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| Date | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|
| 2017-12-26 | SCHAFFER DERACE L | Director | Buy | 69,424 | $1.76 | $122,146.78 | +9.8% | → |
| 2017-12-07 | SCHAFFER DERACE L | Director | Buy | 23,745 | $1.78 | $42,303.53 | +3.6% | → |
| 2017-12-05 | SCHAFFER DERACE L | Director | Buy | 26,010 | $1.79 | $46,587.57 | +2.9% | → |
| 2017-11-30 | SCHAFFER DERACE L | Director | Buy | 33,315 | $1.91 | $63,638.65 | +4.1% | → |
| 2017-11-27 | SCHAFFER DERACE L | Director | Buy | 21,808 | $2.03 | $44,282.19 | +3.0% | → |
| 2017-11-21 | SCHAFFER DERACE L | Director | Buy | 18,331 | $2.08 | $38,214.73 | +2.7% | → |
| 2017-08-25 | SCHAFFER DERACE L | Director | Buy | 67,326 | $2.25 | $151,281.67 | +20.6% | → |
| 2017-08-23 | Drutz David | Director | Buy | 10,000 | $2.21 | $22,097.00 | +21.5% | → |
| 2017-08-23 | SCHAFFER DERACE L | Director | Buy | 50,000 | $2.21 | $110,263.47 | +15.6% | → |
| 2017-06-06 | Roberts M Scot | Chief Scientific Officer | Buy | 449 | $4.42 | $1,984.58 | New | → |
| 2017-06-02 | GILL JOHN | Director | Buy | 1,000 | $4.34 | $4,343.50 | +1.2% | → |
| 2016-12-09 | PRESCOTT GROUP CAPITAL MANAGEMENT, L.L.C. | 10% Owner | Sell | 1,354,632 | $3.26 | $4,411,695.53 | -6.0% | → |
| 2016-04-13 | RICHMAN ERIC I | - | Sale+OE | 329,354 | $2.20 | $724,578.80 | -31.8% | → |
| 2016-04-08 | RICHMAN ERIC I | - | Sale+OE | 11,767 | $2.20 | $25,887.40 | -3.2% | → |
| 2015-03-19 | St Peter Steven | - | Buy | 25,000 | $1.65 | $41,212.50 | New | → |
| 2015-01-07 | CHANG LINDA L | SVP, CFO & Secretary | Sale+OE | 29,600 | $2.10 | $62,160.00 | -49.7% | → |