SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 ----------------------- FORM 8-A FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES PURSUANT TO SECTION 12(b) OR 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934 CAIS INTERNET, INC. ------------------- (Exact Name of Registrant as Specified in Its Charter) Delaware 52-2066769 - --------------------------------------- ------------------- (State of Incorporation or Organization (IRS Employer Identification No.) 1255 22/nd/ Street, N.W., Fourth Floor, Washington, DC 20037 - ------------------------------------------------------ ---------- (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. [ ] box. [X] Securities Act registration statement file number to which this form relates: 333-72769 - --------- 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 ------------------- ------------------------------ None Securities to be registered pursuant to Section 12(g) of the Act: Common Stock, par value $.01 per share -------------------------------------- (Title of Class) INFORMATION REQUIRED IN REGISTRATION STATEMENT Item 1. Description of Registrant's Securities to be Registered This registration statement relates to the registration of common stock, par value $.01 per share (the "Common Stock"), of CAIS Internet, Inc. (the "Company") to be registered with the Securities and Exchange Commission (the "Commission") pursuant to Section 12(g) under the Securities Exchange Act of 1934 (the "1934 Act") and to be listed on the Nasdaq National Market. The description of the Common Stock to be registered hereunder is set forth on page 63 of the Preliminary Prospectus and under the caption "Description of Capital Stock" on page 62 of the Company's registration statement on Form S-1, Registration No. 333-72769 filed with the Commission on May 17, 1999 (the "Registration Statement"), which Registration Statement and description is incorporated herein by reference. Item 2. Exhibits: 1. Restated Certificate of Incorporation of the Company (incorporated herein by reference to the Registration Statement). 2. Amended and Restated By-Laws of the Company (incorporated herein by reference to the Registration Statement). -2- 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. CAIS INTERNET, INC. Dated: May 17, 1999 By: /s/ Ulysses G. Auger, II ___________________________ Ulysses G. Auger, II Chief Executive Officer and Chairman of the Board -3-