| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| SK Geo Centric Co., Ltd. | 2.3% | 3,928,571 | 0 | 3,928,571 | /s/ Ahnseop Choi | Ahnseop Choi Chief Executive Officer and President | |
| SK Innovation Co., Ltd. | 2.3% | 3,928,571 | 0 | 3,928,571 | /s/ Sangkyu Park | Sangkyu Park President & Chief Executive Officer |