1 This document consists of 113 pages, of which this page is Number 1. The index to Exhibits is on Page 4. FORM 8-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report June 3, 1999 Commission File Number 0-18976 ----------------- CELTRIX PHARMACEUTICALS, INC. (Exact name of registrant as specified in its charter) Delaware 94-3121462 (State or other jurisdiction of (I.R.S. Employer Identification No.) incorporation or organization) 2033 Gateway Place Suite 600 San Jose, CA 95110 (408) 988-2500 (Registrant's telephone number, including area code) 2 ITEM 5. OTHER EVENTS On April 21, 1999, Celtrix Pharmaceuticals, Inc., a Delaware corporation (the "Company"), Elan International Services, Ltd.,and Elan Corporation, PLC ("Elan") entered into a joint development agreement pursuant to which the parties agreed to jointly organize and capitalize Celtrix Newco Ltd., a Bermuda company ("Newco"), for the purpose of testing and establishing the efficacy of the Company's drug, SomatoKine, delivered through use of Elan's MEDIPAD Drug Delivery System, to patients suffering from Osteoporosis. Pursuant to a License Agreement between the Company and Newco dated as of April 21, 1999, the Company has licensed to Newco certain intellectual property related to SomatoKine. Pursuant to a License Agreement between Elan Pharmaceutical Technologies, a division of Elan, and Newco dated as of April 21, 1999, Elan Pharmaceutical Technologies has licensed to Newco certain intellectual property related to the MEDIPAD Drug Delivery System. These agreements are attached as exhibits hereto and incorporated by reference herein. ITEM 7. FINANCIAL STATEMENTS, PRO FORMA FINANCIAL INFORMATION AND EXHIBITS. (c) EXHIBITS. Exhibit 10.58 Subscription, Joint Development and Operating Agreement by and among Celtrix Pharmaceuticals, Inc., Elan Corporation, PLC, Elan International Services, Ltd., and Celtrix Newco Ltd. dated as of April 21, 1999. Exhibit 10.59 License Agreement by and between Celtrix Newco Ltd. and Celtrix Pharmaceuticals, Inc. dated as of April 21, 1999. Exhibit 10.60 License Agreement by and between Celtrix Newco Ltd. and Elan Pharmaceutical Technologies, a division of Elan Corporation, PLC, dated as of April 21, 1999. 3 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 thereunto duly authorized. CELTRIX PHARMACEUTICALS, INC. Date: June 3, 1999 By: /s/ Donald D. Huffman ------------------------------ Donald D. Huffman Vice President and Chief Financial Officer 4 CELTRIX PHARMACEUTICALS, INC. INDEX TO EXHIBITS EXHIBIT Page NUMBER No. - ------- ---- 10.58 Subscription, Joint Development and Operating 5 Agreement by and among Celtrix Pharmaceuticals, Inc., Elan Corporation, PLC, Elan International Services, Ltd., and Celtrix Newco Ltd. dated as of April 21, 1999. 10.59 License Agreement by and between Celtrix Newco Ltd. 57 and Celtrix Pharmaceuticals, Inc. dated as of April 21, 1999. 10.60 License Agreement by and between Celtrix Newco Ltd. 86 and Elan Pharmaceutical Technologies, a division of Elan Corporation, PLC, dated as of April 21, 1999.