(Sharecast News) - Upstream natural gas producer Valeura Energy's chief executive officer Sean Guest acquired 20,000 ordinary shares in the dual-listed outfit on Thursday.Guest, who previously worked for Shell in the Netherlands, Australia and Malaysia, purchased the shares at an average price of CAD $2.432 per share, for a total pound equivalent of £28,316.Canaccord initiated coverage on Valeura, which is listed on both the Canadian and London stock exchanges, at 'buy' in April, with a target price of 560p.As of 1620 BST, Valeura shares had picked up 1.38% to 147p.Top Director BuysValeura Energy Inc NPV (DI) (VLU)Director name: Dr. Sean GuestAmount purchased: 20,000 @ 141.58pValue: £28,316 Phoenix Global Resources (PGR)Director name: Mr Sir Michael RakeAmount purchased: 130,000 @ 20.68pValue: £26,884 Schroder Asian Total Return Investment Company (ATR)Director name: Mrs Sarah MacAulayAmount purchased: 5,775 @ 345.74pValue: £19,966