Driver said on Thursday that its chief executive David Webster purchased 50,000 shares in the construction consultancy at 55p each, spending a total of £27,500.Following the transaction, Webster holds 2.05m shares in the group, which represents about 6.6% of the issued share capital.On Tuesday, the group posted a £2.1m loss before tax for the first half of this year, compared with a profit of £1.3m profit in 2014, as a result of its operations in Africa, Asia and the Middle East.Chairman Steve Norris said that the first half of the financial year has been a period of investment and change for the group, while recognising the need to transition from the delivery of one growth strategy to the implementation of the company's new plan to take the business forward.Top Director BuysBluefield Solar Income Fund Limited (BSIF) Director name: Mr Laurence McNairnAmount purchased: 200,000 @ 109.75p Value: £219,500Croda International (CRDA) Director name: Ms Anita FrewAmount purchased: 1,500 @ 2,901.00p Value: £43,515Croda International (CRDA) Director name: Ms Anita FrewAmount purchased: 1,000 @ 2,889.83p Value: £28,898Driver Group (DRV) Director name: Mr David WebsterAmount purchased: 50,000 @ 55.00p Value: £27,500Top Director SellsBTG (BTG) Director name: Mr Rolf SoderstromAmount sold: 35,225 @ 704.88p Value: £248,294BTG (BTG) Director name: Ms Dame Pamela Louise MakinAmount sold: 25,671 @ 704.88p Value: £180,950Titon Holdings (TON) Director name: Mr Tyson Neil AndersonAmount sold: 34,950 @ 78.00p Value: £27,261