W.R. Berkley reports 229,948 shares (7.9%)

W. R. Berkley Corporation filed a Schedule 13G reporting beneficial ownership of 229,948 shares of Class A ordinary shares of Cantor Equity Partners III, Inc., equal to 7.9% of the class.

Rhea-AI Filing Summary

W. R. Berkley Corporation filed a Schedule 13G reporting beneficial ownership of 229,948 shares of Class A ordinary shares of Cantor Equity Partners III, Inc., equal to 7.9% of the class. The filing shows shared voting power 229,948 and shared dispositive power 229,948.

The filing is signed by Richard M. Baio as Executive Vice President and Chief Financial Officer and Treasurer; the filing identifies Berkley Insurance Company in the ownership structure.

Key Figures

Beneficial ownership: 229,948 shares Percent of class: 7.9% Shared voting/dispositive power: 229,948 shares

3 metrics

Beneficial ownership 229,948 shares Amount beneficially owned reported in Item 4

Percent of class 7.9% Percent of Class A ordinary shares reported in Item 4

Shared voting/dispositive power 229,948 shares Shared voting power and shared dispositive power reported in Item 4

Key Terms

Schedule 13G, beneficial ownership, shared dispositive power

3 terms

Schedule 13G regulatory

"Item 1. (a) Name of issuer: CANTOR EQUITY PARTNERS III, INC."

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.

beneficial ownership regulatory

"Item 4. (a) Amount beneficially owned: 229,948 (b) Percent of class: 7.9 %"

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 dispositive power regulatory

"Item 4. (iv) Shared power to dispose or to direct the disposition of: 229,948"

FAQ

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

What stake does W.R. Berkley hold in Cantor Equity Partners III (CAEP)?

W.R. Berkley reports beneficial ownership of 229,948 shares, representing 7.9% of Class A ordinary shares. The filing lists shared voting and shared dispositive power of 229,948, indicating aggregated ownership through related entities.

Which entities are named as holders in the Schedule 13G for CAEP?

The filing names W. R. Berkley Corporation as the filer and lists Berkley Insurance Company in the ownership structure. Signatures are by Richard M. Baio in officer roles, dated 05/07/2026.

Does the Schedule 13G show sole voting or dispositive power for W.R. Berkley?

No. The filing reports 0 sole voting power and 0 sole dispositive power, with 229,948 shared voting power and 229,948 shared dispositive power over the reported shares.

What class of Cantor Equity Partners III stock is reported in the filing?

The filing covers Class A ordinary shares, par value $0.0001 per share, CUSIP G1828A108. The reported amount is tied specifically to this class of common stock.

When was the Schedule 13G signed and who signed it for W.R. Berkley?

The Schedule 13G is signed by Richard M. Baio as Executive Vice President and Chief Financial Officer and Treasurer, with signature dates shown as 05/07/2026.

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

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Accepted by SEC EDGAR 05/07/2026 - 05:14 PM EDT Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

CANTOR EQUITY PARTNERS III, INC.

(Name of Issuer)

Class A ordinary shares, par value $0.0001 per share

(Title of Class of Securities)

G1828A108

(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): G1828A108

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 229,948.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 229,948.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

229,948.00

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)

7.9 %

12

Type of Reporting Person (See Instructions)

CO

SCHEDULE 13G

CUSIP Number(s): G1828A108

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 229,948.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 229,948.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

229,948.00

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)

7.9 %

12

Type of Reporting Person (See Instructions)

CO, IC

SCHEDULE 13G

Item 1.
(a)	Name of issuer: CANTOR EQUITY PARTNERS III, INC.
(b)	Address of issuer's principal executive offices: 110 East 59th Street, New York, New York, 10022
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 Number(s): G1828A108
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: 229,948
(b)	Percent of class: 7.9 %
(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: 229,948
	(iii) Sole power to dispose or to direct the disposition of: 0
	(iv) Shared power to dispose or to direct the disposition of: 229,948
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:	05/07/2026

Berkley Insurance Company

Signature:	/s/ Richard M. Baio
Name/Title:	Richard M. Baio/Executive Vice President and Treasurer
Date:	05/07/2026