ITV's chairman increased his stake in the TV network one week after the group's acquisition of Boom Supervisory.Archie Norman acquired 11,784 shares at 266.69p each, spending a total of £31,427 in the transaction.Following the purchase, Norman, who has been the chairman of ITV since 2010, holds 1.3m shares in the company.Last week ITV bought Boom Supervisory, the holding group of production company Twofour, for £55m, as part of its strategy to strengthen its global content business.Managing director Kevin Lygo said at the time: "Great creative talent, fantastic content and brilliant production expertise are central to ITV Studios' strategy, so I'm delighted that the Twofour Group is joining our family of production companies as we continue to boost ITV Studios' growth in the UK and internationally."Top Director BuysEMED Mining Public Ltd. (EMED) Director name: Dr Jose N S LopezAmount purchased: 800,000 @ 4.75p Value: £38,000ITV (ITV) Director name: Mr Archie Norman Amount purchased: 11,784 @ 266.69p Value: £31,427Dunedin Income Growth Inv Trust (DIG) Director name: Mr Peter WoltonAmount purchased: 8,250 @ 249.75p Value: £20,604Hunters Property (HUNT) Director name: Mr Harry D HillAmount purchased: 28,908 @ 65.00p Value: £18,790Alliance Trust (ATST) Director name: Mr Katherine Garrett-CoxAmount purchased: 2,342 @ 491.00p Value: £11,499Top Director SellsThere were so sells todan