1 ================================================================================ UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-A FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 PATHNET TELECOMMUNICATIONS, INC. (Exact name of registrant as specified in its charter) Delaware 52-2201331 (State of incorporation (IRS Employer or organization) Identification No.) 1015 31ST STREET, N.W., WASHINGTON, DC 20007 (Address of principal executive offices) (Zip Code) 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 None If this Form relates to the registration of a class of securities pursuant to Section 12(b) of the Exchange Act and is effective pursuant to General Instruction A. (c), check the following box. [ ] If this Form relates to the registration of a class of securities pursuant to Section 12(g) of the Exchange Act and is effective pursuant to General Instruction A. (d), check the following box. [x] Securities Act registration statement file number to which this form relates: 333-91469 Securities to be registered pursuant to Section 12(g) of the Act: SENIOR GUARANTEES OF PATHNET, INC. 12 1/4% SENIOR NOTES DUE 2008 (Title of Class) ================================================================================ 2 ITEM 1. DESCRIPTION OF REGISTRANT'S SECURITIES TO BE REGISTERED The Registrant hereby incorporates by reference the section entitled "Description of the Guarantees" of the Prospectus, contained in the Registrant's Registration Statement on Form S-1 (File No. 333-91469) filed on November 22, 1999, as amended. ITEM 2. EXHIBITS The following exhibits are incorporated herein by reference: Exhibit Number Description ---------- -------------- 1. Form of Supplemental Indenture is incorporated herein by reference to Exhibit 4.3 to the Registrant's Registration Statement on Form S-1 (No. 333-91469). 2. Form of Guarantee is contained within Exhibit 4.3 to the Registrant's Registration Statement on Form S-1 (No. 333-91469). 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. PATHNET TELECOMMUNICATIONS, INC. (Registrant) By: /s/ Mary McDermott --------------------------- Name: Mary McDermott Title: Senior Vice President, General Counsel and Secretary Dated: March 30, 2000 - 2 -