MITSUI SUMITOMO INSURANCE CO LTD purchased 1.9% of their position (1.03M shares) of BERKLEY W R CORP on the open market

Open‑market purchase worth $69.30M — a small addition. The strongest form of insider conviction signal.

P · 9 purchases

MITSUI SUMITOMO INSURANCE CO LTD

Filed: 1/28/2026ACC: 0001193125-26-027858

InsiderMITSUI SUMITOMO INSURANCE CO LTDCIK 1142206

→

IssuerBERKLEY W R CORPCIK 11544

10% Owner

Since Mar 2026

+1.03M

Net shares

Net buyer

$69.30M

Total acquired

Open market trades

9B · 0S

Total transactions

1.03M acquired

Non-Derivative Transactions9

Common Stock

Direct

P · Purchase

+293.61K

Price / share

$66.86

Trade value

$19.63M

% of position

0.5%

1/26/2026

54.59M→54.88M

Common Stock

Direct

P · Purchase

+76.39K

Price / share

$67.88

Trade value

$5.19M

% of position

0.1%

1/26/2026

54.88M→54.96M

Common Stock

Direct

P · Purchase

+800.00

Price / share

$65.86

Trade value

$52.69K

% of position

0.0%

1/27/2026

54.96M→54.96M

Common Stock

Direct

P · Purchase

+11.99K

Price / share

$66.87

Trade value

$801.52K

% of position

0.0%

1/27/2026

54.96M→54.97M

Common Stock

Direct

P · Purchase

+325.96K

Price / share

$67.40

Trade value

$21.97M

% of position

0.6%

1/27/2026

54.97M→55.30M

Common Stock

Direct

P · Purchase

+8.58K

Price / share

$68.56

Trade value

$588.39K

% of position

0.0%

1/27/2026

55.30M→55.31M

Common Stock

Direct

P · Purchase

+2.67K

Price / share

$69.04

Trade value

$184.39K

% of position

0.0%

1/27/2026

55.31M→55.31M

Common Stock

Direct

P · Purchase

+280.35K

Price / share

$67.58

Trade value

$18.95M

% of position

0.5%

1/28/2026

55.31M→55.59M

Common Stock

Direct

P · Purchase

+28.58K

Price / share

$67.89

Trade value

$1.94M

% of position

0.1%

1/28/2026

55.59M→55.62M

Total

Net shares

+1.03M

Net value

$69.30M

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Stock Direct	1/26/2026	P · Purchase	+293.61K	$66.86	$19.63M	0.5%	54.59M	54.88M
Common Stock Direct	1/26/2026	P · Purchase	+76.39K	$67.88	$5.19M	0.1%	54.88M	54.96M
Common Stock Direct	1/27/2026	P · Purchase	+800.00	$65.86	$52.69K	0.0%	54.96M	54.96M
Common Stock Direct	1/27/2026	P · Purchase	+11.99K	$66.87	$801.52K	0.0%	54.96M	54.97M
Common Stock Direct	1/27/2026	P · Purchase	+325.96K	$67.40	$21.97M	0.6%	54.97M	55.30M
Common Stock Direct	1/27/2026	P · Purchase	+8.58K	$68.56	$588.39K	0.0%	55.30M	55.31M
Common Stock Direct	1/27/2026	P · Purchase	+2.67K	$69.04	$184.39K	0.0%	55.31M	55.31M
Common Stock Direct	1/28/2026	P · Purchase	+280.35K	$67.58	$18.95M	0.5%	55.31M	55.59M
Common Stock Direct	1/28/2026	P · Purchase	+28.58K	$67.89	$1.94M	0.1%	55.59M	55.62M
Total			+1.03M		$69.30M

Derivative Transactions0

No derivative transactions reported