Excuses keep piling up. .. So if you do the math Abe always sells a lot... it's always been a problem.
What ever his reasons are for selling (and I would like to remind you all that unless he himself told you, then you don't know) why do you view this as a problem? Profits are profits. That's the entire purpose of owning stocks, regardless of how you came in to possession of them.
Is the glass half full or half empty. He sells and I don't see it as a problem at all. Maybe the glass is just too big and all of this is nonsense. The stock price doesn't seem to mind if he sells, at least not lately.
Don't listen to speculation. Stick to the facts.
“We are like farmers chopping down the fence for fuel when we should be using Nature's inexhaustible sources of energy. I'd put my money on the sun. I hope we don't have to wait until oil and coal run out before we tackle that”. — Thomas Edison