Hutchison China MediTech revealed on Wednesday its chairman and secretary bought some shares in the company.Executive director and chairman Simon To on Tuesday purchased 48,000 shares for 1385p each, spending £664,800 in the transaction.Furthermore, non-executive director and secretary Edith Shih bought 2,000 shares for the same price, which cost her £27,700.The same directors had purchased 10,000 shares each last Thursday. In total, Simon To spent £0.8m and Edith Shih spent £166,200.Following both purchases, Simon To holds now 127,000 shares and Edith Shih remains with 60,000 shares in the company.Top Director BuysHutchison China Meditech Ltd (HCM) Director name: Mr Simon ToAmount purchased: 48,000 @ 1,385.00p Value: £664,800Hutchison China Meditech Ltd (HCM) Director name: Mr Simon ToAmount purchased: 10,000 @ 1,385.00p Value: £138,500Hutchison China Meditech Ltd (HCM) Director name: Ms Edith ShihAmount purchased: 10,000 @ 1,385.00p Value: £138,500Botswana Diamonds (BOD) Director name: Mr John J TeelingAmount purchased: 9,756,098 @ 1.07p Value: £104,390HydroDec Group (HYR) Director name: Mr Andrew BlackAmount purchased: 1,000,000 @ 6.72p Value: £67,300HydroDec Group (HYR) Director name: Mr Andrew BlackAmount purchased: 750,000 @ 6.92p Value: £51,900Botswana Diamonds (BOD) Director name: Mr James FinnAmount purchased: 3,470,919 @ 1.07p Value: £37,139Hutchison China Meditech Ltd (HCM) Director name: Ms Edith ShihAmount purchased: 2,000 @ 1,385.00p Value: £27,700JPMorgan Brazil Inv Trust (JPB) Director name: Prof Victor Bulmer-ThomasAmount purchased: 43,750 @ 54.80p Value: £23,975HydroDec Group (HYR) Director name: Lord Colin MoynihanAmount purchased: 310,155 @ 6.60p Value: £20,470Top Director SellsCostain Group (COST) Director name: Mr Andrew WyllieAmount sold: 42,062 @ 315.00p Value: £132,495Costain Group (COST) Director name: Mr Anthony BickerstaffAmount sold: 28,123 @ 315.00p Value: £88,587