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Form 4 Filings | Insider Buys | Significant Buys |
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"Insiders might sell their shares for any number of reasons, but they buy them for only one:
they think the price will rise" - Peter Lynch ==>> What is insider trading>> |

| Transaction & Date | Reported Date |
Company | Symbol | Insider Relationship |
Shares Traded | Average Price | Total Amount |
Shares Ownership |
Filing |
| 2008-04-03 Sale |
2008-05-22 4:51 pm | PLUG POWER INC | PLUG | Millington Joseph M (VP Human Resources) | 2,860 | $2.6 | $7,436 | 16,890 (Direct) | View |
| 2008-04-24 Sale | 2008-04-25 10:42 am |
PLUG POWER INC | PLUG | PROKHOROV MIKHAIL D (10% owner) | 640,803 | $0 | $0 | 0 (Indirect) |
View |
| 2008-02-08 Purchase | 2008-02-11 1:24 pm | PLUG POWER INC | PLUG | SMART HYDROGEN, INC. MMC NORLISK NICKEL Clayburn Development Inc. Branton LTD PROKHOROV MIKHAIL D POTANIN VLADIMIR O (10% owner) | 5,935 | $3.323 | $19,721 | 5,126,939 (Direct) | View |
| 2007-10-22 Sale | 2007-10-24 3:14 pm | PLUG POWER INC | PLUG | Bucknam Allen K (VP Strategy and Business Dev) | 3,500 | $4.56 | $15,960 | 13,968 (Direct) | View |
| 2007-02-01 Sale | 2007-03-06 09:52 am | PLUG POWER INC | PLUG | ELTER JOHN F (VP Res. & System Architecture) | 1,333 | $3.66 | $4,879 | 42,820 (Direct) | View |
| 2007-02-01 Sale | 2007-03-06 09:52 am |
PLUG POWER INC | PLUG | SILVESTRI GREGORY A (Chief Operating Officer) | 2,800 | $3.66 | $10,248 | 51,599 (Direct) | View |
| 2005-06-01 Sale | 2005-06-03 3:29 pm | PLUG POWER INC | PLUG | STEWART RICHARD ROSS (Director) | 2,814 | $6.22 | $17,503 | 0 (Direct) | View |
| 2005-06-01 Sale |
2005-06-03 3:28 pm |
PLUG POWER INC | PLUG | EARLEY ANTHONY F JR (Director) | 6,431 | $6.22 | $40,001 | 4,000 (Direct) |
View |
| 2003-08-18 Sale | 2003-08-19 11:31 am | PLUG POWER INC | PLUG | MECHANICAL TECHNOLOGY INC (Former 10% Owner) | 500,000 | $5.29 | $2,645,000 | 6,073,227 (Direct) |
View |
| Transaction & Date | Reported Date |
Company | Symbol | Insider Relationship | Shares Traded |
Average Price | Total Amount |
Shares Ownership |
Filing |
| 2008-10-02 Option Award |
2008-10-06 2:05 pm |
PLUG POWER INC | PLUG | Woicke Peter (Director) | 9,615 | $0 | $0 | 32,835 (Direct) |
View |
| 2008-10-02 Option Award | 2008-10-06 1:58 pm |
PLUG POWER INC | PLUG | WILLIS GARY K (Director) | 5,409 | $0 | $0 | 38,039 (Direct) | View |
| 2008-10-02 Option Award |
2008-10-06 1:54 pm |
PLUG POWER INC | PLUG | Rosenblum Lisa (Director) | 1,402 | $0 | $0 | 11,394 (Direct) | View |
| 2008-10-02 Option Award | 2008-10-06 1:50 pm |
PLUG POWER INC | PLUG | Pivnyuk Dennis V (Director) | 3,365 | $0 | $0 | 3,365 (Direct) | View |
| 2008-10-02 Option Award |
2008-10-06 1:42 pm | PLUG POWER INC | PLUG | MCNAMEE GEORGE C (Director) | 7,212 | $0 | $0 | 268,424 (Direct) |
View |
| 2008-10-02 Option Award |
2008-10-06 1:23 pm |
PLUG POWER INC | PLUG | McGuire Michael E Jr (Director) | 4,808 | $0 | $0 | 5,845 (Direct) |
View |
| 2008-10-02 Option Award |
2008-10-06 11:50 am |
PLUG POWER INC | PLUG | HELMER MAUREEN O (Director) | 6,611 | $0 | $0 | 31,895 (Direct) |
View |
| 2008-10-02 Option Award | 2008-10-06 11:42 am | PLUG POWER INC | PLUG | Gross Joel D (Director) | 6,010 | $0 | $0 | 21,312 (Direct) |
View |
| 2008-10-02 Option Award |
2008-10-06 11:36 am | PLUG POWER INC | PLUG | GRANT J DOUGLAS (Director) | 6,611 | $0 | $0 | 50,802 (Direct) |
View |
| 2008-10-02 Option Award |
2008-10-06 11:26 am | PLUG POWER INC | PLUG | GARBERDING LARRY (Director) | 6,010 | $0 | $0 | 55,437 (Direct) | View |
| 2008-10-02 Option Award | 2008-10-06 11:17 am | PLUG POWER INC | PLUG | Dimitri Andrew (Director) | 2,404 | $0 | $0 | 2,404 (Direct) | View |
| 2008-10-02 Option Award |
2008-10-06 10:52 am |
PLUG POWER INC | PLUG | Batekhin Sergey (Director) | 1,402 | $0 | $0 | 12,093 (Direct) |
View |
| 2008-07-02 Option Award | 2008-07-03 11:15 am | PLUG POWER INC | PLUG | Woicke Peter (Director) | 4,149 | $0 | $0 | 23,220 (Direct) |
View |
| 2008-07-02 Option Award | 2008-07-03 10:42 am |
PLUG POWER INC | PLUG | Polikarpov Sergey (Director) | 1,037 | $0 | $0 | 11,180 (Direct) | View |
| 2008-01-24 Option Award | 2008-05-22 4:51 pm | PLUG POWER INC | PLUG | Millington Joseph M (VP Human Resources) | 7,000 | $2.6 | $18,200 | 19,750 (Direct) | View |
| 2007-12-24 Gift |
2008-01-28 5:30 pm | PLUG POWER INC | PLUG | DTE ENERGY CO (10% owner) | 750,000 | $0 | $0 | 8,054,463 (Indirect) |
View |
| 2006-11-27 Option Award | 2006-11-28 5:18 pm |
PLUG POWER INC | PLUG | NELSON JEAN M (Chief Financial Officer) | 24,000 | $3.95 | $94,800 | 24,000 (Direct) |
View |
| 2006-02-01 Option Award | 2006-02-10 4:13 pm |
PLUG POWER INC | PLUG | NEUMANN DAVID A (Chief Financial Officer) | 22,815 | $5.58 | $127,308 | 35,282 (Direct) | View |
| 2005-06-01 Option Award | 2005-06-03 3:29 pm |
PLUG POWER INC | PLUG | STEWART RICHARD ROSS (Director) | 2,814 | $6.22 | $17,503 | 2,814 (Direct) | View |
| 2005-06-01 Option Award |
2005-06-03 3:28 pm |
PLUG POWER INC | PLUG | EARLEY ANTHONY F JR (Director) | 6,431 | $6.22 | $40,001 | 10,413 (Direct) |
View |
| 2005-05-13 Option Award |
2005-05-16 3:12 pm |
PLUG POWER INC | PLUG | SAILLANT ROGER B (CEO Director) | 5,000 | $5.63 | $28,150 | 50,169 (Direct) | View |
| Transaction & Date | Reported Date |
Exercisable Expiration | Company | Symbol | Insider Relationship | Shares Traded | Conversion Price | Shares Ownership | Filing |
| 2008-11-07 Option Award |
2008-11-10 2:29 pm |
N/A 2018-11-07 | PLUG POWER INC | PLUG | DRAZAN JEFFREY M (Director) | 125,000 | $0.87 | 125,000 (Direct) | View |
| 2008-07-30 Option Award | 2008-08-01 10:54 am | N/A 2018-07-30 |
PLUG POWER INC | PLUG | Pivnyuk Dennis V (Director) | 15,000 | $2.42 | 15,000 (Direct) | View |
| 2008-07-30 Option Award |
2008-08-01 10:46 am |
N/A 2018-07-30 |
PLUG POWER INC | PLUG | Dimitri Andrew (Director) | 15,000 | $2.42 | 15,000 (Direct) |
View |
| 2008-01-24 Option Award |
2008-05-22 4:54 pm |
N/A 2018-01-24 |
PLUG POWER INC | PLUG | Anderson Gerald A (Chief Financial Officer) | 27,000 | $2.6 | 72,000 (Direct) | View |
| 2008-01-24 Option Award | 2008-05-22 4:54 pm | N/A 2018-01-24 | PLUG POWER INC | PLUG | Conway Gerard L JR (General Counsel) | 27,000 | $2.6 | 111,121 (Direct) | View |
| 2008-01-24 Option Award | 2008-05-22 4:53 pm | N/A 2018-01-24 | PLUG POWER INC | PLUG | Greenberg Allan (Vice President, Sales) | 27,000 | $2.6 | 77,000 (Direct) |
View |
| 2008-01-24 Option Award |
2008-05-22 4:53 pm | N/A 2018-01-24 | PLUG POWER INC | PLUG | Hutchison Thomas M (Vice President of Engineering) | 27,000 | $2.6 | 82,000 (Direct) | View |
| 2008-01-24 Option Award | 2008-05-22 4:52 pm |
N/A 2018-01-24 |
PLUG POWER INC | PLUG | Johnson Bradley H (VP Customer Operations) | 27,000 | $2.6 | 226,000 (Direct) |
View |
| 2008-01-24 Option Award | 2008-05-22 4:51 pm |
N/A 2018-01-24 | PLUG POWER INC | PLUG | Millington Joseph M (VP Human Resources) | 27,000 | $2.6 | 87,000 (Direct) | View |
| 2008-01-24 Option Award | 2008-05-22 4:51 pm |
N/A 2018-01-24 | PLUG POWER INC | PLUG | Reid Chris (Vice President) | 27,000 | $2.6 | 77,000 (Direct) | View |
| 2008-01-24 Option Award | 2008-05-22 4:50 pm |
N/A 2018-01-24 |
PLUG POWER INC | PLUG | SPERRY MARK A (VP and Chief Marketing Officer) | 27,000 | $2.6 | 187,027 (Direct) | View |
| 2008-04-24 Sale |
2008-04-25 10:42 am | N/A N/A |
PLUG POWER INC | PLUG | PROKHOROV MIKHAIL D (10% owner) | 49,370 | $0 | 0 (Indirect) |
View |
| 2008-04-08 Option Award | 2008-04-10 11:51 am |
N/A 2018-04-08 |
PLUG POWER INC | PLUG | Marsh Andrew (President & CEO Director) | 400,000 | $3.58 | 400,000 (Direct) |
View |
| 2006-11-27 Option Award | 2006-11-28 5:18 pm |
N/A 2016-11-27 |
PLUG POWER INC | PLUG | NELSON JEAN M (Chief Financial Officer) | 60,000 | $3.95 | 60,000 (Direct) |
View |
| 2006-06-28 Option Award |
2006-07-05 1:11 pm | 2007-06-28 2016-06-28 | PLUG POWER INC | PLUG | HICKEY DOUGLAS T (Director) | 10,000 | $4.64 | 75,000 (Direct) |
View |
| 2006-06-28 Option Award | 2006-06-30 3:53 pm |
2007-06-28 2016-06-28 |
PLUG POWER INC | PLUG | SHALIKASHVILI JOHN M (Director) | 10,000 | $4.64 | 95,000 (Direct) | View |
| 2006-02-01 Option Award |
2006-02-10 4:13 pm | N/A 2016-02-08 | PLUG POWER INC | PLUG | NEUMANN DAVID A (Chief Financial Officer) | 40,000 | $5.58 | 116,979 (Direct) |
View |
| 2005-06-01 Option Award | 2005-06-03 3:29 pm | 2006-06-01 2015-06-01 | PLUG POWER INC | PLUG | STEWART RICHARD ROSS (Director) | 10,000 | $6.22 | 35,000 (Direct) | View |
| 2005-06-01 Option Award | 2005-06-03 3:28 pm | 2006-06-01 2015-06-01 |
PLUG POWER INC | PLUG | EARLEY ANTHONY F JR (Director) | 12,000 | $6.22 | 89,000 (Direct) |
View |
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