X0202 4 2005-12-16 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 2005-12-16 4 M 0 10000 9.88 A 14995 D COMMON STOCK 2005-12-16 4 M 0 12000 4.10 A 26995 D COMMON STOCK 2005-12-16 4 M 0 8000 3.44 A 34995 D COMMON STOCK 2005-12-16 4 M 0 4000 6.475 A 38995 D COMMON STOCK 2005-12-16 4 S 0 34000 27.00 D 4995 D COMMON STOCK 24980 I See Footnote Stock Option (Right to Buy Common Stock) 9.88 2005-12-16 4 M 0 10000 0.00 A 2002-02-21 2011-02-21 COMMON STOCK 10000 0 D Stock Option (Right to Buy Common Stock) 4.10 2005-12-16 4 M 0 12000 0.00 A 2003-02-20 2012-02-20 COMMON STOCK 12000 0 D Stock Option (Right to Buy Common Stock) 3.44 2005-12-16 4 M 0 8000 0.00 A 2004-02-18 2013-02-18 COMMON STOCK 8000 0 D Stock Option (Right to Buy Common Stock) 6.475 2005-12-16 4 M 0 4000 0.00 A 2005-04-30 2014-04-30 COMMON STOCK 4000 0 D Reflects 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. Held in Trust pursuant to the Deferred Compensation Plan for Executive officers - a 16b-3 Plan as of March 11, 2005. Exercisable over three years as follows: one-third on February 21, 2002; one-third on February 21, 2003; and one-third on February 21, 2004, with number of shares vested in each year rounded to the nearest whole share. Exercisable over three years as follows: one-third on February 20, 2003; one-third on February 20, 2004; and one-third on February 20, 2005, with number of shares vested in each year rounded to the nearest whole share. Exercisable over three years as follows: one-third on February 18, 2004; one-third on February 18, 2005; and one-third on February 18, 2006, with number of shares vested in each year rounded to the nearest whole share. Exercisable over three years as follows; one-third on April 30, 2005; one-third on April 30, 2006; and one-third on April 30, 2007, with number of shares vested in each year rounded to the nearest whole share. /s/ Aileen Liebertz Aileen Liebertz, Attorney-in-Fact for Norman E. Amos 2005-12-20