Ioannis Pipilis - 13 Jan 2026 Form 3 Insider Report for OneIM Acquisition Corp.

Role: Chief Executive Officer, Director, 10%+ Owner
Signature: /s/ Ioannis Pipilis
Issuer symbol: OIM
Transactions as of: 13 Jan 2026
Net transactions value: $0
Form type: 3
Filing time: 13 Jan 2026, 18:49:13 UTC
Previous filing: 09 Jun 2022
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Pipilis Ioannis	Chief Executive Officer, Director, 10%+ Owner	C/O ONEIM ACQUISITION CORP., 11TH FLOOR, 390 PARK AVENUE, NEW YORK	/s/ Ioannis Pipilis	13 Jan 2026	0001849072

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
holding	OIM	Class B ordinary shares, par value $0.0001 per share							13 Jan 2026	Class A ordinary shares, par value $0.0001 per share	7,187,500		Direct	F1, F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	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.
F2	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.

Content

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.

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.