X0201 4 2003-11-12 0 0000724004 MESA LABORATORIES INC /CO MLAB 0001228924 SCHMIEDER LUKE R 1 1 1 0 President,CEO,Treasurer Common Stock 2003-11-12 4 M 0 4000 3.75 A 345267 D common stock 2003-11-12 4 M 0 3000 5.5 A 348267 D common stock 2003-11-12 4 M 0 2000 4.55 A 350267 D common stock 2003-11-12 4 M 0 1000 5.91 A 351267 D stock purchase option 3.75 2003-11-12 4 M 0 4000 0 D 2000-11-05 2009-11-04 common stock 4000 20000 D stock purchase option 5.5 2003-11-12 4 M 0 3000 0 D 2001-06-27 2010-06-26 common stock 3000 17000 D stock purchase option 4.55 2003-11-12 4 M 0 2000 0 D 2002-07-02 2011-07-01 common stock 2000 15000 D stock purchase option 5.91 2003-11-12 4 M 0 1000 0 D 2003-10-16 2012-10-15 common stock 1000 14000 D Luke R Schmieder 2003-11-13