APH: Other company developments

Item 8.01 Other Events. On August 6, 2026, Amphenol Corporation (the “Company”) announced the approval of a two-for-one stock split of the Company’s Class A Common Stock in the form of a stock dividend to be distributed on September 2, 2026, to holders of record of the Company’s Class A Common stock at the close of business on August 17, 2026. A copy of the press release announcing the approval of the stock dividend is attached hereto as Exhibit 99.1 and is incorporated by reference herein. The information set forth in this Item 8.01, including the attached Exhibit 99.1, is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that Section, nor shall it be deemed incorporated by reference in any filing by the Company under the Securities Act of 1933, as amended, or the Exchange Act, except as expressly set forth by specific reference in such filing. Item 9.01 Financial Statements and Exhibits. (d) Exhibits Exhibit No. Document Description 99.1 Press Release dated August 6, 2026 104.1 Cover Page Interactive Data File (embedded within the Inline XBRL document). Signature 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. AMPHENOL CORPORATION By: /s/ Lance E. D’Amico Lance E. D’Amico Executive Vice President, Secretary and General Counsel Date: August 6, 2026