As of the latest Form 4 filed Jul 6, 2026.
What Arthur J Gallagher & Co insiders — officers, directors and 10% owners — have bought and sold in their own stock, straight from their SEC Form 4 filings. Values are shares × the reported transaction price where both are disclosed.
Buys plotted up, sells down; bar height is the disclosed dollar value (shares × reported price). Our Form 4 history is only complete from mid-2026, so early months are sparse — the series fills in as more filings land. Open-market purchases and sales only.
Newest filing first — the 111 most recent filings for AJG.
| Filed | Trade date | Insider | Transaction | Shares | Price | Value | 10b5-1 | Filing |
|---|---|---|---|---|---|---|---|---|
| 2026-07-06 | 2026-07-01 | Jain Vishal VICE PRESIDENT | MExercise | +2.16K | $229.57 | $496K | No | Form 4 ↗ |
| 2026-07-06 | 2026-07-01 | GALLAGHER THOMAS JOSEPH President | MExercise | +351.94 | $229.57 | $80.8K | No | Form 4 ↗ |
| 2026-07-06 | 2026-07-01 | Pesch Michael Robert Vice President | MExercise | +355.80 | $229.57 | $81.7K | No | Form 4 ↗ |
| 2026-06-02 | 2026-06-02 | CARY RICHARD C Controller, CAO | SSale | −3.00K | $206.00 | $618K | No | Form 4 ↗ |
| 2026-06-02 | 2026-06-01 | JOHNSON DAVID S Director | AAward | +236.54 | $206.10 | $48.8K | No | Form 4 ↗ |
| 2026-06-02 | 2026-06-01 | Miskel Christopher C. Director | AAward | +194.08 | $206.10 | $40.0K | No | Form 4 ↗ |
| 2026-05-28 | 2026-05-26 | Gallagher Patrick Murphy Chief Operating Officer | GGift | +14.7K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-28 | 2026-05-26 | GALLAGHER J PATRICK JR CEO | GGift | −14.7K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-13 | 2026-05-12 | Caplan Deborah H Director | AAward | +1.11K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-13 | 2026-05-12 | Clarke Teresa Hillary Director | AAward | +1.11K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-13 | 2026-05-12 | Coldman David John Director | AAward | +1.11K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-13 | 2026-05-12 | Harries Richard de Winton Wilkin Director | AAward | +1.11K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-13 | 2026-05-12 | JOHNSON DAVID S Director | AAward | +1.11K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-13 | 2026-05-12 | Miskel Christopher C. Director | AAward | +1.11K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-13 | 2026-05-12 | NICOLETTI RALPH J Director | AAward | +1.11K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-13 | 2026-05-12 | ROSENTHAL NORMAN L Director | AAward | +1.11K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-04-02 | 2026-03-31 | GALLAGHER THOMAS JOSEPH President | FTax | −76.38 | $215.95 | $16.5K | No | Form 4 ↗ |
| 2026-04-02 | 2026-03-31 | GALLAGHER THOMAS JOSEPH, President | MExercise | +76.38 | $215.95 | $16.5K | No | Form 4 ↗ |
| 2026-04-02 | 2026-03-31 | HOWELL DOUGLAS K VP & Chief Financial Officer | FTax | −76.38 | $215.95 | $16.5K | No | Form 4 ↗ |
| 2026-04-02 | 2026-03-31 | HOWELL DOUGLAS K, VP & Chief Financial Officer | MExercise | +76.38 | $215.95 | $16.5K | No | Form 4 ↗ |
| 2026-04-02 | 2026-03-31 | Hudson Scott R Vice President | FTax | −63.65 | $215.95 | $13.7K | No | Form 4 ↗ |
| 2026-04-02 | 2026-03-31 | Hudson Scott R, Vice President | MExercise | +63.65 | $215.95 | $13.7K | No | Form 4 ↗ |
| 2026-04-02 | 2026-03-31 | Jain Vishal VICE PRESIDENT | FTax | −50.92 | $215.95 | $11.0K | No | Form 4 ↗ |
| 2026-04-02 | 2026-03-31 | Jain Vishal, VICE PRESIDENT | MExercise | +50.92 | $215.95 | $11.0K | No | Form 4 ↗ |
| 2026-04-02 | 2026-03-31 | Ziebell William F VICE PRESIDENT | FTax | −50.92 | $215.95 | $11.0K | No | Form 4 ↗ |
| 2026-04-02 | 2026-03-31 | Ziebell William F, VICE PRESIDENT | MExercise | +50.92 | $215.95 | $11.0K | No | Form 4 ↗ |
| 2026-04-01 | 2026-03-31 | Bay Walter D. General Counsel | FTax | −627.00 | $215.95 | $135K | No | Form 4 ↗ |
| 2026-04-01 | 2026-03-31 | Bay Walter D., General Counsel | MExercise | +1.42K | $215.95 | $306K | No | Form 4 ↗ |
| 2026-04-01 | 2026-03-31 | CARY RICHARD C Controller, CAO | FTax | −139.00 | $215.95 | $30.0K | No | Form 4 ↗ |
| 2026-04-01 | 2026-03-31 | CARY RICHARD C, Controller, CAO | MExercise | +471.70 | $215.95 | $102K | No | Form 4 ↗ |
| 2026-04-01 | 2026-03-31 | GALLAGHER J PATRICK JR CEO | FTax | −2.37K | $215.95 | $512K | No | Form 4 ↗ |
| 2026-04-01 | 2026-03-31 | GALLAGHER J PATRICK JR, CEO | MExercise | +5.35K | $215.95 | $1.15M | No | Form 4 ↗ |
| 2026-03-24 | 2026-03-23 | GALLAGHER THOMAS JOSEPH President | GGift | −176.00 | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-24 | 2026-03-23 | GALLAGHER THOMAS JOSEPH, President | GGift | +264.00 | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-24 | 2026-03-23 | GALLAGHER THOMAS JOSEPH, President | GGift | −264.00 | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-24 | 2026-03-23 | GALLAGHER THOMAS JOSEPH, President | GGift | −528.00 | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-24 | 2026-03-23 | GALLAGHER THOMAS JOSEPH, President | GGift | +264.00 | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-24 | 2026-03-23 | GALLAGHER THOMAS JOSEPH, President | GGift | −264.00 | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-24 | 2026-03-23 | Gallagher Patrick Murphy Chief Operating Officer | GGift | +704.00 | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-24 | 2026-03-23 | Gallagher Patrick Murphy, Chief Operating Officer | GGift | −704.00 | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-18 | 2026-03-16 | Pesch Michael Robert Vice President | FTax | −525.00 | $207.93 | $109K | No | Form 4 ↗ |
| 2026-03-18 | 2026-03-15 | Ziebell William F VICE PRESIDENT | FTax | −2.32K | $207.93 | $483K | No | Form 4 ↗ |
| 2026-03-18 | 2026-03-15 | Ziebell William F, VICE PRESIDENT | MExercise | +6.93K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-18 | 2026-03-15 | Ziebell William F, VICE PRESIDENT | MExercise | −6.93K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-18 | 2026-03-15 | Ziebell William F, VICE PRESIDENT | AAward | +6.93K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-17 | 2026-03-16 | Jain Vishal VICE PRESIDENT | FTax | −501.00 | $207.93 | $104K | No | Form 4 ↗ |
| 2026-03-17 | 2026-03-16 | Mead Christopher E VICE PRESIDENT | FTax | −432.00 | $207.93 | $89.8K | No | Form 4 ↗ |
| 2026-03-17 | 2026-03-16 | Gallagher Patrick Murphy Chief Operating Officer | FTax | −525.00 | $207.93 | $109K | No | Form 4 ↗ |
| 2026-03-17 | 2026-03-15 | Jain Vishal VICE PRESIDENT | FTax | −2.65K | $207.93 | $550K | No | Form 4 ↗ |
| 2026-03-17 | 2026-03-15 | Jain Vishal, VICE PRESIDENT | MExercise | +6.21K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-17 | 2026-03-15 | Jain Vishal, VICE PRESIDENT | AAward | +6.21K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-17 | 2026-03-15 | Pietrucha Susan E Chief Human Resources Officer | FTax | −2.19K | $207.93 | $455K | No | Form 4 ↗ |
| 2026-03-17 | 2026-03-15 | Pietrucha Susan E, Chief Human Resources Officer | MExercise | +6.61K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-17 | 2026-03-15 | Pietrucha Susan E, Chief Human Resources Officer | MExercise | −6.61K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-17 | 2026-03-15 | Pietrucha Susan E, Chief Human Resources Officer | AAward | +6.61K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-17 | 2026-03-15 | Mead Christopher E VICE PRESIDENT | FTax | −2.02K | $207.93 | $420K | No | Form 4 ↗ |
| 2026-03-17 | 2026-03-15 | Mead Christopher E, VICE PRESIDENT | MExercise | +5.26K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-17 | 2026-03-15 | Mead Christopher E, VICE PRESIDENT | MExercise | −5.26K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-17 | 2026-03-15 | Mead Christopher E, VICE PRESIDENT | AAward | +5.26K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-17 | 2026-03-15 | Hudson Scott R Vice President | FTax | −2.83K | $207.93 | $588K | No | Form 4 ↗ |
| 2026-03-17 | 2026-03-15 | Hudson Scott R, Vice President | MExercise | +7.17K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-17 | 2026-03-15 | Hudson Scott R, Vice President | MExercise | −7.17K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-17 | 2026-03-15 | Hudson Scott R, Vice President | AAward | +7.17K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-17 | 2026-03-15 | HOWELL DOUGLAS K VP & Chief Financial Officer | FTax | −3.87K | $207.93 | $804K | No | Form 4 ↗ |
| 2026-03-17 | 2026-03-15 | HOWELL DOUGLAS K, VP & Chief Financial Officer | MExercise | +9.08K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-17 | 2026-03-15 | HOWELL DOUGLAS K, VP & Chief Financial Officer | MExercise | −9.08K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-17 | 2026-03-15 | HOWELL DOUGLAS K, VP & Chief Financial Officer | AAward | +9.08K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-17 | 2026-03-15 | GALLAGHER THOMAS JOSEPH President | FTax | −4.07K | $207.93 | $846K | No | Form 4 ↗ |
| 2026-03-17 | 2026-03-15 | GALLAGHER THOMAS JOSEPH, President | MExercise | +9.56K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-17 | 2026-03-15 | GALLAGHER THOMAS JOSEPH, President | MExercise | −9.56K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-17 | 2026-03-15 | GALLAGHER THOMAS JOSEPH, President | AAward | +9.56K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-17 | 2026-03-15 | Gallagher Patrick Murphy Chief Operating Officer | FTax | −1.96K | $207.93 | $408K | No | Form 4 ↗ |
| 2026-03-17 | 2026-03-15 | Gallagher Patrick Murphy, Chief Operating Officer | MExercise | +4.62K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-17 | 2026-03-15 | Gallagher Patrick Murphy, Chief Operating Officer | MExercise | −4.62K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-17 | 2026-03-15 | Gallagher Patrick Murphy, Chief Operating Officer | AAward | +4.62K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-17 | 2026-03-15 | GALLAGHER J PATRICK JR CEO | FTax | −19.2K | $207.93 | $3.99M | No | Form 4 ↗ |
| 2026-03-17 | 2026-03-15 | GALLAGHER J PATRICK JR, CEO | MExercise | +45.0K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-17 | 2026-03-15 | GALLAGHER J PATRICK JR, CEO | MExercise | −45.0K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-17 | 2026-03-15 | GALLAGHER J PATRICK JR, CEO | AAward | +45.0K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-17 | 2026-03-15 | CARY RICHARD C Controller, CAO | FTax | −181.00 | $207.93 | $37.6K | No | Form 4 ↗ |
| 2026-03-17 | 2026-03-15 | Bloom Mark H. Vice President | FTax | −793.00 | $207.93 | $165K | No | Form 4 ↗ |
| 2026-03-17 | 2026-03-15 | Bloom Mark H., Vice President | MExercise | +3.51K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-17 | 2026-03-15 | Bloom Mark H., Vice President | MExercise | −3.51K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-17 | 2026-03-15 | Bloom Mark H., Vice President | AAward | +3.51K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-17 | 2026-03-15 | Bay Walter D. General Counsel | FTax | −2.41K | $207.93 | $501K | No | Form 4 ↗ |
| 2026-03-17 | 2026-03-15 | Bay Walter D., General Counsel | MExercise | +7.09K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-17 | 2026-03-15 | Bay Walter D., General Counsel | MExercise | −7.09K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-17 | 2026-03-15 | Bay Walter D., General Counsel | AAward | +7.09K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-17 | 2026-03-13 | HOWELL DOUGLAS K VP & Chief Financial Officer | FTax | −8.64K | $207.93 | $1.80M | No | Form 4 ↗ |
| 2026-03-17 | 2026-03-13 | HOWELL DOUGLAS K, VP & Chief Financial Officer | MExercise | +14.1K | $79.59 | $1.12M | No | Form 4 ↗ |
| 2026-03-10 | 2026-03-09 | Jain Vishal VICE PRESIDENT | FTax | −4.33K | $219.20 | $948K | No | Form 4 ↗ |
| 2026-03-10 | 2026-03-09 | Jain Vishal, VICE PRESIDENT | MExercise | +8.45K | $79.59 | $673K | No | Form 4 ↗ |
| 2026-03-09 | 2026-03-06 | Hudson Scott R Vice President | SSale | −3.80K | $227.57 | $865K | No | Form 4 ↗ |
| 2026-03-09 | 2026-03-06 | Hudson Scott R, Vice President | MExercise | +3.80K | $79.59 | $302K | No | Form 4 ↗ |
| 2026-03-09 | 2026-03-05 | Mead Christopher E VICE PRESIDENT | SSale | −4.00K | $227.12 | $908K | No | Form 4 ↗ |
| 2026-03-09 | 2026-03-05 | Mead Christopher E, VICE PRESIDENT | MExercise | +4.00K | $79.59 | $318K | No | Form 4 ↗ |
| 2026-03-09 | 2026-03-05 | Pesch Michael Robert Vice President | FTax | −3.73K | $228.84 | $854K | No | Form 4 ↗ |
| 2026-03-09 | 2026-03-05 | Pesch Michael Robert, Vice President | MExercise | +6.75K | $79.59 | $537K | No | Form 4 ↗ |
| 2026-03-05 | 2026-03-03 | Gallagher Patrick Murphy Chief Operating Officer | GGift | +150.00 | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-05 | 2026-03-03 | Gallagher Patrick Murphy, Chief Operating Officer | GGift | +600.00 | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-05 | 2026-03-03 | Gallagher Patrick Murphy, Chief Operating Officer | GGift | +150.00 | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-04 | 2026-03-03 | GALLAGHER J PATRICK JR CEO | GGift | +600.00 | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-04 | 2026-03-03 | GALLAGHER J PATRICK JR, CEO | GGift | −1.35K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-04 | 2026-03-03 | GALLAGHER J PATRICK JR, CEO | GGift | −1.35K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-04 | 2026-03-02 | GALLAGHER J PATRICK JR, CEO | SSale | −27.4K | $230.31 | $6.32M | No | Form 4 ↗ |
| 2026-03-04 | 2026-03-02 | GALLAGHER J PATRICK JR, CEO | MExercise | +44.0K | $79.59 | $3.51M | No | Form 4 ↗ |
| 2026-03-03 | 2026-03-03 | Gallagher Patrick Murphy Chief Operating Officer | MExercise | +5.00K | $79.59 | $398K | No | Form 4 ↗ |
| 2026-03-02 | 2026-03-01 | JOHNSON DAVID S Director | AAward | +213.63 | $228.20 | $48.7K | No | Form 4 ↗ |
| 2026-03-02 | 2026-03-01 | Miskel Christopher C. Director | AAward | +175.28 | $228.20 | $40.0K | No | Form 4 ↗ |
| 2026-03-02 | 2026-02-26 | GALLAGHER THOMAS JOSEPH President | FTax | −17.6K | $221.70 | $3.89M | No | Form 4 ↗ |
| 2026-03-02 | 2026-02-26 | GALLAGHER THOMAS JOSEPH, President | MExercise | +28.2K | $75.59 | $2.13M | No | Form 4 ↗ |
Insiders — a company’s officers, directors and holders of more than 10% of its stock — must report any trade in that stock to the SEC on a Form 4 within two business days. Each row here is one transaction from those filings.
The transaction code tells you what happened: Purchase (P) and Sale (S) are open-market trades — the ones markets watch most; Award (A) is a granted stock or unit, Option exercise (M) converts options into shares, and Gift (G) is a transfer for no consideration. Awards, exercises and gifts are largely compensation or administrative, not a directional bet.
One caveat on sales: many are made under a Rule 10b5-1 plan scheduled months in advance, so a sale is not automatically a bearish signal. Insider activity is a noisy input — read it alongside the filings, not on its own.
See also AJG’s full analysis or the market-wide insider trading feed. The tabs above jump to AJG’s other SEC data.
Source: SEC Form 4 filings for AJG, parsed from EDGAR. Transaction prices are as reported in the filing — SEC public-domain data, not market quotes. Values are shares × reported price where both are disclosed; grants and gifts often carry no price. A delayed record of what insiders reported, not a live position or a recommendation.
Research and education only — not financial advice. TENKis not a registered investment adviser or broker-dealer and gives no personalized advice. Every call is impersonal — identical for all users, generated on a schedule from SEC filings plus a delayed/third-party price feed — may be wrong or out of date, and is not a recommendation to buy or sell any security. The operator and an affiliated trading operation may hold or trade the securities TENK rates; see Disclosures. Past performance does not guarantee future results. Do your own research.