| Symbol | Relationship | Date | Transaction | Cost | # Shares | Value($) | Total Shares | Form 4 |
| ATRS | Director | Jan 10, 2020 | Option Exercise | $2.66 | 56 | 149 | 51,807 | Jan 14, 2020, 06:07 PM |
| ATRS | Director | Jan 10, 2020 | Sale | $4.50 | 56 | 252 | 51,751 | Jan 14, 2020, 06:07 PM |
| ATRS | Director | Jan 02, 2020 | Option Exercise | $2.18 | 99,944 | 218,141 | 101,751 | Jan 06, 2020, 06:06 PM |
| ATRS | Director | Jan 02, 2020 | Sale | $4.59 | 99,944 | 459,242 | 51,751 | Jan 06, 2020, 06:06 PM |
| ATRS | Director | Dec 23, 2019 | Option Exercise | $1.12 | 150,000 | 168,000 | 201,751 | Dec 26, 2019, 04:57 PM |
| ATRS | Director | Dec 23, 2019 | Sale | $4.71 | 150,000 | 706,500 | 51,751 | Dec 26, 2019, 04:57 PM |
| ATRS | Director | Nov 11, 2019 | Option Exercise | $3.77 | 25,000 | 94,250 | 51,751 | Nov 13, 2019, 05:35 PM |
| ATRS | Director | Jun 13, 2019 | Option Exercise | $2.92 | 23,973 | 70,001 | 76,751 | Jun 14, 2019, 05:46 PM |
| ATRS | Director | Apr 10, 2017 | Option Exercise | $2.80 | 50,000 | 140,000 | 52,778 | Apr 12, 2017, 06:12 PM |
| ATRS | Director | Mar 18, 2016 | Buy | $0.72 | 50,000 | 36,000 | 102,778 | Mar 21, 2016, 04:43 PM |
| ATRS | Director | Aug 11, 2014 | Buy | $2.00 | 25,000 | 49,900 | 52,778 | Aug 12, 2014, 05:17 PM |
| Symbol | Relationship | Date | Transaction | Value($) |
| ATRS | Director | Jan 10, 2020 | Option Exercise | 149 |
| ATRS | Director | Jan 10, 2020 | Sale | 252 |
| ATRS | Director | Jan 02, 2020 | Option Exercise | 218,141 |
| ATRS | Director | Jan 02, 2020 | Sale | 459,242 |
| ATRS | Director | Dec 23, 2019 | Option Exercise | 168,000 |
| ATRS | Director | Dec 23, 2019 | Sale | 706,500 |
| ATRS | Director | Nov 11, 2019 | Option Exercise | 94,250 |
| ATRS | Director | Jun 13, 2019 | Option Exercise | 70,001 |
| ATRS | Director | Apr 10, 2017 | Option Exercise | 140,000 |
| ATRS | Director | Mar 18, 2016 | Buy | 36,000 |
| ATRS | Director | Aug 11, 2014 | Buy | 49,900 |