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Plug Power Inc(PLUG US)

$1.38+0.000.00%Ext:$1.36-0.021.42%(Market Closed · 00:00:00 UTC)

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PLUG US​

SEC Filings by Owner

Insider Ownership

MCNAMEE GEORGE C(126)

  • 4OWNERSHIP DOCUMENT16 Jun
  • 4OWNERSHIP DOCUMENT6 Jan
  • 4OWNERSHIP DOCUMENT3 Oct 2025
  • 4OWNERSHIP DOCUMENT24 Jul 2025
  • 4OWNERSHIP DOCUMENT3 Jul 2025
  • 4OWNERSHIP DOCUMENT3 Apr 2025
  • 4OWNERSHIP DOCUMENT6 Jan 2025
  • 4OWNERSHIP DOCUMENT5 Nov 2024
  • 4OWNERSHIP DOCUMENT3 Oct 2024
  • 4OWNERSHIP DOCUMENT2 Aug 2024

HELMER MAUREEN O(111)

  • 4OWNERSHIP DOCUMENT16 Jun
  • 4OWNERSHIP DOCUMENT10 Jun
  • 4OWNERSHIP DOCUMENT6 Jan
  • 4OWNERSHIP DOCUMENT3 Oct 2025
  • 4OWNERSHIP DOCUMENT24 Jul 2025
  • 4OWNERSHIP DOCUMENT3 Jul 2025
  • 4OWNERSHIP DOCUMENT3 Apr 2025
  • 4OWNERSHIP DOCUMENT6 Jan 2025
  • 4OWNERSHIP DOCUMENT3 Oct 2024
  • 4OWNERSHIP DOCUMENT3 Jul 2024

WILLIS GARY K(103)

  • 4OWNERSHIP DOCUMENT16 Jun
  • 4OWNERSHIP DOCUMENT6 Jan
  • 4OWNERSHIP DOCUMENT3 Oct 2025
  • 4OWNERSHIP DOCUMENT24 Jul 2025
  • 4OWNERSHIP DOCUMENT3 Jul 2025
  • 4OWNERSHIP DOCUMENT3 Apr 2025
  • 4OWNERSHIP DOCUMENT6 Jan 2025
  • 4OWNERSHIP DOCUMENT3 Oct 2024
  • 4OWNERSHIP DOCUMENT3 Jul 2024
  • 4OWNERSHIP DOCUMENT7 Jun 2024

Kenausis Gregory(67)

  • 4OWNERSHIP DOCUMENT2 Oct
  • 4OWNERSHIP DOCUMENT6 Jul
  • 4OWNERSHIP DOCUMENT16 Jun
  • 4OWNERSHIP DOCUMENT10 Apr
  • 4OWNERSHIP DOCUMENT6 Jan
  • 4OWNERSHIP DOCUMENT3 Oct 2025
  • 4OWNERSHIP DOCUMENT24 Jul 2025
  • 4OWNERSHIP DOCUMENT3 Jul 2025
  • 4OWNERSHIP DOCUMENT3 Apr 2025
  • 4OWNERSHIP DOCUMENT6 Jan 2025

MECHANICAL TECHNOLOGY INC(62)

  • 4PRIMARY DOCUMENT19 Aug 2003
  • 4PRIMARY DOCUMENT18 Aug 2003
  • 4PRIMARY DOCUMENT11 Aug 2003
  • 4PRIMARY DOCUMENT4 Aug 2003
  • 4PRIMARY DOCUMENT28 Jul 2003
  • 4PRIMARY DOCUMENT21 Jul 2003
  • 4PRIMARY DOCUMENT14 Jul 2003
  • 4PRIMARY DOCUMENT7 Jul 2003
  • 4PRIMARY DOCUMENT30 Jun 2003
  • 4PRIMARY DOCUMENT23 Jun 2003

GARBERDING LARRY(56)

  • 4Statement of changes in beneficial ownership5 Apr 2017
  • 4Statement of changes in beneficial ownership5 Jan 2017
  • 4Statement of changes in beneficial ownership18 Oct 2016
  • 4Statement of changes in beneficial ownership5 Jul 2016
  • 4Statement of changes in beneficial ownership20 May 2016
  • 4Statement of changes in beneficial ownership5 Apr 2016
  • 4Statement of changes in beneficial ownership15 Jan 2016
  • 4Statement of changes in beneficial ownership28 Oct 2015
  • 4Statement of changes in beneficial ownership17 Jul 2015
  • 4Statement of changes in beneficial ownership6 Apr 2015

Conway Gerard L JR(54)

  • 4OWNERSHIP DOCUMENT29 Jun
  • 4OWNERSHIP DOCUMENT8 Sep 2025
  • 4OWNERSHIP DOCUMENT7 May 2025
  • 4OWNERSHIP DOCUMENT8 Nov 2024
  • 4OWNERSHIP DOCUMENT9 Aug 2024
  • 4OWNERSHIP DOCUMENT13 May 2024
  • 4OWNERSHIP DOCUMENT30 Apr 2024
  • 4OWNERSHIP DOCUMENT3 Oct 2023
  • 4OWNERSHIP DOCUMENT31 May 2023
  • 4OWNERSHIP DOCUMENT2 Dec 2022

Marsh Andrew(53)

  • 4OWNERSHIP DOCUMENT2 Oct
  • 4OWNERSHIP DOCUMENT2 Jul
  • 4OWNERSHIP DOCUMENT10 Apr
  • 4OWNERSHIP DOCUMENT16 Jun
  • 4OWNERSHIP DOCUMENT3 Dec 2025
  • 4OWNERSHIP DOCUMENT4 Nov 2025
  • 4OWNERSHIP DOCUMENT7 Oct 2025
  • 4OWNERSHIP DOCUMENT8 Sep 2025
  • 4OWNERSHIP DOCUMENT12 Sep 2025
  • 4OWNERSHIP DOCUMENT17 Jul 2025

Roth Johannes Minho(46)

  • 4OWNERSHIP DOCUMENT15 Jul 2022
  • 4OWNERSHIP DOCUMENT5 Apr 2022
  • 4OWNERSHIP DOCUMENT5 Jan 2022
  • 4OWNERSHIP DOCUMENT5 Oct 2021
  • 4OWNERSHIP DOCUMENT19 Aug 2021
  • 4OWNERSHIP DOCUMENT21 Jul 2021
  • 4OWNERSHIP DOCUMENT6 Jan 2021
  • 4Statement of changes in beneficial ownership17 Nov 2020
  • 4Statement of changes in beneficial ownership17 Nov 2020
  • 4Statement of changes in beneficial ownership5 Oct 2020

HICKEY DOUGLAS T(41)

  • 4Statement of changes in beneficial ownership5 Jul 2018
  • 4Statement of changes in beneficial ownership18 May 2018
  • 4Statement of changes in beneficial ownership4 Apr 2018
  • 4Statement of changes in beneficial ownership4 Jan 2018
  • 4Statement of changes in beneficial ownership10 Oct 2017
  • 4Statement of changes in beneficial ownership5 Sep 2017
  • 4Statement of changes in beneficial ownership30 Jun 2017
  • 4/AStatement of changes in beneficial ownership (amendment)5 Sep 2017
  • 4Statement of changes in beneficial ownership5 Apr 2017
  • 4Statement of changes in beneficial ownership5 Jan 2017

MIDDLETON PAUL B(34)

  • 4OWNERSHIP DOCUMENT29 Jun
  • 4OWNERSHIP DOCUMENT9 Jun 2025
  • 4OWNERSHIP DOCUMENT19 May 2025
  • 4OWNERSHIP DOCUMENT7 May 2025
  • 4OWNERSHIP DOCUMENT25 Nov 2024
  • 4OWNERSHIP DOCUMENT8 Nov 2024
  • 4OWNERSHIP DOCUMENT13 May 2024
  • 4OWNERSHIP DOCUMENT9 Aug 2024
  • 4OWNERSHIP DOCUMENT30 Apr 2024
  • 4OWNERSHIP DOCUMENT3 Oct 2023

Schneider Lucas P(32)

  • 4OWNERSHIP DOCUMENT5 Apr 2023
  • 4OWNERSHIP DOCUMENT5 Jan 2023
  • 4OWNERSHIP DOCUMENT5 Oct 2022
  • 4OWNERSHIP DOCUMENT15 Jul 2022
  • 4OWNERSHIP DOCUMENT26 Jul 2022
  • 4OWNERSHIP DOCUMENT5 Apr 2022
  • 4OWNERSHIP DOCUMENT5 Jan 2022
  • 4OWNERSHIP DOCUMENT5 Oct 2021
  • 4OWNERSHIP DOCUMENT19 Aug 2021
  • 4OWNERSHIP DOCUMENT21 Jul 2021

Air Liquide Investissements D'Avenir Et De Demonstration(30)

  • 4Statement of changes in beneficial ownership27 Sep 2017
  • 4Statement of changes in beneficial ownership27 Jun 2017
  • 4Statement of changes in beneficial ownership18 Sep 2017
  • 4OWNERSHIP DOCUMENT30 Jan 2017
  • 4Statement of changes in beneficial ownership30 Dec 2016
  • 4Statement of changes in beneficial ownership7 Oct 2016
  • 4Statement of changes in beneficial ownership20 Jun 2016
  • 4Statement of changes in beneficial ownership17 Jun 2016
  • 4Statement of changes in beneficial ownership23 Mar 2016
  • 4Statement of changes in beneficial ownership16 Mar 2016

Schmid Keith(30)

  • 4OWNERSHIP DOCUMENT3 Oct 2023
  • 4OWNERSHIP DOCUMENT21 Sep 2023
  • 4OWNERSHIP DOCUMENT31 May 2023
  • 4/AOWNERSHIP DOCUMENT30 May 2023
  • 4OWNERSHIP DOCUMENT2 May 2022
  • 4OWNERSHIP DOCUMENT9 Nov 2021
  • 4OWNERSHIP DOCUMENT31 Aug 2021
  • 4OWNERSHIP DOCUMENT23 Aug 2021
  • 4OWNERSHIP DOCUMENT21 Dec 2020
  • 4OWNERSHIP DOCUMENT16 Dec 2020

Hull Martin Daniel(30)

  • 4OWNERSHIP DOCUMENT7 May 2025
  • 4OWNERSHIP DOCUMENT21 Oct 2024
  • 4OWNERSHIP DOCUMENT3 Oct 2024
  • 4OWNERSHIP DOCUMENT2 Aug 2024
  • 4OWNERSHIP DOCUMENT30 Apr 2024
  • 4OWNERSHIP DOCUMENT27 Nov 2023
  • 4OWNERSHIP DOCUMENT3 Oct 2023
  • 4OWNERSHIP DOCUMENT2 Aug 2023
  • 4OWNERSHIP DOCUMENT13 Apr 2023
  • 4OWNERSHIP DOCUMENT19 Oct 2022

Silver Jonathan M(29)

  • 4OWNERSHIP DOCUMENT6 Jul 2023
  • 4OWNERSHIP DOCUMENT29 Jun 2023
  • 4OWNERSHIP DOCUMENT5 Apr 2023
  • 4OWNERSHIP DOCUMENT5 Jan 2023
  • 4OWNERSHIP DOCUMENT5 Oct 2022
  • 4OWNERSHIP DOCUMENT15 Jul 2022
  • 4OWNERSHIP DOCUMENT26 Jul 2022
  • 4OWNERSHIP DOCUMENT5 Apr 2022
  • 4OWNERSHIP DOCUMENT5 Jan 2022
  • 4OWNERSHIP DOCUMENT5 Oct 2021

Mahtani Kavita(22)

  • 4OWNERSHIP DOCUMENT10 Apr
  • 4OWNERSHIP DOCUMENT6 Jan
  • 4OWNERSHIP DOCUMENT3 Oct 2025
  • 4OWNERSHIP DOCUMENT24 Jul 2025
  • 4OWNERSHIP DOCUMENT3 Jul 2025
  • 4OWNERSHIP DOCUMENT3 Apr 2025
  • 4OWNERSHIP DOCUMENT6 Jan 2025
  • 4OWNERSHIP DOCUMENT3 Oct 2024
  • 4OWNERSHIP DOCUMENT3 Jul 2024
  • 4OWNERSHIP DOCUMENT7 Jun 2024

BONNEY MARK J(18)

  • 4OWNERSHIP DOCUMENT2 Oct
  • 4OWNERSHIP DOCUMENT6 Jul
  • 4OWNERSHIP DOCUMENT16 Jun
  • 4OWNERSHIP DOCUMENT10 Apr
  • 4OWNERSHIP DOCUMENT6 Jan
  • 4OWNERSHIP DOCUMENT3 Oct 2025
  • 4OWNERSHIP DOCUMENT24 Jul 2025
  • 4OWNERSHIP DOCUMENT3 Jul 2025
  • 4OWNERSHIP DOCUMENT3 Apr 2025
  • 4OWNERSHIP DOCUMENT6 Jan 2025

SPERRY MARK A(18)

  • 4PRIMARY DOCUMENT8 Mar 2010
  • 4/APRIMARY DOCUMENT26 Mar 2010
  • 4PRIMARY DOCUMENT19 Feb 2010
  • 4PRIMARY DOCUMENT22 May 2009
  • 4PRIMARY DOCUMENT7 Apr 2009
  • 4PRIMARY DOCUMENT11 Mar 2009
  • 5PRIMARY DOCUMENT17 Feb 2009
  • 4PRIMARY DOCUMENT5 Jan 2009
  • 4Statement of changes in beneficial ownership7 Feb 2008
  • 4Statement of changes in beneficial ownership22 May 2008

Joggerst Patrick(18)

  • 4OWNERSHIP DOCUMENT2 Oct
  • 4OWNERSHIP DOCUMENT6 Jul
  • 4OWNERSHIP DOCUMENT16 Jun
  • 4OWNERSHIP DOCUMENT10 Apr
  • 4OWNERSHIP DOCUMENT6 Jan
  • 4OWNERSHIP DOCUMENT3 Oct 2025
  • 4OWNERSHIP DOCUMENT24 Jul 2025
  • 4OWNERSHIP DOCUMENT3 Jul 2025
  • 4OWNERSHIP DOCUMENT3 Apr 2025
  • 4OWNERSHIP DOCUMENT6 Jan 2025

GRANT J DOUGLAS(17)

  • 4PRIMARY DOCUMENT7 Jan 2009
  • 4PRIMARY DOCUMENT6 Oct 2008
  • 4PRIMARY DOCUMENT3 Jul 2008
  • 4Statement of changes in beneficial ownership22 May 2008
  • 4Statement of changes in beneficial ownership7 Apr 2008
  • 4Statement of changes in beneficial ownership7 Jan 2008
  • 4Statement of changes in beneficial ownership5 Oct 2007
  • 4Statement of changes in beneficial ownership5 Jul 2007
  • 4Statement of changes in beneficial ownership3 Oct 2007
  • 4Statement of changes in beneficial ownership16 Apr 2007

Batekhin Sergey(15)

  • 4PRIMARY DOCUMENT6 Oct 2008
  • 4PRIMARY DOCUMENT3 Jul 2008
  • 4Statement of changes in beneficial ownership22 May 2008
  • 4Statement of changes in beneficial ownership7 Apr 2008
  • 4Statement of changes in beneficial ownership7 Jan 2008
  • 4Statement of changes in beneficial ownership5 Oct 2007
  • 4Statement of changes in beneficial ownership5 Jul 2007
  • 4Statement of changes in beneficial ownership3 Oct 2007
  • 4Statement of changes in beneficial ownership26 Apr 2007
  • 4/AStatement of changes in beneficial ownership (amendment)5 Feb 2007

Gross Joel D(15)

  • 4PRIMARY DOCUMENT3 Apr 2009
  • 4PRIMARY DOCUMENT7 Jan 2009
  • 4PRIMARY DOCUMENT6 Oct 2008
  • 4PRIMARY DOCUMENT3 Jul 2008
  • 4Statement of changes in beneficial ownership22 May 2008
  • 4Statement of changes in beneficial ownership7 Apr 2008
  • 4Statement of changes in beneficial ownership7 Jan 2008
  • 4Statement of changes in beneficial ownership5 Oct 2007
  • 4Statement of changes in beneficial ownership5 Jul 2007
  • 4Statement of changes in beneficial ownership3 Oct 2007

Pontone Xavier(15)

  • 4Statement of changes in beneficial ownership5 Apr 2017
  • 4Statement of changes in beneficial ownership5 Jan 2017
  • 4Statement of changes in beneficial ownership17 Oct 2016
  • 4Statement of changes in beneficial ownership5 Jul 2016
  • 4Statement of changes in beneficial ownership5 Apr 2016
  • 4Statement of changes in beneficial ownership15 Jan 2016
  • 5Annual statement of beneficial ownership16 Feb 2016
  • 4Statement of changes in beneficial ownership28 Oct 2015
  • 4Statement of changes in beneficial ownership13 Feb 2015
  • 5Annual statement of beneficial ownership13 Feb 2015

GRAVES GREGORY B(14)

  • 4Statement of changes in beneficial ownership1 Jul 2019
  • 4Statement of changes in beneficial ownership3 Apr 2019
  • 4Statement of changes in beneficial ownership4 Jan 2019
  • 4Statement of changes in beneficial ownership3 Oct 2018
  • 4Statement of changes in beneficial ownership14 Sep 2018
  • 4Statement of changes in beneficial ownership5 Jul 2018
  • 4Statement of changes in beneficial ownership18 May 2018
  • 4Statement of changes in beneficial ownership4 Apr 2018
  • 4Statement of changes in beneficial ownership4 Jan 2018
  • 4Statement of changes in beneficial ownership10 Oct 2017

PROKHOROV MIKHAIL D(14)

  • 4MAIN DOCUMENT DESCRIPTION25 Apr 2008
  • 4MAIN DOCUMENT DESCRIPTION11 Feb 2008
  • 4MAIN DOCUMENT DESCRIPTION11 Feb 2008
  • 4/AMAIN DOCUMENT DESCRIPTION8 Feb 2008
  • 4MAIN DOCUMENT DESCRIPTION8 Feb 2008
  • 4MAIN DOCUMENT DESCRIPTION8 Feb 2008
  • 4MAIN DOCUMENT DESCRIPTION7 Feb 2008
  • 4MAIN DOCUMENT DESCRIPTION6 Feb 2008
  • 4MAIN DOCUMENT DESCRIPTION4 Feb 2008
  • 4MAIN DOCUMENT DESCRIPTION11 Oct 2007

POTANIN VLADIMIR O(14)

  • 4Statement of changes in beneficial ownership17 Apr 2009
  • 4MAIN DOCUMENT DESCRIPTION11 Feb 2008
  • 4MAIN DOCUMENT DESCRIPTION11 Feb 2008
  • 4/AMAIN DOCUMENT DESCRIPTION8 Feb 2008
  • 4MAIN DOCUMENT DESCRIPTION8 Feb 2008
  • 4MAIN DOCUMENT DESCRIPTION8 Feb 2008
  • 4MAIN DOCUMENT DESCRIPTION7 Feb 2008
  • 4MAIN DOCUMENT DESCRIPTION6 Feb 2008
  • 4MAIN DOCUMENT DESCRIPTION4 Feb 2008
  • 4MAIN DOCUMENT DESCRIPTION11 Oct 2007

Woicke Peter(14)

  • 4PRIMARY DOCUMENT7 Jan 2009
  • 4PRIMARY DOCUMENT6 Oct 2008
  • 4PRIMARY DOCUMENT3 Jul 2008
  • 4Statement of changes in beneficial ownership22 May 2008
  • 4Statement of changes in beneficial ownership7 Apr 2008
  • 4Statement of changes in beneficial ownership7 Jan 2008
  • 4Statement of changes in beneficial ownership5 Oct 2007
  • 4Statement of changes in beneficial ownership5 Jul 2007
  • 4Statement of changes in beneficial ownership3 Oct 2007
  • 4Statement of changes in beneficial ownership16 Apr 2007

Branton LTD(14)

  • 4Statement of changes in beneficial ownership23 Dec 2008
  • 4MAIN DOCUMENT DESCRIPTION11 Feb 2008
  • 4MAIN DOCUMENT DESCRIPTION11 Feb 2008
  • 4/AMAIN DOCUMENT DESCRIPTION8 Feb 2008
  • 4MAIN DOCUMENT DESCRIPTION8 Feb 2008
  • 4MAIN DOCUMENT DESCRIPTION8 Feb 2008
  • 4MAIN DOCUMENT DESCRIPTION7 Feb 2008
  • 4MAIN DOCUMENT DESCRIPTION6 Feb 2008
  • 4MAIN DOCUMENT DESCRIPTION4 Feb 2008
  • 4MAIN DOCUMENT DESCRIPTION11 Oct 2007

SMART HYDROGEN, INC.(14)

  • 4Statement of changes in beneficial ownership23 Dec 2008
  • 4MAIN DOCUMENT DESCRIPTION11 Feb 2008
  • 4MAIN DOCUMENT DESCRIPTION11 Feb 2008
  • 4/AMAIN DOCUMENT DESCRIPTION8 Feb 2008
  • 4MAIN DOCUMENT DESCRIPTION8 Feb 2008
  • 4MAIN DOCUMENT DESCRIPTION8 Feb 2008
  • 4MAIN DOCUMENT DESCRIPTION7 Feb 2008
  • 4MAIN DOCUMENT DESCRIPTION6 Feb 2008
  • 4MAIN DOCUMENT DESCRIPTION4 Feb 2008
  • 4MAIN DOCUMENT DESCRIPTION11 Oct 2007

Clayburn Development Inc.(14)

  • 4Statement of changes in beneficial ownership23 Dec 2008
  • 4MAIN DOCUMENT DESCRIPTION11 Feb 2008
  • 4MAIN DOCUMENT DESCRIPTION11 Feb 2008
  • 4/AMAIN DOCUMENT DESCRIPTION8 Feb 2008
  • 4MAIN DOCUMENT DESCRIPTION8 Feb 2008
  • 4MAIN DOCUMENT DESCRIPTION8 Feb 2008
  • 4MAIN DOCUMENT DESCRIPTION7 Feb 2008
  • 4MAIN DOCUMENT DESCRIPTION6 Feb 2008
  • 4MAIN DOCUMENT DESCRIPTION4 Feb 2008
  • 4MAIN DOCUMENT DESCRIPTION11 Oct 2007

DRAZAN JEFFREY M(13)

  • 4PRIMARY DOCUMENT10 Jan 2011
  • 4PRIMARY DOCUMENT6 Oct 2010
  • 4PRIMARY DOCUMENT20 Jul 2010
  • 4PRIMARY DOCUMENT21 May 2010
  • 4PRIMARY DOCUMENT7 Apr 2010
  • 4PRIMARY DOCUMENT7 Jan 2010
  • 4PRIMARY DOCUMENT5 Oct 2009
  • 4PRIMARY DOCUMENT7 Jul 2009
  • 4PRIMARY DOCUMENT22 May 2009
  • 4PRIMARY DOCUMENT3 Apr 2009

MMC NORLISK NICKEL(13)

  • 4Statement of changes in beneficial ownership10 May 2011
  • 4MAIN DOCUMENT DESCRIPTION11 Feb 2008
  • 4MAIN DOCUMENT DESCRIPTION11 Feb 2008
  • 4/AMAIN DOCUMENT DESCRIPTION8 Feb 2008
  • 4MAIN DOCUMENT DESCRIPTION8 Feb 2008
  • 4MAIN DOCUMENT DESCRIPTION8 Feb 2008
  • 4MAIN DOCUMENT DESCRIPTION7 Feb 2008
  • 4MAIN DOCUMENT DESCRIPTION6 Feb 2008
  • 4MAIN DOCUMENT DESCRIPTION4 Feb 2008
  • 4MAIN DOCUMENT DESCRIPTION11 Oct 2007

Angle Colin M(13)

  • 4OWNERSHIP DOCUMENT2 Oct
  • 4OWNERSHIP DOCUMENT6 Jul
  • 4OWNERSHIP DOCUMENT16 Jun
  • 4OWNERSHIP DOCUMENT10 Apr
  • 4OWNERSHIP DOCUMENT6 Jan
  • 4OWNERSHIP DOCUMENT3 Oct 2025
  • 4OWNERSHIP DOCUMENT24 Jul 2025
  • 4OWNERSHIP DOCUMENT3 Jul 2025
  • 4OWNERSHIP DOCUMENT3 Apr 2025
  • 4OWNERSHIP DOCUMENT6 Jan 2025

Polikarpov Sergey(13)

  • 4PRIMARY DOCUMENT3 Jul 2008
  • 4Statement of changes in beneficial ownership7 Apr 2008
  • 4Statement of changes in beneficial ownership7 Jan 2008
  • 4Statement of changes in beneficial ownership5 Oct 2007
  • 4Statement of changes in beneficial ownership5 Jul 2007
  • 4Statement of changes in beneficial ownership3 Oct 2007
  • 4Statement of changes in beneficial ownership26 Apr 2007
  • 4/AStatement of changes in beneficial ownership (amendment)5 Feb 2007
  • 4Statement of changes in beneficial ownership11 Jan 2007
  • 4Statement of changes in beneficial ownership4 Oct 2006

Rosenblum Lisa(13)

  • 4PRIMARY DOCUMENT6 Oct 2008
  • 4PRIMARY DOCUMENT3 Jul 2008
  • 4Statement of changes in beneficial ownership22 May 2008
  • 4Statement of changes in beneficial ownership7 Apr 2008
  • 4Statement of changes in beneficial ownership7 Jan 2008
  • 4Statement of changes in beneficial ownership5 Oct 2007
  • 4Statement of changes in beneficial ownership5 Jul 2007
  • 4Statement of changes in beneficial ownership3 Oct 2007
  • 4Statement of changes in beneficial ownership16 Apr 2007
  • 4Statement of changes in beneficial ownership11 Jan 2007

Shrestha Sanjay K(13)

  • 4OWNERSHIP DOCUMENT30 Apr 2024
  • 4OWNERSHIP DOCUMENT3 Oct 2023
  • 4OWNERSHIP DOCUMENT31 May 2023
  • 4OWNERSHIP DOCUMENT2 Dec 2022
  • 4OWNERSHIP DOCUMENT2 May 2022
  • 4OWNERSHIP DOCUMENT9 Nov 2021
  • 4OWNERSHIP DOCUMENT22 Jul 2021
  • 4Statement of changes in beneficial ownership30 Sep 2020
  • 4Statement of changes in beneficial ownership10 Aug 2020
  • 4Statement of changes in beneficial ownership13 Jul 2020

Crespo Jose Luis(13)

  • 4OWNERSHIP DOCUMENT29 Jun
  • 4OWNERSHIP DOCUMENT17 Dec 2025
  • 4OWNERSHIP DOCUMENT8 Sep 2025
  • 4OWNERSHIP DOCUMENT13 Jun 2025
  • 4OWNERSHIP DOCUMENT7 May 2025
  • 4OWNERSHIP DOCUMENT8 Nov 2024
  • 4OWNERSHIP DOCUMENT9 Aug 2024
  • 4OWNERSHIP DOCUMENT13 May 2024
  • 4OWNERSHIP DOCUMENT30 Apr 2024
  • 4OWNERSHIP DOCUMENT4 Oct 2023

Haycraft Benjamin(10)

  • 4OWNERSHIP DOCUMENT19 Oct
  • 4OWNERSHIP DOCUMENT22 Sep
  • 4OWNERSHIP DOCUMENT15 Sep
  • 4OWNERSHIP DOCUMENT6 Jul
  • 4OWNERSHIP DOCUMENT14 Jan
  • 4OWNERSHIP DOCUMENT12 Nov 2025
  • 4OWNERSHIP DOCUMENT12 Dec 2025
  • 4OWNERSHIP DOCUMENT18 Sep 2025
  • 4OWNERSHIP DOCUMENT12 Sep 2025
  • 3OWNERSHIP DOCUMENT12 Sep 2025

BUA JEAN A(9)

  • 4OWNERSHIP DOCUMENT6 Jul 2023
  • 4OWNERSHIP DOCUMENT29 Jun 2023
  • 4OWNERSHIP DOCUMENT5 Apr 2023
  • 4OWNERSHIP DOCUMENT5 Jan 2023
  • 4OWNERSHIP DOCUMENT5 Oct 2022
  • 4OWNERSHIP DOCUMENT15 Jul 2022
  • 4OWNERSHIP DOCUMENT26 Jul 2022
  • 4OWNERSHIP DOCUMENT18 Apr 2022
  • 3OWNERSHIP DOCUMENT18 Apr 2022

Anderson Gerald A(9)

  • 4PRIMARY DOCUMENT16 Dec 2011
  • 4PRIMARY DOCUMENT20 Apr 2011
  • 4/APRIMARY DOCUMENT26 Mar 2010
  • 4PRIMARY DOCUMENT19 Feb 2010
  • 4PRIMARY DOCUMENT22 May 2009
  • 4PRIMARY DOCUMENT11 Mar 2009
  • 4Statement of changes in beneficial ownership22 May 2008
  • 4Statement of changes in beneficial ownership11 Jul 2007
  • 3Initial statement of beneficial ownership11 Jul 2007

Miroshnichenko Evgeny(9)

  • 4PRIMARY DOCUMENT2 Jul 2014
  • 4PRIMARY DOCUMENT4 Apr 2014
  • 4PRIMARY DOCUMENT21 Jan 2014
  • 4PRIMARY DOCUMENT7 Oct 2013
  • 4PRIMARY DOCUMENT5 Jul 2013
  • 4PRIMARY DOCUMENT3 Apr 2013
  • 4PRIMARY DOCUMENT3 Apr 2013
  • 3/APRIMARY DOCUMENT26 Oct 2011
  • 3PRIMARY DOCUMENT26 Oct 2011

SILVESTRI GREGORY A(8)

  • 4Statement of changes in beneficial ownership6 Mar 2007
  • 4Statement of changes in beneficial ownership26 Jul 2006
  • 4Statement of changes in beneficial ownership10 Feb 2006
  • 4Statement of changes in beneficial ownership23 Sep 2005
  • 4Statement of changes in beneficial ownership10 Mar 2005
  • 4Statement of changes in beneficial ownership31 Jan 2005
  • 4Statement of changes in beneficial ownership19 Aug 2004
  • 4Statement of changes in beneficial ownership12 Feb 2004

Hansen Erik J(8)

  • 4PRIMARY DOCUMENT29 Jul 2014
  • 4PRIMARY DOCUMENT30 Jul 2013
  • 4PRIMARY DOCUMENT16 Dec 2011
  • 4PRIMARY DOCUMENT20 Apr 2011
  • 4PRIMARY DOCUMENT26 Mar 2010
  • 4PRIMARY DOCUMENT19 Feb 2010
  • 4/APRIMARY DOCUMENT26 Mar 2010
  • 3PRIMARY DOCUMENT3 Nov 2009

Harriman Kim(8)

  • 4OWNERSHIP DOCUMENT15 Jul 2022
  • 4OWNERSHIP DOCUMENT5 Apr 2022
  • 4OWNERSHIP DOCUMENT5 Jan 2022
  • 4OWNERSHIP DOCUMENT5 Oct 2021
  • 4OWNERSHIP DOCUMENT19 Aug 2021
  • 4OWNERSHIP DOCUMENT21 Jul 2021
  • 4OWNERSHIP DOCUMENT24 Feb 2021
  • 3OWNERSHIP DOCUMENT24 Feb 2021

SAILLANT ROGER B(7)

  • 4Statement of changes in beneficial ownership16 May 2005
  • 4Statement of changes in beneficial ownership4 Jan 2005
  • 4Statement of changes in beneficial ownership19 Aug 2004
  • 4Statement of changes in beneficial ownership17 May 2004
  • 4Statement of changes in beneficial ownership5 Apr 2004
  • 4Statement of changes in beneficial ownership4 Dec 2003
  • 4Statement of changes in beneficial ownership20 Aug 2003

McGuire Michael E Jr(7)

  • 4PRIMARY DOCUMENT3 Apr 2009
  • 4PRIMARY DOCUMENT7 Jan 2009
  • 4PRIMARY DOCUMENT6 Oct 2008
  • 4PRIMARY DOCUMENT3 Jul 2008
  • 4Statement of changes in beneficial ownership22 May 2008
  • 4Statement of changes in beneficial ownership19 May 2008
  • 3Initial statement of beneficial ownership19 May 2008

SHALIKASHVILI JOHN M(6)

  • 4Statement of changes in beneficial ownership30 Jun 2006
  • 4Statement of changes in beneficial ownership3 Jun 2005
  • 4Statement of changes in beneficial ownership25 Aug 2004
  • 4Statement of changes in beneficial ownership24 May 2004
  • 4Statement of changes in beneficial ownership23 Dec 2003
  • 4Statement of changes in beneficial ownership3 Sep 2003

FiveT Capital Holding AG(6)

  • 4Statement of changes in beneficial ownership17 Nov 2020
  • 4Statement of changes in beneficial ownership17 Nov 2020
  • 4Statement of changes in beneficial ownership22 Apr 2020
  • 4Statement of changes in beneficial ownership16 Apr 2020
  • 4Statement of changes in beneficial ownership7 Jul 2017
  • 3Initial statement of beneficial ownership6 Feb 2017

ELTER JOHN F(5)

  • 4Statement of changes in beneficial ownership6 Mar 2007
  • 4Statement of changes in beneficial ownership10 Feb 2006
  • 4Statement of changes in beneficial ownership23 Sep 2005
  • 4Statement of changes in beneficial ownership31 Jan 2005
  • 4Statement of changes in beneficial ownership12 Feb 2004

Millington Joseph M(5)

  • 4Statement of changes in beneficial ownership12 Feb 2008
  • 4Statement of changes in beneficial ownership22 May 2008
  • 5Annual statement of beneficial ownership12 Feb 2008
  • 3Initial statement of beneficial ownership1 Aug 2006
  • 4Statement of changes in beneficial ownership1 Aug 2006

Reid Chris(5)

  • 4PRIMARY DOCUMENT22 May 2009
  • 5PRIMARY DOCUMENT12 Feb 2009
  • 4Statement of changes in beneficial ownership22 May 2008
  • 3Initial statement of beneficial ownership5 Jul 2007
  • 4Statement of changes in beneficial ownership5 Jul 2007

Pivnyuk Dennis V(5)

  • 4PRIMARY DOCUMENT3 Apr 2009
  • 4PRIMARY DOCUMENT7 Jan 2009
  • 4PRIMARY DOCUMENT6 Oct 2008
  • 4PRIMARY DOCUMENT1 Aug 2008
  • 3PRIMARY DOCUMENT1 Aug 2008

Dimitri Andrew(5)

  • 4PRIMARY DOCUMENT3 Apr 2009
  • 4PRIMARY DOCUMENT7 Jan 2009
  • 4PRIMARY DOCUMENT6 Oct 2008
  • 4PRIMARY DOCUMENT1 Aug 2008
  • 3PRIMARY DOCUMENT1 Aug 2008

Corless Adrian J(5)

  • 4PRIMARY DOCUMENT30 Jul 2013
  • 4PRIMARY DOCUMENT16 Dec 2011
  • 4PRIMARY DOCUMENT20 Apr 2011
  • 4PRIMARY DOCUMENT26 Mar 2010
  • 3PRIMARY DOCUMENT25 Feb 2010

Rasskazov Evgeny(5)

  • 4PRIMARY DOCUMENT5 Jul 2013
  • 4PRIMARY DOCUMENT3 Apr 2013
  • 4PRIMARY DOCUMENT3 Apr 2013
  • 3/APRIMARY DOCUMENT26 Oct 2011
  • 3PRIMARY DOCUMENT26 Oct 2011

Hoefelmann Dirk Ole(5)

  • 4OWNERSHIP DOCUMENT13 Apr 2023
  • 4/AOWNERSHIP DOCUMENT27 Apr 2023
  • 4OWNERSHIP DOCUMENT19 Oct 2022
  • 4OWNERSHIP DOCUMENT2 Dec 2022
  • 3OWNERSHIP DOCUMENT28 Dec 2021

STEWART RICHARD ROSS(4)

  • 4Statement of changes in beneficial ownership3 Jun 2005
  • 4Statement of changes in beneficial ownership24 May 2004
  • 4Statement of changes in beneficial ownership23 Dec 2003
  • 3Initial statement of beneficial ownership31 Jul 2003

NEUMANN DAVID A(4)

  • 4Statement of changes in beneficial ownership10 Feb 2006
  • 4Statement of changes in beneficial ownership23 Sep 2005
  • 4Statement of changes in beneficial ownership31 Jan 2005
  • 4Statement of changes in beneficial ownership12 Feb 2004

JSC INTER RAO Capital(4)

  • 4/AStatement of changes in beneficial ownership (amendment)5 Dec 2013
  • 3Initial statement of beneficial ownership2 Oct 2012
  • 4Statement of changes in beneficial ownership31 Mar 2011
  • 3Initial statement of beneficial ownership31 Mar 2011

Fullerton Dean(4)

  • 4OWNERSHIP DOCUMENT29 Jun
  • 4OWNERSHIP DOCUMENT8 Sep 2025
  • 4OWNERSHIP DOCUMENT2 Aug 2024
  • 3OWNERSHIP DOCUMENT2 Aug 2024

DTE ENERGY CO(3)

  • 4Statement of changes in beneficial ownership28 Jan 2008
  • 5Annual statement of beneficial ownership14 Feb 2006
  • 4Statement of changes in beneficial ownership26 May 2004

EARLEY ANTHONY F JR(3)

  • 4Statement of changes in beneficial ownership3 Jun 2005
  • 4Statement of changes in beneficial ownership24 May 2004
  • 4Statement of changes in beneficial ownership23 Dec 2003

Hutchison Thomas M(3)

  • 4Statement of changes in beneficial ownership22 May 2008
  • 5Annual statement of beneficial ownership12 Feb 2008
  • 3Initial statement of beneficial ownership30 Jun 2006

Greenberg Allan(3)

  • 4Statement of changes in beneficial ownership22 May 2008
  • 4Statement of changes in beneficial ownership31 Oct 2006
  • 3Initial statement of beneficial ownership31 Oct 2006

Bucknam Allen K(3)

  • 4Statement of changes in beneficial ownership24 Oct 2007
  • 4Statement of changes in beneficial ownership18 Sep 2007
  • 3Initial statement of beneficial ownership4 Jun 2007

Johnson Bradley H(3)

  • 4Statement of changes in beneficial ownership7 Feb 2008
  • 4Statement of changes in beneficial ownership22 May 2008
  • 3Initial statement of beneficial ownership4 Jun 2007

Joint Stock Co INTER RAO UES(3)

  • 4/AStatement of changes in beneficial ownership (amendment)5 Dec 2013
  • 4Statement of changes in beneficial ownership19 Nov 2012
  • 3Initial statement of beneficial ownership29 Mar 2011

AXANE SA(3)

  • 4PRIMARY DOCUMENT28 Aug 2015
  • 4PRIMARY DOCUMENT28 Aug 2015
  • 3PRIMARY DOCUMENT4 Aug 2015

Mindnich David(3)

  • 4OWNERSHIP DOCUMENT19 Jan 2024
  • 4OWNERSHIP DOCUMENT31 May 2023
  • 3OWNERSHIP DOCUMENT14 Mar 2023

GENERAL ELECTRIC CO(2)

  • 5Annual statement of beneficial ownership11 Feb 2000
  • 3Initial statement of beneficial ownership28 Oct 1999

MARXE AUSTIN W & GREENHOUSE DAVID M(2)

  • 4PRIMARY DOCUMENT19 Feb 2013
  • 3PRIMARY DOCUMENT2 Apr 2012

NELSON JEAN M(2)

  • 4Statement of changes in beneficial ownership28 Nov 2006
  • 3Initial statement of beneficial ownership28 Nov 2006

OJSC Third Generation Co Of The Wholesale Electricity Market(2)

  • 4Statement of changes in beneficial ownership1 Oct 2012
  • 3Initial statement of beneficial ownership27 Mar 2009

BUCKLER ROBERT J(1)

  • 3Initial statement of beneficial ownership23 Dec 2005

WALDEK DAVID P(1)

  • 3Initial statement of beneficial ownership7 Mar 2007

NORILSK HOLDINGS SA(1)

  • 3MAIN DOCUMENT DESCRIPTION20 Apr 2006

Powers Robert Patrick(1)

  • 3Initial statement of beneficial ownership30 Jun 2006

Schmidt Keith(1)

  • 4OWNERSHIP DOCUMENT2 Dec 2022

Song Kyungyeol(1)

  • 3OWNERSHIP DOCUMENT8 Mar 2021

≥5% Ownership

BlackRock Inc.(14)

  • SC 13G/APlug Power Inc25 Jan 2024
  • SC 13G/APlug Power Inc25 Jan 2023
  • SC 13GPlug Power Inc9 May 2022
  • SC 13G/APlug Power Inc3 Feb 2022
  • SC 13G/APlug Power Inc27 Jan 2021
  • SC 13G/APlug Power Inc10 Jul 2020
  • SC 13G/APlug Power Inc5 Feb 2020
  • SC 13G/APlug Power Inc6 Feb 2019
  • SC 13G/APlug Power Inc29 Jan 2018
  • SC 13G/APlug Power Inc25 Jan 2017

MECHANICAL TECHNOLOGY INC(13)

  • SC 13D/APlug Power Inc26 Aug 2005
  • SC 13D/APlug Power Inc30 Jun 2005
  • SC 13D/APlug Power Inc20 Aug 2003
  • SC 13D/APlug Power Inc22 Jul 2003
  • SC 13D/APlug Power Inc24 Mar 2003
  • SC 13D/APlug Power Inc24 Dec 2002
  • SC 13D/APlug Power Inc14 Nov 2002
  • SC 13D/APlug Power Inc15 May 2002
  • SC 13D/APlug Power Inc12 Jun 2001
  • SC 13D/APlug Power Inc16 May 2001

Interinvest Corp(10)

  • SC 13D/APlug Power Inc2 Oct 2013
  • SC 13D/APlug Power Inc13 Sep 2013
  • SC 13DPlug Power Inc19 Jun 2013
  • SC 13D/APlug Power Inc27 Feb 2013
  • SC 13D/APlug Power Inc21 Feb 2013
  • SC 13D/APlug Power Inc4 Oct 2012
  • SC 13D/APlug Power Inc3 May 2012
  • SC 13D/APlug Power Inc28 Mar 2012
  • SC 13DPlug Power Inc11 Oct 2011
  • SC 13DPlug Power Inc25 Aug 2011

OJSC Third Generation Co Of The Wholesale Electricity Market(7)

  • SC 13D/APlug Power Inc1 Oct 2012
  • SC 13D/APlug Power Inc24 Jul 2012
  • SC 13D/APlug Power Inc14 Sep 2011
  • SC 13D/APlug Power Inc19 May 2011
  • SC 13D/APlug Power Inc25 Jun 2010
  • SC 13D/APlug Power Inc26 Jun 2009
  • SC 13DPlug Power Inc27 Mar 2009

DTE ENERGY CO(6)

  • SC 13G/APlug Power Inc21 Oct 2009
  • SC 13G/APlug Power Inc14 Feb 2008
  • SC 13G/APlug Power Inc14 Feb 2006
  • SC 13G/APlug Power Inc15 Feb 2005
  • SC 13G/APlug Power Inc14 Feb 2002
  • SC 13GPlug Power Inc7 Mar 2001

SMART HYDROGEN, INC.(6)

  • SC 13D/APlug Power Inc23 Dec 2008
  • SC 13D/APlug Power Inc21 Oct 2008
  • SC 13D/APlug Power Inc30 May 2008
  • SC 13D/APlug Power Inc24 Apr 2008
  • SC 13D/APlug Power Inc10 Jul 2006
  • SC 13DPlug Power Inc20 Apr 2006

VANGUARD GROUP INC(5)

  • SC 13G/APlug Power Inc27 Mar
  • SC 13G/APlug Power Inc13 Feb 2024
  • SC 13G/APlug Power Inc9 Feb 2023
  • SC 13G/APlug Power Inc10 Feb 2022
  • SC 13GPlug Power Inc10 Feb 2021

AXA FINANCIAL INC(4)

  • SC 13G/APlug Power Inc13 Feb 2009
  • SC 13GPlug Power Inc14 Feb 2008
  • SC 13G/APlug Power Inc13 Feb 2007
  • SC 13GPlug Power Inc14 Feb 2006

CAPITAL VENTURES INTERNATIONAL(4)

  • SC 13G/APlug Power Inc13 Feb 2015
  • SC 13GPlug Power Inc17 Jan 2014
  • SC 13G/APlug Power Inc14 Jan 2014
  • SC 13GPlug Power Inc22 Feb 2013

Grove Energy Capital LLC(4)

  • SC 13D/APlug Power Inc25 Jun 2025
  • SC 13D/APlug Power Inc6 Nov 2024
  • SC 13D/APlug Power Inc11 May 2022
  • SC 13DPlug Power Inc8 Mar 2021

BlackRock, Inc.(4)

  • SC 13G/APlug Power Inc29 Jul
  • SC 13G/APlug Power Inc7 Apr
  • SC 13G/APlug Power Inc17 Oct 2025
  • SC 13G/APlug Power Inc17 Jul 2025

Invesco Ltd.(3)

  • SC 13G/APlug Power Inc13 Feb 2009
  • SC 13G/APlug Power Inc14 Feb 2008
  • SC 13GPlug Power Inc14 Feb 2007

D. E. SHAW & CO, L.P.(3)

  • SC 13G/APlug Power Inc16 Feb 2021
  • SC 13GPlug Power Inc2 Nov 2020
  • SC 13GPlug Power Inc3 Sep 2020

MARXE AUSTIN W & GREENHOUSE DAVID M(3)

  • SC 13GPlug Power Inc7 Mar 2013
  • SC 13DPlug Power Inc2 Apr 2012
  • SC 13GPlug Power Inc13 Feb 2012

Boston Partners(3)

  • SC 13G/APlug Power Inc12 Feb 2014
  • SC 13G/APlug Power Inc7 Feb 2013
  • SC 13GPlug Power Inc6 Feb 2012

Hudson Bay Capital Management LP(3)

  • SC 13G/APlug Power Inc7 Feb 2020
  • SC 13G/APlug Power Inc4 Feb 2019
  • SC 13GPlug Power Inc30 Jan 2017

FiveMore Fund Ltd(3)

  • SC 13D/APlug Power Inc16 Aug 2012
  • SC 13DPlug Power Inc16 Apr 2012
  • SC 13DPlug Power Inc2 Apr 2012

GENERAL ELECTRIC CO(2)

  • SC 13G/APlug Power Inc10 Feb 2006
  • SC 13GPlug Power Inc11 Feb 2000

MERRILL LYNCH & CO INC(2)

  • SC 13G/APlug Power Inc31 Jan 2000
  • SC 13GPlug Power Inc14 Jan 2000

FIRST ALBANY COMPANIES INC(2)

  • SC 13D/APlug Power Inc10 Jan 2005
  • SC 13DPlug Power Inc30 Dec 2002

DEUTSCHE BANK AG\(2)

  • SC 13G/APlug Power Inc8 May 2008
  • SC 13GPlug Power Inc30 Jan 2008

PROKHOROV MIKHAIL D(2)

  • SC 13D/APlug Power Inc21 May 2008
  • SC 13DPlug Power Inc25 Apr 2008

NORGES BANK(2)

  • SC 13G/APlug Power Inc24 Jul 2025
  • SC 13GPlug Power Inc10 Oct 2024

Empery Asset Management, LP(2)

  • SC 13G/APlug Power Inc26 Jan 2012
  • SC 13GPlug Power Inc27 May 2011

DTE Energy Foundation(2)

  • SC 13G/APlug Power Inc9 Feb 2010
  • SC 13GPlug Power Inc21 Oct 2009

JSC INTER RAO Capital(2)

  • SC 13D/APlug Power Inc5 Dec 2013
  • SC 13DPlug Power Inc20 Nov 2012

Air Liquide Investissements D'Avenir Et De Demonstration(2)

  • SC 13D/APlug Power Inc28 Aug 2014
  • SC 13DPlug Power Inc19 Mar 2014

AXANE SA(2)

  • SC 13D/APlug Power Inc28 Aug 2015
  • SC 13DPlug Power Inc4 Aug 2015

PLUG POWER INC(1)

  • SC 13DH Power Corp21 Nov 2002

MMC NORLISK NICKEL(1)

  • SC 13DPlug Power Inc10 May 2011

POTANIN VLADIMIR O(1)

  • SC 13DPlug Power Inc17 Apr 2009

Joint Stock Co INTER RAO UES(1)

  • SC 13DPlug Power Inc19 Nov 2012

VANGUARD CAPITAL MANAGEMENT LLC(1)

  • SC 13GPlug Power Inc30 Apr