Exhibit 99.1 Date:April 30, 2024 NEWS RELEASE Hubbell Incorporated 40 Waterview Drive Shelton, CT 06484 475-882-4000 HUBBELL REPORTS FIRST QUARTER 2024 RESULTS • Q1 diluted EPS of $2.73; adjusted diluted EPS of$3.60 • Q1 net sales +9% (organic +2%; net M&A +6%) • Operating margin -310 bps year-over-year; adjusted operating margin -100 bps • Anticipate FY24 diluted EPS of $14.10-$14.60; reaffirm adj. diluted EPS of $16.00-$16.50 SHELTON, CT. (April 30, 2024) – Hubbell Incorporated (NYSE: HUBB) today reporte ...