What SEC filings does Arthur J. Gallagher & Co. submit to the SEC?

Arthur J. Gallagher & Co. (AJG) submits several types of SEC filings including Form 4 (insider transactions), Form 144 (proposed insider sales), 8-K reports (material events such as earnings releases, acquisitions, leadership changes), and periodic reports — the 10-Q (quarterly) and 10-K (annual). All filings are publicly available through SEC EDGAR.

What does a Form 4 filing tell me about AJG?

A Form 4 for AJG discloses a transaction by a company insider — typically a director, officer, or 10%+ shareholder. It shows the source-reported date, number of shares, price, and updated ownership. These facts do not establish motive or predict future returns.

How do I interpret an 8-K filing from Arthur J. Gallagher & Co.?

An 8-K signals a material event requiring prompt disclosure. Common triggers include earnings pre-announcements, acquisitions, leadership appointments or departures, credit changes, or regulatory actions. Read the item codes inside the filing to understand exactly what was disclosed before drawing conclusions.

What is the difference between a 10-K and 10-Q for AJG?

The 10-K is Arthur J. Gallagher & Co.'s annual report with fully audited financial statements, comprehensive MD&A, and complete risk factor disclosures — filed 60–90 days after fiscal year-end. The 10-Q is a lighter quarterly report with unaudited financials filed for the first three quarters. Together they provide a continuous financial picture of the company.

Where can I see all AJG SEC filings directly on EDGAR?

You can view all historical Arthur J. Gallagher & Co. filings on the SEC EDGAR company page for AJG. Each filing card on this page links directly to the original SEC document.

How often does Arthur J. Gallagher & Co. file with the SEC?

Arthur J. Gallagher & Co. files one 10-K per year and up to three 10-Qs per year. Form 4 insider transactions must be reported within two business days of each trade, so the frequency depends on how often insiders are buying or selling AJG shares. 8-K filings occur whenever a material event happens — which can be several times per quarter for an active company.

AJG SEC Filing News — Arthur J. Gallagher & Co.

Latest SEC filings for Arthur J. Gallagher & Co. (AJG) explained in plain English. Covers insider buying and selling (Form 4), proposed insider sales (Form 144), material company events (8-K), and quarterly & annual reports (10-Q / 10-K). StrongBuyAnalytics provides navigation and brief excerpts or summaries; original filings remain at the SEC/source links and were authored by their filers, not StrongBuyAnalytics. Filing dates shown are source dates. Coverage and detection can be delayed or incomplete because of SEC availability, amendments, parsing, caching, or outages. Latest source filing date shown: 2026-09-17.

Arthur J. Gallagher & Co., together with its subsidiaries, provides insurance and reinsurance brokerage, consulting, and third-party property/casualty claims settlement and administration services to entities and individuals worldwide. The company operates in Brokerage and Risk Management segments. Its Brokerage segment offers retail and wholesale insurance and reinsurance brokerage services; assists retail brokers and other non-affiliated brokers in the placement of specialized and hard-to-plac…

Sector: Financial Services Industry: Insurance Brokers Market Cap: $64.4B

Total Filings

Bullish Classifications

Bearish Classifications

Insider Transactions

Material Events (8-K)

Periodic Reports

Rule-based classifications for AJG currently lean bearish. Of the 20 filing records displayed, 4 carry bearish classifications (such as insider sales or negative 8-K disclosures) versus 0 bullish. This does not necessarily signal fundamental deterioration — insiders sell for many reasons — but it is worth monitoring alongside the company's core financial metrics.

AJG Filing Activity Snapshot 2026-07-06 — 2026-09-17

Insider Transactions (Form 4)

0 buys vs 4 sells

Net insider selling in this period — insiders sell for many reasons beyond conviction.

Largest Form 144 Filing

$3.80M

Matrix Trust Co · 2026-09-15

15,000 shares · Form 144

Form 144 Notices

Proposed insider sales filed — Form 144 is a notice of intent, not a confirmed transaction. Actual sales are confirmed via Form 4.

Insider Transactions 11 · Forms 3, 4 and 5

A Form 4 is filed within two business days of a company insider — an officer, a director, or a holder of more than ten percent of the stock — changing their position in the shares. All 11 filings in this group are Form 4s for Arthur J. Gallagher & Co.

The difficulty with reading these filings as a group is that a single form type covers transactions that mean entirely different things. An executive spending their own money to buy stock and an executive having shares withheld to pay tax on a vesting grant both appear as a Form 4. Every filing below is therefore tagged with the nature of the underlying transaction, taken from the transaction code reported on the form itself.

Across the 11 insider filings shown, the breakdown is 4 open-market sale, 3 option exercise, 3 gift and 1 compensation award. 4 of them involved a discretionary open-market trade; the rest are compensation and administrative mechanics.

What each transaction type means

Open-market sale ×4: The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.
Option exercise ×3: The insider converted options into shares. The exercise price was fixed when the options were granted, so the timing usually tracks an expiry schedule.
Gift ×3: Shares were transferred as a gift, typically for estate or charitable planning. No sale into the market took place.
Compensation award ×1: Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Form 4 Open-market sale Insider Selling 2026-09-17

AJG insider CARY RICHARD C (Controller, CAO) sold 1,000 shares (~$252.9K)

CARY RICHARD C, listed as Controller, CAO at Arthur J. Gallagher & Co., reported an open-market sale of 1,000 AJG shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`S`	Open-market sale	1,000	$252.86	$252.9K

Filing: Form 4 (Insider Transaction) Insider: CARY RICHARD C (Controller, CAO) Shares: 1,000 Est. Value: $252.9K

View on SEC EDGAR → Open Filing Document →

Form 4 Gift Tax / Compensation Filing 2026-09-10

AJG insider Form 4 filed for equity award, exercise, or tax withholding

Gallagher Patrick Murphy (Chief Operating Officer) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were transferred as a gift, typically for estate or charitable planning. No sale into the market took place.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`G`	Gift	49,988	—	—

Filing: Form 4 (Insider Transaction) Insider: Gallagher Patrick Murphy (Chief Operating Officer) Shares: 49,988

View on SEC EDGAR → Open Filing Document →

Form 4 Gift Tax / Compensation Filing 2026-09-10

AJG insider Form 4 filed for equity award, exercise, or tax withholding

GALLAGHER J PATRICK JR (Director, CEO) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were transferred as a gift, typically for estate or charitable planning. No sale into the market took place.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`G`	Gift	49,988	—	—

Filing: Form 4 (Insider Transaction) Insider: GALLAGHER J PATRICK JR (Director, CEO) Shares: 49,988

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market sale Insider Selling 2026-09-04

AJG insider Hudson Scott R (Vice President) sold 12,000 shares (~$3.17M)

Hudson Scott R, listed as Vice President at Arthur J. Gallagher & Co., reported an open-market sale of 12,000 AJG shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`M`	Option exercise	12,000	$86.17	$1.03M
`S`	Open-market sale	12,000	$264.13	$3.17M
`M`	Option exercise derivative · Non-qualified Stock Option	12,000	—	—

Filing: Form 4 (Insider Transaction) Insider: Hudson Scott R (Vice President) Shares: 12,000 Est. Value: $3.17M

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-09-02

AJG insider Form 4 filed for equity award, exercise, or tax withholding

Miskel Christopher C. (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award	152	$262.00	$39.8K

Filing: Form 4 (Insider Transaction) Insider: Miskel Christopher C. (Director) Shares: 152

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market sale Insider Selling 2026-08-26

AJG insider Bay Walter D. (General Counsel) sold 12,000 shares (~$3.24M)

Bay Walter D., listed as General Counsel at Arthur J. Gallagher & Co., reported an open-market sale of 12,000 AJG shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`S`	Open-market sale	12,000	$270.08	$3.24M

Filing: Form 4 (Insider Transaction) Insider: Bay Walter D. (General Counsel) Shares: 12,000 Est. Value: $3.24M

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market sale Insider Selling 2026-08-20

AJG insider Mead Christopher E (VICE PRESIDENT) sold 3,500 shares (~$899.6K)

Mead Christopher E, listed as VICE PRESIDENT at Arthur J. Gallagher & Co., reported an open-market sale of 3,500 AJG shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`M`	Option exercise	3,500	$86.17	$301.6K
`S`	Open-market sale	3,500	$257.02	$899.6K
`M`	Option exercise derivative · Non-qualified Stock Option	3,500	—	—

Filing: Form 4 (Insider Transaction) Insider: Mead Christopher E (VICE PRESIDENT) Shares: 3,500 Est. Value: $899.6K

View on SEC EDGAR → Open Filing Document →

Form 4 Option exercise Tax / Compensation Filing 2026-08-18

AJG insider Form 4 filed for equity award, exercise, or tax withholding

Bloom Mark H. (Vice President) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

The insider converted options into shares. The exercise price was fixed when the options were granted, so the timing usually tracks an expiry schedule.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`M`	Option exercise	1,280	—	—
`F`	Tax withholding on vested shares	606	$251.21	$152.2K
`M`	Option exercise derivative · Phantom Stock	1,280	—	—

Filing: Form 4 (Insider Transaction) Insider: Bloom Mark H. (Vice President) Shares: 1,886

View on SEC EDGAR → Open Filing Document →

Form 4 Gift Tax / Compensation Filing 2026-08-07

AJG insider Form 4 filed for equity award, exercise, or tax withholding

Shares were transferred as a gift, typically for estate or charitable planning. No sale into the market took place.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`G`	Gift	23,800	—	—

Filing: Form 4 (Insider Transaction) Insider: Gallagher Patrick Murphy (Chief Operating Officer) Shares: 23,800

View on SEC EDGAR → Open Filing Document →

Form 4 Option exercise Tax / Compensation Filing 2026-07-06

AJG insider Form 4 filed for equity award, exercise, or tax withholding

Jain Vishal (VICE PRESIDENT) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

The insider converted options into shares. The exercise price was fixed when the options were granted, so the timing usually tracks an expiry schedule.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`M`	Option exercise	2,162	$229.57	$496.3K
`M`	Option exercise derivative · Notional Stock Units	2,162	—	—

Filing: Form 4 (Insider Transaction) Insider: Jain Vishal (VICE PRESIDENT) Shares: 2,162

View on SEC EDGAR → Open Filing Document →

Form 4 Option exercise Tax / Compensation Filing 2026-07-06

AJG insider Form 4 filed for equity award, exercise, or tax withholding

GALLAGHER THOMAS JOSEPH (President) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

The insider converted options into shares. The exercise price was fixed when the options were granted, so the timing usually tracks an expiry schedule.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`M`	Option exercise	351	$229.57	$80.6K
`M`	Option exercise derivative · Notional Stock Units	351	—	—

Filing: Form 4 (Insider Transaction) Insider: GALLAGHER THOMAS JOSEPH (President) Shares: 351

View on SEC EDGAR → Open Filing Document →

Proposed Insider Sales 5 · Form 144

A Form 144 is a notice of intent to sell restricted or control securities. It is not a record that anything was sold. Arthur J. Gallagher & Co. has 5 such notices in this period.

The distinction matters because a Form 144 is frequently reported as though it were a completed insider sale. The filer may sell all of the shares covered, some of them, or none at all, and there is no obligation to update the notice either way. A sale that is actually executed by an officer or director shows up separately on a Form 4, which is the filing to check before treating a proposed sale as a real one.

Form 144 Proposed Insider Sale 2026-09-15

AJG Form 144 filed for proposed insider sale by CARY RICHARD C (1,000 shares) ~$252.9K

CARY RICHARD C filed a Form 144 with the SEC indicating intent to sell AJG (Arthur J. Gallagher & Co.) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.

Filing: Form 144 (Proposed Sale Notice) Insider: CARY RICHARD C Shares: 1,000 Est. Value: $252.9K

View on SEC EDGAR → Open Filing Document →

Form 144 Proposed Insider Sale 2026-09-15

AJG Form 144 filed for proposed insider sale by Matrix Trust Co (15,000 shares) ~$3.80M

Matrix Trust Co filed a Form 144 with the SEC indicating intent to sell AJG (Arthur J. Gallagher & Co.) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.

Filing: Form 144 (Proposed Sale Notice) Insider: Matrix Trust Co Shares: 15,000 Est. Value: $3.80M

View on SEC EDGAR → Open Filing Document →

Form 144 Proposed Insider Sale 2026-09-02

AJG Form 144 filed for proposed insider sale by Hudson Scott R (12,000 shares) ~$3.17M

Hudson Scott R filed a Form 144 with the SEC indicating intent to sell AJG (Arthur J. Gallagher & Co.) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.

Filing: Form 144 (Proposed Sale Notice) Insider: Hudson Scott R Shares: 12,000 Est. Value: $3.17M

View on SEC EDGAR → Open Filing Document →

Form 144 Proposed Insider Sale 2026-08-24

AJG Form 144 filed for proposed insider sale by Walter D. Bay (12,000 shares) ~$3.26M

Walter D. Bay filed a Form 144 with the SEC indicating intent to sell AJG (Arthur J. Gallagher & Co.) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.

Filing: Form 144 (Proposed Sale Notice) Insider: Walter D. Bay Shares: 12,000 Est. Value: $3.26M

View on SEC EDGAR → Open Filing Document →

Form 144 Proposed Insider Sale 2026-08-19

AJG Form 144 filed for proposed insider sale by Mead Christopher E (3,500 shares) ~$899.6K

Mead Christopher E filed a Form 144 with the SEC indicating intent to sell AJG (Arthur J. Gallagher & Co.) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.

Filing: Form 144 (Proposed Sale Notice) Insider: Mead Christopher E Shares: 3,500 Est. Value: $899.6K

View on SEC EDGAR → Open Filing Document →

Material Events 3 · Form 8-K

An 8-K reports a material event in the window between scheduled reports. There are 3 in this period for Arthur J. Gallagher & Co. Each 8-K names the item number it is filed under, and that number is the fastest way to tell a routine disclosure from a consequential one.

Item 2.02 is an earnings release, Item 5.02 is a change of directors or officers, and Item 1.01 or 2.01 covers a material agreement or a completed acquisition. Item 7.01 and Item 8.01 are the general-purpose disclosure items and carry no fixed meaning on their own.

Form 8-K Material Company Update 2026-08-27

AJG filed 8-K — material company event

Arthur J. Gallagher & Co. filed an 8-K with the SEC reporting a material event. Summary unavailable — view the original SEC filing for the full text.

Filing: 8-K (Material Event)

View on SEC EDGAR → Open Filing Document →

Form 8-K Material Company Update 2026-07-30

AJG filed 8-K — material company event

Arthur J. Gallagher & Co. filed an 8-K with the SEC reporting a material event. Summary unavailable — view the original SEC filing for the full text.

Filing: 8-K (Material Event)

View on SEC EDGAR → Open Filing Document →

Form 8-K Material Company Update 2026-07-29

AJG filed 8-K — material company event

Arthur J. Gallagher & Co. filed an 8-K with the SEC reporting a material event. Summary unavailable — view the original SEC filing for the full text.

Filing: 8-K (Material Event)

View on SEC EDGAR → Open Filing Document →

Periodic Reports 1 · Forms 10-K and 10-Q

The periodic reports are where the audited and reviewed financial statements live. This period contains 1 quarterly report (10-Q) for Arthur J. Gallagher & Co.

The two are not equivalent in weight. A 10-K is audited by an external firm and includes the full risk factor disclosure, business description and management discussion; a 10-Q is unaudited, reviewed rather than examined, and much shorter. When a figure in a quarterly report is later revised, the annual report is usually where the correction appears.

An amended report — 10-K/A or 10-Q/A — restates or corrects something in the original filing, and is worth reading against the version it replaces.

Form 10-Q Quarterly Report 2026-08-05

AJG filed Quarterly Report (10-Q)

Arthur J. Gallagher & Co. filed its quarterly report with the SEC. This report includes unaudited financial statements and management discussion for the quarter.

Filing: 10-Q (Quarterly Report)

View on SEC EDGAR → Open Filing Document →

How we classify Arthur J. Gallagher & Co.'s filings

Straight from EDGAR

Each displayed record links to an original source document. StrongBuyAnalytics provides navigation and brief excerpts or summaries, not the filing itself. Parsing may omit context or contain errors, so read the original document in full.

Transaction codes, not guesswork

The nature shown on each insider filing comes from the transaction code the filer entered on the form itself — P for an open-market purchase, A for a compensation award, F for shares withheld to pay tax, M for an option exercise. Where one filing contains several codes, the transaction table lists them line by line.

Why the distinction matters

Insider activity is routinely summarised as buying or selling, which flattens together decisions that mean very different things. Shares withheld for tax on a vesting grant are an automatic administrative step; shares bought on the open market are someone committing their own money at the current price.

What this page does not tell you

A filing records what happened, not why. Form 4 does not always disclose whether a sale was executed under a pre-arranged Rule 10b5-1 plan, and no single filing is a basis for a decision on AJG. Read these alongside the fundamentals rather than in isolation.

Frequently Asked Questions — AJG SEC Filings

More Tools for AJG

AJG Full Stock Analysis AJG Live Chart Institutional Ownership Earnings Calendar Options Flow Scanner Semiconductor Demand Zone Tracker Sector Scanner Browse All Stocks

Want deeper AJG analysis?

View valuation, growth metrics, the rule-based stock-page score, demand zones, peer comparison, and more — all on the AJG stock analysis page.

AJG Full Analysis

Publisher, sources & limitations — September 15, 2026. StrongBuyAnalytics provides navigation and brief excerpts or summaries for educational use. Original filings remain at SEC EDGAR or other displayed source links; StrongBuyAnalytics does not author them. Filing dates are source dates, not publication dates for this page. Coverage can be delayed, incomplete, amended, or unavailable because of SEC/source availability, parsing, caching, or outages. Verify every material statement in the original filing.

Data Sources · Methodology · AI Disclosure · Corrections Policy · Disclaimer