X0201 4 2003-08-13 0 0000069499 MYLAN LABORATORIES INC MYL 0001051093 SUNSERI PATRICIA MYLAN LABORATORIES INC 1500 CORPORATE DR SUITE 400 CANONSBURG PA 15317 1 1 0 0 Senior VP, Mylan Laboratories Mylan Laboratories Inc. Common Stock 2003-08-13 4 S 0 100000 34.3942 D 507124 D Mylan Laboratories Inc. common stock Indirect ownership through 401(k) holdings was 5,807 as of August 8, 2003. Particia A. Sunseri 2003-08-14