Bain Capital GSS Investment Corp. ownership disclosure: Fort Baker Capital Management LP and related reporting persons state beneficial ownership of 3,981,252 Class A ordinary shares, equal to 8.5% of the class.
Shares outstanding were 46,900,000 as of March 16, 2026, per the issuer's Form 10-K cited in the filing.
Positive
None.
Negative
None.
Insights
Large passive stake disclosed by Fort Baker affiliates.
Fort Baker Capital Management LP, Steven Patrick Pigott and Fort Baker Capital, LLC report shared voting and dispositive power over 3,981,252 Class A shares, representing 8.5% of the class based on the issuer's cited outstanding share count.
The filing is a standard beneficial ownership disclosure under Schedule 13G/A; subsequent Form 13 filings could update the position if holdings change.
Key Figures
Beneficially owned shares:3,981,252 sharesPercent of class:8.5%Shares outstanding:46,900,000 shares
3 metrics
Beneficially owned shares3,981,252 sharesAmount held by Fort Baker Capital Management LP and related reporting persons
Percent of class8.5%Percent of Class A ordinary shares based on outstanding share count cited in filing
Shares outstanding46,900,000 sharesClass A ordinary shares outstanding as of March 16, 2026 (per issuer Form 10-K)
Key Terms
Schedule 13G/A, Beneficially owned, Shared voting power, Disclaims membership in a group
4 terms
Schedule 13G/Aregulatory
"Amendment No. 1 and header identifying the filing type"
A Schedule 13G/A is an amended public filing with the U.S. securities regulator that updates a previous Schedule 13G, disclosing when an individual or group holds a substantial (typically over 5%) stake in a company and is claiming a passive, non‑controlling intent. Investors monitor these updates because rising or falling holdings can signal changing confidence, potential future moves, or shifts in voting power — like watching a public ledger where large shareholders quietly adjust their positions.
Beneficially ownedregulatory
"Amount beneficially owned: Reference is hereby made to Items 5-9 of this Schedule"
Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.
Shared voting powerregulatory
"Shared Voting Power 3,981,252.00 listed for the reporting persons"
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.
Disclaims membership in a groupregulatory
"The Reporting Persons are filing this jointly, but not as members of a group, and each disclaims membership in a group"
What stake does Fort Baker Capital report in BCSS?
Fort Baker Capital Management LP reports beneficial ownership of 3,981,252 Class A shares, representing 8.5% of the class. The figures are presented jointly by Fort Baker entities and Steven Patrick Pigott in the Schedule 13G/A amendment.
How was the 8.5% ownership percentage calculated for BCSS?
The filing states the percentage was derived from the issuer's annual report on Form 10-K, which reported 46,900,000 Class A ordinary shares outstanding as of March 16, 2026; that outstanding count underlies the 8.5% calculation.
Who holds voting and dispositive power over the reported BCSS shares?
The Schedule 13G/A shows shared voting power and shared dispositive power of 3,981,252 shares among Fort Baker Capital Management LP, Steven Patrick Pigott and Fort Baker Capital, LLC, with no sole voting or sole dispositive power reported.
Does this filing indicate control or group status for BCSS holdings?
The reporting persons state they are filing jointly but explicitly disclaim membership in a group and disclaim beneficial ownership except to the extent of their pecuniary interest; no group-control claim is asserted in the amendment.
What address and CUSIP are listed for the BCSS filing?
The issuer's principal executive office is listed as 200 Clarendon Street, Boston, Massachusetts 02116, and the reported CUSIP for the Class A ordinary shares is G0R78B106, as shown on the Schedule 13G/A amendment.
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
(Amendment No. 1)
Bain Capital GSS Investment Corp.
(Name of Issuer)
Class A Ordinary Shares, $0.0001 par value
(Title of Class of Securities)
G0R78B106
(CUSIP Number)
03/31/2026
(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 Number(s):
G0R78B106
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
3,981,252.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
3,981,252.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
3,981,252.00
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)
8.5 %
12
Type of Reporting Person (See Instructions)
IA
SCHEDULE 13G
CUSIP Number(s):
G0R78B106
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
3,981,252.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
3,981,252.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
3,981,252.00
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)
8.5 %
12
Type of Reporting Person (See Instructions)
IN
SCHEDULE 13G
CUSIP Number(s):
G0R78B106
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
3,981,252.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
3,981,252.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
3,981,252.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
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, $0.0001 par value
(e)
CUSIP No.:
G0R78B106
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 3,981,252 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 of percentage of beneficial ownership in Item 11 was derived from the Issuer's annual report on Form 10-K filed with the Securities and Exchange Commission on March 20, 2026, in which the Issuer stated that the number of Class A ordinary shares outstanding was 46,900,000 as of March 16, 2026.
(b)
Percent of class:
Fort Baker Capital Management LP: 8.5%
Steven Patrick Pigott: 8.5%
Fort Baker Capital, LLC: 8.5%
(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: 3,981,252
Steven Patrick Pigott: 3,981,252
Fort Baker Capital, LLC: 3,981,252
(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: 3,981,252
Steven Patrick Pigott: 3,981,252
Fort Baker Capital, LLC: 3,981,252
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.
