X0202 4 2006-06-14 0 0000057497 LAMSON & SESSIONS CO LMS 0001193396 SKILLING DAVID VAN THE LAMSON & SESSIONS CO. 25701 SCIENCE PARK DRIVE CLEVELAND OH 44122 1 0 0 0 COMMON STOCK 3422 D COMMON STOCK 2006-06-14 4 A 0 42 24.0592 A 8705 I See Footnote COMMON STOCK 37628 D Restricted shares, exempt under Rule 16b-3(1), held by issuer until 3-year vesting period. New account as of May 2004. Shares held in Trust pursuant to Directors Deferred Compensation Plan - a 16b-3 Plan. Transaction(s) completed by Trustee as of June 14, 2006. 37,628 shares were previously held in Deferred Compensation Trust Account. /s/ Aileen Liebertz, Attorney-in-Fact for D. Van Skilling 2006-06-15