Alex Carstairs Mr. Carstairs also chose to purchase 60,000 shares at around $1.06 on May 27 while having 200,000 options sitting at $0.55. Mr. Carstairs became a director in March 2014 and has held 1,130 shares since he joined the board. He now holds 61,130 shares. For someone who was obviously not in a rush to buy, it is again interesting that he chose to buy in the open market at almost twice the price he could have purchased shares by exercising his options.