(ShareCast News) - Four of the directors of Vipera, a specialist provider of mobile financial services, bought a total of 1.05m shares in the company at 3.25p each.Chief executive officer Marco Casartelli, non-executive director Petter Neby and director Mauro Duca picked up 300,000 shares each while chief financial officer Martin Perrin nabbed 150,000 shares.Elsewhere, Jarvis Securities said Sion Securities, a company in which director Andrew Grant has a controlling interest, acquired 18,500 shares in the stockbroker at 337p a share.He now holds an interest of just under 5.9m shares or 53.1% of issued shares.Top Director BuysJarvis Securities (JIM)Director name: Grant,Andrew JAmount purchased: 18,500 @ 337.00pValue: £62,345.00Vipera (VIP)Director name: Perrin,Martin Henry WithersAmount purchased: 150,000 @ 3.25pValue: £48,750.00Vipera (VIP)Director name: Casartelli,MarcoAmount purchased: 300,000 @ 3.25pValue: £9,750.00Vipera (VIP)Director name: Neby,PetterAmount purchased: 300,000 @ 3.25pValue: £9,750.00Vipera (VIP)Director name: Duca,MauroAmount purchased: 300,000 @ 3.25pValue: £9,750.00Techfinancials (di) (TECH)Director name: Nissani,Hillel (Hillik)Amount purchased: 30,000 @ 12.00pValue: £3,600.00Techfinancials (di) (TECH)Director name: Lange,JeremyAmount purchased: 20,000 @ 12.00pValue: £2,400.00Techfinancials (di) (TECH)Director name: Lahav,AsafAmount purchased: 19,549 @ 12.00pValue: £2,345.88Techfinancials (di) (TECH)Director name: Lahav,AsafAmount purchased: 10,000 @ 11.50pValue: £1,150.00Johnson Matthey (JMAT)Director name: Farrant,SimonAmount purchased: 18 @ 2,416.21pValue: £434.92Johnson Matthey (JMAT)Director name: Jones,Den Amount purchased: 18 @ 2,416.21pValue: £434.92Johnson Matthey (JMAT)Director name: Walker,JohnAmount purchased: 15 @ 2,416.21pValue: £362.43Johnson Matthey (JMAT)Director name: MacLeod,RobertAmount purchased: 15 @ 2,416.21pValue: £362.43Centaur Media (CAU)Director name: Vidler ,AndriaAmount purchased: 254 @ 59.00pValue: £149.86Pennon Group (PNN)Director name: Davy ,Susan Amount purchased: 15 @ 828.90pValue: £124.33Top Director SellsUrban&civic (UANC)Director name: Austen,Jon Amount purchased: 46,477 @ n/aValue: n/aUrban&civic (UANC)Director name: Leech,PhilipAmount purchased: 54,856 @ n/aValue: n/a