Marks & Spencer's departing Head of Clothing Kate Bostock has taken advantage of recent bid speculation to sell shares in the company at 371.60p on Friday. In recent weeks there has been on-going speculation that private equity titan CVC Capital Partners is considering a takeover offer for the High Street group. It is thought that CVC is looking at a bid and has approached executives both inside and outside the firm "about a possible management role under private equity control," according to Bloomberg which has spoken to unnamed sources close the matter. Bostock, who is leaving the company by mutual consent on October 1st to pursue other interests, disposed of 249,627 shares for a total of £927,614, reducing her stake in the company to just 64,526 shares. Randgold Resources' Chief Financial Officer and Financial Director, Graham Shuttleworth, traded in a bunch of shares in the mining company on Friday, the same day broker Nomura said it sees better value elsewhere, rating it as 'reduce' with a price target of 6,815p. Shuttleworth sold 9,000 at 7,485.00p for a total of £673,650, lowering his shareholding to 39,938, or 0.04% of the issued share capital.Top Director BuysRuspetro (RPO) Director name: Mr Robert JenkinsAmount purchased: 50,000 @ 112.00p Value: £56,000Murray Income Trust (MUT) Director name: Ms Jean ParkAmount purchased: 3,000 @ 684.60p Value: £20,538Redhall Group (RHL) Director name: Mr Richard Shuttleworth Amount purchased: 30,000 @ 63.60p Value: £19,080Westhouse Holdings (WHL) Director name: Mr Garth MilneAmount purchased: 75,000 @ 16.00p Value: £12,000Allanfield Group (ALF) Director name: Mr Darryl NoikAmount purchased: 15,000 @ 70.00p Value: £10,500Top Director SellsJardine Matheson Holdings Ltd (Singapore) (JAR) Director name: Mr Peter James Holland RileyAmount sold: 50,000 @ $54.41 Value: $2,720,675Marks & Spencer Group (MKS) Director name: Mrs Kate BostockAmount sold: 249,627 @ 371.60p Value: £927,614Randgold Resources Ltd. (RRS) Director name: Mr Graham ShuttleworthAmount sold: 9,000 @ 7,485.00p Value: £673,650Premier Oil (PMO) Director name: Mr Robin AllanAmount sold: 149,303 @ 383.20p Value: £572,129UBM (UBM) Director name: Mr Robert Gray Amount sold: 29,026 @ 721.82p Value: £209,515