Fort Baker Capital (OACC) reports 5.1% ownership of Oaktree III

Rhea-AI Filing Summary

Oaktree Acquisition Corp. III Life Sciences ownership disclosure: Fort Baker Capital Management LP and affiliated reporting persons state they beneficially own 1,000,000 Class A ordinary shares, representing 5.1% of the class. The filing cites 19,783,010 shares outstanding as of March 26, 2026. The reported holdings reflect shared voting and shared dispositive power over 1,000,000 shares; sole voting and dispositive power are reported as 0. The reporting persons say they are filing jointly but disclaim membership in a group and disclaim beneficial ownership except to the extent of any pecuniary interest.

Insights

Equity Ownership Analyst

Major investor discloses a 5.1% stake in Oaktree Acquisition III.

The Schedule 13G shows Fort Baker Capital Management LP directly holds 1,000,000 Class A ordinary shares, equal to 5.1% of the class using the issuer's stated outstanding share count of 19,783,010 as of March 26, 2026. The position is reported with shared voting and dispositive power, which indicates control is exercised jointly rather than by a single holder.

Key dependencies are the issuer's outstanding-share figure and the reporting persons' joint-filing statements. Subsequent filings could show changes in ownership or voting arrangements; future Schedule 13D/13G amendments would disclose material shifts.

Corporate Governance Specialist

Filing emphasizes joint reporting and disclaimers of group membership and broader beneficial ownership.

The filing explicitly states the reporting persons "are filing this jointly, but not as members of a group" and that each "disclaims beneficial ownership of the securities reported herein except to the extent of that person's pecuniary interest therein." That language limits how these holdings are attributed for governance analysis.

For governance implications, note the reported shared voting power and shared dispositive power of 1,000,000 shares. Any changes in voting arrangements or additional acquisitions would be material and should appear in subsequent schedules.

Key Figures

Reported shares beneficially owned: 1,000,000 shares Percent of class: 5.1% Shares outstanding (issuer): 19,783,010 shares

3 metrics

Reported shares beneficially owned 1,000,000 shares Direct holdings by Fort Baker Capital Management LP

Percent of class 5.1% Calculated using outstanding shares as of <date>March 26, 2026</date>

Shares outstanding (issuer) 19,783,010 shares Issuer-stated outstanding share count as of <date>March 26, 2026</date>

Key Terms

Schedule 13G, Shared dispositive power, Beneficially owned

3 terms

Schedule 13G regulatory

"Item 1. (a) Name of issuer: Oaktree Acquisition Corp. III Life Sciences"

A Schedule 13G is a formal document that investors file with the government when they acquire a large ownership stake in a company, usually for investment purposes rather than control. It helps keep the public informed about who owns significant parts of a company's shares, which can influence how the company is managed and how investors make decisions. Filing this schedule is important for transparency and understanding the ownership landscape of publicly traded companies.

Shared dispositive power financial

"Shared Dispositive Power 1,000,000.00"

Beneficially owned regulatory

"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.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

Oaktree Acquisition Corp. III Life Sciences

(Name of Issuer)

Class A ordinary shares, par value $0.0001 per share

(Title of Class of Securities)

G6717R104

(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): G6717R104

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 1,000,000.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 1,000,000.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,000,000.00

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)

5.1 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

CUSIP Number(s): G6717R104

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 1,000,000.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 1,000,000.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,000,000.00

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)

5.1 %

12

Type of Reporting Person (See Instructions)

IN

SCHEDULE 13G

CUSIP Number(s): G6717R104

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 1,000,000.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 1,000,000.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,000,000.00

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)

5.1 %

12

Type of Reporting Person (See Instructions)

HC

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Oaktree Acquisition Corp. III Life Sciences
(b)	Address of issuer's principal executive offices: 333 SOUTH GRAND AVENUE, 28TH FLOOR, LOS ANGELES, CALIFORNIA, 90071.
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, par value $0.0001 per share
(e)	CUSIP Number(s): G6717R104
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 1,000,000 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 26, 2026, in which the Issuer stated that the number of Class A ordinary shares outstanding was 19,783,010 as of March 26, 2026.
(b)	Percent of class: Fort Baker Capital Management LP: 5.1% Steven Patrick Pigott: 5.1% Fort Baker Capital, LLC: 5.1%
(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: 1,000,000 Steven Patrick Pigott: 1,000,000 Fort Baker Capital, LLC: 1,000,000
	(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: 1,000,000 Steven Patrick Pigott: 1,000,000 Fort Baker Capital, LLC: 1,000,000
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.

Fort Baker Capital Management LP

Signature:	/s/ Steven Patrick Pigott
Name/Title:	Steven Patrick Pigott, Chief Investment Officer
Date:	05/15/2026

Steven Patrick Pigott

Signature:	/s/ Steven Patrick Pigott
Name/Title:	Steven Patrick Pigott
Date:	05/15/2026

Fort Baker Capital, LLC

Signature:	/s/ Steven Patrick Pigott
Name/Title:	Steven Patrick Pigott, Chief Investment Officer
Date:	05/15/2026

FAQ

What stake does Fort Baker Capital report in Oaktree Acquisition Corp. III (OACC)?

Fort Baker Capital Management LP reports beneficial ownership of 1,000,000 Class A ordinary shares, equal to 5.1% of the class, per the Schedule 13G filing.

What share count does the filing use to calculate the 5.1% stake?

The percentage is calculated using the issuer's stated outstanding share count of 19,783,010 shares as of March 26, 2026, as cited in the filing.

How are voting and dispositive powers reported for these shares?

The filing reports 0 sole voting and dispositive power and 1,000,000 shares with shared voting and shared dispositive power among the reporting persons.

Do the reporting persons claim to be part of an investor group?

No. The filing states the reporting persons "are filing this jointly, but not as members of a group" and each disclaims group membership in the Schedule 13G.

Who are the reporting persons named in the Schedule 13G?

The filing lists Fort Baker Capital Management LP, Steven Patrick Pigott (Chief Investment Officer), and Fort Baker Capital, LLC as the reporting persons, with a common business address in Larkspur, CA.