J. Goldman details 5% 1RT Acquisition Corp stake (ONCH)

Rhea-AI Filing Summary

J. Goldman & Co. and related parties filed an amended Schedule 13G/A reporting a 5.00% beneficial stake in 1RT Acquisition Corp. They report beneficial ownership of 862,500 Class A Ordinary Shares, based on 17,250,000 shares outstanding as of August 12 and November 13, 2025.

The shares are held through J. Goldman Master Fund, L.P. and J. Goldman Enhanced Master Fund, L.P., with J. Goldman & Co., J. Goldman Capital Management, Inc., and Jay G. Goldman each reporting shared voting and shared dispositive power over the 862,500 shares and no sole power. They state the position is held in the ordinary course of business and not for the purpose of changing or influencing control of the company.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

1RT Acquisition Corp.

(Name of Issuer)

Class A Ordinary Shares, par value $0.0001 per share

(Title of Class of Securities)

G6757R105

(CUSIP Number)

12/31/2025

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

SCHEDULE 13G

CUSIP No. G6757R105

1

Names of Reporting Persons

J. Goldman & Co LP

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 862,500.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 862,500.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

862,500.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

5.00 %

12

Type of Reporting Person (See Instructions)

IA, PN

Comment for Type of Reporting Person: Represents the Reporting Person's beneficial ownership of Class A Ordinary Shares (as defined in Item 2(a)) as of September 30, 2025 and as of December 31, 2025.

SCHEDULE 13G

CUSIP No. G6757R105

1

Names of Reporting Persons

J. Goldman Capital Management, Inc.

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 862,500.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 862,500.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

862,500.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

5.00 %

12

Type of Reporting Person (See Instructions)

HC, CO

Comment for Type of Reporting Person: Represents the Reporting Person's beneficial ownership of Class A Ordinary Shares as of September 30, 2025 and as of December 31, 2025.

SCHEDULE 13G

CUSIP No. G6757R105

1

Names of Reporting Persons

Jay G. Goldman

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 862,500.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 862,500.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

862,500.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

5.00 %

12

Type of Reporting Person (See Instructions)

HC, IN

Comment for Type of Reporting Person: Represents the Reporting Person's beneficial ownership of Class A Ordinary Shares as of September 30, 2025 and as of December 31, 2025.

SCHEDULE 13G

Item 1.
(a)	Name of issuer: 1RT Acquisition Corp.
(b)	Address of issuer's principal executive offices: 205 West 28th Street, 2nd Floor Suite C, New York, New York 10001
Item 2.
(a)	Name of person filing: This statement is filed by: (i) J. Goldman & Co., L.P. ("JGC") with respect the Class A ordinary shares, par value $0.0001 per share (the "Class A Ordinary Shares") of 1RT Acquisition Corp. (the "Company") held by J. Goldman Master Fund, L.P. ("JGMF") and J. Goldman Enhanced Master Fund, L.P. ("JGEMF"); (ii) J. Goldman Capital Management, Inc. ("JGCM") with respect to the Class A Ordinary Shares held by JGMF and JGEMF; and (iii) Mr. Jay G. Goldman with respect to the Class A Ordinary Shares held by JGMF and JGEMF. The filing of this statement should not be construed as an admission that any of the forgoing persons or any Reporting Person is, for the purposes of Section 13 of the Act, the beneficial owner of the Class A Ordinary Shares reported herein. This Schedule 13G (i) amends and restates in its entirety the Reporting Persons' Schedule 13G filed with the Securities and Exchange Commission on November 14, 2025, and (ii) reports the Reporting Persons' beneficial ownership of Class A Ordinary Shares as of September 30, 2025 and as of December 31, 2025.
(b)	Address or principal business office or, if none, residence: The address of the business office of each of the Reporting Persons is: c/o J. Goldman & Co., L.P. 510 Madison Avenue, 26th Floor New York, NY 10022
(c)	Citizenship: Citizenship is set forth in Row (4) of the cover page for each Reporting Person hereto and is incorporated herein by reference for each such Reporting Person.
(d)	Title of class of securities: Class A Ordinary Shares, par value $0.0001 per share
(e)	CUSIP No.: G6757R105
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: The information required by Item 4(a) is set forth in Row (9) of the cover page for each of the Reporting Persons and is incorporated herein by reference. The percentages set forth in this Schedule 13G as of September 30, 2025 and as of December 31, 2025 are calculated based upon an aggregate of 17,250,000 Class A Ordinary Shares outstanding (i) as of August 12, 2025, as reported in the Company's Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2025 filed with the Securities and Exchange Commission on August 13, 2025 and (ii) as of November 13, 2025, as reported in the Company's Quarterly Report on Form 10-Q for the quarterly period ended September 30, 2025 filed with the Securities and Exchange Commission on November 13, 2025, respectively.
(b)	Percent of class: 5.00%
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: The information required by Item 4(c)(i) is set forth in Row (5) of the cover page for each of the Reporting Persons and is incorporated herein by reference.
	(ii) Shared power to vote or to direct the vote: The information required by Item 4(c)(ii) is set forth in Row (6) of the cover page for each of the Reporting Persons and is incorporated herein by reference.
	(iii) Sole power to dispose or to direct the disposition of: The information required by Item 4(c)(iii) is set forth in Row (7) of the cover page for each of the Reporting Persons and is incorporated herein by reference.
	(iv) Shared power to dispose or to direct the disposition of: The information required by Item 4(c)(iv) is set forth in Row (8) of the cover page for each of the Reporting Persons and is incorporated herein by reference.
Item 5.	Ownership of 5 Percent or Less of a Class.
	Ownership of 5 percent or less of a class
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required. See Item 2(a).
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

J. Goldman & Co LP

Signature:	/s/ Sagan A. Weiss
Name/Title:	By: Sagan A. Weiss, Chief Compliance Officer
Date:	02/17/2026

J. Goldman Capital Management, Inc.

Signature:	/s/ Jay G. Goldman
Name/Title:	Jay G. Goldman, Director
Date:	02/17/2026

Jay G. Goldman

Signature:	s/ Jay G. Goldman
Name/Title:	Jay G. Goldman, individually
Date:	02/17/2026

Exhibit Information

Exhibit 99.1: Joint Filing Agreement

FAQ

What ownership in 1RT Acquisition Corp does the ONCH Schedule 13G/A disclose?

The filing reports beneficial ownership of 862,500 Class A Ordinary Shares, representing 5.00% of 1RT Acquisition Corp. This percentage is calculated against 17,250,000 shares outstanding as of August 12 and November 13, 2025, as disclosed in the company’s quarterly reports.

Who are the reporting persons in this ONCH Schedule 13G/A filing?

The reporting persons are J. Goldman & Co., L.P., J. Goldman Capital Management, Inc., and Jay G. Goldman. Each reports beneficial ownership of the same 862,500 Class A Ordinary Shares of 1RT Acquisition Corp. through investment funds J. Goldman Master Fund, L.P. and J. Goldman Enhanced Master Fund, L.P.

What voting and dispositive powers are reported in the ONCH Schedule 13G/A?

Each reporting person discloses 0 shares with sole voting or dispositive power and 862,500 shares with shared voting and shared dispositive power. This means decisions over these 1RT Acquisition Corp. shares are made jointly, not individually, by the reporting parties.

As of what dates is the 5.00% ownership in 1RT Acquisition Corp measured?

The 5.00% beneficial ownership is reported as of September 30, 2025 and December 31, 2025. The percentage is based on 17,250,000 Class A Ordinary Shares outstanding on August 12 and November 13, 2025, as detailed in the issuer’s Form 10-Q filings.

Is the ONCH Schedule 13G/A filing intended to influence control of 1RT Acquisition Corp?

The certification states the securities were acquired and are held in the ordinary course of business and not for the purpose or effect of changing or influencing control of 1RT Acquisition Corp., nor in connection with any transaction having that control-related purpose or effect.

Does the ONCH Schedule 13G/A indicate group or control person status?

The filing characterizes J. Goldman & Co., L.P. as an investment adviser (IA) and J. Goldman Capital Management, Inc. and Jay G. Goldman as holding companies/control persons (HC). It also notes this amendment restates a prior Schedule 13G and reflects ownership as of late 2025.