The Group Chief Executive of defence group Chemring has added a batch of shares worth £20,150 to his stake. Michael Flowers, who was appointed to his current role last month, paid 201.50p for each of the 10,000 shares, all of which were acquired in his wife's name. Flowers replaced Mark Papworth following a disappointing half year performance, which saw the group post wider half-year losses as end markets remained "challenging".The company also cautioned that foreign exchange headwinds would continue to have an impact on its second-half performance, although its outlook for the full year remained "broadly unchanged".Flowers has 13 years of experience in senior management positions within the defence industry. Top Director BuysAssociated British Foods (ABF) Director name: Mr George G WestonAmount purchased: 63,100 @ 2,909.00p Value: £1,835,579TVC Holdings (TVCH) Director name: Mr John TraceyAmount purchased: 1,440,092 @ 4.52p Value: £65,092TXO (TXO) Director name: Mr Timothy BaldwinAmount purchased: 20,500,136 @ 0.20p Value: £41,000Chemring Group (CHG) Director name: Mr Michael Flowers Amount purchased: 10,000 @ 201.50p Value: £20,150Sefton Resources Inc. (SER) Director name: Mr Tom MilneAmount purchased: 10,076,741 @ 0.16p Value: £16,123Volution Group (WI) (FAN) Director name: Mr Anthony J ReadingAmount purchased: 10,817 @ 138.25p Value: £14,955Leyshon Energy Limited (DI) (LEN) Director name: Mr Kim Michael Sebastian Howell Amount purchased: 300,000 @ 4.95p Value: £14,850Access Intelligence (ACC) Director name: Mr Michael JacksonAmount purchased: 500,000 @ 2.90p Value: £14,500Sefton Resources Inc. (SER) Director name: Mr Mark R. SmithAmount purchased: 8,971,323 @ 0.16p Value: £14,354Sefton Resources Inc. (SER) Director name: Dr Keith A MorrisAmount purchased: 8,665,831 @ 0.16p Value: £13,865Top Director SellsAssociated British Foods (ABF) Director name: Mr George G WestonAmount sold: 65,202 @ 2,885.00p Value: £1,881,078Associated British Foods (ABF) Director name: Mr George G WestonAmount sold: 63,100 @ 2,909.00p Value: £1,835,579Associated British Foods (ABF) Director name: Mr George G WestonAmount sold: 60,500 @ 2,901.00p Value: £1,755,105Associated British Foods (ABF) Director name: Mr George G WestonAmount sold: 53,943 @ 2,846.00p Value: £1,535,218Clontarf Energy (CLON) Director name: Mr John J TeelingAmount sold: 16,000,000 @ 0.75p Value: £120,000NR