Sir Ron Brierley, a non-executive director of Guinness Peat Group (GPG) sold a massive chunk of shares in the investment holding company this week.The company announced on Friday morning that Brierley sold five million shares in the company at a price of A$0.475 (31.04p), earning himself around A$2.38m (around £1.55m).The sales took his stake down to just under 37m shares, representing 2.33% of the company's total voting rights.Brierley, a well-known New Zealand investor, joined GPG in 1990 and was running as Chairman until 2010.The company, listed in London, Australia and New Zealand, invests in a number of businesses, mainly in Europe and Australasia. Top Director BuysFerrum Crescent Ltd NPV (DI) (FCR) Director name: Mr Robert W HairAmount purchased: 2,650,808 @ 3.33p Value: £88,272Ferrum Crescent Ltd NPV (DI) (FCR) Director name: Mr Edward F G NealonAmount purchased: 1,039,532 @ 3.33p Value: £34,616Bullabulling Gold Limited (DI) (BGL) Director name: Mr Peter John Mansell Amount purchased: 450,000 @ 5.94p Value: £26,730Spirax-Sarco Engineering (SPX) Director name: Mr Nicholas Anderson Amount purchased: 1,525 @ 2,267.79p Value: £34,584Brooks Macdonald Group (BRK) Director name: Mr Jonathan GumpelAmount purchased: 2,286 @ 1,305.00p Value: £29,832Brooks Macdonald Group (BRK) Director name: Mr Chris A MacDonaldAmount purchased: 2,286 @ 1,305.00p Value: £29,832Brooks Macdonald Group (BRK) Director name: Mr Richard SpencerAmount purchased: 2,000 @ 1,305.00p Value: £26,100Brooks Macdonald Group (BRK) Director name: Mr Andrew William ShepherdAmount purchased: 1,904 @ 1,305.00p Value: £24,847F&C Asset Management (FCAM) Director name: Mr Edward BramsonAmount purchased: 25,000 @ 98.88p Value: £24,720Northern Petroleum (NOP) Director name: Dr Rex William GaisfordAmount purchased: 50,000 @ 48.75p Value: £24,375Top Director SellsGuinness Peat Group (GPG) Director name: Sir Ronald A BrierleyAmount sold: 5,000,000 @ 31.04p Value: £1,552,000Dairy Farm International Holdings Ltd. (Singapore) (DFI) Director name: Mr Ronald J FlotoAmount sold: 11,700 @ $11.46 Value: $134,064BC