[144] Arthur J. Gallagher & Co. SEC Filing

Rhea-AI Filing Summary

Form 144 filed for Arthur J. Gallagher & Co. (AJG) shows a proposed sale of 12,855 common shares with an aggregate market value of $3,825,688.01, against 256,400,000 shares outstanding. The proposed sale date is 09/08/2025 on the NYSE through Fidelity Brokerage Services LLC.

The filing discloses the acquisition history for the shares to be sold: 4,100 shares from restricted stock vesting on 03/15/2025 (compensation), 1,155 shares from a deferred equity participation program on 04/01/2025 (compensation), and 7,600 shares from option exercise (option granted 03/14/2019) with payment in cash on 09/08/2025. The filer reports nothing to report for securities sold in the past three months and affirms no undisclosed material adverse information.

Positive

• Full compliance with Rule 144 disclosure requirements including acquisition dates and payment nature
• No prior sales in the past three months were reported, indicating this is not part of a rapid sell-down

Negative

• Proposed sale of 12,855 shares valued at $3,825,688.01 increases available supply from an insider
• Option exercise and cash sale on the same date (09/08/2025) could add shares to market liquidity that day

Insights

Securities Analyst

TL;DR: Routine insider sale notice for 12,855 AJG shares, largely from compensation vesting and an option exercise.

The Form 144 is a standard notification required when insiders or affiliated persons propose to sell restricted or control securities. The mix of vested restricted stock, deferred equity shares and option-related shares indicates planned liquidity events rather than an abrupt disposal. The aggregate value disclosed is $3.83 million, which represents a small fraction of the 256.4 million shares outstanding and is unlikely by itself to materially affect market supply.

Corporate Governance Expert

TL;DR: Disclosure aligns with Rule 144 procedures; statements affirm lack of undisclosed material information.

The filing follows required disclosure format and includes the filer’s representation that no material adverse information is undisclosed. Acquisition dates and payment nature are clearly stated, including compensation origin and cash payment for option exercise. No prior three-month sales were reported, reducing concerns about rapid successive disposals by the filer.

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

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

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

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	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	12855	3825688.01	256400000	09/08/2025	NYSE

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	03/15/2025	Restricted Stock Vesting	Issuer			4100	03/15/2025	Compensation
Common	04/01/2025	Deferred Equity Participation Program	Issuer			1155	04/01/2025	Compensation
Common	09/08/2025	Option Granted - 03/14/2019	Issuer			7600	09/08/2025	Cash

* 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

Nothing to Report

144: Remarks and Signature

Remarks

Date of Notice

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

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

What does the AJG Form 144 disclose about the number of shares to be sold?

The filing discloses a proposed sale of 12,855 common shares.

What is the aggregate market value of the AJG shares proposed for sale?

The aggregate market value is reported as $3,825,688.01.

When and where is the AJG proposed sale scheduled?

The approximate date of sale is 09/08/2025 on the NYSE through Fidelity Brokerage Services LLC.

What are the acquisition sources for the AJG shares being sold?

Shares were acquired via restricted stock vesting (4,100 on 03/15/2025), a deferred equity participation program (1,155 on 04/01/2025), and an option exercise (7,600 on 09/08/2025; option granted 03/14/2019).

Did the filer report any sales of AJG securities in the past three months?

The filer reported Nothing to Report for securities sold during the past three months.