The share price for AIM-listed US onshore oil and gas exploration company Magnolia Petroleum rose slightly on Monday following an announcement of director's dealings.The Chief Executive Officer and two non-executive directors purchased £14,500, £24,650 and £5,800 worth of shares respectively worth a total of £44,950.The news comes days after Magnolia announced that it had invested in two wells located in North Dakota.Magnolia's share price was up 1.71% to 2.97p at 10:48 on Monday.MF