The deputy chief officer and chief financial officer of Howden Joinery Group and his wife sold £2.87m worth in shares in the company.Mark Robson sold 137,453 shares for an individual price of 465.1p while his wife Rachel Robson sold 482,434 shares for 462.8p each, bringing home a total of £2.87m.Following the transaction, Mark Robson holds both directly and indirectly 1.846m shares in the kitchen and joinery products supplier.The company reported strong results for 2014 back in February, with sales topping £1bn for the first time.Chief executive Matthew Ingle said at the time: "We have identified the need for increased investment in the business. This is to ensure that we can take advantage of the growth opportunities that we now foresee, and to address the challenges of a more complex market and security of supply."Top Director BuysVinaLand Ltd (VNL) Director name: Mr Charles Isaac Amount purchased: 400,000 @ $0.52 Value: $207,600VinaLand Ltd (VNL) Director name: Mr Michel CasselmanAmount purchased: 350,000 @ $0.52 Value: $182,000Ferrexpo (FXPO) Director name: Mr Bert NackenAmount purchased: 20,000 @ 67.70p Value: £13,540Arian Silver Corporation (DI) (AGQ) Director name: Mr James (Jim) T. WilliamsAmount purchased: 20,000 @ 27.05p Value: £5,410Top Director SellsHowden Joinery Group (HWDN) Director name: Mr Mark RobsonAmount sold: 482,434 @ 462.80p Value: £2,232,705Howden Joinery Group (HWDN) Director name: Mr Mark RobsonAmount sold: 137,453 @ 465.10p Value: £639,294Interserve (IRV) Director name: Mr Bruce MelizanAmount sold: 77,895 @ 577.00p Value: £449,454Interserve (IRV) Director name: Mr Steven DanceAmount sold: 77,895 @ 577.00p Value: £449,454Nichols (NICL) Director name: Mr John NicholsAmount sold: 30,000 @ 1,190.00p Value: £357,000Interserve (IRV) Director name: Mr Adrian M RingroseAmount sold: 55,668 @ 577.00p Value: £321,204Interserve (IRV) Director name: Mr Tim HaywoodAmount sold: 40,086 @ 577.00p Value: £231,296Interserve (IRV) Director name: Mr Dougie SutherlandAmount sold: 29,741 @ 577.00p Value: £171,606Wynnstay Group (WYN) Director name: Mr B Paul RobertsAmount sold: 2,827 @ 490.00p Value: £13,852