| Symbol | Relationship | Date | Transaction | Cost | # Shares | Value($) | Total Shares | Form 4 |
| NSYS | CFO | Dec 24, 2020 | Buy | $6.02 | 5,803 | 34,913 | 50,000 | Mar 30, 2022, 06:26 PM |
| NSYS | CFO | Jun 29, 2021 | Buy | $8.62 | 21,595 | 186,073 | 44,197 | Jul 01, 2021, 05:26 PM |
| NSYS | CFO | Dec 28, 2020 | Buy | $6.23 | 14,636 | 91,188 | 19,197 | Dec 29, 2020, 06:04 PM |
| NSYS | CFO | Dec 23, 2020 | Buy | $5.66 | 2,034 | 11,513 | 4,561 | Dec 28, 2020, 05:04 PM |
| NSYS | CFO | Dec 22, 2020 | Buy | $5.38 | 2,527 | 13,604 | 2,527 | Dec 23, 2020, 04:49 PM |
| Symbol | Relationship | Date | Transaction | Value($) |
| NSYS | CFO | Dec 24, 2020 | Buy | 34,913 |
| NSYS | CFO | Jun 29, 2021 | Buy | 186,073 |
| NSYS | CFO | Dec 28, 2020 | Buy | 91,188 |
| NSYS | CFO | Dec 23, 2020 | Buy | 11,513 |
| NSYS | CFO | Dec 22, 2020 | Buy | 13,604 |