    <SEC-DOCUMENT>0001193125-23-127073-index.html : 20230428
    <SEC-HEADER>0001193125-23-127073.hdr.sgml : 20230428
    <ACCEPTANCE-DATETIME>20230428162252
    ACCESSION NUMBER:		0001193125-23-127073
    CONFORMED SUBMISSION TYPE:	DEFA14A
    PUBLIC DOCUMENT COUNT:		3
    FILED AS OF DATE:		20230428
    DATE AS OF CHANGE:		20230428

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			BERKLEY W R CORP
    		CENTRAL INDEX KEY:			0000011544
    		STANDARD INDUSTRIAL CLASSIFICATION:	FIRE, MARINE & CASUALTY INSURANCE [6331]
    		IRS NUMBER:				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:		23866747

    	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
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>DEFA14A
    <SEQUENCE>1
    <FILENAME>d459072ddefa14a.htm
    <DESCRIPTION>DEFA14A
    <TEXT>
    Document 1 - file: d459072ddefa14a.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>2
    <FILENAME>g459072g06a66.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 2 - file: g459072g06a66.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>g459072g07b77.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 3 - file: g459072g07b77.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>