[8-K] Arthur J. Gallagher & Co. Reports Material Event

Rhea-AI Filing Summary

Arthur J. Gallagher & Co. filed a current report describing its plan to host an investor meeting on December 16, 2025. A webcast of the meeting and related presentation materials are available through the investor relations section of its website.

The updated CFO Commentary included in these materials contains certain estimates for 2025 and 2026 results and net after-tax cash flows from clean energy investments in 2025 and future years, together with cautionary language about forward-looking statements.

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

__________________________

Form 8-K

__________________________

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

December 16, 2025

Date of Report: (Date of earliest event reported)

__________________________

ARTHUR J. GALLAGHER & CO.

(Exact name of registrant as specified in its charter)

__________________________

Delaware

1-09761

36-2151613

(State or other jurisdiction of incorporation or organization)

(Commission File Number)

(I.R.S. Employer Identification Number)

2850 Golf Road, Rolling Meadows, Illinois 60008, (630) 773-3800

(Address, including zip code and telephone number, including area code, of registrant’s principal executive offices)

Not Applicable

(Former name or former address, if changed since last report)

__________________________

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

o			Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
o			Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
o			Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
o			Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class

Trading Symbol(s)

Name of each exchange on which registered

Common Stock, $1.00 par value

AJG

New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 7.01.          Regulation FD Disclosure

On December 3, 2025, Arthur J. Gallagher & Co. (the “Company”) announced plans to host an investor meeting on Tuesday, December 16, 2025. As previously announced, a webcast of the meeting and related presentation materials, including an updated “CFO Commentary,” are available through the investor relations page of the Company's website. The CFO Commentary includes certain estimates relating to 2025 and 2026 results, net after-tax cash flows from clean energy investments in 2025 and future years, and cautionary language regarding forward-looking statements.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

									Arthur J. Gallagher & Co.
Date: December 16, 2025			By:						/s/ Walter D. Bay
									Walter D. Bay Vice President, General Counsel and Secretary