John Allwood, non-executive director of mobile phones seller Carphone Warehouse has rounded up his holding in the company to 10,000 shares.Allwood bought 6,500 shares at 303.9p each, at a cost of just under £20,000, as the shares hit a new 52-week low on Thursday.The company's share price has been hit this month by the decision to close its 'big-box' Best Buy stores in the UK and sell off its interest in Best Buy Mobile in the US.Not even the promise of returning a chunk of money to shareholders has been enough to reverse the downward path of the share price. Allwood joined the board of Carphone Warehoue in 2010. He is also a non-executive director of TalkTalk Telecom Group, the company that was demerged from Carphone Warehouse. He is also Group Finance Director of Mecom Group, the media group.Top Director BuysBanco Santander SA (BNC) Director name: Mr Francisco Luzon LopezAmount purchased: 9,524 @ 451.23p Value: £42,974Banco Santander SA (BNC) Director name: Mr Francisco Luzon LopezAmount purchased: 9,345 @ 462.12p Value: £43,185Iofina (IOF) Director name: Dr Chris E FayAmount purchased: 100,000 @ 20.00p Value: £20,000Carphone Warehouse Group (CPW) Director name: Mr John AllwoodAmount purchased: 6,500 @ 303.90p Value: £19,753Renold (RNO) Director name: Mr Brian TennerAmount purchased: 75,000 @ 26.10p Value: £19,575IGas Energy (IGAS) Director name: Mr John BlaymiresAmount purchased: 20,000 @ 51.25p Value: £10,250Top Director SellsShare Plc (SHRE) Director name: Mr Iain Paul WallaceAmount sold: 200,000 @ 21.00p Value: £42,000--jh