Remember me how many executives from GS got into prison for the 1MDB saga
I would not be surprised to see a class-action from investors in addition to this fine.
I said in theory, because while that would be sweet, in practice our law is so complex that even huge CEO with tons of lawyers cannot really be sure he is abiding it. If you want somebody guilty it's just a matter of time invested, especially with the amount of activity that is taken by a whole company.
On the other hand, civil penalties (like fines) don't have the same burden of proof, which is why you often see them in situations like these. They are easier to prove. They generally only require a "preponderance of the evidence" to prove.
The fine was $18Mn, the SEC press release says BMW raised $18Bn from investors.
Of course this is a quantitative perspective that is not shared by high concentration discretionary investors like Buffet. Buffet needs to pick stocks with low idiosyncratic risk because he is not being paid a risk premium for it.