Questão jurídica principal
Whether the appellant is liable under Art. 52 AHVG for unpaid AHV contributions.
Decisão extraída
The appellant is liable as a grossly negligent managing director whose conduct caused the unpaid contributions.
Fundamentação extraída
He had a duty to ensure payment and could not rely on later-raised excuses; the factual findings supported wrongful conduct, fault, and adequate causation.