?

The filing states that the Class B ordinary shares will automatically convert into Class A ordinary shares at the time of OneIM Acquisition Corp.’s initial business combination on a one-for-one basis, subject to certain adjustments, and they have no expiration date.

Are any of the OneIM Acquisition Corp. (OIMAU) sponsor shares subject to forfeiture?

Yes. The Class B shares held by OneIM Sponsor LLC include up to 937,500 shares that are subject to forfeiture depending on the underwriters’ over-allotment.

Does Ioannis Pipilis directly own the 7,187,500 Class B shares of OneIM Acquisition Corp. (OIMAU)?

No. The shares are held directly by OneIM Sponsor LLC. The filing notes that Ioannis Pipilis may be deemed to have an indirect economic and dispositive interest in those securities but disclaims beneficial ownership except to the extent of his pecuniary interest.

What entities are involved in holding the sponsor shares of OneIM Acquisition Corp. (OIMAU)?

The Class B shares are held by OneIM Sponsor LLC. GCT Capital Partners II LP is the sole managing member of the sponsor, and its general partner is GCT Capital LLC, which is controlled by Ioannis Pipilis, among others.