| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| Gates Frontier, LLC | 5.6% | 1.04M | 1.04M | 0 | /s/ Alan Heuberger | Attorney-in-fact for Michael Larson, Manager | |
| William H. Gates III | 5.6% | 1.04M | 1.04M | 0 | /s/ Alan Heuberger | Attorney-in-fact |