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 27, 2026 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	800 Value: $52.7K
Jan 26, 2026 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	293 611 Value: $19.6M
Jan 26, 2026 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	76 389 Value: $5.19M
Jan 23, 2026 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	166 919 Value: $11.2M
Jan 23, 2026 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	201 081 Value: $13.4M
Jan 22, 2026 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	330 000 Value: $22.3M
Jan 21, 2026 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	260 998 Value: $17.6M
Jan 21, 2026 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	59 002 Value: $3.95M
Jan 20, 2026 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	44 994 Value: $3.06M
Jan 20, 2026 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	265 006 Value: $18.0M
Jan 16, 2026 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	241 309 Value: $16.4M
Jan 16, 2026 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	58 691 Value: $4.04M
Jan 15, 2026 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	166 907 Value: $11.5M
Jan 15, 2026 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	68 093 Value: $4.73M
Jan 14, 2026 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	21 728 Value: $1.49M
Jan 14, 2026 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	208 272 Value: $14.4M
Jan 13, 2026 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	118 501 Value: $8.04M
Jan 13, 2026 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	206 499 Value: $14.1M
Jan 12, 2026 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	256 041 Value: $17.6M
Jan 09, 2026 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	8 150 Value: $571.4K
Jan 09, 2026 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	105 674 Value: $7.35M
Jan 09, 2026 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	161 176 Value: $11.0M
Jan 08, 2026 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	151 511 Value: $10.7M
Jan 08, 2026 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	39 302 Value: $2.74M
Jan 08, 2026 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	4 187 Value: $288.0K

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