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W R Berkley Corp (WRB)

The most recent insider trading activity at W R Berkley Corp involved multiple planned purchases by MITSUI SUMITOMO INSURANCE CO LTD, totaling over $80 million across 15 transactions. The latest trades occurred on March 3, 2026. These transactions represent a significant planned acquisition of company shares.
Stock chart
Ticker: WRB Exchange: NYS


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Purchase Sale Planned purchase Planned sale Net purchase Net sale Activity signal Earnings
Top insiders
Trades
MITSUI SUMITOMO INSURANCE CO LTD
2 purchases — total 8,099,258 USD
Planned buy 3 Mar 2026
Value US$451,373.41 | Price 101.74 | Shares 4,852
Planned buy 3 Mar 2026
Value US$2,422,948.51 | Price 426.49 | Shares 78,470
Planned buy 2 Mar 2026
Value US$236,453.98 | Price 69.89 | Shares 56,975
Planned buy 2 Mar 2026
Value US$169,357.08 | Price 357.48 | Shares 9,624
Planned buy 27 Feb 2026
Value US$10,528,963.20 | Price 71.63 | Shares 147,000
Planned buy 26 Feb 2026
Value US$541,504.03 | Price 72.11 | Shares 7,509
Planned buy 26 Feb 2026
Value US$10,423,848.19 | Price 71.65 | Shares 145,491
Planned buy 25 Feb 2026
Value US$1,030,335.86 | Price 71.77 | Shares 14,356
Planned buy 25 Feb 2026
Value US$11,030,874.35 | Price 71.39 | Shares 154,512
Planned buy 24 Feb 2026
Value US$4,390,642.06 | Price 71.28 | Shares 61,594
Planned buy 24 Feb 2026
Value US$7,277,430.05 | Price 70.52 | Shares 103,192
Planned buy 23 Feb 2026
Value US$1,178,305.28 | Price 71.80 | Shares 16,410
Planned buy 23 Feb 2026
Value US$14,473,844.23 | Price 71.09 | Shares 203,590
Planned buy 20 Feb 2026
Value US$11,369,944.28 | Price 70.80 | Shares 160,582
Planned buy 19 Feb 2026
Value US$3,146,785.33 | Price 71.50 | Shares 44,014
Planned buy 19 Feb 2026
Value US$21,227,729.92 | Price 70.53 | Shares 300,986
Planned buy 18 Feb 2026
Value US$3,210,908.32 | Price 70.96 | Shares 45,250
Planned buy 18 Feb 2026
Value US$16,922,729.78 | Price 70.58 | Shares 239,750
Planned buy 17 Feb 2026
Value US$20,032,854.19 | Price 71.19 | Shares 281,386
Planned buy 13 Feb 2026
Value US$19,931.52 | Price 71.18 | Shares 280
Planned buy 13 Feb 2026
Value US$303,264.28 | Price 70.30 | Shares 4,314
Planned buy 13 Feb 2026
Value US$1,074,335.87 | Price 69.73 | Shares 15,406
Planned buy 12 Feb 2026
Value US$174,690.28 | Price 72.76 | Shares 2,401
Planned buy 12 Feb 2026
Value US$1,265,030.20 | Price 71.88 | Shares 17,599
Planned buy 11 Feb 2026
Value US$797,588.54 | Price 71.45 | Shares 11,163
Planned buy 11 Feb 2026
Value US$252,266.17 | Price 70.50 | Shares 3,578
Planned buy 11 Feb 2026
Value US$646,400.15 | Price 69.59 | Shares 9,289
Planned buy 10 Feb 2026
Value US$844,786.73 | Price 69.92 | Shares 12,082
Planned buy 10 Feb 2026
Value US$1,511,904.28 | Price 69.09 | Shares 21,884
Planned buy 9 Feb 2026
Value US$284,653.34 | Price 70.32 | Shares 4,048
Planned buy 9 Feb 2026
Value US$2,490,553.23 | Price 69.27 | Shares 35,952
Planned buy 6 Feb 2026
Value US$307,411.80 | Price 71.39 | Shares 4,306
Planned buy 6 Feb 2026
Value US$1,105,811.80 | Price 70.46 | Shares 15,694
Planned buy 5 Feb 2026
Value US$959,917.72 | Price 71.25 | Shares 13,472
Planned buy 5 Feb 2026
Value US$462,109.94 | Price 70.79 | Shares 6,528
Planned buy 4 Feb 2026
Value US$1,574,716.51 | Price 70.25 | Shares 22,415
Planned buy 4 Feb 2026
Value US$180,342.52 | Price 69.77 | Shares 2,585
Planned buy 4 Feb 2026
Value US$1,574,716.51 | Price 70.25 | Shares 22,415
Planned buy 4 Feb 2026
Value US$180,342.52 | Price 69.77 | Shares 2,585
Planned buy 3 Feb 2026
Value US$2,179,904.13 | Price 68.87 | Shares 31,653
Planned buy 3 Feb 2026
Value US$565,497.56 | Price 67.75 | Shares 8,347
Planned buy 3 Feb 2026
Value US$2,179,904.13 | Price 68.87 | Shares 31,653
Planned buy 3 Feb 2026
Value US$565,497.56 | Price 67.75 | Shares 8,347
Planned buy 2 Feb 2026
Value US$900,300.62 | Price 68.42 | Shares 13,159
Planned buy 2 Feb 2026
Value US$900,300.62 | Price 68.42 | Shares 13,159
Planned buy 2 Feb 2026
Value US$16,051,136.13 | Price 67.71 | Shares 237,062
Planned buy 30 Jan 2026
Value US$13,330,414.50 | Price 68.36 | Shares 195,000
Planned buy 29 Jan 2026
Value US$1,900,359.94 | Price 68.56 | Shares 27,718
Planned buy 29 Jan 2026
Value US$17,856,578.21 | Price 68.08 | Shares 262,282
Planned buy 28 Jan 2026
Value US$1,940,192.55 | Price 67.89 | Shares 28,577
Planned buy 28 Jan 2026
Value US$18,945,089.76 | Price 67.58 | Shares 280,354
Planned buy 27 Jan 2026
Value US$184,392.75 | Price 69.04 | Shares 2,671
Planned buy 27 Jan 2026
Value US$588,390.50 | Price 68.56 | Shares 8,582
Planned buy 27 Jan 2026
Value US$21,970,877.46 | Price 67.40 | Shares 325,960
Planned buy 27 Jan 2026
Value US$801,520.34 | Price 66.87 | Shares 11,987
Planned buy 27 Jan 2026
Value US$52,689.44 | Price 65.86 | Shares 800
Planned buy 26 Jan 2026
Value US$5,185,056.15 | Price 67.88 | Shares 76,389
Planned buy 26 Jan 2026
Value US$19,629,480.85 | Price 66.86 | Shares 293,611
Planned buy 23 Jan 2026
Value US$11,213,668.50 | Price 67.18 | Shares 166,919
Planned buy 23 Jan 2026
Value US$13,426,158.26 | Price 66.77 | Shares 201,081
Planned buy 22 Jan 2026
Value US$22,258,665.00 | Price 67.45 | Shares 330,000
Planned buy 21 Jan 2026
Value US$17,644,299.99 | Price 67.60 | Shares 260,998
Planned buy 21 Jan 2026
Value US$3,950,337.31 | Price 66.95 | Shares 59,002
Planned buy 20 Jan 2026
Value US$3,063,065.54 | Price 68.08 | Shares 44,994
Planned buy 20 Jan 2026
Value US$17,954,315.50 | Price 67.75 | Shares 265,006
Planned buy 16 Jan 2026
Value US$4,037,101.52 | Price 68.79 | Shares 58,691
Planned buy 16 Jan 2026
Value US$16,416,492.58 | Price 68.03 | Shares 241,309
Planned buy 15 Jan 2026
Value US$4,728,868.19 | Price 69.45 | Shares 68,093
Planned buy 15 Jan 2026
Value US$11,462,338.22 | Price 68.68 | Shares 166,907
Planned buy 14 Jan 2026
Value US$14,419,357.86 | Price 69.23 | Shares 208,272
Planned buy 14 Jan 2026
Value US$1,494,927.68 | Price 68.80 | Shares 21,728
Planned buy 13 Jan 2026
Value US$14,072,473.20 | Price 68.15 | Shares 206,499
Planned buy 13 Jan 2026
Value US$8,037,223.67 | Price 67.82 | Shares 118,501
Planned buy 12 Jan 2026
Value US$17,598,824.51 | Price 68.73 | Shares 256,041
Planned buy 9 Jan 2026
Value US$571,447.03 | Price 70.12 | Shares 8,150
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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 Large shareholder
8,150 +0.0%
70.12
US$571,447
8,150 +0.0% 70.12 US$571,447