LONDON (ShareCast) - (ShareCast News) - Tullow Oil (LSE: TLW.L - news) director Jeremy Wilson has increase his in the company, hours after it posted a $1.09bn (£752.6m) loss for 2015. Wilson (Oslo: WILS.OL - news) purchased 30,000 shares for nearly £44,000 in a bid to give the market confidence about the company's future. It (Other OTC: ITGL - news) takes his total holding to 45,000 shares, a stake of 0.005%.