OneIM director reports 25,000 Class B stake in OneIM (OIMAU)

Rhea-AI Filing Summary

OneIM Acquisition Corp. director Mark DiPaolo filed an initial ownership report showing a stake in the company’s sponsor shares. He beneficially owns 25,000 Class B ordinary shares, par value $0.0001 per share, held directly. According to the disclosure, these Class B shares will automatically convert into Class A ordinary shares on a one-for-one basis at the time of OneIM’s initial business combination, subject to certain adjustments, and have no expiration date. The filing notes that the shares were acquired via a share transfer agreement between OneIM Sponsor LLC and the issuer, rather than through an open-market trade.

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^*

DiPaolo Mark

(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		10% Owner
	Officer (give title below)		Other (specify below)

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	25,000	(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 the Reporting Person, acquired pursuant to a share transfer agreement by and between the OneIM Sponsor LLC and the Issuer.

	/s/ Mark DiPaolo	01/13/2026
	** 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.

FAQ

What insider position did Mark DiPaolo report in OneIM Acquisition Corp. (OIMAU)?

Mark DiPaolo reported beneficial ownership of 25,000 Class B ordinary shares of OneIM Acquisition Corp., as disclosed in his Form 3 filing.

What type of shares does Mark DiPaolo hold in OneIM Acquisition Corp. (OIMAU)?

He holds Class B ordinary shares, par value $0.0001 per share, which are typically founder or sponsor shares in a special purpose acquisition company structure.

How will Mark DiPaolo’s Class B shares in OIMAU convert in the future?

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

Did Mark DiPaolo buy or sell shares in the market in this OIMAU filing?

No market trade is described. The Form 3 indicates he beneficially owns 25,000 Class B shares, which were acquired pursuant to a share transfer agreement between OneIM Sponsor LLC and the issuer.

What is Mark DiPaolo’s relationship to OneIM Acquisition Corp. (OIMAU)?

He is reported as a director of OneIM Acquisition Corp. and is not listed as an officer or 10% owner in this filing.

How is Mark DiPaolo’s ownership in OIMAU classified in the filing?

The 25,000 Class B ordinary shares are reported as directly held (D) beneficial ownership, with no indirect ownership entity noted.