Andrew Harrison, the divisional chief operating officer of Travis Perkins, has reduced his stake in the group with the sale of 5,200 shares.The builder's merchant and home improvement retailer said Harrison on Tuesday traded in 3,100 shares at 1,606.50p a piece and a further 2,100 at 1,603.61p each on behalf of his wife.Following the sale his beneficial interest stands at 90,710.The group last week said its like-for-like sales continued to slow in the third quarter as it saw a "very challenging" plumbing and heating market.The company faced some tough comparative figures from the year before, including robust third quarter results, but still grew total sales grew 6.9% and like-for-like sales 5.7%, though this was down from the 10.2% for the first six months of the year.Chief executive John Carter said the results demonstrated "encouraging early progress" in the implementation of management's new strategy.Top Director BuysBarr (A.G.) (BAG) Director name: Mr John R NicolsonAmount purchased: 5,500 @ 583.00p Value: £32,065Shanta Gold Ltd. (SHG) Director name: Mr Anthony DurrantAmount purchased: 200,000 @ 9.75p Value: £19,500