My company repriced their options and the price dropped. Let's say the price went from $5 to $2 (not actual numbers).
I'd early-exercised 75% of my grant at $5 and (later) exercised the remaining portion at $2.
I'll be leaving the company; and they'll be unwinding half of the grant, so I'll get some money back, but now the question is: Do they pay me back from the $5 shares or the $2 shares?
Does the law require one or the other? Or is it up to them?