William R Berkley JR
CIK 1236253 · View on SEC EDGAR ↗
Insider
First SEC filing: June 4, 2026 · Latest: June 4, 2026
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 81 non-open-market transactions below
last 12 months, based on the transactions shown below
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
No open-market trades on record; showing all filings.
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Aug. 3, 2026 | WRB | A | 98,593 | — | — | 4,654,453 Direct | +2.16% | Acquired | (price as of 2026-08-21) |
| Aug. 3, 2026 | WRB | F | 4,139 | $72.29 | $299,208 | 4,650,314 Direct | -0.09% | Disposed | -3.8% (price as of 2026-08-21) |
| June 3, 2026 | WRB | A | 3,090 | — | — | 4,555,860 Direct | +0.07% | Acquired | (price as of 2026-08-21) |
| Aug. 15, 2025 | WRB | F | 4,696 | $71.24 | $334,543 | 4,552,770 Direct | -0.10% | Disposed | -2.4% (price as of 2026-08-21) |
| Aug. 15, 2025 | WRB | A | 111,869 | — | — | 4,557,466 Direct | +2.52% | Acquired | (price as of 2026-08-21) |
| June 11, 2025 | WRB | A | 2,776 | — | — | 4,445,597 Direct | +0.06% | Acquired | (price as of 2026-08-21) |
| Aug. 15, 2024 | WRB | F | 5,055 | $57.75 | $291,926 | 4,442,821 Direct | -0.11% | Disposed | 20.4% (price as of 2026-08-21) |
| Aug. 15, 2024 | WRB | A | 120,430 | — | — | 4,447,876 Direct | +2.78% | Acquired | (price as of 2026-08-21) |
| June 12, 2024 | WRB | A | 2,534 | — | — | 2,884,966 Direct | +0.09% | Acquired | (price as of 2026-08-21) |
| Aug. 15, 2023 | WRB | F | 3,758 | $63.14 | $237,280 | 2,882,432 Direct | -0.13% | Disposed | 65.2% (price as of 2026-08-21) |
| Aug. 15, 2023 | WRB | A | 89,507 | — | — | 2,886,190 Direct | +3.20% | Acquired | (price as of 2026-08-21) |
| June 14, 2023 | WRB | A | 3,479 | — | — | 2,796,683 Direct | +0.12% | Acquired | (price as of 2026-08-21) |
| Aug. 15, 2022 | WRB | A | 99,374 | — | — | 2,797,376 Direct | +3.68% | Acquired | (price as of 2026-08-21) |
| Aug. 15, 2022 | WRB | F | 4,172 | $65.78 | $274,434 | 2,793,204 Direct | -0.15% | Disposed | 58.6% (price as of 2026-08-21) |
| June 15, 2022 | WRB | A | 2,995 | — | — | 2,698,002 Direct | +0.11% | Acquired | (price as of 2026-08-21) |
| Aug. 16, 2021 | WRB | F | 2,076 | $74.34 | $154,330 | 1,796,670 Direct | -0.12% | Disposed | 110.4% (price as of 2026-08-21) |
| Aug. 16, 2021 | WRB | A | 49,438 | — | — | 1,798,746 Direct | +2.83% | Acquired | (price as of 2026-08-21) |
| Aug. 5, 2021 | WRB | F | 1,281 | $72.22 | $92,514 | 1,749,308 Direct | -0.07% | Disposed | 116.6% (price as of 2026-08-21) |
| Aug. 5, 2021 | WRB | A | 30,512 | — | — | 1,750,589 Direct | +1.77% | Acquired | (price as of 2026-08-21) |
| June 15, 2021 | WRB | A | 2,652 | — | — | 1,720,077 Direct | +0.15% | Acquired | (price as of 2026-08-21) |
| Aug. 17, 2020 | WRB | F | 1,093 | $61.26 | $66,957 | 1,717,425 Direct | -0.06% | Disposed | 155.4% (price as of 2026-08-21) |
| Aug. 17, 2020 | WRB | A | 26,028 | — | — | 1,718,518 Direct | +1.54% | Acquired | (price as of 2026-08-21) |
| Aug. 5, 2020 | WRB | F | 2,477 | $62.07 | $153,747 | 1,692,490 Direct | -0.15% | Disposed | 152.0% (price as of 2026-08-21) |
| Aug. 5, 2020 | WRB | A | 59,008 | — | — | 1,694,967 Direct | +3.61% | Acquired | (price as of 2026-08-21) |
| Aug. 5, 2019 | WRB | F | 6,977 | $68.56 | $478,343 | 1,632,476 Direct | -0.43% | Disposed | 128.2% (price as of 2026-08-21) |
| Aug. 5, 2019 | WRB | A | 166,257 | — | — | 1,639,453 Direct | +11.29% | Acquired | (price as of 2026-08-21) |
| June 12, 2019 | WRB | A | 3,483 | — | — | 1,635,959 Direct | +0.21% | Acquired | (price as of 2026-08-21) |
| June 6, 2019 | WRB | A | 3,151 | — | — | 1,473,196 Direct | +0.21% | Acquired | (price as of 2026-08-21) |
| June 6, 2019 | WRB | A | 3,151 | — | — | 1,473,196 Direct | +0.21% | Acquired | (price as of 2026-08-21) |
| Aug. 6, 2018 | WRB | F | 796 | $76.06 | $60,544 | 980,030 Direct | -0.08% | Disposed | 208.5% (price as of 2026-08-21) |
| Aug. 6, 2018 | WRB | A | 18,997 | — | — | 980,826 Direct | +1.98% | Acquired | (price as of 2026-08-21) |
| May 31, 2018 | WRB | A | 2,619 | — | — | 961,829 Direct | +0.27% | Acquired | (price as of 2026-08-21) |
| Aug. 7, 2017 | WRB | F | 5,908 | $68.45 | $404,403 | 959,210 Direct | -0.61% | Disposed | 242.8% (price as of 2026-08-21) |
| May 16, 2017 | WRB | A | 3,000 | — | — | 965,118 Direct | +0.31% | Acquired | (price as of 2026-08-21) |
| May 25, 2016 | WRB | A | 3,000 | — | — | 962,118 Direct | +0.31% | Acquired | (price as of 2026-08-21) |
| June 2, 2015 | WRB | A | 3,000 | — | — | 959,118 Direct | +0.31% | Acquired | (price as of 2026-08-21) |
| March 2, 2015 | WRB | F | 5,146 | $49.96 | $257,094 | 956,118 Direct | -0.54% | Disposed | 369.7% (price as of 2026-08-21) |
| May 20, 2014 | WRB | A | 3,000 | — | — | 961,264 Direct | +0.31% | Acquired | (price as of 2026-08-21) |
| May 21, 2013 | WRB | A | 3,000 | — | — | 958,264 Direct | +0.31% | Acquired | (price as of 2026-08-21) |
| Dec. 27, 2012 | WRB | G | 10,000 | — | — | 260,000 Indirect | +4.00% | Acquired | (price as of 2026-08-21) |
| Dec. 17, 2012 | WRB | F | 3,731 | $38.93 | $145,248 | 955,264 Direct | -0.39% | Disposed | 502.8% (price as of 2026-08-21) |
| Sept. 26, 2012 | WRB | A | 135,000 | — | — | 958,995 Direct | +16.38% | Acquired | (price as of 2026-08-21) |
| May 22, 2012 | WRB | A | 3,000 | — | — | 823,995 Direct | +0.37% | Acquired | (price as of 2026-08-21) |
| Feb. 2, 2012 | WRB | M | 102,502 | — | — | 0 Direct | -100.00% | Disposed | (price as of 2026-08-21) |
| Feb. 2, 2012 | WRB | F | 59,840 | $36.11 | $2,160,822 | 820,995 Direct | -6.79% | Disposed | 549.9% (price as of 2026-08-21) |
| Feb. 2, 2012 | WRB | M | 102,502 | $11.39 | $1,167,498 | 880,835 Direct | +13.17% | Acquired | 1960.3% (price as of 2026-08-21) |
| Dec. 30, 2011 | WRB | M | 50,000 | — | — | 102,502 Direct | -32.79% | Disposed | (price as of 2026-08-21) |
| Dec. 30, 2011 | WRB | F | 30,969 | $34.46 | $1,067,192 | 778,333 Direct | -3.83% | Disposed | 581.0% (price as of 2026-08-21) |
| Dec. 30, 2011 | WRB | M | 50,000 | $11.39 | $569,500 | 809,302 Direct | +6.58% | Acquired | 1960.3% (price as of 2026-08-21) |
| Dec. 22, 2011 | WRB | M | 50,000 | — | — | 152,502 Direct | -24.69% | Disposed | (price as of 2026-08-21) |
| Dec. 22, 2011 | WRB | G | 250,000 | — | — | 250,000 Indirect | — | Acquired | (price as of 2026-08-21) |
| Dec. 22, 2011 | WRB | F | 31,085 | $34.04 | $1,058,133 | 759,302 Direct | -3.93% | Disposed | 589.4% (price as of 2026-08-21) |
| Dec. 22, 2011 | WRB | M | 50,000 | $11.39 | $569,500 | 790,387 Direct | +6.75% | Acquired | 1960.3% (price as of 2026-08-21) |
| May 17, 2011 | WRB | A | 3,000 | — | — | 740,387 Direct | +0.41% | Acquired | (price as of 2026-08-21) |
| March 11, 2011 | WRB | M | 125,000 | — | — | 0 Direct | -100.00% | Disposed | (price as of 2026-08-21) |
| March 11, 2011 | WRB | F | 75,940 | $29.93 | $2,272,884 | 737,387 Direct | -9.34% | Disposed | 684.0% (price as of 2026-08-21) |
| March 11, 2011 | WRB | M | 125,000 | $9.34 | $1,167,500 | 813,327 Direct | +18.16% | Acquired | 2412.5% (price as of 2026-08-21) |
| March 10, 2011 | WRB | M | 131,252 | — | — | 125,000 Direct | -51.22% | Disposed | (price as of 2026-08-21) |
| March 10, 2011 | WRB | F | 79,770 | $29.89 | $2,384,325 | 688,327 Direct | -10.39% | Disposed | 685.1% (price as of 2026-08-21) |
| March 10, 2011 | WRB | M | 131,252 | $9.34 | $1,225,894 | 768,097 Direct | +20.61% | Acquired | 2412.5% (price as of 2026-08-21) |
| Dec. 31, 2010 | WRB | M | 250,000 | — | — | 256,252 Direct | -49.38% | Disposed | (price as of 2026-08-21) |
| Dec. 31, 2010 | WRB | F | 155,973 | $27.41 | $4,275,220 | 631,658 Direct | -19.80% | Disposed | 756.1% (price as of 2026-08-21) |
| Dec. 31, 2010 | WRB | M | 250,000 | $9.34 | $2,335,000 | 787,631 Direct | +46.50% | Acquired | 2412.5% (price as of 2026-08-21) |
| Nov. 16, 2010 | WRB | W | 5,187 | — | — | 636,845 Direct | +0.82% | Acquired | (price as of 2026-08-21) |
| May 18, 2010 | WRB | A | 3,000 | — | — | 537,631 Direct | +0.56% | Acquired | (price as of 2026-08-21) |
| March 2, 2010 | WRB | A | 150,000 | — | — | 534,631 Direct | +39.00% | Acquired | (price as of 2026-08-21) |
| May 19, 2009 | WRB | A | 2,000 | — | — | 359,319 Direct | +0.56% | Acquired | (price as of 2026-08-21) |
| Sept. 16, 2008 | WRB | M | 40,000 | — | — | 0 Direct | -100.00% | Disposed | (price as of 2026-08-21) |
| Sept. 16, 2008 | WRB | F | 19,666 | $23.22 | $456,645 | 357,319 Direct | -5.22% | Disposed | 910.6% (price as of 2026-08-21) |
| Sept. 16, 2008 | WRB | M | 40,000 | $3.06 | $122,400 | 376,985 Direct | +11.87% | Acquired | 7568.8% (price as of 2026-08-21) |
| Sept. 10, 2008 | WRB | M | 41,000 | $3.06 | $125,460 | 357,098 Direct | +12.97% | Acquired | 7568.8% (price as of 2026-08-21) |
| Sept. 10, 2008 | WRB | F | 20,113 | $23.55 | $473,661 | 336,985 Direct | -5.63% | Disposed | 896.4% (price as of 2026-08-21) |
| Sept. 10, 2008 | WRB | M | 41,000 | — | — | 40,000 Direct | -50.62% | Disposed | (price as of 2026-08-21) |
| June 17, 2008 | WRB | A | 150,000 | — | — | 316,098 Direct | +90.31% | Acquired | (price as of 2026-08-21) |
| May 28, 2008 | WRB | A | 2,000 | — | — | 166,098 Direct | +1.22% | Acquired | (price as of 2026-08-21) |
| May 8, 2007 | WRB | A | 1,500 | — | — | 164,098 Direct | +0.92% | Acquired | (price as of 2026-08-21) |
| May 16, 2006 | WRB | A | 1,500 | — | — | 162,598 Direct | +0.93% | Acquired | (price as of 2026-08-21) |
| Dec. 5, 2005 | WRB | A | 60,000 | — | — | 107,399 Direct | +126.58% | Acquired | (price as of 2026-08-21) |
| May 10, 2005 | WRB | A | 1,000 | — | — | 47,399 Direct | +2.16% | Acquired | (price as of 2026-08-21) |
| May 11, 2004 | WRB | A | 10,000 | — | — | 25,714 Direct | +63.64% | Acquired | (price as of 2026-08-21) |
| May 11, 2004 | WRB | A | 189 | — | — | 15,714 Direct | +1.22% | Acquired | (price as of 2026-08-21) |
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Derivative holdings (Form 4 Table II)
Options, RSUs and convertible securities reported on Form 4 Table II.
| Date | Ticker | Security | Underlying | Exercise price | Expiration | Shares | A/D |
|---|---|---|---|---|---|---|---|
| Feb. 2, 2012 | WRB | Employee Stock Option (Right to Buy) | Common Stock | — | April 3, 2012 | 102,502 | Disposed |
| Dec. 30, 2011 | WRB | Employee Stock Option (Right to Buy) | Common Stock | — | April 3, 2012 | 50,000 | Disposed |
| Dec. 22, 2011 | WRB | Employee Stock Option (Right to Buy) | Common Stock | — | April 3, 2012 | 50,000 | Disposed |
| March 11, 2011 | WRB | Employee Stock Option (Right to Buy) | Common Stock | — | March 13, 2011 | 125,000 | Disposed |
| March 10, 2011 | WRB | Employee Stock Option (Right to Buy) | Common Stock | — | March 13, 2011 | 131,252 | Disposed |
| Dec. 31, 2010 | WRB | Employee Stock Option (Right to Buy) | Common Stock | — | March 13, 2011 | 250,000 | Disposed |
| Sept. 16, 2008 | WRB | Employee Stock Option (Right to Buy) | Common Stock | — | March 16, 2010 | 40,000 | Disposed |
| Sept. 10, 2008 | WRB | Employee Stock Option (Right to Buy) | Common Stock | — | March 16, 2010 | 41,000 | Disposed |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Compensation (DEF 14A)
Matched by name from proxy statements (DEF 14A) — verify against the filing.
| Fiscal year | Salary | Bonus | Stock awards | Option awards | Non-equity incentive | Pension change | Other | Total |
|---|---|---|---|---|---|---|---|---|
| 2025 | $1,097,800 | — | $3,850,038 | — | $11,176,030 | — | $699,998 | $16,823,866 |
| 2024 | $1,086,800 | — | $3,850,044 | — | $11,696,675 | — | $737,714 | $17,371,233 |
| 2023 | $1,086,800 | — | $3,850,025 | — | $11,198,400 | — | $678,341 | $16,813,566 |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.