Exhibit 99.1 HUBBELL REPORTS THIRD QUARTER 2024 RESULTS Hubbell Incorporated 40 Waterview Drive Shelton, CT 06484 475-882-4000 • 3Q diluted EPS of $4.05; adjusted diluted EPS of $4.49 (up 14% y/y) • 3Q net sales +5% (organic -1%; net M&A +6%) • 3Q operating margin 21.1%; adjusted operating margin 23.2% (+180 bps y/y) • 2024 diluted EPS outlook of $14.20-$14.40 • Raising 2024 adj. diluted EPS outlook to $16.35-$16.55 SHELTON, CT. (October 29, 2024) – Hubbell Incorporated (NYSE: HUBB) today reported operating ...