Who was on the buy side - at that time there was many times there were T-trades - which are block trades arranged with a MM - so it could possibly be MMs that bought at a discount.
But foolish OTC novice investors were caught up in the volume with paid pumpers telling everyone last time to buy cheapies and HUMBL was filled with paid pumpers yelling this is a moonshot - this is going to create generalization wealth - but it created was paupers dragging their blanket back to Mom and Dad and they start collecting cans again.
Since the stock was gifted to the owners it really didn't matter at what price they sold - they didn't believe the cheapies nonsense and sold at a discount just to get out and make some money. So Foote and his parents and Sharp are all guilty of securities fraud - insider trading.