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

(Last 100 transactions)
63.35
Buy 413.94M shares
Sell 82.48M shares
67% Buy Activity
Negligible or No Correlation
Buy Signal Medium Confidence
Mar 03, 2026

Analysis Breakdown:

  • Strongly supported by a very high Insider Power Score of 63.35.
  • Confidence increased due to high data reliability score of 100.

Historical Insider Trades

Date Type Person Role Amount
Mar 15, 2026
Sell
Common Stock
F-InKind
Gallagher Patrick Murphy
Chief Operating Officer
C-Suite Officer 1 962
Value: $408.0K
Mar 15, 2026
Buy
Common Stock (restricted)
M-Exempt
Gallagher Patrick Murphy
Chief Operating Officer
C-Suite Officer 4 620
Value: $998.6K
Mar 15, 2026
Sell
Common Stock
F-InKind
Gallagher J Patrick Jr
CEO
CEO / President 19 168
Value: $3.99M
Mar 15, 2026
Sell
Common Stock
F-InKind
Bloom Mark H.
Vice President
CEO / President 793
Value: $164.9K
Mar 15, 2026
Buy
Common Stock (restricted)
A-Award
Bay Walter D.
General Counsel
Officer 7 090
Value: $1.53M
Mar 15, 2026
Sell
Common Stock
F-InKind
Bay Walter D.
General Counsel
Officer 2 411
Value: $501.3K
Mar 15, 2026
Buy
Common Stock (restricted)
A-Award
Bloom Mark H.
Vice President
CEO / President 3 506
Value: $757.8K
Mar 15, 2026
Buy
Common Stock (restricted)
M-Exempt
Hudson Scott R
Vice President
CEO / President 7 170
Value: $1.55M
Mar 15, 2026
Buy
Common Stock
M-Exempt
Howell Douglas K
Vp & Chief Financial Officer
C-Suite Officer 9 082
Value: $1.96M
Mar 15, 2026
Buy
Common Stock (restricted)
A-Award
Howell Douglas K
Vp & Chief Financial Officer
C-Suite Officer 9 082
Value: $1.96M
Mar 15, 2026
Buy
Common Stock
M-Exempt
Jain Vishal
Vice President
CEO / President 6 214
Value: $1.34M
Mar 15, 2026
Sell
Common Stock
F-InKind
Jain Vishal
Vice President
CEO / President 2 645
Value: $550.0K
Mar 15, 2026
Buy
Common Stock (restricted)
A-Award
Jain Vishal
Vice President
CEO / President 6 214
Value: $1.34M
Mar 15, 2026
Buy
Common Stock (restricted)
A-Award
Pietrucha Susan E
Chief Human Resources Officer
Officer 6 612
Value: $1.43M
Mar 15, 2026
Buy
Common Stock (restricted)
M-Exempt
Pietrucha Susan E
Chief Human Resources Officer
Officer 6 612
Value: $1.43M
Mar 15, 2026
Buy
Common Stock (restricted)
A-Award
Hudson Scott R
Vice President
CEO / President 7 170
Value: $1.55M
Mar 15, 2026
Buy
Common Stock
M-Exempt
Mead Christopher E
Vice President
CEO / President 5 258
Value: $1.14M
Mar 15, 2026
Sell
Common Stock
F-InKind
Mead Christopher E
Vice President
CEO / President 2 019
Value: $419.8K
Mar 15, 2026
Sell
Common Stock
F-InKind
Gallagher Thomas Joseph
President
CEO / President 4 068
Value: $845.9K
Mar 13, 2026
Buy
Common Stock
M-Exempt
Howell Douglas K
Vp & Chief Financial Officer
C-Suite Officer 14 100
Value: $1.12M
Mar 13, 2026
Sell
Common Stock
F-InKind
Howell Douglas K
Vp & Chief Financial Officer
C-Suite Officer 8 638
Value: $1.80M
Mar 13, 2026
Buy
Non-qualified Stock Option
M-Exempt
Howell Douglas K
Vp & Chief Financial Officer
C-Suite Officer 14 100
Value: $1.12M
Mar 09, 2026
Sell
Common Stock
F-InKind
Jain Vishal
Vice President
CEO / President 4 326
Value: $948.2K
Mar 09, 2026
Buy
Common Stock
M-Exempt
Jain Vishal
Vice President
CEO / President 8 450
Value: $672.5K
Mar 09, 2026
Buy
Non-qualified Stock Option
M-Exempt
Jain Vishal
Vice President
CEO / President 8 450
Value: $672.5K

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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ABOUT ARTHUR J GALLAGHER & CO
Arthur J Gallagher &
Arthur J. Gallagher & Co., together with its subsidiaries, provides insurance brokerage, consulting, third-party claims settlement, and administration services in the United States, Australia, Bermuda, Canada, the Caribbean, New Zealand, India, and the United Kingdom. It operates through Brokerage and Risk Management segments. The Brokerage segment consists of retail and wholesale insurance brokerage operations; assists retail brokers and other n...
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