-----BEGIN PRIVACY-ENHANCED MESSAGE----- Proc-Type: 2001,MIC-CLEAR Originator-Name: webmaster@www.sec.gov Originator-Key-Asymmetric: MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB MIC-Info: RSA-MD5,RSA, S+wb65KjslEPg1c6IlyTHQaAuf2pb0bhrMzZ5AkAWfyMQKCcb7HvnrH8vHGfp+5d 8ZtHCvG24Hlk31v/4HPsWQ== 0001172661-08-000510.txt : 20080926 0001172661-08-000510.hdr.sgml : 20080926 20080926111128 ACCESSION NUMBER: 0001172661-08-000510 CONFORMED SUBMISSION TYPE: SC 13G PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20080926 DATE AS OF CHANGE: 20080926 SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: OSCIENT PHARMACEUTICALS CORP CENTRAL INDEX KEY: 0000356830 STANDARD INDUSTRIAL CLASSIFICATION: PHARMACEUTICAL PREPARATIONS [2834] IRS NUMBER: 042297484 STATE OF INCORPORATION: MA FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13G SEC ACT: 1934 Act SEC FILE NUMBER: 005-34935 FILM NUMBER: 081090264 BUSINESS ADDRESS: STREET 1: 1000 WINTER STREET STREET 2: SUITE 2200 CITY: WALTHAM STATE: MA ZIP: 02451 BUSINESS PHONE: 7813982300 MAIL ADDRESS: STREET 1: 1000 WINTER STREET STREET 2: SUITE 2200 CITY: WALTHAM STATE: MA ZIP: 02451 FORMER COMPANY: FORMER CONFORMED NAME: GENOME THERAPEUTICS CORP DATE OF NAME CHANGE: 19941215 FORMER COMPANY: FORMER CONFORMED NAME: COLLABORATIVE RESEARCH INC DATE OF NAME CHANGE: 19920703 FILED BY: COMPANY DATA: COMPANY CONFORMED NAME: ORBIMED ADVISORS LLC CENTRAL INDEX KEY: 0001055951 IRS NUMBER: 133976876 STATE OF INCORPORATION: DE FILING VALUES: FORM TYPE: SC 13G BUSINESS ADDRESS: STREET 1: 767 3RD AVENUE STREET 2: 30TH FLOOR CITY: NEW YORK STATE: NY ZIP: 10017 BUSINESS PHONE: 2126845700 MAIL ADDRESS: STREET 1: 767 3RD AVENUE STREET 2: 30TH FLOOR CITY: NEW YORK STATE: NY ZIP: 10017 SC 13G 1 oscient0908.txt SCHEDULE 13G HOLDINGS REPORT UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 Oscient Pharmaceuticals (Name of Issuer) Common Stock (Title of Class of Securities) 68812R303 (CUSIP Number) September 16, 2008 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedule is filed: [x] Rule 13d-1(b) [ ] Rule 13d-1(c) [ ] Rule 13d-1(d) *The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page. The information required in the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes). CUSIP No. 68812R303 1. Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only). OrbiMed Advisors LLC 2. Check the Appropriate Box if a Member Of a Group (See Instructions) [ ] (a) [ ] (b) 3. SEC Use Only 4. Citizenship or Place of Organization Delaware 5. Sole Voting Power: 0 Number of Shares 6. Shared Voting Power: 1,305,556 Beneficially Owned by 7. Sole Dispositive Power: 0 Each Reporting Person With 8. Shared Dispositive Power: 1,305,556 9. Aggregate Amount Beneficially Owned by Each Reporting Person 1,305,556 10. Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) 11. Percent of Class Represented by Amount in Row (9) 8.00% 12. Type of Reporting Person (See Instructions) IA CUSIP No. 68812R303 1. Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only). OrbiMed Capital LLC 2. Check the Appropriate Box if a Member of a Group (See Instructions) [ ] (a) [ ] (b) 3. SEC Use Only 4. Citizenship or Place of Organization Delaware 5. Sole Voting Power: 0 Number of Shares 6. Shared Voting Power: 795,556 Beneficially Owned by 7. Sole Dispositive Power: 0 Each Reporting Person With 8. Shared Dispositive Power: 795,556 9. Aggregate Amount Beneficially Owned by Each Reporting Person 795,556 10. Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) 11. Percent of Class Represented by Amount in Row (9) 4.88% 12. Type of Reporting Person (See Instructions) IA CUSIP No. 68812R303 1. Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only). Samuel D. Isaly 2. Check the Appropriate Box if a Member of a Group (See Instructions) [ ] (a) [ ] (b) 3. SEC Use Only 4. Citizenship or Place of Organization United States 5. Sole Voting Power: 0 Number of Shares 6. Shared Voting Power: 2,101,112 Beneficially Owned by 7. Sole Dispositive Power: 0 Each Reporting Person With 8. Shared Dispositive Power: 2,101,112 9. Aggregate Amount Beneficially Owned by Each Reporting Person: 2,101,112 10. Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) 11. Percent of Class Represented by Amount in Row (9) 12.88% 12. Type of Reporting Person (See Instructions) HC Item 1. (a) Issuer: Oscient Pharmaceuticals 1. Address: 1000 WINTER STREET SUITE 2200 WALTHAM MA 02451 Item 2. (a) Name of Person Filing: OrbiMed Advisors LLC OrbiMed Capital LLC Samuel D. Isaly (b) Address of Principal Business Offices: 767 Third Avenue, 30th Floor New York, New York 10017 (c) Citizenship: Please refer to Item 4 on each cover sheet for each filing person (d) Title of Class of Securities Common stock (e) CUSIP Number: 68812R303 Item 3. OrbiMed Advisors LLC and OrbiMed Capital LLC are investment advisors in accordance with ss.240.13d-1(b)(1)(ii)(E). Samuel D. Isaly is a control person in accordance with ss.240.13d-1(b)(1)(ii)(G). Item 4. Ownership Please see Items 5 - 9 and 11 for each cover sheet for each filing separately Item 5. Ownership of Five Percent or Less of a Class Not Applicable Item 6. Ownership of More than Five Percent on Behalf of Another Person. Reporting persons are holding 12.88% (8.00% in the case of OrbiMed Advisors LLC and 4.88% in the case of OrbiMed Capital LLC) of the securities on behalf of other persons who have the right to receive or the power to direct the receipt of dividends from, or proceeds from sale of, such securities. No one such other person's interest in the securities whose ownership is reported here relates to more than five percent of the class. OrbiMed Advisors LLC and OrbiMed Capital LLC hold share equivalents issuable from convertible bonds on behalf of Caduceus Capital Master Fund Limited (795,556 share equivalents), Caduceus Capital II, L.P. (723,334 share equivalents), UBS Eucalyptus Fund, LLC (528,148 share equivalents), PW Eucalyptus Fund, Ltd. (54,074 share equivalents). Item 7. Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company Not Applicable Item 8. Identification and Classification of Members of the Group Not Applicable Item 9. Notice of Dissolution of Group Not Applicable Item 10. Certification By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect. SIGNATURE After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct. Date: September 26, 2008 OrbiMed Advisors LLC By: /s/ Samuel D. Isaly -------------------------- Name: Samuel D. Isaly Title: President OrbiMed Capital LLC By: /s/ Samuel D. Isaly -------------------------- Name: Samuel D. Isaly Title: Managing Member By: /s/ Samuel D. Isaly -------------------------- Name: Samuel D. Isaly JOINT FILING AGREEMENT The undersigned hereby agree that the Statement on this Schedule 13G dated September 26, 2008, (the "Schedule 13G"), with respect to the Common Stock, par value $.001 per share, of Oscient Pharmaceuticals is filed on behalf of each of us pursuant to and in accordance with the provisions of Rule 13d-1(k) under the Securities and Exchange Act of 1934, as amended, and that this Agreement shall be included as an Exhibit to this Schedule 13G. Each of the undersigned agrees to be responsible for the timely filing of the Schedule 13G, and for the completeness and accuracy of the information concerning itself contained therein. This Agreement may be executed in any number of counterparts, all of which taken together shall constitute one and the same instrument. IN WITNESS WHEREOF, the undersigned have executed this Agreement as of the 26th day of September 2008. OrbiMed Advisors LLC By: /s/ Samuel D. Isaly --------------------------- Name: Samuel D. Isaly Title: Managing Member OrbiMed Capital LLC By: /s/ Samuel D. Isaly ---------------------------- Name: Samuel D. Isaly Title: Managing Member By: /s/ Samuel D. Isaly ---------------------------- Name: Samuel D. Isaly Statement of Control Person The Statement on this Schedule 13G dated September 26, 2008 with respect to the common stock, $.001 par value per share, of Oscient Pharmaceuticals is filed by Samuel D. Isaly in accordance with the provisions of Rule 13d-1(b) and Rule 13d-1(k),respectively, as control person (HC) of OrbiMed Advisors LLC and OrbiMed Capital LLC. OrbiMed Advisors LLC and OrbiMed Capital LLC file this statement on Schedule 13G in accordance with the provisions of Rule 13d-1(b) and Rule 13d-1(k), respectively, as investment advisors (IA). -----END PRIVACY-ENHANCED MESSAGE-----