Arthur J. Gallagher & Co. (AJG) Insider Trading
Over the last 3 months, AJG insiders made 0 open-market buys and 2 sales, a net sale of -$1.5M (SEC Form 4). Over the last 6 months, 898 institutions increased and 973 reduced their position (13F).
Insider Activity
Sentiment
0/100
Buys (3m)
0
Sells (3m)
2
Net (3m)
-$1.5M
Insider trades by month Buys Sells
Sep
Nov
Dec
Mar
Jun
Aug
Context3-month price +28.5%Institutions mixed (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Aug 20, 2026 | Mead Christopher Eofficer: VICE PRESIDENT | Option | 3,500 | $86.17 |
| Aug 20, 2026 | Mead Christopher Eofficer: VICE PRESIDENT | Sell | 3,500 | $257.02 |
| Aug 18, 2026 | Bloom Mark H.officer: Vice President | Option | 1,280 | — |
| Aug 18, 2026 | Bloom Mark H.officer: Vice President | Tax | 607 | $251.21 |
| Jul 6, 2026 | Pesch Michael Robertofficer: Vice President | Option | 356 | $229.57 |
| Jul 6, 2026 | GALLAGHER THOMAS JOSEPHofficer: President | Option | 352 | $229.57 |
| Jul 6, 2026 | Jain Vishalofficer: VICE PRESIDENT | Option | 2,163 | $229.57 |
| Jun 2, 2026 | JOHNSON DAVID Sdirector | Grant | 237 | $206.10 |
| Jun 2, 2026 | Miskel Christopher C.director | Grant | 194 | $206.10 |
| Jun 2, 2026 | CARY RICHARD Cofficer: Controller, CAO | Sell | 3,000 | $206.00 |
| May 13, 2026 | NICOLETTI RALPH Jdirector | Grant | 1,110 | — |
| May 13, 2026 | JOHNSON DAVID Sdirector | Grant | 1,110 | — |
| May 13, 2026 | Clarke Teresa Hillarydirector | Grant | 1,110 | — |
| May 13, 2026 | Harries Richard de Winton Wilkindirector | Grant | 1,110 | — |
| May 13, 2026 | Miskel Christopher C.director | Grant | 1,110 | — |
| May 13, 2026 | ROSENTHAL NORMAN Ldirector | Grant | 1,110 | — |
| May 13, 2026 | Caplan Deborah Hdirector | Grant | 1,110 | — |
| May 13, 2026 | Coldman David Johndirector | Grant | 1,110 | — |
| Apr 2, 2026 | HOWELL DOUGLAS Kofficer: VP & Chief Financial Officer | Tax | 76 | $215.95 |
| Apr 2, 2026 | Ziebell William Fofficer: VICE PRESIDENT | Option | 51 | $215.95 |
| Apr 2, 2026 | GALLAGHER THOMAS JOSEPHofficer: President | Tax | 76 | $215.95 |
| Apr 2, 2026 | GALLAGHER THOMAS JOSEPHofficer: President | Option | 76 | $215.95 |
| Apr 2, 2026 | Hudson Scott Rofficer: Vice President | Option | 64 | $215.95 |
| Apr 2, 2026 | Hudson Scott Rofficer: Vice President | Tax | 64 | $215.95 |
| Apr 2, 2026 | Jain Vishalofficer: VICE PRESIDENT | Tax | 51 | $215.95 |
| Apr 2, 2026 | Ziebell William Fofficer: VICE PRESIDENT | Tax | 51 | $215.95 |
| Apr 2, 2026 | Jain Vishalofficer: VICE PRESIDENT | Option | 51 | $215.95 |
| Apr 2, 2026 | HOWELL DOUGLAS Kofficer: VP & Chief Financial Officer | Option | 76 | $215.95 |
| Apr 1, 2026 | GALLAGHER J PATRICK JRdirector, officer: CEO | Tax | 2,369 | $215.95 |
| Apr 1, 2026 | GALLAGHER J PATRICK JRdirector, officer: CEO | Option | 5,346 | $215.95 |
Source: AJG SEC Form 4 filings, latest Aug 20, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their AJG positions over the last 6 months (SEC Form 13F).
Increased
898
New positions
320
Reduced
973
Sold out
123
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| BlackRock, Inc. | Increased | 19.8M | Aug 7, 2026 |
| JPMORGAN CHASE & CO | Reduced | 19.6M | May 13, 2026 |
| BLACKROCK, INC. | Increased | 19.3M | May 13, 2026 |
| FMR LLC | Increased | 18.6M | Aug 13, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 16.8M | Aug 13, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 16.7M | May 15, 2026 |
| FMR LLC | Reduced | 14.6M | May 15, 2026 |
| JPMORGAN CHASE & CO | Reduced | 14.4M | Aug 12, 2026 |
| CAPITAL WORLD INVESTORS | Increased | 13.8M | May 13, 2026 |
| Capital World Investors | Reduced | 12.5M | Aug 12, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 12.5M | Aug 13, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | New Position | 12.4M | May 8, 2026 |
| STATE STREET CORP | Increased | 11.3M | Aug 7, 2026 |
| STATE STREET CORP | Increased | 11.0M | May 15, 2026 |
| DODGE & COX | Increased | 9.4M | Aug 13, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.