W. R. Berkley reports 6.2% stake in Launch One

Launch One Acquisition Corp. reported that W. R. Berkley Corporation and its subsidiary Berkley Insurance Company beneficially own 1,423,290 Class A ordinary shares, equal to 6.2% of the class as of the event date.

Accepted by SEC EDGAR 02/10/2026 - 09:15 PM EST Learn about SEC filing dates

Rhea-AI Filing Summary

Launch One Acquisition Corp. reported that W. R. Berkley Corporation and its subsidiary Berkley Insurance Company beneficially own 1,423,290 Class A ordinary shares, equal to 6.2% of the class as of the event date. The shares carry shared, but not sole, voting and dispositive power.

The filing states the position was acquired and is held in the ordinary course of business and not for the purpose of changing or influencing control of Launch One Acquisition Corp.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many Launch One (LPAA) shares does W. R. Berkley beneficially own?

W. R. Berkley Corporation reports beneficial ownership of 1,423,290 Class A ordinary shares of Launch One Acquisition Corp. This stake is disclosed as of the reported event date and reflects the combined position with its subsidiary, Berkley Insurance Company.

What percentage of Launch One (LPAA) does W. R. Berkley own according to the Schedule 13G?

The filing shows W. R. Berkley Corporation beneficially owns 6.2% of Launch One Acquisition Corp.’s Class A shares. This percentage is based on 1,423,290 shares and indicates a significant, but minority, ownership position in the company’s outstanding Class A ordinary shares.

Does W. R. Berkley have sole or shared voting power over Launch One (LPAA) shares?

The Schedule 13G states W. R. Berkley has 0 shares with sole voting power and 1,423,290 shares with shared voting power. The same amounts apply to dispositive power, indicating decisions are made jointly rather than by W. R. Berkley alone.

Which entities are listed as reporting persons in the Launch One (LPAA) Schedule 13G?

The filing lists W. R. Berkley Corporation and its subsidiary Berkley Insurance Company as reporting persons. Both entities are organized in Delaware and each is shown as beneficially owning 1,423,290 Launch One Acquisition Corp. Class A ordinary shares.

What is W. R. Berkley’s stated intent regarding control of Launch One (LPAA)?

The certification states the securities were acquired and are held in the ordinary course of business and not for the purpose of changing or influencing control of Launch One Acquisition Corp., nor in connection with any transaction intended to have that effect.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

Launch One Acquisition Corp.

(Name of Issuer)

Class A Ordinary Shares, par value $0.0001 per share

(Title of Class of Securities)

G5S86M100

(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. G5S86M100

1

Names of Reporting Persons

W. R. Berkley Corporation

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 1,423,290.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 1,423,290.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,423,290.00

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)

6.2 %

12

Type of Reporting Person (See Instructions)

CO

SCHEDULE 13G

CUSIP No. G5S86M100

1

Names of Reporting Persons

Berkley Insurance Company

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 1,423,290.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 1,423,290.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,423,290.00

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)

6.2 %

12

Type of Reporting Person (See Instructions)

CO, IC

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Launch One Acquisition Corp.
(b)	Address of issuer's principal executive offices: 180 Grand Avenue, Suite 1530, Oakland, CA, 94612
Item 2.
(a)	Name of person filing: W. R. Berkley Corporation
(b)	Address or principal business office or, if none, residence: 475 Steamboat Road Greenwich, CT 06830
(c)	Citizenship: US
(d)	Title of class of securities: Class A Ordinary Shares, par value $0.0001 per share
(e)	CUSIP No.: G5S86M100
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: 1,423,290
(b)	Percent of class: 6.2 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 0
	(ii) Shared power to vote or to direct the vote: 1,423,290
	(iii) Sole power to dispose or to direct the disposition of: 0
	(iv) Shared power to dispose or to direct the disposition of: 1,423,290
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.
	If a parent holding company has filed this schedule, pursuant to Rule 13d-1(b)(ii)(G), so indicate under Item 3(g) and attach an exhibit stating the identity and the Item 3 classification of the relevant subsidiary. If a parent holding company has filed this schedule pursuant to Rule 13d-1(c) or Rule 13d-1(d), attach an exhibit stating the identification of the relevant subsidiary. See Exhibit 99.1
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.

W. R. Berkley Corporation

Signature:	/s/ Richard M. Baio
Name/Title:	Richard M. Baio/Executive Vice President and Chief Financial Officer
Date:	02/10/2026

Berkley Insurance Company

Signature:	/s/ Richard M. Baio
Name/Title:	Richard M. Baio/Executive Vice President and Treasurer
Date:	02/10/2026