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) June 16, 1999 Mallinckrodt Inc. - -------------------------------------------------------------------------------- (Exact Name of Registrant as Specified in Charter) New York 1-00483 36-1263901 - -------------- ------------------------ ------------------- (State of (Commission File Number) (IRS Employer incorporation) Identification No.) 675 McDonnell Boulevard, St. Louis, Missouri 63134 - -------------------------------------------- -------------- (Address of principal executive offices) (Zip Code) (314) 654-2000 ------------------------------- (Registrant's telephone number, including area code) Not Applicable - -------------------------------------------------------------------------------- (Former name or former address, if changed since last report) Item 5. Other Events. The Board of Directors of Mallinckrodt Inc. ("Mallinckrodt") amended Mallinckrodt's by-laws (the "By-Laws") on June 16, 1999 (the "By-Law Amendments"). The By-Law Amendments modify Article I by amending Section 6 and modify Article V by adding a Section 6. The foregoing description is qualified in its entirety by reference to the By-Law Amendments, which are attached as an exhibit hereto and are incorporated herein by reference. Item 7. Financial Statements, Pro Forma Financial Information and Exhibits. (a) Not Applicable. (b) Not Applicable. (c) Exhibits. Exhibit No. Description - ----------- ----------- 99 Amendments to Mallinckrodt's By-Laws, dated June 16, 1999 SIGNATURE 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. MALLINCKRODT INC. By /s/ ROGER A. KELLER -------------------------- Name: Roger A. Keller Title: Vice President, General Counsel and Secretary Date: June 21, 1999