| 2021-11-16 | ATRA | Chief Operations Officer | Sell | 3,332 | $17.12 | $57,033.51 | -2.9% | → |
| 2021-11-15 | ATRA | Chief Operations Officer | Sale+OE | 7,000 | $17.71 | $124,004.30 | -5.7% | → |
| 2021-09-22 | ATRA | Chief Operations Officer | Sale+OE | 10,500 | $17.00 | $178,500.00 | -8.1% | → |
| 2021-09-15 | ATRA | Chief Operations Officer | Sell | 3,116 | $15.61 | $48,647.30 | -2.5% | → |
| 2021-08-30 | ATRA | Chief Operations Officer | Sell | 3,500 | $15.00 | $52,500.00 | -2.8% | → |
| 2021-08-17 | ATRA | Chief Operations Officer | Sell | 2,426 | $12.53 | $30,402.63 | -1.9% | → |
| 2021-05-18 | ATRA | Chief Operations Officer | Sell | 2,453 | $14.55 | $35,691.15 | -1.9% | → |
| 2021-05-17 | ATRA | Chief Operations Officer | Sell | 3,500 | $15.00 | $52,500.00 | -2.6% | → |
| 2021-04-05 | ATRA | Chief Operations Officer | Sell | 655 | $14.74 | $9,654.70 | -0.5% | → |
| 2021-03-26 | ATRA | Chief Operations Officer | Sell | 2,640 | $14.58 | $38,491.20 | -1.9% | → |
| 2021-03-15 | ATRA | Chief Operations Officer | Sale+OE | 7,000 | $17.41 | $121,870.00 | -4.8% | → |
| 2021-03-02 | ATRA | Chief Operations Officer | Sell | 1,665 | $16.74 | $27,872.10 | -1.2% | → |
| 2021-02-08 | ATRA | Chief Operations Officer | Sell | 3,886 | $20.39 | $79,235.54 | -3.5% | → |
| 2021-01-15 | ATRA | Chief Operations Officer | Sale+OE | 7,000 | $18.84 | $131,880.00 | -6.0% | → |
| 2020-12-16 | ATRA | Chief Operations Officer | Sale+OE | 7,000 | $23.11 | $161,735.00 | -3.0% | → |
| 2020-11-17 | ATRA | Chief Operations Officer | Sell | 1,648 | $19.77 | $32,587.55 | -1.4% | → |
| 2020-11-13 | ATRA | Chief Operations Officer | Sale+OE | 7,500 | $18.49 | $138,688.00 | -3.1% | → |
| 2020-08-18 | ATRA | Chief Operations Officer | Sell | 1,678 | $12.09 | $20,287.02 | -1.4% | → |
| 2020-05-18 | ATRA | Chief Operations Officer | Sell | 1,603 | $11.22 | $17,985.66 | -1.3% | → |
| 2020-04-06 | ATRA | Chief Operations Officer | Sell | 657 | $7.94 | $5,216.58 | -0.5% | → |
| 2020-03-27 | ATRA | Chief Operations Officer | Sell | 2,740 | $9.17 | $25,125.80 | -2.1% | → |
| 2020-02-06 | ATRA | Chief Tech. Operations Officer | Sell | 4,117 | $14.21 | $58,502.57 | -7.1% | → |
| 2019-09-27 | ATRA | Chief Tech. Operations Officer | Sell | 3,500 | $13.51 | $47,285.00 | -5.7% | → |
| 2019-05-06 | ATRA | Chief Tech. Operations Officer | Sale+OE | 1,500 | $35.00 | $52,500.00 | -2.4% | → |
| 2019-04-01 | ATRA | Chief Tech. Operations Officer | Sale+OE | 1,500 | $39.96 | $59,940.00 | -2.4% | → |
| 2019-03-01 | ATRA | Chief Tech. Operations Officer | Sale+OE | 1,500 | $36.13 | $54,202.00 | -1.6% | → |
| 2019-02-02 | ATRA | Chief Tech. Operations Officer | Sale+OE | 1,500 | $38.01 | $57,020.00 | -2.3% | → |
| 2019-01-02 | ATRA | Chief Tech. Operations Officer | Sale+OE | 1,500 | $35.00 | $52,500.00 | -4.5% | → |
| 2018-12-03 | ATRA | Chief Tech. Operations Officer | Sale+OE | 1,500 | $41.14 | $61,704.11 | -1.5% | → |
| 2018-11-01 | ATRA | Chief Tech. Operations Officer | Sale+OE | 1,500 | $35.00 | $52,500.00 | -4.5% | → |