He has been partially selling since last year. He is still holding majority of his stake.

When people buy any shares and announce this on a forum, there are two possiblities:
1 They earn money
2 They lose money

If they earn money they will happily announce it.

In they lose money, one of the following will happen:
90% of the time: I sold the share at a profit in the past. The past can be a few days ago.
8% of the time: They don't want to talk about it anymore.
2% of the time: They say they sold it at a loss.