NYSE:WRB-PF

W.r. Berkley 5.10% Stock Insider Trading

*Your capital is at risk

$18.20

-0.0500 (-0.274%)

At Close: Aug 10, 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 99.96. In total, the insiders bought 8.18M and sold 6.03K 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)	99.96
● Buy	8.18M shares
● Sell	6.03K shares
96% Buy Activity Negligible or No Correlation
Sell Signal Low Confidence Aug 03, 2026 Analysis Breakdown: Signal is highly questionable due to a strongly contradictory positive Insider Power Score of 99.96. Confidence increased due to high data reliability score of 100.

Historical Insider Trades

Date	Type	Person	Role	Amount
Feb 06, 2026 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	15 694 Value: $1.11M
Feb 06, 2026 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	4 306 Value: $307.4K
Feb 05, 2026 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	13 472 Value: $959.9K
Feb 05, 2026 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	6 528 Value: $462.1K
Feb 04, 2026 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	2 585 Value: $180.3K
Feb 04, 2026 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	22 415 Value: $1.57M
Feb 03, 2026 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	8 347 Value: $565.5K
Feb 03, 2026 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	31 653 Value: $2.18M
Feb 02, 2026 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	237 062 Value: $16.1M
Feb 02, 2026 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	13 159 Value: $900.3K
Jan 30, 2026 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	195 000 Value: $13.3M
Jan 29, 2026 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	27 718 Value: $1.90M
Jan 29, 2026 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	262 282 Value: $17.9M
Jan 28, 2026 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	28 577 Value: $1.94M
Jan 28, 2026 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	280 354 Value: $18.9M
Jan 27, 2026 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	2 671 Value: $184.4K
Jan 27, 2026 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	8 582 Value: $588.4K
Jan 27, 2026 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	325 960 Value: $22.0M
Jan 27, 2026 Buy	Common Stock P-Purchase	Mitsui Sumitomo Insurance Co Ltd 10 Percent Owner	10% Owner	11 987 Value: $801.5K
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

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