1 FORM 10-K/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 (Mark One) [X] ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 1997 OR [ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission file number: 0-12042 BIOGEN, INC. (Exact name of Registrant as specified in its charter) Massachusetts 04-3002117 (State or other jurisdiction (I.R.S. Employer of incorporation or organization) Identification No.) 14 Cambridge Center, Cambridge, Massachusetts 02142 (Address of principal executive offices)(zip code) Registrant's telephone number, including area code: (617) 679-2000 Securities registered pursuant to Section 12(b) of the Act: None Securities registered pursuant to Section 12(g) of the Act: Common Stock, $.01 par value (Title of class) Indicate by check mark whether the Registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the Registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes X No --- --- Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of Registrant's knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K. [ ] Aggregate market value of Common Stock held by nonaffiliates of the Registrant at February 18, 1998: $3,132,883,164 (excludes shares held by directors). Exclusion of shares held by any person should not be construed to indicate that such person possesses the power, direct or indirect, to direct or cause the direction of management or policies of the Registrant, or that such person is controlled by or under common control with the Registrant. Common Stock outstanding at February 18, 1998: 73,822,242 shares. 2 PART IV - ------- ITEM 14. EXHIBITS, FINANCIAL STATEMENT SCHEDULES, AND REPORTS ON FORM 8-K (3) Exhibits Exhibit No. Description - ----------- ----------- (23) Consent of Price Waterhouse LLP (99.1) Financial Statements for Biogen Savings Plan 3 Pursuant to the requirements of Section 13 or 15(d) 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. BIOGEN, INC. By: /s/ Michael J. Astrue ------------------------------ Michael J. Astrue Vice President - General Counsel Dated June 30, 1998 4 EXHIBIT INDEX Exhibit No. Description - ----------- ----------- (23) Consent of Price Waterhouse LLP (99.1) Financial Statements for Biogen Savings Plan