X0202 4 2004-06-25 0 0001003642 IMPAX LABORATORIES INC IPXL 0001245203 CHU MAY C/O IMPAX LABORATORIES, INC. 30831 HUNTWOOD AVE. HAYWARD CA 94544 0 1 0 0 Senior Vice President - QA Common Stock 2004-06-30 4 J 0 0 A 61204 D Common stock 2004-06-30 4 J 0 0 A 83027 I By spouse John Chu Option to purchase common stock 0.75 1996-09-09 1996-09-09 4 A 0 13373 0.75 A 1996-09-09 2006-09-09 Common Stock 13373 13373 D Option to purchase common stock 0.75 1999-04-02 1999-04-02 4 A 0 46716 0.75 A 1999-04-02 2009-04-02 Common Stock 46716 46716 D Option to purchase common stock 5.25 2000-08-01 2000-08-01 4 A 0 16000 5.25 A 2010-08-01 Common Stock 16000 16000 D Option to purchase common stock 5.625 2000-12-19 2000-12-19 4 A 0 15000 5.625 A 2010-12-19 Common Stock 15000 15000 D Option to purchase common stock 6.72 2002-03-08 2002-03-08 4 A 0 30000 6.72 A 2012-03-08 Common Stock 30000 30000 D Option to purchase common stock 3.04 2003-03-10 2003-04-04 4 A 0 20000 3.04 A 2013-03-10 Common Stock 20000 20000 D Option to purchase common stock 23.05 2004-04-14 2004-04-20 4 A 0 25000 23.05 A 2014-04-14 Common Stock 25000 25000 D Option to purchase common stock 20.78 2004-06-25 2004-06-28 4 A 0 10000 20.78 A 2014-06-25 Common Stock 10000 10000 D Option to purchase common stock 5.25 2000-08-01 2000-08-01 4 A 0 20000 5.25 A 2010-08-01 Common Stock 20000 20000 I By spouse John Chu Option to purchase common stock 5.625 2000-12-19 2000-12-19 4 A 0 20000 5.625 A 2010-12-19 Common Stock 20000 20000 I By spouse John Chu Option to purchase common stock 6.72 2002-03-08 2002-03-08 4 A 0 20000 6.72 A 2012-03-08 Common Stock 20000 20000 I By spouse John Chu Option to purchase common stock 3.04 2003-03-10 2003-04-04 4 A 0 25000 3.04 A 2013-03-10 Common Stock 25000 25000 I By spouse John Chu Option to purchase common stock 22.15 2004-05-29 2004-06-01 4 A 0 6000 22.15 A 2014-05-29 Common Stock 6000 6000 I By spouse John Chu Option vests as follows: 10% after 1 year from the date of grant, 30% after 2 years, 60% after 3 years and 100% after 4 years from the date of grant. Option vests over 4 years from the date of grant in 25% equal annual installments. This is the day that the Company informed the recipient of the award. Total amount of securities beneficially owned. May Chu 2004-06-30