HUBB: Material agreement · New financial obligation · Other company developments

Item 1.01 Entry into a Material Definitive Agreement. On June 2, 2026, Hubbell Incorporated (“Hubbell”) entered into an underwriting agreement (the “Underwriting Agreement”) with J.P. Morgan Securities LLC, BofA Securities, Inc. and HSBC Securities (USA) Inc., as representatives of the several underwriters named in Schedule I thereto (collectively, the “Underwriters”), relating to Hubbell’s public offering of $500,000,000 aggregate principal amount of its 4.650% Senior Notes due 2031 (the “2031 Notes”), $700,000,000 aggregate principal amount of its 4.900% Senior Notes due 2033 (the “2033 Notes”) and $700,000,000 aggregate principal amount of its 5.150% Senior Notes due 2036 (the “2036 Notes” and, together with the 2031 Notes and the 2033 Notes, the “Notes”). The offering of the Notes was made pursuant to Hubbell’s shelf registration statement on Form S-3 (Registration No. 333-289041), which became automatically effective upon filing with the U.S. Securities and Exchange Commission (the “SEC”) on July 29, 2025, and a preliminary prospectus supplement and prospectus supplement filed with the SEC related to the offering of the Notes. Pursuant to the Underwriting Agreement, Hubbell agreed to sell the Notes to the Underwriters and the Underwriters agreed to purchase the Notes for resale to the public. The Underwriting Agreement includes customary representations, warranties and covenants by Hubbell. The Underwriting Agreement also provides for customary indemnification by each of Hubbell and the Underwriters against certain liabilities and customary contribution provisions in respect of those liabilities. The net proceeds from the offering of the Notes were approximately $1,869.6 million after deducting the underwriting discount and estimated offering expenses payable by Hu