Shareholder Vote

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 Date of Report (Date of earliest event reported): May 7, 2024     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 W. Golf Road , Rolling Meadows , Illinois   60008-4050 (Address of principal executive offices)   (Zip Code) Registrant’s telephone number, including area code: (630) 773-3800 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:   ☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)   ☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)   ☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))   ☐ 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 5.07. Submission of Matters to a Vote of Security Holders. Arthur J. Gallagher & Co. (the “ Company ”) held its Annual Meeting of Stockholders on May 7, 2024 (the “ Annual Meeting ”). At the Annual Meeting, the Company’s stockholders (i) elected all nine director nominees, whose names appear below, to serve until the Company’s 2025 Annual Meeting of Stockholders, (ii) approved ratification of the appointment of Ernst & Young LLP as the Company’s Independent Registered Public Accounting Firm for the fiscal year ending December 31, 2024 (“ Auditor Ratification ”), and (iii) approved, on a non-binding advisory basis, the Company’s named executive officers’ compensation (“ Say-on-Pay ”). The final voting results are set forth below:   Election of Directors    For      Against      Abstain      Broker Non-Votes   Sherry Barrat      171,496,595        6,605,422        260,007        15,844,935   Deborah Caplan      177,916,908        174,298        270,818        15,844,935   Teresa Clarke      177,539,153        564,535        258,336        15,844,935   John Coldman      176,094,010        1,997,447        270,567        15,844,935   Pat Gallagher      165,485,147        12,186,814        690,063        15,844,935   David Johnson      167,953,339        10,123,161        285,524        15,844,935   Chris Miskel      162,442,213        15,646,451        273,360        15,844,935   Ralph Nicoletti      176,395,689        1,693,603        272,732        15,844,935   Norman Rosenthal      173,123,991        4,973,659        264,374        15,844,935        For      Against      Abstain          Auditor Ratification      181,048,278        11,629,455        1,529,226           For      Against      Abstain      Broker Non-Votes   Say-on-Pay      161,134,482        16,051,758        1,175,784        15,844,935   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: May 8, 2024     By:   /s/ Walter D. Bay       Walter D. Bay       Vice President, General Counsel and Secretary