(ShareCast News) - Mariana Resources´s chief operating officer sold just over a third of his stake in the mining outfit just as the company´s shares were hovering near their 52-week high.Eric Roth sold 2.8m shares at an individual price of 3.5p each, pocketing £98,000 in the process.On 23 May 2016, the mainly South America-focused precious metals and copper miner published what analysts at ShoreCap labelled as "encouraging drilling results from the exciting 30%-owned Hot Maden Au-Cu project in Turkey," with an updated resource estimate due to be published this same month.After selling down 37% of his stake Roth was left holding 4.782m shares in the firm.As of 15:22 BST shares in Mariana were slipping 2% to 3.68p, giving the company a market capitalisation of £44.07m. Top Director BuysKennedy Wilson Europe Real Estate (KWE)Director name: Ricks,Mary Amount purchased: 20,000 @ 1,057.00pValue: £211,399.99Electra Private Equity (ELTA)Director name: Bramson,EdwardAmount purchased: 4,605 @ 3,801.00pValue: £175,036.04Porta Communications (PTCM)Director name: Morton,Bob Amount purchased: 500,000 @ 5.75pValue: £28,750.00Jpmorgan Japan Smaller Companies Trust (JPS)Director name: Guthrie,DeborahAmount purchased: 7,269 @ 273.64pValue: £19,890.89Rps Group (RPS)Director name: Hearne,AlanAmount purchased: 65 @ 192.30pValue: £124.99Rps Group (RPS)Director name: Williams,PhilAmount purchased: 65 @ 192.30pValue: £124.99Rps Group (RPS)Director name: Young,GaryAmount purchased: 65 @ 192.30pValue: £124.99Top Director SellsJupiter Energy Ltd (JPRL)Director name: Gander,GeoffAmount sold: 1,184,112 @ A$0.25Value: A$155,714.06Mariana Resources Ltd. (MARL)Director name: Roth,EricAmount sold: 2,800,000 @ 3.50pValue: £98,000.00Brainjuicer Group (BJU)Director name: Geddes,JamesAmount sold: 20,000 @ 362.00pValue: £72,400.00