| 4 | | Supplemental Agreement for work within scope | $184.0k | 9/5/17 |
| 3 | | Supplemental Agreement for work within scope | $390.7k | 11/24/14 |
| 2 | | Supplemental Agreement for work within scope | $82.2k | 8/20/14 |
| 1 | | Supplemental Agreement for work within scope | $0 | 5/8/14 |
| Not listed | | Not listed | $2.8m | 9/30/13 |