X0202 4 2006-01-10 0 0000319240 IRIS INTERNATIONAL INC IRI 0001343621 Yi John U 29365 QUEENS WAY AGOURA HILLS CA 91301 0 1 0 0 Vice President, Operations Common Stock 2006-01-10 4 X 0 12500 8.58 A 75131 D Common Stock 2006-01-10 4 X 0 2500 5.71 A 77631 D Stock Option (Right to Buy) 8.58 2006-01-10 4 X 0 12500 0.00 D 2005-12-10 2009-12-10 Common Stock 12500 0 D Stock Option (Right to Buy) 5.71 2006-01-10 4 X 0 2500 0.00 D 2004-12-15 2008-12-15 Common Stock 2500 0 D 10,000 shares are held indirectly by Reporting Person's wife, Gloria Yi. Originally exercisable in three equal annual installments on each of December 10, 2005, 2006 and 2007. On October 28, 2005, the options were accelerated by the Issuer's Board of Directors and therefore immediately vested as of such date. Originally exercisable in three equal annual installments on each of December 15, 2004, 2005 and 2006. On October 28, 2005, the options were accelerated by the Issuer's Board of Directors and therefore immediately vested as of such date. Martin G. Paravato as Attorney-in-Fact for John U. Yi 2005-01-12