Nik Storonsky wants a bigger slice of Revolut, and he has picked an ambitious price. The cofounder and chief executive is in talks over a new share award, the Financial Times reported. It would grow his stake if the fintech reaches a $500 billion valuation.

Storonsky owns about 29% of Revolut today. The new package would unlock shares in stages as the valuation climbs, the same structure Elon Musk uses at Tesla. It is not yet clear whether it adds to his existing deal or replaces it.

That existing deal is already generous. Storonsky said in December it would lift his stake to around 40% at a $200 billion valuation.

Why $500bn is a different number

The target is the eye-catching part. Revolut’s most recent secondary share sale valued it at $115 billion, at $2,017 a share, which put Storonsky’s holding above $36 billion. A $500 billion valuation would be more than four times that.