| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| Sentient Global Resources Fund III, LP | 10.18% | 3.86M | 0 | 3.91M | /s/ Mike de Leeuw | Mike de Leeuw, Director | 0001445130 |
| Sentient Executive GP III, Limited | 10.18% | 3.86M | 0 | 3.91M | /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. | 9.19% | 3.51M | 0 | 3.55M | /s/ Mike de Leeuw | Mike de Leeuw, Director | 0001520861 |
| Sentient Executive GP IV, Limited | 9.19% | 3.51M | 0 | 3.55M | /s/ Mike de Leeuw | Mike de Leeuw, Director | 0001532092 |