W.R. Berkley Form 144 reveals $3.7M proposed insider sale

Rhea-AI Filing Summary

W.R. Berkley Corp. (WRB) – Form 144 filing: An insider has filed notice to sell up to 53,375 common shares through J.P. Morgan Securities on or about 28 Jul 2025 on the NYSE. The shares carry an aggregate market value of roughly $3.67 million. With 379.36 million shares outstanding, the planned disposition equals only ~0.014 % of total shares, indicating limited dilution or price impact.

• Stock was acquired via equity-compensation grants made annually from 2017-2024.
• No sales have been recorded by this filer during the past three months.
• The filer certifies possession of no undisclosed adverse information.

The Form 144 is a preliminary notice; the trade may or may not be executed, but it signals a modest insider liquidity event that investors may monitor for sentiment cues.

Positive

• None.

Negative

• Insider plans to liquidate $3.67 million in shares, which, while small, may be viewed negatively by investors sensitive to insider sentiment.

Insights

Equity Research Analyst

TL;DR: Small insider sale (~$3.7 M, 0.014 % float) is immaterial to WRB’s fundamentals.

The proposed sale is minor relative to WRB’s market cap and float, so it should not materially affect valuation or liquidity. Absence of additional insider selling in the prior three months lessens concern about broader negative sentiment. Investors may interpret the sale as routine diversification by a compensated executive rather than a signal on future performance.

Corporate Governance Specialist

TL;DR: Routine Form 144; governance risk low, but watch execution volume.

The shares were earned through compensation, aligning with typical insider liquidity planning. Certification that no undisclosed adverse information exists reduces regulatory risk. Given the tiny percentage of shares involved, governance impact is neutral; nonetheless, tracking follow-through sales and any subsequent filings helps gauge insider outlook.

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK
Filer CCC
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.

Relationship to Issuer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	J.P. Morgan Securities LLC 390 Madison Avenue 6th Floor New York NY 10017	53375	3673268	379355841	07/28/2025	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	06/12/2024	Compensation	Issuer			3801	06/12/2024	NA
Common	06/14/2023	Compensation	Issuer			5219	06/14/2023	NA
Common	06/15/2022	Compensation	Issuer			4493	06/15/2022	NA
Common	06/15/2021	Compensation	Issuer			5967	06/15/2021	NA
Common	06/11/2020	Compensation	Issuer			7838	06/11/2020	NA
Common	06/05/2019	Compensation	Issuer			7091	06/05/2019	NA
Common	05/31/2018	Compensation	Issuer			8841	05/31/2018	NA
Common	05/17/2017	Compensation	Issuer			10125	05/17/2017	NA

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Nothing to Report

144: Remarks and Signature

Remarks

Date of Notice

ATTENTION:

The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.

Signature

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

How many WRB shares are proposed for sale?

The Form 144 covers 53,375 common shares.

What is the estimated market value of the WRB shares to be sold?

The aggregate market value is approximately $3.67 million.

When is the anticipated sale date for these WRB shares?

The filer lists an approximate sale date of 28 July 2025.

What percentage of WRB’s shares outstanding does the sale represent?

About 0.014 % of WRB’s 379.36 million shares.

Were there any insider WRB share sales in the prior three months?

The filing states “Nothing to Report” for sales in the last three months.

Through which broker will the WRB shares be sold?

The broker listed is J.P. Morgan Securities LLC.