Brian Count, chairman of the alternative energy group Ceres Power, has added to his stake in the company with the purchase of nearly £60,000 worth of shares.The company reported that Mrs JE Count a 'related party' bought 50,000 shares at 114.8p a time, taking his holding in the group to 257,850 shares, which is about 0.3% of the company.Last month, the company posted a an interim loss that grew to £5.9m from £3.3m a year earlier as revenue slumped 39%, blamed on the £2m Alpha milestone completion payment from British Gas last June being recognised as revenue when earned, based on costs incurred over the Beta and Gamma phases.Count said he was pleased to report significant progress during the period, in which it secured its first international mains gas CHP commercial programme, with Bord Gáis for the Irish market.Top Director BuysChina Medical System Holdings (CMSH) Director name: Mr Ki Fat HuiAmount purchased: 263,833 @ 488.50p Value: £1,288,824Daisy Group (DAY) Director name: Mr Anthony Riley Amount purchased: 63,210 @ 92.50p Value: £58,469Ceres Power Holdings (CWR) Director name: Mr Brian CountAmount purchased: 50,000 @ 114.76p Value: £57,380Top Director SellsFirst Quantum Minerals (FQM) Director name: Mr Philip PascallAmount sold: 4,500 @ 5,119.78p Value: £230,390Dairy Farm International (Singapore) (DFI) Director name: Mr Howard Leonard MowlemAmount sold: 27,600 @ $7.03 Value: $193,940First Quantum Minerals (FQM) Director name: Mr Philip PascallAmount sold: 1,500 @ 5,121.07p Value: £76,816First Quantum Minerals (FQM) Director name: Mr Philip PascallAmount sold: 1,300 @ 5,174.52p Value: £67,269First Quantum Minerals (FQM) Director name: Mr Philip PascallAmount sold: 1,200 @ 5,180.96p Value: £62,172First Quantum Minerals (FQM) Director name: Mr Philip PascallAmount sold: 1,082 @ 5,123.00p Value: £55,431First Quantum Minerals (FQM) Director name: Mr Philip PascallAmount sold: 1,000 @ 5,190.62p Value: £51,906First Quantum Minerals (FQM) Director name: Mr Philip PascallAmount sold: 1,000 @ 5,143.61p Value: £51,436First Quantum Minerals (FQM) Director name: Mr Philip PascallAmount sold: 1,000 @ 5,113.34p Value: £51,133First Quantum Minerals (FQM) Director name: Mr Philip PascallAmount sold: 800 @ 5,188.05p Value: £41,504