>>16086577 lb Saudi prince who publicly rejected Elon Musk's offer to buy Twitter sold all his personal shares in 2019.
Also on that list is Steve Ballmer selling his shares in 2018-27,052,178 shares
Ex Mr. Softy CEO and current owner of LA Clippers
probably not filed/updated yet
They can wait a long time before filing that/those purchases and/or sales
Seen sales/buys in some equities up to 6 months after they occur filed so not unusual