There is a specific california law which pierces the corporate veil specifically for unpaid wages.
https://hunterpylelaw.com/2021/02/alter-ego-piercing-the-cor...
https://hunterpylelaw.com/2021/02/alter-ego-piercing-the-cor...
Even if you can't make the argument that they could or should have known that the company was unhealthy, I think the argument can be made that the individuals who are missing base salary deserve to have that paid even if it requires clawing back some extraordinary compensation for executives.