United States Insurance

W R Berkley Corp (WRB)

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W R Berkley Corp experienced significant insider activity between February 19, 2026, and March 3, 2026. During this period, Mitsui Sumitomo Insurance Co Ltd executed a series of planned purchases, acquiring a substantial number of shares. No insider trading activity has been reported in the last three months.
Ticker: WRB Exchange: NYS
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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Buy signal Sell signal Earnings
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Insider trades have triggered activity signals for W R Berkley Corp. Upgrade to see score, net flow, insiders and the full signal context.

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Top insiders
Trades
Planned buy 3 Mar 2026
Value US$451,373.41 | Price 101.74 | Shares 4,852 (-40.6%)
Planned buy 3 Mar 2026
Value US$2,422,948.51 | Price 426.49 | Shares 78,470 (+12.9%)
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value 		Number of shares Price Value Details
2026-03-03 2026-03-03 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
4,852 -40.6%
101.74
US$451,373 		4,852 -40.6% 101.74 US$451,373
2026-03-03 2026-03-03 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
78,470 +12.9%
426.49
US$2,422,949 		78,470 +12.9% 426.49 US$2,422,949
2026-03-03 2026-03-02 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
56,975 -39.9%
69.89
US$236,454 		56,975 -39.9% 69.89 US$236,454
2026-03-03 2026-03-02 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
45,103 +0.1%
72.29
US$3,260,288 		45,103 +0.1% 72.29 US$3,260,288
2026-02-27 2026-02-27 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
147,000 +0.3%
71.63
US$10,528,963 		147,000 +0.3% 71.63 US$10,528,963
2026-02-27 2026-02-26 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
7,509 +0.0%
72.11
US$541,504 		7,509 +0.0% 72.11 US$541,504
2026-02-27 2026-02-26 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
145,491 +0.2%
71.65
US$10,423,848 		145,491 +0.2% 71.65 US$10,423,848
2026-02-25 2026-02-25 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
14,356 +0.0%
71.77
US$1,030,336 		14,356 +0.0% 71.77 US$1,030,336
2026-02-25 2026-02-25 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
154,512 +0.3%
71.39
US$11,030,874 		154,512 +0.3% 71.39 US$11,030,874
2026-02-25 2026-02-24 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
61,594 +0.1%
71.28
US$4,390,642 		61,594 +0.1% 71.28 US$4,390,642
2026-02-25 2026-02-24 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
103,192 +0.2%
70.52
US$7,277,430 		103,192 +0.2% 70.52 US$7,277,430
2026-02-25 2026-02-23 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
16,410 +0.0%
71.80
US$1,178,305 		16,410 +0.0% 71.80 US$1,178,305
2026-02-25 2026-02-23 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
203,590 +0.4%
71.09
US$14,473,844 		203,590 +0.4% 71.09 US$14,473,844
2026-02-20 2026-02-20 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
160,582 +0.3%
70.80
US$11,369,944 		160,582 +0.3% 70.80 US$11,369,944
2026-02-20 2026-02-19 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
44,014 +0.1%
71.50
US$3,146,785 		44,014 +0.1% 71.50 US$3,146,785
2026-02-20 2026-02-19 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
300,986 +0.5%
70.53
US$21,227,730 		300,986 +0.5% 70.53 US$21,227,730
2026-02-18 2026-02-18 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
45,250 +0.1%
70.96
US$3,210,908 		45,250 +0.1% 70.96 US$3,210,908
2026-02-18 2026-02-18 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
239,750 +0.4%
70.58
US$16,922,730 		239,750 +0.4% 70.58 US$16,922,730
2026-02-18 2026-02-17 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
281,386 +0.5%
71.19
US$20,032,854 		281,386 +0.5% 71.19 US$20,032,854
2026-02-13 2026-02-13 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
280 +0.0%
71.18
US$19,932 		280 +0.0% 71.18 US$19,932
2026-02-13 2026-02-13 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
4,314 +0.0%
70.30
US$303,264 		4,314 +0.0% 70.30 US$303,264
2026-02-13 2026-02-13 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
15,406 +0.0%
69.73
US$1,074,336 		15,406 +0.0% 69.73 US$1,074,336
2026-02-13 2026-02-12 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
2,401 +0.0%
72.76
US$174,690 		2,401 +0.0% 72.76 US$174,690
2026-02-13 2026-02-12 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
17,599 +0.0%
71.88
US$1,265,030 		17,599 +0.0% 71.88 US$1,265,030
2026-02-11 2026-02-11 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
11,163 +0.0%
71.45
US$797,589 		11,163 +0.0% 71.45 US$797,589
2026-02-11 2026-02-11 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
3,578 +0.0%
70.50
US$252,266 		3,578 +0.0% 70.50 US$252,266
2026-02-11 2026-02-11 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
9,289 +0.0%
69.59
US$646,400 		9,289 +0.0% 69.59 US$646,400
2026-02-11 2026-02-10 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
12,082 +0.0%
69.92
US$844,787 		12,082 +0.0% 69.92 US$844,787
2026-02-11 2026-02-10 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
21,884 +0.0%
69.09
US$1,511,904 		21,884 +0.0% 69.09 US$1,511,904
2026-02-11 2026-02-09 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
4,048 +0.0%
70.32
US$284,653 		4,048 +0.0% 70.32 US$284,653
2026-02-11 2026-02-09 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
35,952 +0.1%
69.27
US$2,490,553 		35,952 +0.1% 69.27 US$2,490,553
2026-02-06 2026-02-06 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
4,306 +0.0%
71.39
US$307,412 		4,306 +0.0% 71.39 US$307,412
2026-02-06 2026-02-06 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
15,694 +0.0%
70.46
US$1,105,812 		15,694 +0.0% 70.46 US$1,105,812
2026-02-06 2026-02-05 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
13,472 +0.0%
71.25
US$959,918 		13,472 +0.0% 71.25 US$959,918
2026-02-06 2026-02-05 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
6,528 +0.0%
70.79
US$462,110 		6,528 +0.0% 70.79 US$462,110
2026-02-04 2026-02-04 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
22,415 +0.0%
70.25
US$1,574,717 		22,415 +0.0% 70.25 US$1,574,717
2026-02-04 2026-02-04 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
2,585 +0.0%
69.77
US$180,343 		2,585 +0.0% 69.77 US$180,343
2026-02-04 2026-02-04 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
22,415 +0.0%
70.25
US$1,574,717 		22,415 +0.0% 70.25 US$1,574,717
2026-02-04 2026-02-04 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
2,585 +0.0%
69.77
US$180,343 		2,585 +0.0% 69.77 US$180,343
2026-02-04 2026-02-03 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
31,653 +0.1%
68.87
US$2,179,904 		31,653 +0.1% 68.87 US$2,179,904
2026-02-04 2026-02-03 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
8,347 +0.0%
67.75
US$565,498 		8,347 +0.0% 67.75 US$565,498
2026-02-04 2026-02-03 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
31,653 +0.1%
68.87
US$2,179,904 		31,653 +0.1% 68.87 US$2,179,904
2026-02-04 2026-02-03 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
8,347 +0.0%
67.75
US$565,498 		8,347 +0.0% 67.75 US$565,498
2026-02-04 2026-02-02 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
13,159 +0.0%
68.42
US$900,301 		13,159 +0.0% 68.42 US$900,301
2026-02-04 2026-02-02 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
13,159 +0.0%
68.42
US$900,301 		13,159 +0.0% 68.42 US$900,301
2026-02-04 2026-02-02 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
237,062 +0.4%
67.71
US$16,051,136 		237,062 +0.4% 67.71 US$16,051,136
2026-01-30 2026-01-30 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
195,000 +0.3%
68.36
US$13,330,414 		195,000 +0.3% 68.36 US$13,330,414
2026-01-30 2026-01-29 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
27,718 +0.0%
68.56
US$1,900,360 		27,718 +0.0% 68.56 US$1,900,360
2026-01-30 2026-01-29 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
262,282 +0.5%
68.08
US$17,856,578 		262,282 +0.5% 68.08 US$17,856,578
2026-01-28 2026-01-28 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
28,577 +0.1%
67.89
US$1,940,193 		28,577 +0.1% 67.89 US$1,940,193
2026-01-28 2026-01-28 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
280,354 +0.5%
67.58
US$18,945,090 		280,354 +0.5% 67.58 US$18,945,090
2026-01-28 2026-01-27 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
2,671 +0.0%
69.04
US$184,393 		2,671 +0.0% 69.04 US$184,393
2026-01-28 2026-01-27 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
8,582 +0.0%
68.56
US$588,391 		8,582 +0.0% 68.56 US$588,391
2026-01-28 2026-01-27 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
325,960 +0.6%
67.40
US$21,970,877 		325,960 +0.6% 67.40 US$21,970,877
2026-01-28 2026-01-27 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
11,987 +0.0%
66.87
US$801,520 		11,987 +0.0% 66.87 US$801,520
2026-01-28 2026-01-27 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
800 +0.0%
65.86
US$52,689 		800 +0.0% 65.86 US$52,689
2026-01-28 2026-01-26 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
76,389 +0.1%
67.88
US$5,185,056 		76,389 +0.1% 67.88 US$5,185,056
2026-01-28 2026-01-26 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
293,611 +0.5%
66.86
US$19,629,481 		293,611 +0.5% 66.86 US$19,629,481
2026-01-23 2026-01-23 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
166,919 +0.3%
67.18
US$11,213,668 		166,919 +0.3% 67.18 US$11,213,668
2026-01-23 2026-01-23 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
201,081 +0.4%
66.77
US$13,426,158 		201,081 +0.4% 66.77 US$13,426,158
2026-01-23 2026-01-22 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
330,000 +0.6%
67.45
US$22,258,665 		330,000 +0.6% 67.45 US$22,258,665
2026-01-21 2026-01-21 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
260,998 +0.5%
67.60
US$17,644,300 		260,998 +0.5% 67.60 US$17,644,300
2026-01-21 2026-01-21 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
59,002 +0.1%
66.95
US$3,950,337 		59,002 +0.1% 66.95 US$3,950,337
2026-01-21 2026-01-20 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
44,994 +0.1%
68.08
US$3,063,066 		44,994 +0.1% 68.08 US$3,063,066
2026-01-21 2026-01-20 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
265,006 +0.5%
67.75
US$17,954,316 		265,006 +0.5% 67.75 US$17,954,316
2026-01-16 2026-01-16 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
58,691 +0.1%
68.79
US$4,037,102 		58,691 +0.1% 68.79 US$4,037,102
2026-01-16 2026-01-16 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
241,309 +0.5%
68.03
US$16,416,493 		241,309 +0.5% 68.03 US$16,416,493
2026-01-16 2026-01-15 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
68,093 +0.1%
69.45
US$4,728,868 		68,093 +0.1% 69.45 US$4,728,868
2026-01-16 2026-01-15 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
166,907 +0.3%
68.68
US$11,462,338 		166,907 +0.3% 68.68 US$11,462,338
2026-01-14 2026-01-14 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
208,272 +0.4%
69.23
US$14,419,358 		208,272 +0.4% 69.23 US$14,419,358
2026-01-14 2026-01-14 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
21,728 +0.0%
68.80
US$1,494,928 		21,728 +0.0% 68.80 US$1,494,928
2026-01-14 2026-01-13 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
206,499 +0.4%
68.15
US$14,072,473 		206,499 +0.4% 68.15 US$14,072,473
2026-01-14 2026-01-13 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
118,501 +0.2%
67.82
US$8,037,224 		118,501 +0.2% 67.82 US$8,037,224
2026-01-14 2026-01-12 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
256,041 +0.5%
68.73
US$17,598,825 		256,041 +0.5% 68.73 US$17,598,825
2026-01-09 2026-01-09 PP Planned purchase
MITSUI SUMITOMO INSURANCE CO LTD
Large shareholder
8,150 +0.0%
70.12
US$571,447 		8,150 +0.0% 70.12 US$571,447
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