A Non-Executive Director of Aberdeen Asset Management last week bought a stake in the FTSE 100-listed group worth 60,000 pounds, it was announced on Monday. Richard Mully, who has sat on the board since April 2012, acquired 15,000 shares at 400p a go. The purchase came just a week after the group reported a drop in quarterly assets under management (AuM) and a fall in gross inflows in the face of "weaker investor sentiment". AuM came to £193.6bn at December 31st 2013, down from £200.4bn at the end of September and lower than analyst expectations.Gross inflows in three months to end of December were £6.8bn, compared to £9.6bn the previous quarter.The past 12 months have been a volatile year for the company's share price, which in that time has seen a high of 500p and low of 348p. Top Director BuysPacific Alliance China Land Ltd. (PACL) Director name: Mr Horst J F GeickeAmount purchased: 100,000 @ $1.73 Value: $173,000Aberdeen Asset Management (ADN) Director name: Mr Richard Stephen MullyAmount purchased: 15,000 @ 400.00p Value: £60,000Europa Oil & Gas (Holdings) (EOG) Director name: Mr Hugh Mackay Amount purchased: 934,179 @ 6.00p Value: £56,051General Electric Co (GEC) Director name: Mr W. Geoffrey BeattieAmount purchased: 2,000 @ € 18.62 Value: € 37,244Plant Impact (PIM) Director name: Dr David Jones Amount purchased: 200,000 @ 14.50p Value: £29,000Europa Oil & Gas (Holdings) (EOG) Director name: Mr Roderick CorrieAmount purchased: 309,974 @ 6.00p Value: £18,598NR