W. R. Berkley (BSAA) discloses no beneficial ownership in BEST SPAC I shares

Rhea-AI Filing Summary

W. R. Berkley Corporation, together with subsidiary Berkley Insurance Company, reports holding 0 Class A ordinary shares of BEST SPAC I Acquisition Corp. and 0.0% of this class. The filing lists no sole or shared voting or dispositive power, confirming no current beneficial ownership.

Key Figures

Beneficially owned shares: 0 shares Percent of class: 0.0 % Sole voting power: 0 +2 more

5 metrics

Beneficially owned shares 0 shares Class A ordinary shares beneficially owned by W. R. Berkley Corporation

Percent of class 0.0 % Percentage of BEST SPAC I Class A ordinary shares owned

Sole voting power 0 Shares over which W. R. Berkley has sole voting power

Shared voting power 0 Shares over which W. R. Berkley has shared voting power

Signature date 08/05/2026 Date Richard M. Baio signed the Schedule 13G/A

Key Terms

beneficially owned, sole power to vote or to direct the vote, sole power to dispose or to direct the disposition, Ownership of 5 percent or less of a class, +1 more

5 terms

beneficially owned regulatory

"Item 4. | Ownership (a) | Amount beneficially owned: 0"

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.

sole power to vote or to direct the vote regulatory

"Number of shares as to which the person has | (i) Sole power to vote or to direct the vote: 0"

sole power to dispose or to direct the disposition regulatory

"(iii) Sole power to dispose or to direct the disposition of: 0"

Ownership of 5 percent or less of a class regulatory

"Item 5. | Ownership of 5 Percent or Less of a Class. | Ownership of 5 percent or less of a class"

Schedule 13G/A regulatory

"form_type": "SCHEDULE 13G/A"

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.

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

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Available on EDGAR 08/05/2026 - 05:30 PM Accepted by SEC EDGAR 08/05/2026 - 05:29 PM Learn about SEC filing dates

FAQ

What does W. R. Berkley’s Schedule 13G/A filing mean for BEST SPAC I (BSAA)?

The filing shows W. R. Berkley no longer has beneficial ownership of BEST SPAC I shares, reporting 0 shares and 0.0% of the Class A ordinary shares, with no voting or dispositive power.

How many BEST SPAC I (BSAA) shares does W. R. Berkley currently own?

W. R. Berkley reports owning 0 Class A ordinary shares of BEST SPAC I. The Schedule 13G/A lists no sole or shared voting or dispositive power over any shares, indicating no current beneficial stake.

What percentage of BEST SPAC I (BSAA) does W. R. Berkley report owning?

W. R. Berkley reports beneficial ownership of 0.0% of the Class A ordinary shares of BEST SPAC I. This reflects that it holds no shares and has no voting or dispositive power in the company’s equity class covered.

Which entities are included in W. R. Berkley’s 13G/A for BEST SPAC I (BSAA)?

The filing names W. R. Berkley Corporation and its subsidiary Berkley Insurance Company. Both are organized in Delaware and each reports 0 shares and 0.0% beneficial ownership in BEST SPAC I Class A shares.

What does “Ownership of 5 percent or less” mean in the BEST SPAC I (BSAA) 13G/A?

The filing checks the Ownership of 5 percent or less of a class item. Combined with the report of 0 shares and 0.0% ownership, it confirms W. R. Berkley is not a 5% shareholder in this class.

Who signed the W. R. Berkley Schedule 13G/A related to BEST SPAC I (BSAA)?

The Schedule 13G/A is signed by Richard M. Baio, serving as Executive Vice President and Chief Financial Officer and separately as Executive Vice President and Treasurer, both dated 08/05/2026.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 2)

BEST SPAC I Acquisition Corp.

(Name of Issuer)

Class A ordinary shares, no par value

(Title of Class of Securities)

G1069P103

(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 Number(s): G1069P103

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 0.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

0.00

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)

0.0 %

12

Type of Reporting Person (See Instructions)

CO

SCHEDULE 13G

CUSIP Number(s): G1069P103

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 0.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

0.00

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)

0.0 %

12

Type of Reporting Person (See Instructions)

CO, IC

SCHEDULE 13G

Item 1.
(a)	Name of issuer: BEST SPAC I Acquisition Corp.
(b)	Address of issuer's principal executive offices: 701, 7/Floor, United Building, 17-19 Jubilee Street, Hong Kong, Hong Kong
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, no par value
(e)	CUSIP No.: G1069P103
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: 0
(b)	Percent of class: 0 %
(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: 0
	(iii) Sole power to dispose or to direct the disposition of: 0
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	Ownership of 5 Percent or Less of a Class.
	Ownership of 5 percent or less of a class
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:	08/05/2026

Berkley Insurance Company

Signature:	/s/ Richard M. Baio
Name/Title:	Richard M. Baio/Executive Vice President and Treasurer
Date:	08/05/2026