The Chairman of Advanced Computer Software this week sliced off 870,380 pounds-worth of shares from his stake, reducing it to 2.42m, the group announced after the close on Thursday. Michael Jackson disposed of exactly 1m shares in the healthcare and business management software, and said he made the sale for "personal reasons". Jackson, who took up the post of Chairman in 2008, was able to take advantage of the strong rise seen in the group's share price since the start of the year, during which time it has climbed from a low of 68p, to sell at 87.038p a piece.The disposal was made on Wednesday, the same day the company posted a 74% jump in group revenue to £99.1m, driven largely by the acquisition of CSH earlier this year, and a 7% rise in pre-tax profit. The group revealed it was "increasingly confident" of delivering good full year results and said it was in an "excellent" position to take advantage of further acquisition opportunities. Top Director BuysAstraZeneca (AZN) Director name: Mr Pascal SoriotAmount purchased: 23,981 @ 3,330.00p Value: £798,567Puricore (PURI) Director name: Mr Daniel Hegglin Amount purchased: 1,000,000 @ 45.00p Value: £450,000Symphony International Holdings Ltd. (SIHL) Director name: Mr Anil ThadaniAmount purchased: 500,000 @ $0.76 Value: $380,000Berkeley Group Holdings (The) (BKG) Director name: Mr David HowellAmount purchased: 1,200 @ 2,450.00p Value: £29,400Travis Perkins (TPK) Director name: Mr Robert M WalkerAmount purchased: 805 @ 1,845.00p Value: £14,852Arden Partners (ARDN) Director name: Mr Jonathan B KeelingAmount purchased: 25,000 @ 48.50p Value: £12,125NB Global Floating Rate Income Fund Limited Red C Shs GBP (NBCS) Director name: Mr Richard John BatteyAmount purchased: 10,000 @ 100.00p Value: £10,000NB Global Floating Rate Income Fund Limited Red C Shs GBP (NBCS) Director name: Mrs Sandra PlattsAmount purchased: 10,000 @ 100.00p Value: £10,000NB Global Floating Rate Income Fund Limited Red C Shs GBP (NBCS) Director name: Mr William FrewenAmount purchased: 10,000 @ 100.00p Value: £10,000Top Director SellsDotDigital Group (DOTD) Director name: Mr Peter A. SimmondsAmount sold: 2,000,000 @ 21.00p Value: £420,000DotDigital Group (DOTD) Director name: Mr Ian (Tink) TaylorAmount sold: 1,100,000 @ 21.00p Value: £231,000DotDigital Group (DOTD) Director name: Mr Simon C. BirdAmount sold: 1,100,000 @ 21.00p Value: £231,000Jarvis Securities (JIM) Director name: Mr Andrew J GrantAmount sold: 50,000 @ 400.00p Value: £200,000SpaceandPeople (SAL) Director name: Mr Martin KempAmount sold: 75,000 @ 112.25p Value: £84,188Informa (INF) Director name: Mr Peter RigbyAmount sold: 4,000 @ 555.00p Value: £22,200NR