UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 DATE OF REPORT (Date of earliest event reported) April 29, 1999 TELLABS, INC. (Exact name of registrant as specified in its charter) Delaware 0-9692 36-3831568 (State or other jurisdiction (Commission (IRS employer of incorporation) file number) identification no.) 4951 Indiana Avenue, Lisle, Illinois 60532 (Address of principal executive office) (Zip Code) Registrant's telephone number, including area code (630) 378-8800 N/A 	 (Former name or former address, if changed since last report) Item 5. Other Events On April 29, 1999, Tellabs, Inc. (the "Company") issued its First Quarter Report 1999 to stockholders through its website at www.tellabs.com. Incorporated into the First Quarter Report 1999 are links to the First Quarter Earnings Release which includes the Results of Operations and Condensed Consolidated Balance Sheet. The First Quarter Report 1999 to stockholders and the First Quarter Earnings Release including Results of Operations and Condensed Consolidated Balance Sheet are attached hereto as Exhibit 20.1 and Exhibit 99.2, respectively, and are incorporated herein by reference. Item 7. Financial Statements and Exhibits (c) Exhibits Exhibit 20.1 - First Quarter Report 1999 Exhibit 99.2 - First Quarter Earnings Release with Results of Operations and Condensed Consolidated Balance Sheet SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. TELLABS, INC Date: April 29, 1999 By: /s Robert E. Swininoga -------------- ----------------------- Robert E. Swininoga Vice President and Principal Accounting Officer Exhibit Index Exhibit No. Description - ----------- ----------- 20.1 First Quarter Report 1999 99.2 First Quarter Earnings Release with Results of Operations and Condensed Consolidated Balance Sheet