RE:Is it possible to wipe out class B and not class A? class b shares are common shares bankruptcy yes they are worthless. Class A shares are common shares they are gone also. the only difference is B 1 vote A 15 votes mostly held by family I don't think bombardier would go bankrupt. If anything happens its a roll back of B shares, and or dividend cut on the A&B. The family are noted to protect their interests and screw investors. So they would likely keep the A shares as it gives them control. If Bombardier burn through the cash and the credit line they will have a debt of 9.4 billion market cap of 6 billion. so there is no equity.