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 20, 2000 ALGOS PHARMACEUTICAL CORPORATION ------------------------------------------------------ (Exact name of registrant as specified in its charter) Delaware 000-28844 22-3142274 - ---------------------------- --------- ---------- (State or other jurisdiction (Commission File Number) (I.R.S. Employer of Incorporation) Identification Number) 1333 Campus Parkway, Neptune, New Jersey 07753 ---------------------------------------------- (Address of principal executive offices) (Zip Code) (732) 938-5959 ---------------------------------------------- (Registrants' telephone number, including area code) N/A ---------------------------------------------- (former name or former address, if changed since last report) ITEM 5. OTHER EVENTS On June 20, 2000, Algos Pharmaceutical Corporation mailed a letter to its stockholders clarifying certain matters with respect to the election to receive non-transferable warrants, in lieu of the transferable warrants, in the previously disclosed merger of Algos with Endo Inc., a wholly owned subsidiary of Endo Pharmaceuticals Holdings Inc. The election procedure is as set forth in the attached letter. Note that Algos stockholders who do not complete all four steps outlined on the attached letter will not be able to elect to receive non-transferable warrants in the merger but will receive transferable, freely tradable warrants. Accordingly, holders who have purchased shares of Algos common stock after May 19, 2000 and prior to the completion of the merger will not be able to elect to receive non- transferable warrants in the merger and will, therefore, receive transferable warrants instead. The letter is attached as Exhibit 99.1 to this report. The Exhibits hereto are incorporated by reference herein and form an integral part hereof. Item 7. Financial Statements and Exhibits. Exhibits. 99.1 Letter, dated June 20, 2000, to Algos stockholders from John W. Lyle, President and Chief Executive Officer of Algos, regarding the election to receive non-transferable warrants. 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. Dated: June 20, 2000 ALGOS PHARMACEUTICAL CORPORATION By: /s/ John W. Lyle ----------------------------- John W. Lyle President and Chief Executive Officer EXHIBIT INDEX Sequentially Exhibit No. Numbered Page - ----------- ------------- 99.1 Letter, dated June 20, 2000, to Algos stockholders from John W. Lyle, President and Chief Executive Officer of Algos, regarding the election to receive non-transferable warrants.