1RT Acquisition Sponsor LLC - 01 Jul 2025 Form 3 Insider Report for 1RT Acquisition Corp. (ONCH)

Role: 10%+ Owner
Signature: /s/ Daniel Tapiero, Managing Member of 1RT Acquisition Sponsor LLC
Issuer symbol: ONCH
Transactions as of: 01 Jul 2025
Net transactions value: $0
Form type: 3
Filing time: 01 Jul 2025, 21:01:16 UTC
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
1RT Acquisition Sponsor LLC	10%+ Owner	C/O 1RT ACQUISITION CORP., 205 WEST 28TH STREET, 2ND FLOOR SUITE C, NEW YORK	/s/ Daniel Tapiero, Managing Member of 1RT Acquisition Sponsor LLC	01 Jul 2025	0002054339

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	ONCH	Class B Ordinary Shares							01 Jul 2025	Class A Ordinary Shares	4,312,500		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 registration statement on Form S-1 (File No. 333-287941) of 1RT Acquisition Corp. (the "Issuer") under the heading "Description of Securities--Founder Shares," 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, or at any time prior to the Issuer's initial business combination, at the option of the holder, on a one-for-one basis, subject to certain adjustments. The Class B ordinary shares have no expiration date.
F2	These shares represent the Class B ordinary shares held by 1RT Acquisition Sponsor LLC (the "Sponsor") acquired pursuant to a subscription agreement by and between the Issuer and the Sponsor. The Class B ordinary shares include up to 562,50 shares that are subject to forfeiture in the event the underwriters of the Issuer's initial public offering do not exercise in full their over-allotment option as described in the Issuer's registration statement.

Content

As described in the registration statement on Form S-1 (File No. 333-287941) of 1RT Acquisition Corp. (the "Issuer") under the heading "Description of Securities--Founder Shares," 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, or at any time prior to the Issuer's initial business combination, at the option of the holder, on a one-for-one basis, subject to certain adjustments. The Class B ordinary shares have no expiration date.

These shares represent the Class B ordinary shares held by 1RT Acquisition Sponsor LLC (the "Sponsor") acquired pursuant to a subscription agreement by and between the Issuer and the Sponsor. The Class B ordinary shares include up to 562,50 shares that are subject to forfeiture in the event the underwriters of the Issuer's initial public offering do not exercise in full their over-allotment option as described in the Issuer's registration statement.