OneIM Sponsor LLC - 13 Jan 2026 Form 3 Insider Report for OneIM Acquisition Corp.

Role: 10%+ Owner
Signature: /s/ Grigorios Kapenis, Authorized Person
Issuer symbol: OIM
Transactions as of: 13 Jan 2026
Net transactions value: $0
Form type: 3
Filing time: 13 Jan 2026, 18:47:57 UTC
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
OneIM Sponsor LLC	10%+ Owner	C/O ONEIM ACQUISITION CORP., 11TH FLOOR, 390 PARK AVENUE, NEW YORK	/s/ Grigorios Kapenis, Authorized Person	13 Jan 2026	0002089384

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. 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.