Non-Executive Director of Aggreko, Diana Layfield, has taken a stake in the group one month after it predicted its full-year results would be slightly higher than previous expectations. Layfield, who joined the board in May 2012, acquired 3,000 shares, paying 1,711p a piece for a total spend of £51,330. Last month, the temporary power supplier said group revenue for 2013 on an underlying basis was expected to increase 3% against the prior year. Trading profit was forecast to be at similar levels to the prior year, reported revenues for the year were expected to be around £1.57bn, similar to last year, and profit before tax and amortisation looked set to total at least £335m.The results won't be released until early March. Top Director BuysAggreko (AGK) Director name: Mr Diana Layfield Amount purchased: 3,000 @ 1,711.00p Value: £51,330JPMorgan Global Markets Emerging Income Trust (JEMI) Director name: Mrs Sarah FromsonAmount purchased: 21,990 @ 113.00p Value: £24,849Imagination Technologies Group (IMG) Director name: Mr Ian PearsonAmount purchased: 11,000 @ 177.83p Value: £19,561MS International (MSI) Director name: Mr Michael O'ConnellAmount purchased: 10,235 @ 178.00p Value: £18,218Top Director SellsFirst Quantum Minerals Ltd. (FQM) Director name: Mr Martin R RowleyAmount sold: 27,335 @ 1,034.05p Value: £282,658Michelmersh Brick Holdings (MBH) Director name: Mr Alan HardyAmount sold: 500,000 @ 70.00p Value: £350,000Prime People (PRP) Director name: Mr John LewisAmount sold: 195,000 @ 76.00p Value: £148,200NR