Mark Zuckerberg selling a huge amount of FB in 2021 What does it mean? https://finance.yahoo.com/quote/FB/insider-transactions?p=FB
It means he wants to buy a new toy for cash, like a 100-foot yacht or private island. Or a flight on a SpaceX rocket.
He owned 11.2M shares in 2019 back when the stock was at $180. Now he owns 2M at $336. He slashed his stake by 82%. Perhaps he knows governments will come after his empire at some point and he wants out
Maybe he needs money and selling the share, but I think not all shares will for sale, FB still become a money machine for him