| Symbol | Relationship | Date | Transaction | Cost | # Shares | Value($) | Total Shares | Form 4 |
| NES | EVP & Chief Financial Officer | Nov 08, 2018 | Buy | $10.35 | 1,613 | 16,695 | 3,000 | Nov 08, 2018, 04:57 PM |
| NES | EVP & Chief Financial Officer | Nov 07, 2018 | Buy | $10.23 | 387 | 3,959 | 1,387 | Nov 08, 2018, 04:57 PM |
| NES | EVP & Chief Financial Officer | Mar 14, 2018 | Buy | $19.90 | 1,000 | 19,900 | 1,000 | Mar 15, 2018, 06:02 AM |
| Symbol | Relationship | Date | Transaction | Value($) |
| NES | EVP & Chief Financial Officer | Nov 08, 2018 | Buy | 16,695 |
| NES | EVP & Chief Financial Officer | Nov 07, 2018 | Buy | 3,959 |
| NES | EVP & Chief Financial Officer | Mar 14, 2018 | Buy | 19,900 |