Arthur J Gallagher & Stock Insider Power
Based on the 100 latest insides trades, we have calculated the insider power to be positive at 63.35. In total, the insiders bought 413.94M and sold 82.48M AJG 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
|
63.35 |
| ● Buy | 413.94M shares |
| ● Sell | 82.48M shares |
|
67% Buy Activity
Negligible or No Correlation
|
|
Historical Insider Trades
| Date | Type | Person | Role | Amount |
|---|---|---|---|---|
|
Mar 15, 2026 Buy |
Ziebell William F Vice President |
6 930 Value: $1.50M |
||
|
Mar 15, 2026 Buy |
Ziebell William F Vice President |
6 930 Value: $1.50M |
||
|
Mar 15, 2026 Sell |
Ziebell William F Vice President |
2 321 Value: $482.6K |
||
|
Mar 15, 2026 Buy |
Ziebell William F Vice President |
6 930 Value: $1.50M |
||
|
Mar 15, 2026 Buy |
Gallagher Thomas Joseph President |
9 560 Value: $2.07M |
||
|
Mar 15, 2026 Buy |
Gallagher Thomas Joseph President |
9 560 Value: $2.07M |
||
|
Mar 15, 2026 Buy |
Gallagher Thomas Joseph President |
9 560 Value: $2.07M |
||
|
Mar 15, 2026 Buy |
Howell Douglas K Vp & Chief Financial Officer |
9 082 Value: $1.96M |
||
|
Mar 15, 2026 Sell |
Howell Douglas K Vp & Chief Financial Officer |
3 865 Value: $803.6K |
||
|
Mar 15, 2026 Sell |
Hudson Scott R Vice President |
2 828 Value: $588.0K |
||
|
Mar 15, 2026 Buy |
Hudson Scott R Vice President |
7 170 Value: $1.55M |
||
|
Mar 15, 2026 Buy |
Mead Christopher E Vice President |
5 258 Value: $1.14M |
||
|
Mar 15, 2026 Buy |
Mead Christopher E Vice President |
5 258 Value: $1.14M |
||
|
Mar 15, 2026 Sell |
Pietrucha Susan E Chief Human Resources Officer |
2 186 Value: $454.5K |
||
|
Mar 15, 2026 Buy |
Pietrucha Susan E Chief Human Resources Officer |
6 612 Value: $1.43M |
||
|
Mar 15, 2026 Buy |
Bloom Mark H. Vice President |
3 506 Value: $757.8K |
||
|
Mar 15, 2026 Buy |
Bay Walter D. General Counsel |
7 090 Value: $1.53M |
||
|
Mar 15, 2026 Buy |
Bay Walter D. General Counsel |
7 090 Value: $1.53M |
||
|
Mar 15, 2026 Buy |
Gallagher J Patrick Jr CEO |
45 048 Value: $9.74M |
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|
Mar 15, 2026 Sell |
Cary Richard C Controller, Cao |
181 Value: $37.6K |
||
|
Mar 15, 2026 Buy |
Bloom Mark H. Vice President |
3 506 Value: $757.8K |
||
|
Mar 15, 2026 Buy |
Gallagher J Patrick Jr CEO |
45 048 Value: $9.74M |
||
|
Mar 15, 2026 Buy |
Gallagher J Patrick Jr CEO |
45 048 Value: $9.74M |
||
|
Mar 15, 2026 Buy |
Gallagher Patrick Murphy Chief Operating Officer |
4 620 Value: $998.6K |
||
|
Mar 15, 2026 Buy |
Gallagher Patrick Murphy Chief Operating Officer |
4 620 Value: $998.6K |
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
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