George C. McNamee is Director at PLUG POWER INC (PLUG). They have made 22 open-market trades across 2 companies since 2006, most recently 2026-06-11.
CIK 0001008001
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
6 open-market purchases totalling $981K since 2010, against 16 sales. Across 6 scored buys the stock is down 0.7% at ninety days, and 4.8 points behind the S&P over the same stretch.
6 scored purchases · one row per filing · discretionary only
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 50% | 100% | 33% |
| Avg Move | -1.5% | +3.8% | -0.7% |
| Alpha | +0.5% | +2.2% | -4.8% |
| Scored | 6 | 6 | 6 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| PLUG | SELL · 10b5-1 | 2024-11-01 | 2024-11-05 | $2.09 | $21K | -11.4% | +16.1% | -11.8% |
| PLUG | SELL · 10b5-1 | 2024-08-01 | 2024-08-02 | $2.37 | $24K | +2.5% | -11.2% | -0.5% |
| PLUG | SELL · 10b5-1 | 2024-05-10 | 2024-05-13 | $2.56 | $26K | -37.1% | -40.3% | -60.1% |
| PLUG | SELL · 10b5-1 | 2021-01-12 | 2021-01-14 | $66.43 | $1.3M | +2.0% | -6.6% | -55.0% |
| PLUG | SELL · 10b5-1 | 2021-01-08 | 2021-01-11 | $52.07 | $521K | +7.2% | +3.1% | -52.4% |
| PLUG | SELL | 2021-01-06 | 2021-01-08 | $35.00 | $350K | +30.3% | +35.4% | -33.3% |
| PLUG | SELL | 2020-11-09 | 2020-11-12 | $21.05 | $632K | +9.7% | +5.5% | +164.2% |
| PLUG | SELL | 2020-10-08 | 2020-10-13 | $19.00 | $855K | -13.6% | +34.8% | +210.2% |
| PLUG | SELL | 2020-08-06 | 2020-08-10 | $10.30 | $670K | +14.1% | +1.3% | +69.5% |
| PLUG | SELL · 10b5-1 | 2020-07-13 | 2020-07-14 | $8.84 | $13K | -3.3% | +28.9% | +100.2% |
| PLUG | BUY | 2019-03-18 | 2019-03-18 | $2.34 | $234K | -2.4% | +3.2% | -3.2% |
| PLUG | BUY | 2017-09-14 | 2017-09-18 | $2.34 | $59K | +6.1% | +3.2% | -3.6% |
| PLUG | BUY | 2017-09-07 | 2017-09-18 | $2.13 | $53K | +6.1% | +3.2% | -3.6% |
| PLUG | BUY | 2017-09-07 | 2017-09-18 | $2.20 | $440K | +6.1% | +3.2% | -3.6% |
| IRBT | SELL · 10b5-1 | 2015-10-27 | 2015-10-29 | $29.58 | $887K | -11.4% | -0.7% | -4.6% |
| IRBT | SELL | 2015-05-12 | 2015-05-13 | $31.97 | $320K | -11.4% | -0.7% | -0.7% |
| IRBT | SELL · 10b5-1 | 2015-03-26 | 2015-03-27 | $31.98 | $320K | -11.4% | -0.7% | -0.7% |
| IRBT | SELL | 2014-05-27 | 2014-05-28 | $36.93 | $369K | -11.4% | -0.7% | -0.7% |
| IRBT | SELL | 2013-04-29 | 2013-04-30 | $28.50 | $285K | -11.4% | -0.7% | -0.7% |
| PLUG | BUY | 2011-05-31 | 2011-06-02 | $2.42 | $97K | -12.5% | +5.0% | +5.0% |
| PLUG | BUY | 2010-03-19 | 2010-03-22 | $0.61 | $98K | -12.5% | +5.0% | +5.0% |
| IRBT | SELL | 2009-03-12 | 2009-03-16 | $8.15 | $98K | -11.4% | -0.7% | -0.7% |
| IRBT | SELL | 2009-03-04 | 2013-02-19 | $7.37 | $29K | -11.4% | -0.7% | -0.7% |
| IRBT | SELL | 2009-03-03 | 2009-03-05 | $7.45 | $134K | -11.4% | -0.7% | -0.7% |
| IRBT | SELL | 2006-11-24 | 2006-11-27 | $20.00 | $82K | -11.4% | -0.7% | -0.7% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.