| Douglas Family Trust +3 co-filersReporting owner · 50 transactions | — | 18.37M†as of Oct 2010 | — | 1.10M | — |
| Douglas Family Trust +4 co-filersReporting owner · 111 transactions | — | 2.04M†as of Apr 2015 | — | 8.29M | — |
| McGahn Daniel PChairman, President and CEO, Director · 88 transactions | — | 1.15M† | 2.61M | 50.0K | 648.4K |
| Kosiba John W JRSVP, CFO & Treasurer · 78 transactions | — | 703.4K† | 855.1K | 51.3K | 519.4K |
| Yurek Gregory JDirector · 537 transactions | — | 177.0K†as of Jun 2011 | 1.69M | — | 1.67M |
| DiCecco Susan JSVP, Corporate Administration · 13 transactions | — | 151.5K†as of Jan 2013 | 183.1K | — | 8.5K |
| Crisp Peter ODirector · 7 transactions | — | 118.6Kas of Dec 2011 | 62.0K | — | — |
| Collett John RSVP, Chief Strategy Officer · 1 transaction | — | 97.5K†as of May 2010 | 10.8K | — | — |
| Malozemoff Alexis PEVP & Chief Technical Officer · 222 transactions | — | 83.4K†as of May 2009 | 187.0K | — | 177.5K |
| Sage Andrew G C IIDirector · 2 transactions | — | 76.0Kas of Mar 2007 | 41.0K | — | — |
| Stankiewicz Charles WEVP & GM, AMSC Power Systems · 63 transactions | — | 70.1K†as of Aug 2011 | 256.3K | — | 177.0K |
| Oliver David R JrDirector · 23 transactions | — | 63.8K | 83.4K | 2.6K | 2.4K |
| Henry David AEVP, CFO & Treasurer · 34 transactions | — | 62.1K†as of Aug 2016 | 732.1K | — | 118.3K |
| Budhraja Vikram SDirector · 23 transactions | — | 59.3Kas of Jun 2022 | 103.7K | 12.5K | 3.0K |
| House Arthur HDirector · 12 transactions | — | 51.8K | 59.5K | — | 9.7K |
| Poor Timothy D.EVP, Windtec Solutions · 32 transactions | — | 48.1K†as of Jan 2013 | 270.3K | — | 19.0K |
| Maguire James FEVP, Operations · 15 transactions | — | 47.6K†as of Aug 2016 | 782.0K | — | 182.1K |
| Winter Terry MExecutive VP, Operations · 1 transaction | — | 44.8K†as of Jul 2006 | 18.0K | — | — |
| Drouin RichardDirector · 52 transactions | — | 39.0Kas of Apr 2014 | 70.0K | — | 40.0K |
| Wood John W JrDirector · 17 transactions | — | 36.2Kas of May 2019 | 47.5K | 11.3K | — |
| Santamaria Angelo RSVP Global Manufacturing · 21 transactions | — | 36.0K†as of Aug 2011 | 110.5K | — | 76.1K |
| Littlefield Barbara G.Director · 7 transactions | — | 35.4K | 35.4K | — | — |
| Lenehan Pamela FDirector · 8 transactions | — | 27.2Kas of Jul 2018 | 34.4K | — | — |
| Sande John VanderDirector · 73 transactions | — | 22.2Kas of Jul 2017 | 90.5K | — | 145.1K |
| Klein Margaret D.Director · 5 transactions | — | 19.5K | 19.0K | 500 | — |
| Dambier Laura A.Director · 5 transactions | — | 15.0K | 19.0K | — | 4.0K |
| Donnelly Terence RobertDirector · 1 transaction | — | 2.7K | 2.7K | — | — |
| Rosa Thomas MVP, CFO & Treasurer · 4 transactions | — | 2.5K†as of Mar 2007 | 24.0K | — | 3.0K |
| Baciocco Albert J JrDirector · 45 transactions | — | 0as of May 2007 | 55.0K | — | 50.0K |