SPERRY MARK A
Related Filers (1)
Ownership (18)
4/A
Friday, 3/26/2010
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Monday, 3/8/2010
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Friday, 2/19/2010
PLUG POWER INC: 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
Tuesday, 4/7/2009
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Wednesday, 3/11/2009
PLUG POWER INC: Statement of changes in beneficial ownership of securities
5
Tuesday, 2/17/2009
PLUG POWER INC: Annual statement of changes in beneficial ownership of securities
4
Monday, 1/5/2009
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
5
Tuesday, 2/12/2008
PLUG POWER INC: Annual statement of changes in beneficial ownership of securities
4
Thursday, 2/7/2008
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Tuesday, 3/6/2007
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Friday, 2/10/2006
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Friday, 9/23/2005
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Monday, 2/14/2005
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Monday, 1/31/2005
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Thursday, 8/12/2004
PLUG POWER INC: Statement of changes in beneficial ownership of securities
4
Thursday, 2/12/2004
PLUG POWER INC: Statement of changes in beneficial ownership of securities