# EDGAR Filing Document

**Accession Number:** 0000011544
**File Stem:** 0001193125-26-170602
**Filing Date:** 2026-4
**Character Count:** 4444
**Document Hash:** 1e77f51213aaf09e445701ebe1ad9afd
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-170602.hdr.sgml**: 20260422

**ACCESSION NUMBER**: 0001193125-26-170602

**CONFORMED SUBMISSION TYPE**: DEFA14A

**PUBLIC DOCUMENT COUNT**: 3

**FILED AS OF DATE**: 20260422

**DATE AS OF CHANGE**: 20260422

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** BERKLEY W R CORP
- **CENTRAL INDEX KEY:** 0000011544
- **STANDARD INDUSTRIAL CLASSIFICATION:** FIRE, MARINE & CASUALTY INSURANCE [6331]
- **ORGANIZATION NAME:** 02 Finance
- **EIN:** 221867895
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** DEFA14A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-15202
- **FILM NUMBER:** 26884314

**BUSINESS ADDRESS:**
- **STREET 1:** 475 STEAMBOAT ROAD
- **STREET 2:** .
- **CITY:** GREENWICH
- **STATE:** CT
- **ZIP:** 06830
- **BUSINESS PHONE:** 2036293000

**MAIL ADDRESS:**
- **STREET 1:** 475 STEAMBOAT ROAD
- **STREET 2:** .
- **CITY:** GREENWICH
- **STATE:** CT
- **ZIP:** 06830

**SCHEDULE 14A INFORMATION** 

**PROXY STATEMENT PURSUANT TO SECTION 14(A) OF THE** 

**SECURITIES EXCHANGE ACT OF 1934** 

**(AMENDMENT NO.)** 

Filed by the Registrant ☒

Filed by a Party other than the Registrant ☐

Check the appropriate box:

☐ Preliminary Proxy Statement

☐ **Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))** 

☐ Definitive Proxy Statement

☒ Definitive Additional Materials

☐ Soliciting Material Pursuant to Section 240.14a-12

**W. R. BERKLEY CORPORATION** 

**(Name of Registrant as Specified In Its Charter)** 

**(Name of Person(s) Filing Proxy Statement, if other than Registrant)** 

Payment of Filing Fee (Check all boxes that apply):

☒ No fee required

☐ Fee paid previously with preliminary materials

☐ Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11

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![LOGO](g141868dsp001.jpg)

Your Vote Counts! W. R. BERKLEY CORPORATION 2026 Annual Meeting Vote by June 2, 2026 11:59 PM ET. For shares held in a Plan, vote by May 31, 2026 11:59 PM ET. W. R. BERKLEY CORPORATION ATTN: PHILIP S. WELT, SECRETARY 475 STEAMBOAT ROAD GREENWICH, CT 06830 V87349-P48366 You invested in W. R. BERKLEY CORPORATION and it's time to vote! You have the right to vote on proposals being presented at the Annual Meeting. This is an important notice regarding the availability of proxy materials for the stockholder meeting to be held on June 3, 2026. Get informed before you vote View the Notice and Proxy Statement and 2025 Annual Report online OR you can receive a free paper or email copy of the material(s) by requesting prior to May 20, 2026. If you would like to request a copy of the material(s) for this and/or future stockholder meetings, you may (1) visit www.ProxyVote.com, (2) call 1-800-579-1639 or (3) send an email to sendmaterial@proxyvote.com. If sending an email, please include your control number (indicated below) in the subject line. Unless requested, you will not otherwise receive a paper or email copy. For complete information and to vote, visit www.ProxyVote.com Control # Smartphone users Vote Virtually at the Meeting\* Point your camera here and June 3, 2026 1:30 PM EDT vote without entering a control number Virtually at: www.virtualshareholdermeeting.com/WRB2026 \*Please check the meeting materials for any special requirements for meeting attendance.

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![LOGO](g141868dsp002.jpg)

Vote at www.ProxyVote.com THIS IS NOT A VOTABLE BALLOT This is an overview of the proposals being presented at the upcoming stockholder meeting. Please follow the instructions on the reverse side to vote these important matters. Board Voting Items Recommends 1. Election of Directors Nominees: 1a. W. Robert Berkley, Jr. For 1b. María Luisa Ferré For 1c. Daniel L. Mosley For 1d. Robert A. Rusbuldt For 1e. Andrew J. Carrier For 2. Non-binding advisory vote on a resolution approving the compensation of the Company's named executive officers For pursuant to the compensation disclosure rules of the Securities and Exchange Commission, or "say-on-pay" vote. 3. Ratification of the appointment of KPMG LLP as the independent registered public accounting firm for the Company For for the fiscal year ending December 31, 2026. NOTE: Such other business as may properly come before the meeting or any adjournment thereof. Prefer to receive an email instead? While voting on www.ProxyVote.com, be sure to click "Delivery Settings". V87350-P48366