There is already a well defined legal remedy that is used against regular people that commit financial crimes.
Treble damages are a legal remedy where a court multiplies a plaintiff's actual, proven compensatory damages by three.
This should be the bare minimum for corporations. Corporations are legal people but not actual people, they are soulless machines that seek profit, the only way to deter them from criminality is to make crime unprofitable. Anything less is inviting them to do crime and pay a fine because doing so generates a profit.