| Owner | Relationship | Date | Transaction | Cost | # Shares | Value($) | Total Shares | Form 4 |
| CRAWFORD EDWARD F | 10% Owner | Jan 15, 2021 | Buy | $17.65 | 27,933 | 493,017 | 27,933 | Jan 20, 2021, 11:34 AM |
| CRAWFORD EDWARD F | 10% Owner | Jan 15, 2021 | Buy | $17.65 | 31,785 | 561,005 | 43,120 | Jan 20, 2021, 11:34 AM |
| CRAWFORD EDWARD F | 10% Owner | Jan 15, 2021 | Buy | $17.65 | 282 | 4,977 | 282 | Jan 20, 2021, 11:34 AM |
| Smith Kirin | Director | Dec 09, 2020 | Option Exercise | $2.92 | 1,000 | 2,925 | 20,935 | Dec 15, 2020, 05:23 PM |
| Powers Brian E | Chief Executive Officer | May 24, 2020 | Option Exercise | $14.00 | 1,276 | 17,864 | 61,137 | May 26, 2020, 04:36 PM |
| Marek Kelly | Chief Financial Officer | May 24, 2020 | Option Exercise | $14.00 | 234 | 3,276 | 20,766 | May 26, 2020, 04:33 PM |
| Powers Brian E | Chief Executive Officer | May 20, 2020 | Option Exercise | $14.07 | 587 | 8,259 | 62,413 | May 21, 2020, 01:40 PM |
| Smith Kirin | Director | Dec 27, 2019 | Option Exercise | $6.00 | 1,000 | 6,000 | 16,935 | Dec 31, 2019, 12:48 PM |
| CRAWFORD MATTHEW V | Director | Dec 18, 2019 | Option Exercise | $1.43 | 326,489 | 466,879 | 1,583,657 | Dec 20, 2019, 01:15 PM |
| Rosen Steven | Director | Dec 18, 2019 | Option Exercise | $1.43 | 326,489 | 466,879 | 672,407 | Dec 20, 2019, 01:14 PM |
| Rosen Steven | Director | Dec 11, 2019 | Option Exercise | $2.50 | 100,000 | 250,000 | 420,918 | Dec 13, 2019, 02:33 PM |
| CRAWFORD MATTHEW V | Director | Dec 11, 2019 | Option Exercise | $2.50 | 100,000 | 250,000 | 1,332,168 | Dec 13, 2019, 02:30 PM |
| CRAWFORD MATTHEW V | Director | Jul 09, 2019 | Option Exercise | $6.48 | 100,000 | 648,000 | 518,750 | Jul 11, 2019, 07:55 PM |
| CRAWFORD EDWARD F | 10% Owner | Jul 09, 2019 | Option Exercise | $6.48 | 100,000 | 648,000 | 403,750 | Jul 11, 2019, 07:53 PM |
| CRAWFORD EDWARD F | Director | Jun 18, 2019 | Option Exercise | $2.92 | 1,000 | 2,925 | 12,335 | Jul 01, 2019, 07:00 PM |
| HART GEORGE RICHARD | Vice President of Engineering | Jun 09, 2017 | Buy | $5.24 | 200 | 1,048 | 300 | Jun 12, 2017, 01:39 PM |
| Rosen Steven | Director | Sep 29, 2015 | Buy | $1.50 | 75,000 | 112,500 | 115,000 | Oct 01, 2015, 09:59 AM |
| CRAWFORD MATTHEW V | Director | Sep 29, 2015 | Buy | $1.50 | 75,000 | 112,500 | 115,000 | Oct 01, 2015, 09:55 AM |
| Rosen Steven | Director | Aug 20, 2012 | Option Exercise | $1.85 | 126,185 | 233,442 | 320,918 | Nov 12, 2014, 05:03 PM |
| CRAWFORD EDWARD F | Director | Oct 22, 2014 | Buy | $1.84 | 1,000 | 1,840 | 2,000 | Oct 30, 2014, 10:34 AM |
| CRAWFORD EDWARD F | Director | Oct 24, 2014 | Buy | $1.97 | 150 | 296 | 2,335 | Oct 30, 2014, 10:34 AM |
| CRAWFORD EDWARD F | Director | Oct 23, 2014 | Buy | $1.96 | 185 | 363 | 2,185 | Oct 30, 2014, 10:34 AM |
| Elliott Jennifer Aplin | Director | Dec 30, 2012 | Option Exercise | $1.85 | 112,752 | 208,591 | 127,411 | Jan 02, 2013, 02:59 PM |
| Elliott Jennifer Aplin | Director | Sep 10, 2012 | Buy | $1.30 | 9,665 | 12,564 | 14,659 | Sep 27, 2012, 03:41 PM |
| SLADE JANET H | Director | Mar 22, 2011 | Sale | $1.91 | 10,192 | 19,467 | 75,000 | Mar 22, 2011, 05:14 PM |
| BAUMAN ROBERT L | President and CEO | Mar 22, 2011 | Buy | $1.91 | 10,192 | 19,467 | 151,768 | Mar 22, 2011, 05:06 PM |
| SLADE JANET H | Director | Aug 12, 2010 | Sale | $4.00 | 5,000 | 20,000 | 85,192 | Aug 12, 2010, 01:51 PM |
| BAUMAN ROBERT L | CEO | Aug 12, 2010 | Buy | $4.00 | 5,000 | 20,000 | 136,576 | Aug 12, 2010, 01:42 PM |
| Owner | Relationship | Date | Transaction | Value($) |
| CRAWFORD EDWARD F | 10% Owner | Jan 15, 2021 | Buy | 493,017 |
| CRAWFORD EDWARD F | 10% Owner | Jan 15, 2021 | Buy | 561,005 |
| CRAWFORD EDWARD F | 10% Owner | Jan 15, 2021 | Buy | 4,977 |
| Smith Kirin | Director | Dec 09, 2020 | Option Exercise | 2,925 |
| Powers Brian E | Chief Executive Officer | May 24, 2020 | Option Exercise | 17,864 |
| Marek Kelly | Chief Financial Officer | May 24, 2020 | Option Exercise | 3,276 |
| Powers Brian E | Chief Executive Officer | May 20, 2020 | Option Exercise | 8,259 |
| Smith Kirin | Director | Dec 27, 2019 | Option Exercise | 6,000 |
| CRAWFORD MATTHEW V | Director | Dec 18, 2019 | Option Exercise | 466,879 |
| Rosen Steven | Director | Dec 18, 2019 | Option Exercise | 466,879 |
| Rosen Steven | Director | Dec 11, 2019 | Option Exercise | 250,000 |
| CRAWFORD MATTHEW V | Director | Dec 11, 2019 | Option Exercise | 250,000 |
| CRAWFORD MATTHEW V | Director | Jul 09, 2019 | Option Exercise | 648,000 |
| CRAWFORD EDWARD F | 10% Owner | Jul 09, 2019 | Option Exercise | 648,000 |
| CRAWFORD EDWARD F | Director | Jun 18, 2019 | Option Exercise | 2,925 |
| HART GEORGE RICHARD | Vice President of Engineering | Jun 09, 2017 | Buy | 1,048 |
| Rosen Steven | Director | Sep 29, 2015 | Buy | 112,500 |
| CRAWFORD MATTHEW V | Director | Sep 29, 2015 | Buy | 112,500 |
| Rosen Steven | Director | Aug 20, 2012 | Option Exercise | 233,442 |
| CRAWFORD EDWARD F | Director | Oct 22, 2014 | Buy | 1,840 |
| CRAWFORD EDWARD F | Director | Oct 24, 2014 | Buy | 296 |
| CRAWFORD EDWARD F | Director | Oct 23, 2014 | Buy | 363 |
| Elliott Jennifer Aplin | Director | Dec 30, 2012 | Option Exercise | 208,591 |
| Elliott Jennifer Aplin | Director | Sep 10, 2012 | Buy | 12,564 |
| SLADE JANET H | Director | Mar 22, 2011 | Sale | 19,467 |
| BAUMAN ROBERT L | President and CEO | Mar 22, 2011 | Buy | 19,467 |
| SLADE JANET H | Director | Aug 12, 2010 | Sale | 20,000 |
| BAUMAN ROBERT L | CEO | Aug 12, 2010 | Buy | 20,000 |