AQB has two major shareholders (as of 4/6/19): https://www.sec.gov/Archives/edgar/data/1603978/000160397817000010/a2017proxystatement.htm (page 16) • XON 68.6% stake • ABT 8.3% stake The total number of basic shares outstanding is 8.88M, which is unchanged since XON’s purchase of 2.42M shares in Jan 2017 (#msg-128099078).