UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, DC 20549
SCHEDULE 13G
Under the Securities Exchange Act of 1934
(Amendment No. 4) *
AEterna Zentaris Inc.
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(Name of Issuer)
Common Shares
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(Title of Class of Securities)
007975204
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(CUSIP Number)
December 31, 2005
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(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)
[ ]Rule 13d-1(c)
[X]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.
Page 1 of 6 Pages
CUSIP No. 007975204 13G Page 2 of 6 Pages
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1) NAMES OF REPORTING PERSONS Dr. Eric Dupont
IRS IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
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2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a) [ ]
(b) [ ]
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3) SEC USE ONLY
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4) CITIZENSHIP OR PLACE OF ORGANIZATION Canada
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NUMBER OF 5) SOLE VOTING POWER 4,052,413*
SHARES ----------------------------------------------------------
BENEFICIALLY 6) SHARED VOTING POWER 0
OWNED BY ----------------------------------------------------------
EACH 7) SOLE DISPOSITIVE POWER 4,052,413*
REPORTING ----------------------------------------------------------
PERSON WITH 8) SHARED DISPOSITIVE POWER 0
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9) AGGREGATE AMOUNT BENEFICIALLY OWNED 4,052,413*
BY EACH REPORTING PERSON
* Includes (i) options held by the reporting person to purchase 285,000 Common
Shares and (ii) 9,000 Common Shares held by 9143-5842 Quebec (the "Numbered
Company"). All Common Shares held by the Numbered Company are deemed to be
beneficially owned by the reporting person, who is the sole shareholder of the
Numbered Company.
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10) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES
CERTAIN SHARES [ ]
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11) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
Approximately 8.7%**
** Based on an aggregate of 46,424,814 Common Shares, which consists of options
held by the reporting person to purchase 285,000 Common Shares and 46,139,814
Common Shares issued and outstanding as of December 31, 2005, as reported by the
issuer to the reporting person.
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12) TYPE OF REPORTING PERSON IN
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Page 2 of 6 Pages
CUSIP No. 007975204 13G Page 3 of 6 Pages
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Item 1(a). Name of Issuer:
AEterna Zentaris Inc.
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Item 1(b). Address of Issuer's Principal Executive Offices:
1405, boul. du Parc-Technologique
Quebec, Quebec
Canada G1P 4P5
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Item 2(a). Name of Person Filing:
Dr. Eric Dupont
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Item 2(b). Address of Principal Business Office or, if None,
Residence:
The principal business office address of the reporting
person is as follows:
AEterna Zentaris Inc.
1405, boul. du Parc-Technologique
Quebec, Quebec
Canada G1P 4P5
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Item 2(c). Citizenship:
The citizenship of the reporting person is as follows:
Canada
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Item 2(d). Title of Class of Securities:
Common Shares
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Item 2(e). CUSIP Number:
007975204
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Page 3 of 6 Pages
CUSIP No. 007975204 13G Page 4 of 6 Pages
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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.
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Item 4. Ownership.
Provide the following information regarding the aggregate
number and percentage of the class of securities of the
issuer identified in Item 1.
(a) Amount beneficially owned: 4,052,413*
(b) Percent of class: 8.7%**
(c) Number of shares as to which the person has:
(i) Sole power to vote or to direct the vote
4,052,413*
(ii) Shared power to vote or to direct the vote
0
(iii) Sole power to dispose or to direct the disposition of
4,052,413*
(iv) Shared power to dispose or to direct the disposition of
0
*Includes (i) options held by the reporting person to purchase 285,000 Common
Shares and (ii) 9,000 Common Shares held by the Numbered Company. All Common
Shares held by the Numbered Company are deemed to be beneficially owned by the
reporting person, who is the sole shareholder of the Numbered Company.
** Based on an aggregate of 46,424,814 Common Shares, which consists of options
held by the reporting person to purchase 285,000 Common Shares and 46,139,814
Common Shares issued and outstanding as of December 31, 2005, as reported by the
issuer to the reporting person.
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Page 4 of 6 Pages
CUSIP No. 007975204 13G Page 5 of 6 Pages
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Item 5. Ownership of Five Percent or Less of a Class.
If this statement is being filed to report the fact that
as of the date hereof the reporting person has ceased to
be the beneficial owner of more than five percent of the
class of securities, check the following [ ].
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Item 6. Ownership of More than Five Percent on Behalf of Another
Person.
Not Applicable.
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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.
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Item 8. Identification and Classification of Members of the Group.
Not Applicable.
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Item 9 Notice of Dissolution of Group.
Not Applicable.
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Item 10. Certification.
Not Applicable.
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Page 5 of 6 Pages
CUSIP No. 007975204 13G Page 6 of 6 Pages
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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: January 24, 2006
/s/ Eric Dupont
--------------------------
Eric Dupont
Page 6 of 6 Pages