NASDAQ:PLUG | Insider Transactions | PLUG POWER INC

PLUG Insider Transactions

1,191 retained open-market purchase and sale rows from SEC Forms 3, 4 and 5, newest first. This page shows rows 1–100; provenance stays internal.

PLUG insiders transaction timeline

PurchaseSale
2006-02-01: 1 purchase — HELMER MAUREEN O2006-06-29: 12 purchases — MMC NORLISK NICKEL, PROKHOROV MIKHAIL D, POTANIN VLADIMIR O and 3 more2007-02-01: 4 sales — Conway Gerard L JR, ELTER JOHN F, SILVESTRI GREGORY A and 1 more2007-09-17: 1 sale — Bucknam Allen K2007-10-05: 6 purchases — MMC NORLISK NICKEL, PROKHOROV MIKHAIL D, POTANIN VLADIMIR O and 3 more2007-10-08: 6 purchases — MMC NORLISK NICKEL, PROKHOROV MIKHAIL D, POTANIN VLADIMIR O and 3 more2007-10-09: 6 purchases — MMC NORLISK NICKEL, PROKHOROV MIKHAIL D, POTANIN VLADIMIR O and 3 more2007-10-10: 6 purchases — MMC NORLISK NICKEL, PROKHOROV MIKHAIL D, POTANIN VLADIMIR O and 3 more2007-10-22: 1 sale — Bucknam Allen K2008-02-01: 138 purchases — MMC NORLISK NICKEL, PROKHOROV MIKHAIL D, POTANIN VLADIMIR O and 3 more2008-02-04: 144 purchases — MMC NORLISK NICKEL, PROKHOROV MIKHAIL D, POTANIN VLADIMIR O and 3 more2008-02-04: 3 sales — Conway Gerard L JR, Johnson Bradley H, SPERRY MARK A2008-02-05: 150 purchases — MMC NORLISK NICKEL, PROKHOROV MIKHAIL D, POTANIN VLADIMIR O and 3 more2008-02-06: 138 purchases — MMC NORLISK NICKEL, PROKHOROV MIKHAIL D, POTANIN VLADIMIR O and 3 more2008-02-07: 186 purchases — MMC NORLISK NICKEL, PROKHOROV MIKHAIL D, POTANIN VLADIMIR O and 3 more2008-02-08: 216 purchases — MMC NORLISK NICKEL, PROKHOROV MIKHAIL D, POTANIN VLADIMIR O and 3 more2008-02-11: 1 sale — Millington Joseph M2008-04-03: 1 sale — Millington Joseph M2008-04-24: 1 sale — PROKHOROV MIKHAIL D2008-12-20: 3 sales — Branton LTD, SMART HYDROGEN, INC., Clayburn Development Inc.2009-04-03: 1 sale — SPERRY MARK A2009-06-12: 1 sale — Conway Gerard L JR2010-03-05: 1 sale — SPERRY MARK A2010-03-19: 1 purchase — MCNAMEE GEORGE C2010-03-22: 1 purchase — Marsh Andrew2010-03-25: 2 purchases — Hansen Erik J, Corless Adrian J2011-05-31: 2 purchases — MCNAMEE GEORGE C, Marsh Andrew2011-12-01: 1 sale — MCNAMEE GEORGE C2011-12-05: 1 sale — GARBERDING LARRY2012-09-28: 1 sale — OJSC Third Generation Co of the Wholesale Electricity Market2013-02-14: 2 sales — MARXE AUSTIN W & GREENHOUSE DAVID M2013-06-12: 1 purchase — Marsh Andrew2013-08-20: 1 purchase — Marsh Andrew2013-12-30: 1 sale — Air Liquide Investissements d'Avenir et de Demonstration2014-03-25: 1 sale — Air Liquide Investissements d'Avenir et de Demonstration2014-06-18: 1 sale — Air Liquide Investissements d'Avenir et de Demonstration2014-07-24: 2 sales — Conway Gerard L JR2014-07-29: 1 sale — Conway Gerard L JR2014-08-26: 1 sale — Air Liquide Investissements d'Avenir et de Demonstration2015-03-30: 1 sale — Air Liquide Investissements d'Avenir et de Demonstration2015-03-31: 1 sale — Air Liquide Investissements d'Avenir et de Demonstration2015-08-26: 1 sale — AXANE SA2015-08-27: 1 purchase — Schmid Keith2015-08-27: 1 sale — Schmid Keith2015-09-22: 1 sale — Air Liquide Investissements d'Avenir et de Demonstration2015-12-16: 1 sale — Air Liquide Investissements d'Avenir et de Demonstration2016-03-17: 1 sale — Air Liquide Investissements d'Avenir et de Demonstration2016-03-24: 1 sale — HELMER MAUREEN O2016-06-16: 1 sale — Air Liquide Investissements d'Avenir et de Demonstration2016-09-22: 1 sale — Air Liquide Investissements d'Avenir et de Demonstration2016-12-21: 1 sale — Air Liquide Investissements d'Avenir et de Demonstration2017-03-16: 1 sale — Air Liquide Investissements d'Avenir et de Demonstration2017-06-21: 1 sale — Air Liquide Investissements d'Avenir et de Demonstration2017-09-07: 2 purchases — MCNAMEE GEORGE C2017-09-08: 2 purchases — MCNAMEE GEORGE C2017-09-11: 1 purchase — MCNAMEE GEORGE C2017-09-12: 1 purchase — MCNAMEE GEORGE C2017-09-13: 1 purchase — MCNAMEE GEORGE C2017-09-14: 1 purchase — MCNAMEE GEORGE C2017-09-15: 1 purchase — MCNAMEE GEORGE C2017-09-22: 1 sale — Air Liquide Investissements d'Avenir et de Demonstration2018-09-12: 1 sale — GRAVES GREGORY B2018-10-15: 1 sale — Conway Gerard L JR2019-03-14: 1 purchase — Marsh Andrew2019-03-18: 1 purchase — MCNAMEE GEORGE C2020-01-06: 1 sale — Conway Gerard L JR2020-01-13: 1 sale — Conway Gerard L JR2020-02-04: 1 sale — Hull Martin Daniel2020-02-12: 1 sale — Hull Martin Daniel2020-02-18: 4 sales — Marsh Andrew, Conway Gerard L JR, Schmid Keith and 1 more2020-02-19: 3 sales — Marsh Andrew, Conway Gerard L JR, Hull Martin Daniel2020-02-20: 2 sales — Schmid Keith, Hull Martin Daniel2020-04-16: 1 sale — HELMER MAUREEN O2020-04-22: 2 sales — FiveT Capital Holding AG, Roth Johannes Minho2020-04-23: 2 sales — FiveT Capital Holding AG, Roth Johannes Minho2020-06-04: 2 sales — Conway Gerard L JR, Marsh Andrew2020-06-05: 1 sale — Marsh Andrew2020-06-08: 1 sale — Marsh Andrew2020-06-23: 3 sales — Marsh Andrew, HELMER MAUREEN O, Schmid Keith2020-06-24: 2 sales — Marsh Andrew, Schmid Keith2020-06-29: 1 sale — Conway Gerard L JR2020-07-01: 1 sale — Schneider Lucas P2020-07-06: 3 sales — MIDDLETON PAUL B, Hull Martin Daniel, Marsh Andrew2020-07-09: 1 sale — Shrestha Sanjay K2020-07-13: 2 sales — MCNAMEE GEORGE C2020-08-06: 2 sales — Shrestha Sanjay K, MCNAMEE GEORGE C2020-08-10: 1 sale — MIDDLETON PAUL B2020-08-19: 2 sales — Marsh Andrew2020-08-27: 1 sale — Conway Gerard L JR2020-08-28: 2 sales — Marsh Andrew, Conway Gerard L JR2020-08-31: 2 sales — Marsh Andrew, Hull Martin Daniel2020-09-08: 1 sale — Conway Gerard L JR2020-09-18: 1 sale — HELMER MAUREEN O2020-09-21: 1 sale — Schmid Keith2020-10-01: 2 sales — Schneider Lucas P, Schmid Keith2020-10-05: 3 sales — Hull Martin Daniel, Schmid Keith, HELMER MAUREEN O2020-10-06: 1 sale — Schmid Keith2020-10-07: 1 sale — Schmid Keith2020-10-08: 1 sale — MCNAMEE GEORGE C2020-10-12: 3 sales — MIDDLETON PAUL B, Kenausis Gregory2020-10-14: 1 sale — Silver Jonathan M2020-11-09: 2 sales — MCNAMEE GEORGE C, Silver Jonathan M2020-11-12: 1 sale — Schmid Keith2020-11-13: 4 sales — FiveT Capital Holding AG, Roth Johannes Minho2020-12-11: 2 sales — WILLIS GARY K2020-12-14: 3 sales — HELMER MAUREEN O, Schmid Keith2020-12-15: 1 sale — Schmid Keith2020-12-17: 2 sales — Schmid Keith, HELMER MAUREEN O2020-12-24: 1 sale — MIDDLETON PAUL B2020-12-28: 4 sales — Kenausis Gregory2021-01-04: 7 sales — Schneider Lucas P, Conway Gerard L JR2021-01-06: 1 sale — MCNAMEE GEORGE C2021-01-07: 1 sale — Conway Gerard L JR2021-01-08: 2 sales — Conway Gerard L JR, MCNAMEE GEORGE C2021-01-11: 1 sale — Silver Jonathan M2021-01-12: 1 sale — MCNAMEE GEORGE C2021-01-13: 1 sale — MCNAMEE GEORGE C2021-01-19: 7 sales — Marsh Andrew2021-07-13: 1 sale — Shrestha Sanjay K2023-10-02: 1 sale — Crespo Jose Luis2024-05-10: 1 sale — MCNAMEE GEORGE C2024-08-01: 1 sale — MCNAMEE GEORGE C2024-11-01: 1 sale — MCNAMEE GEORGE C2025-05-16: 1 purchase — MIDDLETON PAUL B2025-06-09: 1 purchase — MIDDLETON PAUL B2025-06-11: 1 sale — Crespo Jose Luis2025-09-16: 1 sale — Haycraft Benjamin2025-10-10: 1 sale — Haycraft Benjamin2025-11-10: 1 sale — Haycraft Benjamin2025-12-10: 1 sale — Haycraft Benjamin2025-12-15: 1 purchase — Crespo Jose Luis2026-01-12: 1 sale — Haycraft Benjamin2026-06-08: 1 sale — HELMER MAUREEN O2006-02-012026-06-08
Insider profileRoleDateTransactionSharesPrice
HELMER MAUREEN ODirector2026-06-08Sale50,000.0$3.23
Haycraft BenjaminCSO & GM EMEA2026-01-12Sale40,000.0$2.17
Crespo Jose LuisSee Remarks2025-12-15Purchase37,300.0$2.34
Haycraft BenjaminCSO & GM EMEA2025-12-10Sale40,000.0$2.2
Haycraft BenjaminCSO & EVP of EMEA Region2025-11-10Sale10,000.0$2.92
Haycraft BenjaminCSO & GM EMEA2025-10-10Sale10,000.0$3.8
Haycraft BenjaminCSO & GM of EMEA Region2025-09-16Sale10,972.0$1.59
Crespo Jose LuisChief Revenue Officer2025-06-11Sale37,300.0$1.32
MIDDLETON PAUL BSee Remarks2025-06-09Purchase650,000.0$1.03
MIDDLETON PAUL BCFO & Executive VP2025-05-16Purchase350,000.0$0.72
MCNAMEE GEORGE CDirector2024-11-01Sale10,000.0$2.09
MCNAMEE GEORGE CDirector2024-08-01Sale10,000.0$2.37
MCNAMEE GEORGE CDirector2024-05-10Sale10,000.0$2.56
Crespo Jose LuisGM, MATL Handling, Key Accts2023-10-02Sale31,958.0$7.2
Shrestha Sanjay KChief Strategy Officer2021-07-13Sale5,700.0$28.43
Marsh AndrewPresident & CEO2021-01-19Sale5,178.0$68.31
Marsh AndrewPresident & CEO2021-01-19Sale101,766.0$67.73
Marsh AndrewPresident & CEO2021-01-19Sale132,753.0$66.58
Marsh AndrewPresident & CEO2021-01-19Sale114,120.0$65.66
Marsh AndrewPresident & CEO2021-01-19Sale156,051.0$64.82
Marsh AndrewPresident & CEO2021-01-19Sale49,918.0$63.97
Marsh AndrewPresident & CEO2021-01-19Sale13,482.0$62.65
MCNAMEE GEORGE CDirector2021-01-13Sale10,000.0$70.45
MCNAMEE GEORGE CDirector2021-01-12Sale10,000.0$62.4
Silver Jonathan MDirector2021-01-11Sale1,780.0$48.92
Conway Gerard L JRGen Counsel, Corp Sec, Sr VP2021-01-08Sale33,333.0$52.07
MCNAMEE GEORGE CDirector2021-01-08Sale10,000.0$52.07
Conway Gerard L JRGen Counsel, Corp Sec, Sr VP2021-01-07Sale33,333.0$43.68
MCNAMEE GEORGE CDirector2021-01-06Sale10,000.0$35.0
Schneider Lucas PDirector2021-01-04Sale312.0$33.88
Schneider Lucas PDirector2021-01-04Sale827.0$32.59
Schneider Lucas PDirector2021-01-04Sale2,361.0$31.85
Conway Gerard L JRGen Counsel, Corp Sec, Sr VP2021-01-04Sale5,600.0$34.59
Conway Gerard L JRGen Counsel, Corp Sec, Sr VP2021-01-04Sale6,100.0$33.62
Conway Gerard L JRGen Counsel, Corp Sec, Sr VP2021-01-04Sale35,095.0$32.71
Conway Gerard L JRGen Counsel, Corp Sec, Sr VP2021-01-04Sale61,538.0$31.94
Kenausis GregoryDirector2020-12-28Sale3,200.0$37.05
Kenausis GregoryDirector2020-12-28Sale5,246.0$36.16
Kenausis GregoryDirector2020-12-28Sale16,238.0$35.08
Kenausis GregoryDirector2020-12-28Sale30,316.0$33.91
MIDDLETON PAUL BCFO & Senior VP2020-12-24Sale216,667.0$35.13
Schmid KeithCOO & Sr. VP2020-12-17Sale200,000.0$30.0
HELMER MAUREEN ODirector2020-12-17Sale10,000.0$30.0
Schmid KeithCOO & Sr. VP2020-12-15Sale83,333.0$27.04
HELMER MAUREEN ODirector2020-12-14Sale300.0$27.14
HELMER MAUREEN ODirector2020-12-14Sale15,011.0$26.11
Schmid KeithCOO & Sr. VP2020-12-14Sale250,000.0$26.23
WILLIS GARY KDirector2020-12-11Sale14,300.0$27.46
WILLIS GARY KDirector2020-12-11Sale75,900.0$26.75
FiveT Capital Holding AGDirector2020-11-13Sale693,911.0$23.42
FiveT Capital Holding AGDirector2020-11-13Sale1,221,123.0$22.93
Roth Johannes MinhoDirector2020-11-13Sale693,911.0$23.42
Roth Johannes MinhoDirector2020-11-13Sale1,221,123.0$22.93
Schmid KeithCOO & Sr. VP2020-11-12Sale83,333.0$22.84
MCNAMEE GEORGE CDirector2020-11-09Sale30,000.0$21.05
Silver Jonathan MDirector2020-11-09Sale42,576.0$20.0
Silver Jonathan MDirector2020-10-14Sale76,286.0$17.39
MIDDLETON PAUL BCFO & Senior VP2020-10-12Sale697,066.0$18.49
Kenausis GregoryDirector2020-10-12Sale12,500.0$18.47
Kenausis GregoryDirector2020-10-12Sale47,500.0$17.71
MCNAMEE GEORGE CDirector2020-10-08Sale45,000.0$19.0
Schmid KeithCOO & Sr. VP2020-10-07Sale650,000.0$18.0
Schmid KeithCOO & Sr. VP2020-10-06Sale83,334.0$16.04
Hull Martin DanielCorporate Controller and CAO2020-10-05Sale68,565.0$14.87
Schmid KeithCOO & Sr. VP2020-10-05Sale83,333.0$15.0
HELMER MAUREEN ODirector2020-10-05Sale35,000.0$15.0
Schneider Lucas PDirector2020-10-01Sale3,500.0$13.83
Schmid KeithCOO & Sr. VP2020-10-01Sale83,333.0$14.0
Schmid KeithCOO & Sr. VP2020-09-21Sale200,000.0$13.0
HELMER MAUREEN ODirector2020-09-18Sale75,000.0$13.28
Conway Gerard L JRGen Counsel, Corp Sec, Sr VP2020-09-08Sale35,352.0$11.9
Marsh AndrewPresident & CEO2020-08-31Sale104,412.0$12.98
Hull Martin DanielCorporate Controller and CAO2020-08-31Sale33,333.0$13.11
Marsh AndrewPresident & CEO2020-08-28Sale166,666.0$12.95
Conway Gerard L JRGen. Counsel, Corp Sec, Sr. VP2020-08-28Sale66,667.0$12.96
Conway Gerard L JRGen. Counsel, Corp Sec, Sr. VP2020-08-27Sale35,353.0$13.01
Marsh AndrewPresident & CEO2020-08-19Sale36,376.0$14.12
Marsh AndrewPresident & CEO2020-08-19Sale180,290.0$13.69
MIDDLETON PAUL BCFO & Senior VP2020-08-10Sale550,000.0$12.0
Shrestha Sanjay KChief Strategy Officer2020-08-06Sale20,000.0$10.15
MCNAMEE GEORGE CDirector2020-08-06Sale65,000.0$10.3
MCNAMEE GEORGE CDirector2020-07-13Sale100.0$9.47
MCNAMEE GEORGE CDirector2020-07-13Sale1,400.0$8.79
Shrestha Sanjay KChief Strategy Officer2020-07-09Sale64,825.0$8.82
MIDDLETON PAUL BCFO & Senior VP2020-07-06Sale250,000.0$10.0
Hull Martin DanielCorporate Controller and CAO2020-07-06Sale66,667.0$10.0
Marsh AndrewPresident and CEO2020-07-06Sale1,166,667.0$10.01
Schneider Lucas PDirector2020-07-01Sale3,500.0$8.96
Conway Gerard L JRGen. Counsel, Corp Sec, Sr VP2020-06-29Sale291,000.0$7.94
Marsh AndrewPresident & CEO2020-06-24Sale961,059.0$7.3
Schmid KeithCOO & Sr. VP2020-06-24Sale30,621.0$7.25
Marsh AndrewPresident & CEO2020-06-23Sale255,607.0$7.0
HELMER MAUREEN ODirector2020-06-23Sale150,164.0$6.29
Schmid KeithCOO & Sr. VP2020-06-23Sale169,379.0$7.0
Marsh AndrewPresident and CEO2020-06-08Sale657,002.0$5.03
Marsh AndrewPresident and CEO2020-06-05Sale358,378.0$5.03
Conway Gerard L JRGen. Counsel, Corp. Sec.,Sr VP2020-06-04Sale35,776.0$5.0
Marsh AndrewPresident and CEO2020-06-04Sale103,931.0$5.0
FiveT Capital Holding AGDirector2020-04-23Sale552,529.0$4.35
Roth Johannes MinhoDirector2020-04-23Sale552,529.0$4.35