WILLIS GARY K

Related Filers (6)

Other (1)

144
Monday, 11/15/2010
Filing for proposed sale of securities under Rule 144
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Ownership (134)

4
Thursday, 1/4/2024
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Wednesday, 10/4/2023
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Thursday, 7/6/2023
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Thursday, 6/29/2023
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Wednesday, 4/5/2023
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Thursday, 1/5/2023
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Wednesday, 10/5/2022
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Tuesday, 7/26/2022
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Friday, 7/15/2022
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Tuesday, 4/5/2022
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Wednesday, 1/5/2022
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Tuesday, 10/5/2021
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Thursday, 8/19/2021
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Wednesday, 7/21/2021
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Wednesday, 1/6/2021
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Tuesday, 12/15/2020
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Monday, 10/5/2020
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Monday, 7/6/2020
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Tuesday, 6/9/2020
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Friday, 4/3/2020
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Monday, 1/6/2020
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Thursday, 10/3/2019
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Wednesday, 7/3/2019
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Monday, 7/1/2019
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Wednesday, 4/3/2019
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Friday, 1/4/2019
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Wednesday, 10/3/2018
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Thursday, 7/5/2018
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Friday, 5/18/2018
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Wednesday, 4/4/2018
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Thursday, 1/4/2018
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Tuesday, 10/10/2017
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Tuesday, 9/5/2017
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Friday, 6/30/2017
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Wednesday, 4/5/2017
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Thursday, 1/5/2017
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Monday, 11/7/2016
ROFIN SINAR TECHNOLOGIES INC: Statement of changes in beneficial ownership of securities
4
Monday, 10/17/2016
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Tuesday, 10/4/2016
ROFIN SINAR TECHNOLOGIES INC: Statement of changes in beneficial ownership of securities
4
Tuesday, 7/5/2016
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Friday, 5/20/2016
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Tuesday, 4/5/2016
PLUG POWER INC: Statement of changes in beneficial ownership of securities
5
Tuesday, 2/16/2016
PLUG POWER INC: Annual statement of changes in beneficial ownership of securities
4
Friday, 1/15/2016
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Wednesday, 10/28/2015
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Friday, 10/2/2015
ROFIN SINAR TECHNOLOGIES INC: Statement of changes in beneficial ownership of securities
4
Friday, 7/17/2015
PLUG POWER INC: Statement of changes in beneficial ownership of securities
5
Friday, 2/13/2015
PLUG POWER INC: Annual statement of changes in beneficial ownership of securities
4
Friday, 2/13/2015
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Thursday, 10/2/2014
ROFIN SINAR TECHNOLOGIES INC: Statement of changes in beneficial ownership of securities
4
Wednesday, 7/2/2014
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Friday, 6/20/2014
ZYGO CORP: Statement of changes in beneficial ownership of securities
4
Friday, 4/4/2014
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Tuesday, 1/21/2014
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Wednesday, 11/13/2013
ZYGO CORP: Statement of changes in beneficial ownership of securities
4
Monday, 10/7/2013
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Wednesday, 10/2/2013
ROFIN SINAR TECHNOLOGIES INC: Statement of changes in beneficial ownership of securities
4
Friday, 7/5/2013
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Wednesday, 4/3/2013
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Wednesday, 4/3/2013
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4/A
Friday, 2/22/2013
ROFIN SINAR TECHNOLOGIES INC: Statement of changes in beneficial ownership of securities
4
Wednesday, 11/14/2012
ZYGO CORP: Statement of changes in beneficial ownership of securities
4
Friday, 10/5/2012
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Tuesday, 10/2/2012
ROFIN SINAR TECHNOLOGIES INC: Statement of changes in beneficial ownership of securities
4
Friday, 8/31/2012
ZYGO CORP: Statement of changes in beneficial ownership of securities
4
Friday, 7/6/2012
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Friday, 5/18/2012
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Wednesday, 4/4/2012
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Wednesday, 1/18/2012
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Wednesday, 11/16/2011
ZYGO CORP: Statement of changes in beneficial ownership of securities
4
Tuesday, 10/11/2011
ROFIN SINAR TECHNOLOGIES INC: Statement of changes in beneficial ownership of securities
4
Wednesday, 10/5/2011
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Friday, 9/30/2011
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Thursday, 8/4/2011
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Monday, 5/16/2011
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Wednesday, 4/6/2011
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Monday, 1/10/2011
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Tuesday, 11/16/2010
ZYGO CORP: Statement of changes in beneficial ownership of securities
4
Monday, 11/15/2010
ROFIN SINAR TECHNOLOGIES INC: Statement of changes in beneficial ownership of securities
4
Wednesday, 10/6/2010
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Monday, 10/4/2010
ROFIN SINAR TECHNOLOGIES INC: Statement of changes in beneficial ownership of securities
4
Tuesday, 7/20/2010
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Friday, 5/21/2010
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Tuesday, 4/6/2010
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Friday, 2/12/2010
ZYGO CORP: Statement of changes in beneficial ownership of securities
4
Thursday, 1/7/2010
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Monday, 10/5/2009
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Friday, 10/2/2009
ROFIN SINAR TECHNOLOGIES INC: Statement of changes in beneficial ownership of securities
4
Tuesday, 7/7/2009
PLUG POWER INC: Statement of changes in beneficial ownership of securities
3
Thursday, 6/18/2009
ZYGO CORP: Initial statement of beneficial ownership of securities
4
Thursday, 6/18/2009
ZYGO CORP: Statement of changes in beneficial ownership of securities
4
Friday, 5/22/2009
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Friday, 4/3/2009
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Wednesday, 1/7/2009
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Friday, 12/12/2008
VION PHARMACEUTICALS INC: Statement of changes in beneficial ownership of securities
4
Monday, 10/6/2008
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Thursday, 10/2/2008
ROFIN SINAR TECHNOLOGIES INC: Statement of changes in beneficial ownership of securities
4
Thursday, 7/3/2008
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Thursday, 5/22/2008
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Monday, 4/7/2008
PLUG POWER INC: Statement of changes in beneficial ownership of securities
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