DUBLIN, IRELAND--(Marketwire - April 15, 2008) - Trinity Biotech plc (NASDAQ: TRIB), a leading developer and manufacturer of diagnostic products for the point-of-care and clinical laboratory markets, today announced that Executive Chairman, Ronan O’Caoimh, purchased 250,000 ADRs in the Company in the open market. This follows a purchase of 100,000 ADRs in the Company made by Ronan O’Caoimh on March 20th, 2008.