Tesla is offering CEO Elon Musk an unprecedented pay package worth up to $1 trillion if he helps the electric vehicle maker reach specific milestones over the next decade.

In a securities filing submitted Friday, the company’s board plans to give Musk more than 423 million additional shares in 12 batches. To obtain the first award, the chief executive would need to double Tesla’s current market value of $1.1 trillion. Musk’s compensation plan is contingent on Tesla reaching $8.5 trillion in market value by the end of the next decade.