UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13G (Rule 13d-102) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULES 13d-1(b) (c), AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO RULE 13d-2(b) (AMENDMENT NO. _)* AEterna Laboratories Inc. -------------------------------------------------------------------------------- (Name of Issuer) Subordinate Voting Shares -------------------------------------------------------------------------------- (Title of Class of Securities) 007975105 -------------------------------------------- (CUSIP Number) February 4, 2004 -------------------------------------------------------------------------------- (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedule is filed: [ ] Rule 13d-1(b) [X] 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. 007975105 13G Page 2 of 5 Pages -------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSON S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON North Sound Capital LLC (1)(2) -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [X] (b) [ ] -------------------------------------------------------------------------------- 3 SEC USE ONLY -------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware -------------------------------------------------------------------------------- 5 SOLE VOTING POWER NUMBER OF 0 SHARES ------------------------------------------------------------- BENEFICIALLY OWNED BY 6 SHARED VOTING POWER EACH 2,635,523 (3) REPORTING ------------------------------------------------------------- PERSON 7 SOLE DISPOSITIVE POWER WITH 0 ------------------------------------------------------------- 8 SHARED DISPOSITIVE POWER 2,635,523 -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,635,523 -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* [ ] -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 5.8% -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON* OO -------------------------------------------------------------------------------- *SEE INSTRUCTIONS BEFORE FILLING OUT (1) The ultimate managing member of North Sound Capital LLC is Thomas McAuley. The Reporting Person may be deemed the beneficial owner of the shares in its capacity as the managing member of North Sound Legacy Fund LLC, North Sound Legacy Institutional Fund LLC and North Sound Legacy International Ltd. (the "Funds"), who are the holders of such shares. As the managing member of the Funds, the Reporting Person has voting and investment control with respect to the shares of common stock held by the Funds. (2) DMG Advisors LLC changed its name to North Sound Capital LLC effective April 1, 2003. (3) Includes 2,000,000 shares traded on the Toronto Stock Exchange (symbol: AEL CN) and 635,523 shares traded on the Nasdaq National Market (symbol: AELA). CUSIP No. 007975105 13G Page 3 of 5 Pages -------------------------------------------------------------------------------- Item 1(a). Name of Issuer: AEterna Laboratories Inc. Item 1(b). Address of Issuer's Principal Executive Offices: 1405, boul. du Parc-Technologique Quebec, Quebec Canada, G1P 4P5 Item 2(a). Name of Person Filing. Item 2(b). Address of Principal Business Office or, if None, Residence. Item 2(c). Citizenship. North Sound Capital LLC 53 Forest Avenue, Suite 202 Old Greenwich, CT 06870 Delaware limited liability company Item 2(d). Title of Class of Securities: Subordinate Voting Shares Item 2(e). CUSIP Number: 007975105 Item 3. If this statement is filed pursuant to Rules 13d-1(b), or 13d-2(b) or (c), check whether the person filing is a: Not Applicable Item 4. Ownership. The following is information regarding the aggregate number and percentage of the class of securities of the issuer identified in Item 1 as of February 4, 2004: (a) Amount beneficially owned: 2,635,523 Subordinate Voting Shares (3) (b) Percent of Class: 5.8% (c) Number of shares as to which such person has: (i) sole power to vote or direct the vote: 0 (ii) shared power to vote or direct the vote: 2,635,523 (iii) sole power to dispose or direct the disposition of: 0 ---------- (3) Includes 2,000,000 shares traded on the Toronto Stock Exchange (symbol: AEL CN) and 635,523 shares traded on the Nasdaq National Market (symbol: AELA). CUSIP No. 007975105 13G Page 4 of 5 Pages -------------------------------------------------------------------------------- (iv) shared power to dispose or direct the disposition of: 2,635,523 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. Not Applicable Item 7. Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person. 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. Certification pursuant to Rule 13d-1(c): By signing below I certify that, to the best of my knowledge and belief, the securities referred to above 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. CUSIP No. 007975105 13G Page 5 of 5 Pages -------------------------------------------------------------------------------- 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. Dated: February 13, 2004 NORTH SOUND CAPITAL LLC By: /s/ Thomas McAuley -------------------------------- Name: Thomas McAuley Title: Chief Investment Officer