| Adage Capital Partners LP +4 co-filersNo Longer 10% Owner, No longer 10% Owner · 3 transactions | — | 3.78M†as of Apr 2008 | — | — | 41.2K |
| Roche Louie E Trust10% owner · 122 transactions | — | 2.08Mas of Sep 2007 | — | — | 289.6K |
| Hubbell Harvey Trust10% owner · 122 transactions | — | 1.41Mas of Sep 2007 | — | — | 196.2K |
| Powers Timothy HDirector · 190 transactions | — | 239.3K†as of May 2014 | 1.48M | — | 765.0K |
| Ratcliffe George JReporting owner · 132 transactions | — | 172.2Kas of May 2014 | 361.0K | — | 352.0K |
| Nord David GDirector · 134 transactions | — | 103.2Kas of Apr 2021 | 586.7K | — | 138.0K |
| Bakker GerbenChairman, President & CEO, Director · 135 transactions | — | 81.8K | 349.9K | — | 83.6K |
| Davies Richard WSenior VP, Legal Affairs · 83 transactions | — | 62.2K†as of Dec 2012 | 370.1K | — | 154.5K |
| Sperry William RExecutive VP and CFO · 136 transactions | — | 51.1Kas of May 2025 | 335.8K | — | 64.0K |
| Edwards George W JrDirector · 7 transactions | — | 36.4Kas of May 2010 | 35.9K | — | — |
| McNally Andrew IVDirector · 51 transactions | — | 34.0Kas of Feb 2015 | 74.7K | — | 27.0K |
| Mulvihill John FrancisTrustee of 10% Owner Trust · 7 transactions | — | 33.8K†as of Mar 2014 | 6.7K | — | 2.3K |
| Hoffman Joel SDirector · 32 transactions | — | 25.1Kas of May 2010 | 43.9K | — | — |
| Covino Gregory FVice President, Controller · 31 transactions | — | 23.0Kas of Dec 2007 | 32.5K | — | 26.1K |
| Poyck Kevin ArthurGroup President, Lighting · 42 transactions | — | 20.8Kas of Aug 2019 | 43.0K | — | 2.1K |
| Tolley William TSenior VP, Growth & Innovation · 81 transactions | — | 20.4K†as of Feb 2016 | 205.4K | 20.0K | 132.5K |
| Murphy W RobertExecutive VP Marketing & Sales · 174 transactions | — | 19.9Kas of May 2015 | 345.4K | — | 252.2K |
| Malloy John F.Director · 3 transactions | — | 19.4K | 341 | 435 | — |
| Malloy John FDirector · 23 transactions | — | 19.1Kas of May 2025 | 11.4K | 7.8K | — |
| Hsieh An-PingSenior VP General Counsel · 46 transactions | — | 19.0Kas of Mar 2019 | 85.6K | — | 6.3K |
| Amato Gary NEVP Hubbell Electrical Segment · 141 transactions | — | 18.9K†as of Dec 2015 | 336.0K | — | 201.3K |
| Van Riper Daniel SDirector · 10 transactions | — | 18.0Kas of May 2012 | 18.0K | — | — |
| Lane Katherine AnneExecutive VP, GC & Secretary · 64 transactions | — | 17.8K | 39.9K | — | 6.1K |
| Smith Thomas PGroup Vice President · 67 transactions | — | 17.2Kas of Dec 2008 | 112.3K | — | 76.9K |
| Wegman Darrin SGroup President, C&I · 68 transactions | — | 17.1Kas of May 2020 | 69.0K | — | 20.2K |
| Ruland Rodd RichardGroup President, C&E · 40 transactions | — | 15.9Kas of May 2020 | 41.8K | 2.0K | 8.9K |
| Mais Stephen MFormer Officer - Sr. VP HR · 92 transactions | — | 14.2Kas of Feb 2022 | 83.0K | — | 32.8K |
| Biggart James HVice President and Treasurer · 116 transactions | — | 10.9K†as of Dec 2015 | 158.8K | — | 115.1K |
| Connolly AllanPresident, Utility Solutions · 22 transactions | — | 10.7Kas of May 2023 | 12.7K | — | 5.3K |
| Keating Neal JDirector · 21 transactions | — | 8.6Kas of May 2024 | 1.6K | 7.0K | — |
| Russell John GDirector · 10 transactions | — | 7.4Kas of May 2023 | 6.3K | 1.1K | — |
| Capozzoli Joseph AnthonySenior Vice President, CFO · 55 transactions | — | 6.7K | 28.6K | — | 2.3K |
| Guzzi AnthonyDirector · 17 transactions | — | 6.5Kas of Sep 2022 | 5.2K | 1.3K | 5 |
| Lau Peter JamesPresident Electrical Solutions · 5 transactions | — | 5.6Kas of Sep 2022 | 6.7K | — | — |
| Swift Richard JDirector · 24 transactions | — | 5.3Kas of May 2018 | 13.4K | — | 9.4K |
| Good LYNN JDirector · 11 transactions | — | 4.3Kas of May 2011 | 3.3K | 1.0K | — |
| FLYNN Alyssa RChief Human Resources Officer · 51 transactions | — | 4.2K | 15.3K | — | 7.8K |
| Brooks E RichardDirector · 40 transactions | — | 3.6K†as of Apr 2010 | 2.2K | — | — |
| Del Nero Jonathan M.Vice President, Controller · 63 transactions | — | 3.6K | 12.7K | — | 5.4K |
| Mikes Mark EugenePresident Electrical Solutions · 50 transactions | — | 3.4K | 19.1K | — | 11.9K |
| Gumbs GregoryPresident, Utility Solutions · 4 transactions | — | 3.4K | 3.4K | — | — |
| Hernandez Rhett AnthonyDirector · 6 transactions | — | 3.2K | 3.2K | — | — |
| Rodriguez Carlos ADirector · 9 transactions | — | 3.1K†as of Dec 2015 | 3.3K | 1.0K | 1.2K |
| Muse Scott HGroup Vice President · 116 transactions | — | 3.0Kas of Aug 2014 | 258.6K | — | 186.4K |
| Lee Maria RicciardoneVP Treasurer/Investor Relation · 9 transactions | — | 2.9Kas of May 2019 | 2.3K | — | — |
| Pollino JenniferDirector · 5 transactions | — | 2.9Kas of May 2025 | 2.9K | — | — |
| Meyer Daniel JDirector · 3 transactions | — | 2.5Kas of May 2008 | 1.4K | — | — |
| Cardoso Carlos M.Director · 1 transaction | — | 2.1K | 341 | — | — |
| Cardoso Carlos MDirector · 20 transactions | — | 1.7Kas of May 2025 | 5.0K | 1.0K | 4.2K |
| Rochow Garrick JDirector · 3 transactions | — | 1.2K | 1.2K | — | — |
| Shawley Steven RDirector · 3 transactions | — | 1.0K†as of Dec 2015 | — | 1.0K | — |
| Dial Debra L.Director · 2 transactions | — | 589as of May 2024 | 439 | 150 | — |
| Baine Edward HDirector · 1 transaction | — | 366as of Aug 2025 | 366 | — | — |
| Marks Judith FranDirector · 1 transaction | — | 0as of Feb 2016 | — | 1.0K | — |