A couple of hefty share purchases from directors in AIM-listed Toumaz sent the 'internet of things' company's shares flying on Thursday.Chief Executive Anthony Sethill bought £48,450 worth of shares at 3.23p, while Chairman Sir Richard Steeves topped that by shelling out £420,050 at 3.88p and mostly 3.05p.Toumaz had put out an encouraging set of final results on Monday, when Sethill cited a "key year" in the company's development, adding that "the building blocks for growth are now firmly in place". Toumaz's ultra-low power wireless technology have a wide range of potential applications, with the company so far focusing on products in healthcare monitoring and digital audio, with deals signed last year with Spotify and Imagination Technologies.Its wireless healthcare division earlier in March extended the sales reach of its SensiumVitals vital signs monitor to 12 countries, with a highly experienced direct sales force recruited for what the company sees as a "game changer" for patient safety and healthcare economics.The share purchases drew investor attention to management's bullishness, and the share price had leapt 20% to 4.5p by 15:00 on Thursday.Top Director BuysToumaz Limited (TMZ) Director name: Dr Richard Martin SteevesAmount purchased: 12,500,000 @ 3.05p Value: £381,250G4S (GFS) Director name: Mr John ConnollyAmount purchased: 100,000 @ 246.02p Value: £246,020Eclectic Bar Group (BAR) Director name: Mr James (Jim) Fallon Amount purchased: 60,241 @ 166.00p Value: £100,000Toumaz Limited (TMZ)Director name: Mr Anthony Sethill Amount purchased: 1,500,000 @ 3.23p Value: £48,450Toumaz Limited (TMZ) Director name: Dr Richard Martin SteevesAmount purchased: 1,000,000 @ 3.88p Value: £38,800Just Retirement Group (JRG) Director name: Mr Shayne DeightonAmount purchased: 25,000 @ 139.46p Value: £34,865Avingtrans (AVG) Director name: Mr Stephen McQuillanAmount purchased: 13,538 @ 167.45p Value: £22,669LMS Capital (LMS) Director name: Mr Neil LernerAmount purchased: 26,137 @ 77.80p Value: £20,335Filtronic (FTC) Director name: Mr Alan Robert NeedleAmount purchased: 50,000 @ 39.50p Value: £19,750Minera IRL Ltd. (MIRL) Director name: Mr Daryl HodgesAmount purchased: 79,500 @ 8.18p Value: £6,503Top Director SellsSt. Modwen Properties (SMP) Director name: Mr Simon ClarkeAmount sold: 1,500,000 @ 380.00p Value: £5,700,000RENN Universal Growth Investment Trust (RUG) Director name: Mr Ernest FentonAmount sold: 18,641 @ 297.00p Value: £55,364RENN Universal Growth Investment Trust (RUG) Director name: Mr Andrew Charles BarkerAmount sold: 16,549 @ 297.00p Value: £49,151S&U (SUS) Director name: Mr Anthony M V CoombsAmount sold: 600 @ 2,030.00p Value: £12,180NR