Berendsen non-executive director Iain Ferguson has spent £75,000 on shares in the textile service business formerly known as Davis Service Group.He bought 15,000 shares at 496p a time and now has 40,000.Ferguson, a former chief executive of the sugar firm Tate & Lyle, joined Berendsen last year.Berendsen said last month that its operating margin has shown an encouraging improvement so far in 2011. Revenue in the first quarter of 2011 was 2% ahead of the corresponding period of last year, in line with management expectations. The first quarter also saw lower interest costs as a result of the group's strong cash flow, and this has led to a significant increase in profit before tax, as anticipated by the board. Berendsen's markets continued to improve steadily, with the Nordic region - particularly Sweden - seeing robust growth compared to the prior year. Top Director BuysNorseman Gold (NGL) Director name: Mr Barry CahillAmount purchased: 505,000 @ 16.56p Value: £83,628Zenergy Power (ZEN) Director name: Mr Simon CleaverAmount purchased: 600,784 @ 13.00p Value: £78,102Berendsen (BRSN) Director name: Mr Iain FergusonAmount purchased: 15,000 @ 496.00p Value: £74,400Witan Inv Trust (WTAN) Director name: Mr Andrew L C BellAmount purchased: 10,000 @ 518.00p Value: £51,800Hydrogen Group (HYDG) Director name: Mr Tim SmeatonAmount purchased: 58,000 @ 85.00p Value: £49,300Hydrogen Group (HYDG) Director name: Mr Ian TempleAmount purchased: 58,000 @ 85.00p Value: £49,300JPMorgan Emerging Markets Inv Trust (JMG) Director name: Mr Nigel KennyAmount purchased: 3,500 @ 581.50p Value: £20,352AG Barr (BAG) Director name: Mr Alex B C ShortAmount purchased: 1,286 @ 1,378.00p Value: £17,721Optare (OPE) Director name: Mr Peter PhillipsAmount purchased: 500,000 @ 2.90p Value: £14,500Charles Taylor Consulting (CTR) Director name: Mr John S M RoweAmount purchased: 10,000 @ 130.00p Value: £13,000Top Director SellsDairy Farm International Holdings Ltd. (Singapore) (DFI) Director name: Mr Michael KokAmount sold: 332,864 @ $9.59 Value: $3,192,865British American Tobacco (BATS) Director name: Mr Ben StevensAmount sold: 53,098 @ 2,723.57p Value: £1,446,161Ruukki Group (DI) (RKKI) Director name: Mr Markku KankaalaAmount sold: 200,000 @ 141.01p Value: £282,020Victoria Oil & Gas (VOG) Director name: Mr Philip RandAmount sold: 1,500,000 @ 5.09p Value: £76,350Datatec Ltd. (DI) (DTC) Director name: Mr Ivan DittrichAmount sold: 15,491 @ 342.50p Value: £53,057