X0101 42003-05-19 0000840883 BTU INTERNATIONAL INC BTUI 0001224713 CHU JEFFREY C 1000Options (right to buy)1.952003-05-192003-05-194A027321.95A2004-04-012008-04-01Common Stock273214993DOptions (right to buy)1.952003-05-192003-05-194A010001.95A2004-05-162010-05-16Common Stock100015993D250 shares on 05/16/2004 250 shares on 05/16/2005 250 shares on 05/16/2006 250 shares on 05/16/2007Jeffrey C. Chu2003-05-19