MITSUI SUMITOMO INSURANCE CO LTD

Holdings History for BERKLEY W R CORP - Common Stock, par value $0.20 per share (WRB)

Symbol: WRB on NYSE
Investment type: Equity / Common Stock, par value $0.20 per share
Latest Disclosed Shares Owned: 58,780,450 shares
Security Ownership %: 16%

Shares, Excluding Options vs Price

Value, Excluding Options

Mitsui Sumitomo Insurance Co., Ltd. ownership in BERKLEY W R CORP Common Stock, par value $0.20 per share (WRB)

05 Mar 2026 - Mitsui Sumitomo Insurance Co., Ltd. has filed an SCHEDULE 13D/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 58,780,450 shares of BERKLEY W R CORP Common Stock, par value $0.20 per share (WRB). This represents 16% ownership of the company. In their previous filing dated 06 Feb 2026, MITSUI SUMITOMO INSURANCE CO LTD had reported owning 56,458,656 shares, indicating an increase of +4.1%. .

Reporting Name	Ownership %	Change	Value $	Shares owned	Change	Activity %	Price	Form	Report date	Filing time
Mitsui Sumitomo Insurance Co., Ltd.	16%	+5.3%	$4,205,153,393	58,780,450	+2,321,794	+4.1%	$71.54	13D/A	04 Mar 2026	05 Mar 2026, 07:00
Mitsui Sumitomo Insurance Co., Ltd.	15%	+7.1%	$3,879,274,254	56,458,656	+3,732,152	+7.1%	$68.71	13D/A	05 Feb 2026	06 Feb 2026, 20:45
Mitsui Sumitomo Insurance Co., Ltd.	14%	+8.5%	$3,697,182,460	52,726,504	+4,124,916	+8.5%	$70.12	13D/A	13 Jan 2026	14 Jan 2026, 21:51
Mitsui Sumitomo Insurance Co., Ltd.	13%		$3,740,378,212	48,601,588			$76.96	13D	04 Dec 2025	11 Dec 2025, 17:03

Holdings date	Option	Weight	Change	Value $	Shares	Change	Activity %	Price	All Holders
31 Dec 2025		100%	0%	$3,542,918,951	50,526,511	0		$70.12	Q4 2025

* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.