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Rithm Acquisition Corp. has a significant shareholder group associated with Fort Baker Capital Management LP. Fort Baker Capital Management LP directly holds 1,950,405 Class A ordinary shares included as part of the units.
Fort Baker Capital Management LP, Steven Patrick Pigott and Fort Baker Capital, LLC each report beneficial ownership of 8.2% of the Class A ordinary shares, based on 23,660,000 shares outstanding as of August 10, 2026. Each reporting person has shared voting and dispositive power over 1,950,405 shares and no sole voting or dispositive power, and each disclaims beneficial ownership except to the extent of that person’s pecuniary interest.
Key Figures
Shares beneficially owned:1,950,405 Class A ordinary sharesPercent of class owned:8.2%Shares outstanding:23,660,000 Class A ordinary shares+3 more
6 metrics
Shares beneficially owned1,950,405 Class A ordinary sharesDirectly held by Fort Baker Capital Management LP
Percent of class owned8.2%Beneficial ownership for each reporting person
Shares outstanding23,660,000 Class A ordinary sharesOutstanding as of August 10, 2026, per issuer’s quarterly report
Shared voting power1,950,405 sharesShared power to vote or direct the vote for each reporting person
Sole voting power0 sharesSole power to vote or direct the vote for each reporting person
Shared dispositive power1,950,405 sharesShared power to dispose or direct disposition for each reporting person
"The calculation percentage of beneficial ownership in Item 11 was derived"
Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.
shared voting powerfinancial
"6 | Shared Voting Power 1,950,405.00"
Shared voting power occurs when two or more parties jointly have the right to vote or decide how a block of company shares is cast, like co-owners who must agree before moving a piece of furniture. Investors care because who controls voting rights affects board elections, major corporate decisions and takeover outcomes, and shared control can alter regulatory disclosures and the practical influence any holder has over a company’s direction and value.
dispositive powerfinancial
"Sole Dispositive Power 0.00 8 | Shared Dispositive Power 1,950,405.00"
Dispositive power is the authority to decide the final outcome of an asset, legal claim, contract, or corporate action — in effect the power to dispose of or resolve something. For investors it matters because whoever holds that authority can determine who gets paid, who controls an asset or vote, and how risks and returns are allocated; think of it like holding the key that lets you lock in the winner or loser in a deal.
pecuniary interestfinancial
"disclaims beneficial ownership of the securities reported herein except to the extent of that person's pecuniary interest therein"
Class A ordinary sharesfinancial
"Title of class of securities: Class A ordinary shares included as part of the units"
Class A ordinary shares are a type of ownership stake in a company that typically grants voting rights to shareholders, allowing them to have a say in important company decisions. They often come with priority in receiving dividends or profits, making them attractive to investors seeking influence and potential income. These shares help distinguish different levels of ownership and rights within a company's stock structure.
FAQ
AI-generated questions and answers. How Rhea-AI works. Not financial advice.
What percentage of Rithm Acquisition Corp. (RAC) does Fort Baker Capital Management LP report owning?
Fort Baker Capital Management LP reports beneficial ownership of 8.2% of Rithm Acquisition Corp.’s Class A ordinary shares. This percentage is based on 23,660,000 Class A ordinary shares outstanding as of August 10, 2026, as stated by the issuer.
How many Rithm Acquisition Corp. (RAC) Class A shares are held by Fort Baker Capital Management LP?
Fort Baker Capital Management LP directly holds 1,950,405 Class A ordinary shares of Rithm Acquisition Corp. These shares are included as part of the units and form the basis for the reported 8.2% beneficial ownership stake.
Who are the reporting persons for the Rithm Acquisition Corp. (RAC) ownership disclosure?
The reporting persons are Fort Baker Capital Management LP, Steven Patrick Pigott, and Fort Baker Capital, LLC. Pigott is the Limited Partner/Chief Investment Officer of Fort Baker Capital Management LP, and Fort Baker Capital, LLC is its General Partner.
What voting power do the reporting persons have over Rithm Acquisition Corp. (RAC) shares?
Each reporting person has 0 sole voting power and 1,950,405 shared voting power over Rithm Acquisition Corp.’s Class A ordinary shares. They similarly hold 0 sole dispositive power and 1,950,405 shared dispositive power.
How was the 8.2% ownership in Rithm Acquisition Corp. (RAC) calculated?
The 8.2% beneficial ownership was derived using 23,660,000 Class A ordinary shares outstanding as of August 10, 2026. That outstanding share figure comes from the issuer’s quarterly report, and the stake reflects 1,950,405 shares held.
Do the Fort Baker reporting persons consider themselves a group regarding Rithm Acquisition Corp. (RAC)?
The reporting persons state they are submitting the disclosure jointly, but not as members of a group. Each also disclaims beneficial ownership of the reported securities except to the extent of that person’s pecuniary interest in them.
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
Rithm Acquisition Corp.
(Name of Issuer)
Class A ordinary shares included as part of the units
(Title of Class of Securities)
(CUSIP Number)
06/30/2026
(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)
schemaVersion:
SCHEDULE 13G
CUSIP No.
1
Names of Reporting Persons
Fort Baker Capital Management 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
1,950,405.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
1,950,405.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
1,950,405.00
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)
8.2 %
12
Type of Reporting Person (See Instructions)
IA
SCHEDULE 13G
CUSIP No.
1
Names of Reporting Persons
Steven Patrick Pigott
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
UNITED STATES
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
1,950,405.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
1,950,405.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
1,950,405.00
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)
8.2 %
12
Type of Reporting Person (See Instructions)
IN
SCHEDULE 13G
CUSIP No.
1
Names of Reporting Persons
Fort Baker Capital, LLC
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
1,950,405.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
1,950,405.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
1,950,405.00
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)
8.2 %
12
Type of Reporting Person (See Instructions)
HC
SCHEDULE 13G
Item 1.
(a)
Name of issuer:
Rithm Acquisition Corp.
(b)
Address of issuer's principal executive offices:
799 BROADWAY, 8TH FLOOR, NEW YORK, NEW YORK, 10003.
Item 2.
(a)
Name of person filing:
Fort Baker Capital Management LP
Steven Patrick Pigott
Fort Baker Capital, LLC
(b)
Address or principal business office or, if none, residence:
The principal business address of each reporting person is 700 Larkspur Landing Circle, Suite 275, Larkspur, CA 94939.
(c)
Citizenship:
Fort Baker Capital Management LP: Delaware Limited Partnership
Steven Patrick Pigott: Citizen of the United States
Fort Baker Capital, LLC: Delaware Limited Liability Company
(d)
Title of class of securities:
Class A ordinary shares included as part of the units
(e)
CUSIP No.:
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:
Reference is hereby made to Items 5-9 of this Schedule, which Items are incorporated by reference herein.
Fort Baker Capital Management LP directly holds 1,950,405 Class A ordinary shares. Steven Patrick Pigott acts as Limited Partner/Chief Investment Officer for Fort Baker Capital Management LP. Fort Baker Capital, LLC acts as General Partner for Fort Baker Capital Management LP.
The Reporting Persons are filing this Schedule 13G jointly, but not as members of a group, and each disclaims membership in a group. Each also disclaims beneficial ownership of the securities reported herein except to the extent of that person's pecuniary interest therein.
The calculation percentage of beneficial ownership in Item 11 was derived from the Issuer's quarterly report on Form 10-Q filed with the Securities and Exchange Commission on August 11, 2026, in which the Issuer stated that the number of Class A Ordinary Shares outstanding was 23,660,000 as of August 10, 2026.
(b)
Percent of class:
Fort Baker Capital Management LP: 8.2%
Steven Patrick Pigott: 8.2%
Fort Baker Capital, LLC: 8.2%
(c)
Number of shares as to which the person has:
(i) Sole power to vote or to direct the vote:
Fort Baker Capital Management LP: 0
Steven Patrick Pigott: 0
Fort Baker Capital, LLC: 0
(ii) Shared power to vote or to direct the vote:
Fort Baker Capital Management LP: 1,950,405
Steven Patrick Pigott: 1,950,405
Fort Baker Capital, LLC: 1,950,405
(iii) Sole power to dispose or to direct the disposition of:
Fort Baker Capital Management LP: 0
Steven Patrick Pigott: 0
Fort Baker Capital, LLC: 0
(iv) Shared power to dispose or to direct the disposition of:
Fort Baker Capital Management LP: 1,950,405
Steven Patrick Pigott: 1,950,405
Fort Baker Capital, LLC: 1,950,405
Item 5.
Ownership of 5 Percent or Less of a Class.
Not Applicable
Item 6.
Ownership of more than 5 Percent on Behalf of Another Person.
Not Applicable
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.
