| STONEPINE CAPITAL, L.P. |
| 10 percent owner |
| P-Purchase |
| Acquired |
| 5,202 |
| $0.69 |
| 9 Dec 2019 | STONEPINE CAPITAL, L.P. | 10 percent owner | P-Purchase | Acquired | 4,500 | $0.70 |
| 9 Dec 2019 | STONEPINE CAPITAL, L.P. | 10 percent owner | P-Purchase | Acquired | 40 | $0.70 |
| 9 Dec 2019 | STONEPINE CAPITAL, L.P. | 10 percent owner | P-Purchase | Acquired | 5,160 | $0.70 |
| 26 Nov 2019 | STONEPINE CAPITAL, L.P. | 10 percent owner | P-Purchase | Acquired | 89,845 | $0.75 |
| 16 Oct 2019 | STONEPINE CAPITAL, L.P. | 10 percent owner | P-Purchase | Acquired | 100,000 | $0.65 |