UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 ---------- FORM 8-A/A (AMENDMENT NO. 1) FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 The Lamson & Sessions Co. -------------------------------------------------------------------------------- (Exact Name of Registrant as Specified in Its Charter) Ohio 34-0349210 ---------------------------------------- ------------------- (State of Incorporation or Organization) (I.R.S. Employer Identification No.) 25701 Science Park Drive, Cleveland OH 44122-7313 -------------------------------------------------------------------------------- (Address of Principal Executive Offices) (Zip Code) If this form relates to the If this form relates to the registration of a class of securities registration of a class of securities pursuant to Section 12(b) of the pursuant to Section 12(g) of the Exchange Act and is effective Exchange Act and is effective pursuant to General Instruction Pursuant to General Instruction A.(c), please check the following A.(d), please check the following box. [X] box. [ ] Securities Act registration statement file number to which this form relates: ------------------------- (If applicable) Securities to be registered pursuant to Section 12(b) of the Act: Title of Each Class Name of Each Exchange on Which to be so Registered Each Class is to be Registered ------------------- ------------------------------ Preferred Share Purchase Rights Pacific Stock Exchange Securities to be registered pursuant to Section 12(g) of the Act: N/A -------------------------------------------------------------------------------- (Title of class) ITEM 1. DESCRIPTION OF REGISTRANT'S SECURITIES TO BE REGISTERED On April 29, 2005, the Board of Directors of The Lamson & Sessions Co., an Ohio corporation (the "Company") approved Amendment No. 1, dated as of May 5, 2005 (the "Amendment"), to the Rights Agreement, dated as of September 8, 1998 (the "Rights Agreement"), between the Company and National City Bank as rights agent. The Amendment provides that any person may own up to 20% of the Company's outstanding common stock before any Triggering Event (as defined in the Rights Agreement) will be deemed to occur. The foregoing description of the Amendment is qualified in its entirety by reference to the full text of the Amendment, a copy of which has been filed as an exhibit hereto and incorporated herein by reference. Copies of the Rights Agreement and the Amendment are available free of charge from the Company. ITEM 2. EXHIBITS Number Description ------ ----------- 4.1 Amendment No. 1, dated as of May 5, 2005, to the Rights Agreement, dated as of September 8, 1998, between the Company and National City Bank, as rights agent. SIGNATURE Pursuant to the requirements of Section 12 of the Securities Exchange Act of 1934, the Registrant has duly caused this registration statement to be signed on its behalf by the undersigned, thereto duly authorized. THE LAMSON & SESSIONS CO. By: /s/ James J. Abel --------------------------------------------- Name: James J. Abel Title: Executive Vice President, Secretary, Treasurer and Chief Financial Officer Date: May 5, 2005 EXHIBIT INDEX Number Description ------ ----------- 4.1 Amendment No. 1, dated as of May 5, 2005, to the Rights Agreement, dated as of September 8, 1998, between the Company and National City Bank, as rights agent.