| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| Sentient Global Resources Fund III, LP | 0% | 0 | 0 | 0 | /s/ Mike de Leeuw | Mike de Leeuw, Director | 0001445130 |
| Sentient Executive GP III, Limited | 0% | 0 | 0 | 0 | /s/ Mike de Leeuw | Mike de Leeuw, Director | 0001445132 |
| Sentient GP III, L.P. | 0% | 0 | 0 | 0 | /s/ Mike de Leeuw | Mike de Leeuw, Director | 0001445131 |
| Sentient GP IV, L.P. | 0% | 0 | 0 | 0 | /s/ Mike de Leeuw | Mike de Leeuw, Director | 0001580229 |
| Sentient Global Resources Fund IV, L.P. | 6.58% | 3.51M | 0 | 3.51M | /s/ Mike de Leeuw | Mike de Leeuw, Director | 0001520861 |
| Sentient Executive GP IV, Limited | 6.58% | 3.51M | 0 | 3.51M | /s/ Mike de Leeuw | Mike de Leeuw, Director | 0001532092 |