Jon Attenburrow, a director at Hallin Marine, which makes underwater equipment for the oil and gas industries, has spent £49,000 upping his stake in the firm.He bought 50,000 shares at 98p a time and now has 475,000, or 1.15% of the firm.Attenburrow heads Hallin's eastern division. The company has offices in Singapore, China, the UK, US and elsewhere.Top Director BuysHallin Marine Subsea International (HMS) Director name: Mr Jon Berwyn AttenburrowAmount purchased: 50,000 @ 98.00p Value: £49,000Sunkar Resources (SKR) Director name: Mr Donald SinclairAmount purchased: 110,455 @ 13.50p Value: £14,911Sunkar Resources (SKR) Director name: Mr Teck Soon KongAmount purchased: 100,000 @ 13.00p Value: £13,000Pan Pacific Aggregates (PPA) Director name: Mr Euan McAlpineAmount purchased: 3,000,000 @ 0.40p Value: £12,000Sunkar Resources (SKR) Director name: Mr Teck Soon KongAmount purchased: 88,250 @ 13.30p Value: £11,737Johnson Service Group (JSG) Director name: Mr Bill ShannonAmount purchased: 75,000 @ 14.10p Value: £10,575Top Director SellsCaledonia Investments (CLDN) Director name: Mr Jamie M B Cayzer-ColvinAmount sold: 12,599 @ 1,522.50p Value: £191,820