X0202 4 2005-02-17 0 0000057497 LAMSON & SESSIONS CO LMS 0001192138 AMOS NORMAN E THE LAMSON & SESSIONS CO. 25701 SCIENCE PARK DRIVE CLEVELAND OH 44122 0 1 0 0 Vice Pres. Supply Chain Mgt COMMON STOCK 2005-02-17 4 A 0 2290 10.075 A 7079 D COMMON STOCK 2005-03-09 4 A 0 3404 9.95 A 16930 I See Footnote 2 COMMON STOCK 2005-03-10 4 A 0 5496 10.119 A 22426 I See Footnote 2 COMMON STOCK 2005-03-11 4 A 0 2554 10.258 A 24980 I See Footnote 2 Total includes 4,995 restricted shares, exempt under Rule 16b-3(d)(1), held by issuer until 3-year vesting period, on February 18, 2006 and February 17, 2008 of 2,705 and 2,290 common shares, respectively. Total also includes 2,084 shares held jointly with spouse. Held in Trust pursuant to the Deferred Compensation Plan for Executive officers - a 16b-3 Plan as of March 11, 2005. /s/ Aileen Liebertz Aileen Liebertz, Attorney-in-Fact for Norman E. Amos 2005-03-30