| director, 10 percent owner: |
| S-Sale |
| Disposed |
| 40,000 |
| $0.00 |
| 3 Aug 2020 | NGP Switchback, LLC | 10 percent owner | S-Sale | Disposed | 40,000 | $0.00 |
| 3 Aug 2020 | Kubis Raymond R | director | P-Purchase | Acquired | 40,000 | $0.00 |
| 27 Jul 2020 | Kubis Raymond R | director | Disposed | 0 | $0.00 |