Mandy Gradden, a non-executive director of SDL, the FTSE 250 information management firm, bought up 7,500 shares on Thursday, just over a week after the company unveiled a 20 per cent leap in first-half revenues. Gradden's purchase, in which she bought the shares at 658p each for a total of £49,350, marks her only holding in the group. Earlier this month, SDL reported revenues of £133.6m, with over the half the gain due to its purchase of marketing firm Alterian. Pre-tax profits were up 4% to £16.4m with earnings per ordinary share rising 2% to 15.63p. However, the company said the uncertainty of the global macro-economic outlook has created "a degree of caution" in some of the markets it operates in. Top Director BuysSDL (SDL) Director name: Miss Mandy GraddenAmount purchased: 7,500 @ 658.00p Value: £49,350The Real Good Food Company (RGD) Director name: Mr Peter Cecil SalterAmount purchased: 50,000 @ 46.00p Value: £23,0004Imprint Group (FOUR) Director name: Mr Stephen GrayAmount purchased: 5,000 @ 300.00p Value: £15,000Plant Health Care (PHC) Director name: Mr Samuel A WauchopeAmount purchased: 10,000 @ 105.00p Value: £10,500Plant Health Care (PHC) Director name: Mr David BuckeridgeAmount purchased: 10,000 @ 105.00p Value: £10,500Top Director SellsBritish American Tobacco (BATS) Director name: Mrs Christine Morin-PostelAmount sold: 1,700 @ 3,307.25p Value: £56,223