I have a potentially silly question: When you buy stock in a public company you have specific protection from liability -- the worst that can happen is you los

I have a potentially silly question: When you buy stock in a public company you have specific protection from liability -- the worst that can happen is you lose your investment. As an angel investor the worst case is worse, in theory. If the company racks up huge debt (maybe by getting sued) then you as a part owner could be on the hook for that. Is that worth worrying about in practice?