This is just fact as reported by the AFR on 7/6/18 at 7.30PM by Myriam Robin.
"Asked why he was selling, Eckhof just said there was a window where all news had been disclosed and he had personal financial needs: "Would have loved to sell some at 30¢ like all the other shareholders, but as a director there are not [many] windows available," he told us over email."