The Form 4 says the sale is to pay taxes look at the FN. This is a public document.
https://www.sec.gov/Archives/edgar/d...X03/rdgdoc.xml
And Dave it does look like he has a trading plan.
"Explanation of Responses:
1. Sale of shares under 10(b)5-1 Plan to satisfy withholding taxes on shares that vested on June 30, 2019."
Rovell should have checked his facts. There is plenty IMO to fault Joe for these days but dumping stock is not one of them.