Mark J. Bonney is Director at PLUG POWER INC (PLUG). They have made 5 open-market trades across 3 companies since 2013, most recently 2026-10-01.
CIK 0001232607
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.
3 open-market purchases totalling $226K since 2013, against 2 sales. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| SEAC | BUY | 2019-06-11 | 2019-06-13 | $1.50 | $190K | -10.0% | +13.3% | +104.0% |
| SIGM | SELL | 2014-10-02 | 2014-10-06 | $4.08 | $90K | -7.3% | +1.9% | +1.9% |
| ZIXI | BUY | 2014-04-24 | 2014-04-24 | $3.50 | $18K | -6.6% | -3.6% | -3.6% |
| SIGM | SELL | 2013-09-11 | 2013-09-13 | $6.05 | $47K | -7.3% | +1.9% | +1.9% |
| ZIXI | BUY | 2013-05-13 | 2013-05-14 | $3.65 | $18K | -6.6% | -3.6% | -3.6% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.