Arthur J. Gallagher trust plans $3.8M stock sale

Matrix Trust Co, as trustee for an Arthur J. Gallagher rabbi trust, plans a Rule 144 sale of 15,000 AJG shares from September 15 to December 14, 2026.

Rhea-AI Filing Summary

Arthur J. Gallagher & Co. (AJG) is the issuer for a planned secondary sale of common stock reported under Rule 144. Matrix Trust Co, as trustee for the Arthur J Gallagher Rabbi Trust, has filed to sell 15,000 shares of common stock through Pershing LLC on the Nasdaq Stock Market, with an indicated aggregate market value of $3,799,500.00. The notice states that these sales are anticipated to occur during the period beginning September 15, 2026 and ending December 14, 2026. The filing also notes that there are 256,300,000 shares of AJG common stock outstanding, which is a baseline figure, not the amount being sold.

Key Figures

Shares to be sold: 15,000 shares Aggregate market value of planned sale: $3,799,500.00 Shares outstanding: 256,300,000 shares +3 more

6 metrics

Shares to be sold 15,000 shares Proposed Rule 144 sale of Arthur J. Gallagher common stock

Aggregate market value of planned sale $3,799,500.00 Value of 15,000 AJG shares covered by the notice

Shares outstanding 256,300,000 shares Arthur J. Gallagher common stock outstanding, as listed in the notice

Sale period September 15, 2026 to December 14, 2026 Anticipated window for sales under this Form 144

Example prior sale 1 3,095 shares for $657,410.56 Sale of AJG common stock on June 18, 2026 by Matrix Trust Company

Example prior sale 2 12,954 shares for $2,793,300.25 Sale of AJG common stock on June 23, 2026 by Matrix Trust Company

Key Terms

Rule 144, Rabbi Trust, Open Market Purchase, Nasdaq Stock Market

4 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Rabbi Trust financial

"Trustee for Arthur J Gallagher Rabbi Trust"

A rabbi trust is a special account a company sets up to hold promised future pay for executives, like bonus or retirement money, so those employees can see there are funds earmarked for them. It matters to investors because it signals the company’s commitment to keep key people, but the money is still part of the company’s assets and can be claimed by creditors if the company goes bankrupt—think of it as a labeled jar that isn’t completely off-limits.

Open Market Purchase financial

"Common Stock | 01/01/2012 | Open Market Purchase | Open Market"

An open market purchase is when a company buys its own shares on public stock exchanges the same way any investor would, rather than through a private deal. Investors care because these purchases reduce the number of shares available, can boost earnings per share and share price, signal that management thinks the stock is undervalued, and use company cash that might otherwise go to reinvestment or dividends — like a business quietly buying back its own tickets at the box office.

Nasdaq Stock Market market

"09/15/2026 | Nasdaq Stock Market"

The Nasdaq Stock Market is a place where many companies' shares are bought and sold, functioning like a marketplace for investing in businesses. It matters to investors because it provides a platform to buy and sell ownership stakes in companies, helping people grow their wealth or fund business growth. Known for hosting many technology and innovative companies, it is a key indicator of the health of those sectors.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does the Form 144 filing disclose for Arthur J. Gallagher & Co. (AJG)?

The filing discloses a planned Rule 144 sale of 15,000 AJG common shares by Matrix Trust Co, as trustee for the Arthur J Gallagher Rabbi Trust, with an indicated aggregate market value of $3,799,500.00, expected between September 15, 2026 and December 14, 2026.

Who is selling Arthur J. Gallagher (AJG) shares in this Form 144?

The seller is Matrix Trust Co, acting as Trustee for the Arthur J Gallagher Rabbi Trust. The Form 144 is a notice for the trust’s account, not a primary share issuance by Arthur J. Gallagher & Co. itself.

How many AJG shares are proposed to be sold and what is their value?

The notice covers a proposed sale of 15,000 shares of Arthur J. Gallagher common stock, with an indicated aggregate market value of $3,799,500.00, to be executed through Pershing LLC on the Nasdaq Stock Market.

Over what time period are the AJG shares expected to be sold?

It is stated that sales covered by this notice are anticipated to be made during the period beginning September 15, 2026 and ending December 14, 2026.

How many Arthur J. Gallagher (AJG) shares are outstanding according to the notice?

The Form 144 lists 256,300,000 shares of Arthur J. Gallagher common stock as outstanding, which is provided as a baseline context figure and is not the amount being sold under this notice.

What prior AJG share sales by the trust are reported in the last three months?

The notice itemizes multiple prior sales of AJG common stock by Matrix Trust Company from June 18, 2026 through September 9, 2026, including individual transactions such as 3,095 shares for $657,410.56 and 12,954 shares for $2,793,300.25.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 09/15/2026 - 12:49 PM Accepted by SEC EDGAR 09/15/2026 - 12:48 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001784277
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	Arthur J. Gallagher & Co.
SEC File Number	001-09761
Address of Issuer	2850 GOLF ROAD ROLLING MEADOWS ILLINOIS 60008-4050
Phone	630-773-3800
Name of Person for Whose Account the Securities are To Be Sold	Matrix Trust Co
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Trustee for Arthur J Gallagher Rabbi Trust

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common Stock	Pershing LLC One Pershing Plaza Jersey City NJ 07399	15000	3799500.00	256300000	09/15/2026	Nasdaq Stock Market

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common Stock	01/01/2012	Open Market Purchase	Open Market			15000	01/01/2012	Cash at time of purchase

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Matrix Trust Company 2800 North Central Ave Suite 900 Phoenix AZ 85004	Common Stock	06/18/2026	3095	657410.56
Matrix Trust Company 2800 North Central Ave Suite 900 Phoenix AZ 85004	Common Stock	06/23/2026	12954	2793300.25
Matrix Trust Company 2800 North Central Ave Suite 900 Phoenix AZ 85004	Common Stock	06/24/2026	11	2409.69
Matrix Trust Company 2800 North Central Ave Suite 900 Phoenix AZ 85004	Common Stock	06/25/2026	28	6153.92
Matrix Trust Company 2800 North Central Ave Suite 900 Phoenix AZ 85004	Common Stock	06/30/2026	1364	311219.78
Matrix Trust Company 2800 North Central Ave Suite 900 Phoenix AZ 85004	Common Stock	07/02/2026	3012	754710.02
Matrix Trust Company 2800 North Central Ave Suite 900 Phoenix AZ 85004	Common Stock	07/06/2026	3	751.68
Matrix Trust Company 2800 North Central Ave Suite 900 Phoenix AZ 85004	Common Stock	07/10/2026	130	32850.99
Matrix Trust Company 2800 North Central Ave Suite 900 Phoenix AZ 85004	Commons Stock	07/14/2026	775	197163.99
Matrix Trust Company 2800 North Central Ave Suite 900 Phoenix AZ 85004	Common Stock	07/17/2026	665	168677.43
Matrix Trust Company 2800 North Central Ave Suite 900 Phoenix AZ 85004	Common Stock	07/20/2026	203	51402.09
Matrix Trust Company 2800 North Central Ave Suite 900 Phoenix AZ 85004	Common Stock	07/22/2026	251	61008.68
Matrix Trust Company 2800 North Central Ave Suite 900 Phoenix AZ 85004	Common Stock	07/30/2026	7038	1803603.06
Matrix Trust Company 2800 North Central Ave Suite 900 Phoenix AZ 85004	Common Stock	08/04/2026	520	127370.49
Matrix Trust Company 2800 North Central Ave Suite 900 Phoenix AZ 85004	Common Stock	08/05/2026	137	34305.81
Matrix Trust Company 2800 North Central Ave Suite 900 Phoenix AZ 85004	Common Stock	08/20/2026	423	110090.88
Matrix Trust Company 2800 North Central Ave Suite 900 Phoenix AZ 85004	Common Stock	08/21/2026	145	38101.76
Matrix Trust Company 2800 North Central Ave Suite 900 Phoenix AZ 85004	Common Stock	08/25/2026	48	12847.77
Matrix Trust Company 2800 North Central Ave Suite 900 Phoenix AZ 85004	Common Stock	08/26/2026	27	7261.97
Matrix Trust Company 2800 North Central Ave Suite 900 Phoenix AZ 85004	Common Stock	08/27/2026	147	38257.84
Matrix Trust Company 2800 North Central Ave Suite 900 Phoenix AZ 85004	Common Stock	09/01/2026	77	20140.28
Matrix Trust Company 2800 North Central Ave Suite 900 Phoenix AZ 85004	Common Stock	09/02/2026	981	258743.71
Matrix Trust Company 2800 North Central Ave Suite 900 Phoenix AZ 85004	Common Stock	09/09/2026	115	28262.67

144: Remarks and Signature

Remarks	It is anticipated that sales covered by this form will be made within the period beginning 9/15/2026 and ending 12/14/2026.
Date of Notice	09/15/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	Eric Simpson
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)