The chairman and founder of TVC Holdings, an investment firm focused on Irish companies, has upped his stake in the company, spending about £300,000.Shane Reihill took 500,000 shares at €0.70 a time and now has 21,668,322, which is about 21.4% of the company. Reihill founded TVC in 1997. He also sits on the board of UTV, the media company with the ITV licence for Northern Ireland and one of TVC's investments.Other companies TVC invests in include banking software group CR2 and hotels group Maldron.Top Director BuysTVC Holdings (TVCH) Director name: Mr Shane ReihillAmount purchased: 500,000 @ 61.4p Value: £307,000Swallowfield (SWL) Director name: Mr Martin HagenAmount purchased: 31,500 @ 114.00p Value: £35,910Cineworld Group (CINE) Director name: Mr Peter WilliamsAmount purchased: 10,000 @ 187.00p Value: £18,700Top Director SellsMothercare (MTC) Director name: Mr Ben GordonAmount sold: 395,633 @ 342.08p Value: £1,353,381Mothercare (MTC) Director name: Mr Ben GordonAmount sold: 249,977 @ 342.08p Value: £855,121ARM Holdings (ARM) Director name: Mr Warren EastAmount sold: 100,000 @ 585.50p Value: £585,500ARM Holdings (ARM) Director name: Mr Tim ScoreAmount sold: 100,000 @ 584.46p Value: £584,460Mothercare (MTC) Director name: Mr Neil HarringtonAmount sold: 158,253 @ 342.08p Value: £541,352Filtrona PLC (FLTR) Director name: Mr Steve CrummettAmount sold: 48,972 @ 355.57p Value: £174,130Filtrona PLC (FLTR) Director name: Mr Jon GreenAmount sold: 16,027 @ 355.57p Value: £56,987