NYSE:WRB-PF

W.r. Berkley 5.10% Stock Insider Trading

*Your capital is at risk

$19.24

-0.110 (-0.568%)

At Close: Jun 03, 2026

W.r. Berkley 5.10% Stock Insider Power

Based on the 100 latest insides trades, we have calculated the insider power to be positive at 99.97. In total, the insiders bought 10.4M and sold 10.22K WRB-PF shares in the last 100 trades. The insider score can be negative despite buy/sell ratio being positive. The score focuses on the quality of the trades.

Insider Power (Last 100 transactions)	99.97
● Buy	10.4M shares
● Sell	10.22K shares
97% Buy Activity Weak Positive Correlation
Buy Signal High Confidence Dec 18, 2025 Analysis Breakdown: Strongly supported by a very high Insider Power Score of 99.97. Confidence increased due to high data reliability score of 90. Supported by overwhelming buy-side pressure (97% buys).

Historical Insider Trades

Date	Type	Person	Role	Amount
Jan 07, 2026 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	254 622 Value: $17.4M
Jan 07, 2026 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	10 378 Value: $718.2K
Jan 06, 2026 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	92 357 Value: $6.48M
Jan 06, 2026 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	122 931 Value: $8.60M
Jan 05, 2026 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	153 686 Value: $10.9M
Jan 05, 2026 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	35 894 Value: $2.52M
Jan 05, 2026 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	11 350 Value: $785.4K
Jan 02, 2026 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	237 734 Value: $16.5M
Dec 31, 2025 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	230 000 Value: $16.2M
Dec 30, 2025 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	205 000 Value: $14.5M
Dec 29, 2025 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	205 000 Value: $14.5M
Dec 26, 2025 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	220 000 Value: $15.5M
Dec 24, 2025 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	220 000 Value: $15.5M
Dec 23, 2025 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	232 546 Value: $16.4M
Dec 23, 2025 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	2 027 Value: $144.2K
Dec 22, 2025 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	162 060 Value: $11.4M
Dec 22, 2025 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	39 940 Value: $2.79M
Dec 19, 2025 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	204 000 Value: $14.2M
Dec 18, 2025 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	204 350 Value: $14.2M
Dec 18, 2025 Sell	Common Stock G-Gift	Shiel James G EVP - Investments	Officer	1 250 Value: $0
Dec 04, 2025 Buy	Common Stock	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	0 Value: $0
Aug 15, 2025 Buy	Common Stock A-Award	Berkley William R Jr President And CEO	CEO / President	111 869 Value: $2.24M
Aug 15, 2025 Sell	Common Stock F-InKind	Berkley William R Jr President And CEO	CEO / President	4 696 Value: $334.5K
Aug 15, 2025 Buy	Common Stock A-Award	Berkley William R Executive Chairman	CEO / President	111 869 Value: $2.24M
Aug 15, 2025 Sell	Common Stock F-InKind	Berkley William R Executive Chairman	CEO / President	4 277 Value: $304.7K

About Insider Power

Insider Power is a proprietary algorithm developed by StockInvest.us to evaluate the significance of insider transactions. The calculation considers the size, type, and timing of transactions, as well as the insider’s role within the company.

It is important to note that, in general, there is little to no correlation between insider transactions and short-term stock price movements. In one of our studies, only 0.22%^* of stocks with insider activity showed a measurable correlation — and even then, it was unclear whether the effect was caused by insider actions or simply by the stock’s broader trend.

While our algorithms are designed to highlight potentially meaningful signals, these cannot be regarded as statistically significant on their own. Insider trading activity should therefore be seen as informative rather than as direct trading guidance. The Insider Power metric was created to present this information in a clearer and more accessible way, helping investors better understand the possible context of insider activity.

* October 6th, 2025 - Tested on 5562 stocks