(ShareCast News) - Industry veteran James Leahy has quit Forte Energy, citing personal reasons.Shares in AIM-listed Forte tumbled as the director said he was leaving with immediate effect.At 0809 BST shares in the Australia-based company had lost 6.91% to trade at 0.03p.Forte chairman Glenn Featherby thanked Leahy for his "valuable contribution over the past three years."