SEC Form 4
Arthur J. Gallagher & Co. (AJG) insider trading
In the 12 months to Oct 23, 2026, 5 AJG insiders reported open-market sales of $23.2M across 12 filings; one vice president bought $988.5K.
Latest filing · Last 12 months · Source: SEC EDGAR · How we count
- Open-market sales
- $23.2M
- 12 filings · 5 insiders
- Open-market purchases
- $988.5K
- 1 filing · Michael Robert Pesch, Vice President
Who traded AJG, and when
- Purchase
- Sale
AJG daily close from Oct 23, 2025 to Oct 22, 2026, between $192.00 and $282.49, last $270.98. 12 sale and 1 purchase filings by 6 insiders, marked at their filing dates. Walter D. Bay, General Counsel: sold $7.3M across 2 filings, first filed Dec 23, 2025, last Aug 26, 2026. J. Patrick Gallagher Jr., CEO: sold $6.3M across 1 filing, first filed Mar 4, 2026, last Mar 4, 2026. Scott R. Hudson, Vice President: sold $4.0M across 2 filings, first filed Mar 9, 2026, last Sep 4, 2026. Christopher E. Mead, VICE PRESIDENT: sold $3.2M across 4 filings, first filed Nov 25, 2025, last Aug 20, 2026. Richard C. Cary, Controller, CAO: sold $2.4M across 3 filings, first filed Nov 20, 2025, last Sep 17, 2026. Michael Robert Pesch, Vice President: bought $988.5K across 1 filing, first filed Nov 3, 2025, last Nov 3, 2025.
Largest mark · tap a row for others
J. Patrick Gallagher Jr. · CEO
Sale $6,322,064
27,450 shares at $230.31 avg
Filed Mar 4, 2026 · traded Mar 2
Close on filing date $225.58
Walter D. Bay · General Counsel
General Counsel
$7.3M soldJ. Patrick Gallagher Jr. · CEO
CEO
$6.3M soldScott R. Hudson · Vice President
Vice President
$4.0M soldChristopher E. Mead · VICE PRESIDENT
VICE PRESIDENT
$3.2M soldRichard C. Cary · Controller, CAO
Controller, CAO
$2.4M soldMichael Robert Pesch · Vice President
Vice President
$988.5K boughtHas Arthur J. Gallagher & Co.'s CEO sold stock?
Yes. J. Patrick Gallagher Jr. (CEO) sold 27,450 shares ($6.3M) in Mar 2026.
Open-market trades
13 filings in the last 12 months| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
|---|---|---|---|---|---|---|
| Walter D. Bay | General Counsel | $7.3M | — | 2 | — | |
| J. Patrick Gallagher Jr. | CEO | $6.3M | — | 1 | — | |
| Scott R. Hudson | Vice President | $4.0M | — | 2 | — | |
| Christopher E. Mead | VICE PRESIDENT | $3.2M | — | 4 | — | |
| Richard C. Cary | Controller, CAO | $2.4M | — | 3 | — | |
| Michael Robert Pesch | Vice President | — | $988.5K | 1 | — |
| Filed | Insider | Type | Shares | Avg price | Value | Held after | Source |
|---|---|---|---|---|---|---|---|
traded | Richard C. Cary Controller, CAO | Sale | 1,000 | $252.86 | $252.9K | 46,819 | |
traded | Scott R. Hudson Vice President | Sale | 12,000 | $264.13 | $3.2M | 90,262 | |
traded | Walter D. Bay General Counsel | Sale | 12,000 | $270.08 | $3.2M | 71,292 | |
traded | Christopher E. Mead VICE PRESIDENT | Sale | 3,500 | $257.03 | $899.6K | 22,223 | |
traded | Richard C. Cary Controller, CAO | Sale | 3,000 | $206.00 | $618.0K | 47,819 | |
traded | Scott R. Hudson Vice President | Sale | 3,800 | $227.57 | $864.8K | 85,920 | |
traded | Christopher E. Mead VICE PRESIDENT | Sale | 4,000 | $227.12 | $908.5K | 19,306 | |
traded | J. Patrick Gallagher Jr. CEO | Sale | 27,450 | $230.31 | $6.3M | 96,455 | |
traded | Christopher E. Mead VICE PRESIDENT | Sale | 4,000 | $258.11 | $1.0M | 17,327 | |
traded | Walter D. Bay General Counsel | Sale | 15,850 | $255.00 | $4.0M | 79,549 | |
traded | Christopher E. Mead VICE PRESIDENT | Sale | 1,250 | $250.74 | $313.4K | 17,327 | |
traded | Richard C. Cary Controller, CAO | Sale | 6,000 | $261.00 | $1.6M | 50,668 | |
traded | Michael Robert Pesch Vice President | Purchase | 4,000 | $247.12 | $988.5K | 40,261 |
GET /stocks/filings/vX/form-4?tickers=AJG&filing_date.gte=2025-10-23&sort=filing_date.desc&limit=500{
"status": "OK",
"results": [
{
"tickers": [
"AJG"
],
"issuer_cik": "0000354190",
"owner_cik": "0001185998",
"accession_number": "0000354190-26-000209",
"form_type": "4",
"filing_date": "2026-09-17",
"period_of_report": "2026-09-15",
"issuer_name": "Arthur J. Gallagher & Co.",
"issuer_trading_symbol": "AJG",
"owner_name": "CARY RICHARD C",
"is_officer": true,
"officer_title": "Controller, CAO",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-09-15",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 1000,
"transaction_price_per_share": 252.8583,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 46819.487,
"transaction_value": 252858.30000000002,
"direct_or_indirect": "D"
},
{
"tickers": [
"AJG"
],
"issuer_cik": "0000354190",
"owner_cik": "0001482241",
"accession_number": "0000354190-26-000203",
"form_type": "4",
"filing_date": "2026-09-04",
"period_of_report": "2026-09-02",
"issuer_name": "Arthur J. Gallagher & Co.",
"issuer_trading_symbol": "AJG",
"owner_name": "Hudson Scott R",
"is_officer": true,
"officer_title": "Vice President",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-09-02",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 12000,
"transaction_price_per_share": 264.133,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 90262,
"transaction_value": 3169596,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F1",
"description": "The price reported is an average weighted price. The shares were sold in multiple transactions on 9/2/2026 at prices ranging from $263.894 to $264.15. The reporting person will provide to the Securities and Exchange Commission staff, the issuer, or any security holder of the issuer, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in the footnotes to this Form 4."
}
]
}
]
}
// trimmed to 2 resultsThe response includes every Form 4 record; this page keeps open-market purchases and sales on common stock and removes duplicate joint-filer rows.
Other insider activity (not market trades) · 125 records
- Option exercises46 records
- Tax withholding30 records
- Tax withholding (sold to cover)1 record
- Grants and awards26 records
- Gifts22 records
Reported on Form 4 but not purchases or sales in the market, so not counted in the totals above.
Build this yourself
This page joins two Massive endpoints: Form 4 filings and daily prices. Ask an agent to watch for new filings:
Using the Massive API (massive.com/docs/llms.txt), check Form 4 filings for AJG every day with transaction_code=P and tell me when an insider files an open-market purchase, with their role, shares, price and the filing link.
How to read this page
- Open-market purchase or sale
- A buy or sell of the company's stock at market price. Grants, option exercises, shares withheld for tax, gifts and employee stock plan purchases are listed separately and not counted.
- Filing date
- Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.