| Posco Energy Co, LTD10% owner · 1 transaction | — | 30.79Mas of May 2012 | — | 20.00M | — |
| Bagatelle Warren DDirector · 4 transactions | — | 2.04M†as of Jun 2007 | — | — | 35.1K |
| Gerson James DDirector · 2 transactions | — | 1.37M†as of Apr 2013 | — | 150.0K | — |
| Leitman Jerry DFormer Chairman and CEO · 4 transactions | — | 1.29Mas of Apr 2007 | 1.25M | — | — |
| Kempner Thomas LDirector · 11 transactions | — | 1.03M†as of Jun 2010 | 250.0K | 500.0K | — |
| Bottone Arthur A. Jr.President and CEO, Director · 50 transactions | — | 434.4Kas of Apr 2019 | 2.08M | 35.0K | — |
| Rolls John ADirector · 14 transactions | — | 417.3Kas of Nov 2018 | 64.6K | 1.45M | 100.0K |
| Mahler Joseph GSVP, CFO, CS, Treasurer · 32 transactions | — | 415.5Kas of Apr 2011 | 385.3K | — | 60.0K |
| Bentley Christopher RExecutive VP · 27 transactions | — | 327.8K†as of Mar 2011 | 175.7K | — | 80.0K |
| Brdar DanielChairman, President & CEO, Director · 9 transactions | — | 307.8Kas of Jan 2011 | 192.8K | — | — |
| Rauseo AnthonyChief Operating Officer · 58 transactions | — | 214.9Kas of Apr 2019 | 1.11M | 10.0K | — |
| Lawson William ADirector · 5 transactions | — | 125.8Kas of Apr 2011 | 39.5K | 10.0K | — |
| leo AnthonyEVP & Chief Technology Officer · 32 transactions | — | 117.2Kas of Dec 2023 | 156.4K | — | — |
| Groobey John ChristopherDirector · 14 transactions | — | 94.7Kas of Apr 2022 | 110.7K | — | 16.0K |
| Few JasonCEO, Director · 51 transactions | — | 80.8K | 1.63M | 11.0K | — |
| West Togo D JrDirector · 2 transactions | — | 62.9Kas of Mar 2013 | 62.9K | — | — |
| Maru Hansraj CChief Technology Officer · 5 transactions | — | 55.3Kas of Jan 2006 | 23.0K | — | 28.0K |
| Bromley Richard ADirector · 2 transactions | — | 49.8Kas of Apr 2013 | 29.8K | 20.0K | — |
| Bishop Michael S.EVP, TREASURER & CFO · 99 transactions | — | 25.1K | 1.24M | 1.5K | 13.0K |
| von Althann NaticaDirector · 5 transactions | — | 24.0K | 63.2K | — | — |
| Bingham Betsy BDirector · 8 transactions | — | 23.9K | 147.1K | — | 8.6K |
| Ludemann Bruce ASr. VP, Sales & Marketing · 6 transactions | — | 23.5Kas of Oct 2009 | 70.0K | — | — |
| Hansen Cynthia LDirector · 5 transactions | — | 18.6Kas of Apr 2022 | 18.6K | — | — |
| Arasimowicz Jennifer DEVP, Gen. Counsel, CAO, Secy · 23 transactions | — | 17.1Kas of Apr 2021 | 182.2K | — | 10.0K |
| England James HerbertDirector · 3 transactions | — | 14.4Kas of Apr 2020 | 14.4K | 40.0K | — |
| Hilzinger Matthew FDirector · 2 transactions | — | 14.4Kas of Jun 2020 | 25.7K | — | — |
| Dolger JoshuaGeneral Counsel & Corp Sec · 28 transactions | — | 11.7K | 107.3K | — | — |
| Epstein Glenn HDirector · 2 transactions | — | 10.0Kas of Sep 2008 | — | 10.0K | — |
| Murphy Charles JDirector · 1 transaction | — | 9.9Kas of Jun 2007 | 6.2K | — | — |
| Lisowski MichaelEVP, Strategic Partnerships · 42 transactions | — | 8.6Kas of Dec 2024 | 274.3K | — | — |
| Sims Wilson DonnaDirector · 1 transaction | — | 8.1Kas of Apr 2022 | 8.1K | — | — |
| Browning Paul FDirector · 1 transaction | — | 7.7Kas of Apr 2016 | 4.3K | — | — |
| Feasel MarkEVP & Ch. Commercial Officer · 18 transactions | — | 7.3Kas of Dec 2024 | 215.9K | — | — |
| Achanta ShankarEVP, Chf. Product &Tech Ofc. · 7 transactions | — | 5.6K | 10.3K | — | 2.5K |