Openheimer's sale was to cover tax obligations and he informed KRY well in advance. He tried to time his sale after financing and earnings results which was a big disadvantage to him (back then) in support of KRY. It had nothing to do with what happened and only turned out to be fortuitous after 4/30.

Richard Marshall's sale was an automatic sale on margin call. He is leveraged as much as he can but when he got a margin call his account had shares liquidated which were selected by his broker not by him.

Both of these reasons were reported to shareholders on officila filings.