W. R. Berkley Corporation 5.70% SB DB 2058 (WRB-PE) has 20 known insider and institutional holders on record. The largest holder is MITSUI SUMITOMO INSURANCE CO LTD with 58,567,377 shares. Other notable holders include BERKLEY WILLIAM R and Berkley Capital, LLC.
Over the last 12 months, insiders have made 69 transactions in WRB-PE stock — 60 buys (valued at $515.46M) and 0 sells (valued at RSU Award). Insider buying has outpaced selling during this period, which may signal confidence in the company's prospects.
WRB-PE Insider Ownership
Top Holder
MITSUI SUMITOMO INSURANCE CO LTD
58,567,377 shares
Buys (12 mo)
60
$515.46M value
Sells (12 mo)
0
$0.00 value
12-Month Transaction Activity
Top Insider Holders
| # |
Name |
Role |
Shares Owned |
Last Filed |
Relative Size |
| 1 |
Mitsui Sumitomo Insurance Co Ltd |
10 Percent Owner |
58,567,377 |
2026-03-03 |
|
| 2 |
Berkley William R |
10 Percent Owner, Officer: Executive Chairman |
17,363,285 |
2025-08-19 |
|
| 3 |
Berkley Capital, Llc |
Other: See Remarks |
6,254,661 |
2018-02-12 |
|
| 4 |
Berkley William R Jr |
President and CEO |
4,552,770 |
2025-08-19 |
|
| 5 |
Shiel James G |
EVP - Investments |
797,197 |
2025-12-19 |
|
| 6 |
Ballard Eugene G |
EVP, Finance |
251,656 |
2017-08-09 |
|
| 7 |
Sgaglione Lucille T |
EVP |
241,036 |
2025-08-19 |
|
| 8 |
Lederman Ira S |
EVP & Secretary |
240,031 |
2019-12-30 |
|
| 9 |
Cole Robert P |
SVP - Regional Operations |
217,669 |
2010-03-04 |
|
| 10 |
Baio Richard Mark |
EVP & CFO |
214,175 |
2025-08-19 |
|
| 11 |
Welt Philip S |
EVP & Secretary |
200,539 |
2025-08-19 |
|
| 12 |
Nusbaum Jack H |
Director |
149,799 |
2020-06-12 |
|
| 13 |
Blaylock Ronald E |
Director |
118,900 |
2025-06-13 |
|
| 14 |
Augostini Christopher L |
Director |
106,769 |
2025-06-13 |
|
| 15 |
Mccleary James W |
SVP-reinsurance Operations |
105,919 |
2005-12-06 |
|
| 16 |
Hewitt Robert C |
SVP-excess and Surplus Lines |
85,000 |
2010-03-04 |
|
| 17 |
Stone Robert Daly |
SVP - Alt. Mkts. Operations |
76,698 |
2010-03-04 |
|
| 18 |
Hancock Paul J |
SVP - Chief Corporate Actuary |
75,875 |
2009-12-30 |
|
| 19 |
Patafio Clement P |
VP - Corporate Controller |
63,313 |
2012-12-18 |
|
| 20 |
Ferre Maria Luisa |
Director |
56,144 |
2025-06-13 |
|
Recent Transactions (last 12 months)
| Date |
Name |
Role |
Type |
Shares |
Price |
Value |
| 2026-03-03 |
Mitsui Sumitomo Insurance Co Ltd |
10 Percent Owner |
Informative Buy |
38,991 |
$71.60 |
$2.79M |
| 2026-03-02 |
Mitsui Sumitomo Insurance Co Ltd |
10 Percent Owner |
Informative Buy |
45,103 |
$72.29 |
$3.26M |
| 2026-02-27 |
Mitsui Sumitomo Insurance Co Ltd |
10 Percent Owner |
Informative Buy |
147,000 |
$71.63 |
$10.53M |
| 2026-02-26 |
Mitsui Sumitomo Insurance Co Ltd |
10 Percent Owner |
Informative Buy |
145,491 |
$71.65 |
$10.42M |
| 2026-02-25 |
Mitsui Sumitomo Insurance Co Ltd |
10 Percent Owner |
Informative Buy |
154,512 |
$71.39 |
$11.03M |
| 2026-02-24 |
Mitsui Sumitomo Insurance Co Ltd |
10 Percent Owner |
Informative Buy |
103,192 |
$70.52 |
$7.28M |
| 2026-02-23 |
Mitsui Sumitomo Insurance Co Ltd |
10 Percent Owner |
Informative Buy |
203,590 |
$71.09 |
$14.47M |
| 2026-02-20 |
Mitsui Sumitomo Insurance Co Ltd |
10 Percent Owner |
Informative Buy |
160,582 |
$70.80 |
$11.37M |
| 2026-02-19 |
Mitsui Sumitomo Insurance Co Ltd |
10 Percent Owner |
Informative Buy |
300,986 |
$70.53 |
$21.23M |
| 2026-02-18 |
Mitsui Sumitomo Insurance Co Ltd |
10 Percent Owner |
Informative Buy |
239,750 |
$70.58 |
$16.92M |
| 2026-02-17 |
Mitsui Sumitomo Insurance Co Ltd |
10 Percent Owner |
Informative Buy |
281,386 |
$71.19 |
$20.03M |
| 2026-02-13 |
Mitsui Sumitomo Insurance Co Ltd |
10 Percent Owner |
Informative Buy |
15,406 |
$69.73 |
$1.07M |
| 2026-02-12 |
Mitsui Sumitomo Insurance Co Ltd |
10 Percent Owner |
Informative Buy |
17,599 |
$71.88 |
$1.27M |
| 2026-02-11 |
Mitsui Sumitomo Insurance Co Ltd |
10 Percent Owner |
Informative Buy |
9,289 |
$69.59 |
$646.4K |
| 2026-02-10 |
Mitsui Sumitomo Insurance Co Ltd |
10 Percent Owner |
Informative Buy |
21,884 |
$69.09 |
$1.51M |
| 2026-02-09 |
Mitsui Sumitomo Insurance Co Ltd |
10 Percent Owner |
Informative Buy |
35,952 |
$69.27 |
$2.49M |
| 2026-02-06 |
Mitsui Sumitomo Insurance Co Ltd |
10 Percent Owner |
Informative Buy |
15,694 |
$70.46 |
$1.11M |
| 2026-02-05 |
Mitsui Sumitomo Insurance Co Ltd |
10 Percent Owner |
Informative Buy |
6,528 |
$70.79 |
$462.11K |
| 2026-02-04 |
Mitsui Sumitomo Insurance Co Ltd |
10 Percent Owner |
Informative Buy |
2,585 |
$69.77 |
$180.34K |
| 2026-02-03 |
Mitsui Sumitomo Insurance Co Ltd |
10 Percent Owner |
Informative Buy |
8,347 |
$67.75 |
$565.5K |
| 2026-02-02 |
Mitsui Sumitomo Insurance Co Ltd |
10 Percent Owner |
Informative Buy |
237,062 |
$67.71 |
$16.05M |
| 2026-01-30 |
Mitsui Sumitomo Insurance Co Ltd |
10 Percent Owner |
Informative Buy |
195,000 |
$68.36 |
$13.33M |
| 2026-01-29 |
Mitsui Sumitomo Insurance Co Ltd |
10 Percent Owner |
Informative Buy |
262,282 |
$68.08 |
$17.86M |
| 2026-01-28 |
Mitsui Sumitomo Insurance Co Ltd |
10 Percent Owner |
Informative Buy |
280,354 |
$67.58 |
$18.95M |
| 2026-01-27 |
Mitsui Sumitomo Insurance Co Ltd |
10 Percent Owner |
Informative Buy |
800 |
$65.86 |
$52.69K |
