The Chairman of CLS Holdings cut his sizeable stake in the company this week while the Vice Chairman chose to increase his holding, just two days after the property group impressed the market with its first-half report.CLS said on Friday that Sten Mortstedt, the Chairman who established the firm in 1987, sold 60,000 shares through his family and charity trust at 1,210p each, raising a total of £726,000.The sale trimmed his total interest in CLS to 22.66m shares, equal to a 53.04% stake.On the same day (Thursday), Vice Chairman and former Chief Executive Henry Klotz bought the same amount of shares at the same price, spending £726,000. His holding increased to 71,395 shares (0.17%).The transactions could after a +50% rise in the share price so far this calendar year.CLS, which has a market cap of over £500m, said on Tuesday that pre-tax profit in the first half rose 6.6% to £22.7m, while net assets per share were up 6.0% at 1,223.7p.Mortstedt said in a statement: "This is a good time in the cycle to be buying property. The group continues to benefit from low interest rates and favourable rental markets, which remain solid throughout our regions.In other director dealings, Bruce Van Saun, the Finance Director of state-backed lender Royal Bank of Scotland (RBS), sold nearly 0.4m pounds-worth of shares in the company this week, it was revealed on Friday.Van Saun sold a total of 115,000 shares at 340.21p each on August 15th, making £391,242.Top Director BuysCLS Holdings (CLI) Director name: Mr E Henry KlotzAmount purchased: 60,000 @ 1,210.00p Value: £726,000Berkeley Group Holdings (The) (BKG) Director name: Mr Robert C G PerrinsAmount purchased: 4,619 @ 2,154.00p Value: £99,493Berkeley Group Holdings (The) (BKG) Director name: Mr Robert C G PerrinsAmount purchased: 1,849 @ 2,152.00p Value: £39,790Princess Private Equity Holding Ltd. (PEY) Director name: Mr Fergus DunlopAmount purchased: 4,000 @ € 6.57 Value: € 26,280Hammerson (HMSO) Director name: Mr Gwyn Burr Amount purchased: 5,000 @ 501.00p Value: £25,050Robert Walters (RWA) Director name: Mr Brian McArthur-MuscroftAmount purchased: 7,140 @ 280.25p Value: £20,010Coalfield Resources (CRES) Director name: Mr Jonson CoxAmount purchased: 300,000 @ 6.60p Value: £19,800Top Director SellsCLS Holdings (CLI) Director name: Mr Sten A MortstedtAmount sold: 60,000 @ 1,210.00p Value: £726,000Synthomer (SYNT) Director name: Mr Alexander G CattoAmount sold: 200,000 @ 230.00p Value: £460,000Royal Bank of Scotland Group (RBS) Director name: Mr Bruce Van Saun Amount sold: 115,000 @ 340.21p Value: £391,242Share (SHRE) Director name: Mr Iain Paul WallaceAmount sold: 52,589 @ 21.00p Value: £11,044BC