But Keith only had 2M common shares (60M are in the hands of MZ and his wifes business). So if the SS given by the TA is accurate then these 2M would come to end fairly quickly now (90 day trading average is ~40k; thats like 3.6M since March).
Without facts your speculation does a disservice to the individual whose initials you posted. It is unlikely that any insider has been dumping. Insider advantage is a serious offense you are speculating on. The only possible conclusion from trading these last months is that one or more individuals have been selling to willing buyers.