UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Schedule 13G/A
(Amendment No. 4)
Under the Securities Exchange Act of 1934
Repligen Corp.
Common Stock, par value $.01 per share
(Title of Class of Securities)
February 14, 2003
(CUSIP Number: 759916109)
December 31, 2002
Date of event which requires filing
Check the appropriate box to designate the rule pursuant to which the 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
disclosures provided in a prior cover page.
The information required in the remainder of this cover page shall not be deemed
to be filled 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
to Schedule 13G).
Page 1 of 9
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CUSIP No. 759916109 13G Page 2 of 9 Pages
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1. NAME OF REPORTING PERSONS
S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Paramount Capital Asset Management, Inc.
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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
Delaware
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NUMBER OF 5. SOLE VOTING POWER
SHARES None
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BENEFICIALLY 6. SHARED VOTING POWER
OWNED BY 1,139,150
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EACH 7. SOLE DISPOSITIVE POWER
REPORTING None
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PERSON 8. SHARED DISPOSITIVE POWER
WITH 1,139,150
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9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
1,139,150
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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)
4.17%
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12. TYPE OF REPORTING PERSON*
CO
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Page 2 of 9
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CUSIP No. 759916109 13G Page 3 of 9 Pages
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1. NAME OF REPORTING PERSONS
S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Aries Domestic Fund, L.P.
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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
Delaware
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NUMBER OF 5. SOLE VOTING POWER
SHARES None
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BENEFICIALLY 6. SHARED VOTING POWER
OWNED BY 41,191
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EACH 7. SOLE DISPOSITIVE POWER
REPORTING
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PERSON 8. SHARED DISPOSITIVE POWER
WITH 41,191
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9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
41,191
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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)
0.15%
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12. TYPE OF REPORTING PERSON*
PN
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Page 3 of 9
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CUSIP No. 759916109 13G Page 4 of 9 Pages
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1. NAME OF REPORTING PERSONS
S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
The Aries Master Fund II
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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
Cayman Islands
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NUMBER OF 5. SOLE VOTING POWER
SHARES None
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BENEFICIALLY 6. SHARED VOTING POWER
OWNED BY 1,097,959
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EACH 7. SOLE DISPOSITIVE POWER
REPORTING None
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PERSON 8. SHARED DISPOSITIVE POWER
WITH 1,097,959
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9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
1,097,959
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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)
3.86%
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12. TYPE OF REPORTING PERSON*
OO (see Item 2)
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Page 4 of 9
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CUSIP No. 759916109 13G Page 5 of 9 Pages
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1. NAME OF REPORTING PERSONS
S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
Lindsay A. Rosenwald, M.D.
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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
United States
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NUMBER OF 5. SOLE VOTING POWER
SHARES 33,250
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BENEFICIALLY 6. SHARED VOTING POWER
OWNED BY 1,139,150
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EACH 7. SOLE DISPOSITIVE POWER
REPORTING 33,250
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PERSON 8. SHARED DISPOSITIVE POWER
WITH 1,139,150
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9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
1,172,400
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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)
4.28%
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12. TYPE OF REPORTING PERSON*
IN
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ITEM 1(a). NAME OF ISSUER:
Repligen Corporation.
ITEM 1(b). ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES:
117 Fourth Avenue, Needham, MA 02494
ITEM 2(a) NAME OF PERSON FILING:
This statement is filed on behalf of Paramount Capital Asset
Management, Inc. ("Paramount Capital"), Aries Domestic Fund, L.P.
("Aries Domestic"), Aries Domestic Fund II, L.P. ("Aries II"), Aries
Master Fund II, a Cayman Island exempted company ("Aries Fund") and
Lindsay A. Rosenwald, M.D. ("Dr. Rosenwald" and collectively, the
"Reporting Persons").
Dr. Rosenwald is an investment banker, venture capitalist, fund
manager and sole stockholder of Paramount Capital. Paramount Capital
is the General Partner to Aries Domestic and Aries II. Paramount
Capital is the Investment Manager to Aries Fund.
This statement relates to Shares (as defined herein) held for the
accounts of Aries Domestic, Aries II and Aries Fund.
ITEM 2(b) ADDRESS OF PRINCIPAL BUSINESS OFFICE OR, IF NONE, RESIDENCE:
The address of the principal business office of Paramount Capital,
Aries Domestic, Aries II and Dr. Rosenwald is 787 Seventh Avenue,
48th Floor, New York, New York, 10019. The address of the principal
business office of Aries Fund is c/o Fortis Fund Services Cayman
Limited, Grand Pavilion Commercial Center, 802 West Bay Road, Grand
Cayman, Cayman Islands.
ITEM 2(c). CITIZENSHIP:
1) Paramount Capital is a Subchapter S corporation incorporated
in Delaware;
2) Aries Domestic is a Delaware limited partnership;
3) Aries II is a Delaware limited partnership;
4) Aries Fund is a Cayman Islands exempted company; and
5) Dr. Rosenwald is a citizen of the United States.
ITEM 2(d). TITLE OF CLASS OF SECURITIES:
Common Stock, par value $0.01 per share.
ITEM 2(e). CUSIP NUMBER: 759916109
ITEM 3. |X| CHECK THIS BOX IF THIS STATEMENT IS FILED PURSUANT TO RULE
13d-1(c)
Page 6 of 9
ITEM 4. OWNERSHIP
Each of the Reporting Persons may be deemed the beneficial owner of the
following number of Shares:
(i) Paramount Capital may be deemed to own 1,139,150 shares of
Common Stock or 4.17%.
(ii) Aries Domestic may be deemed the beneficial owner of 41,191
Shares or 0.15%.
(iii) Aries Fund may be deemed the beneficial owner of 1,097,959
Shares or 3.86%.
(iv) Dr. Rosenwald may be deemed the beneficial owner of 1,172,400
Shares or 4.28%. Dr. Rosenwald disclaims the beneficial ownership of the
securities beneficially owned by PCAM except to the extent of his
pecuniary interest therein, if any.
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
(i) Dr. Rosenwald, as the shareholder of Paramount Capital, has the
right to participate in the receipt of dividends from, or proceeds from
the sale of, Shares held by Paramount Capital in accordance with his
ownership interests in Paramount Capital.
(ii) The partners of Aries Domestic have the right to participate in
the receipt of dividends from, or proceeds from the sale of, the
securities held for the account of Aries Domestic in accordance with their
partnership interests in Aries Domestic.
(iii) The partners of Aries II have the right to participate in the
receipt of dividends from, or proceeds from the sale of, the securities
held for the account of Aries Domestic in accordance with their
partnership interests in Aries II.
(iv) The shareholders of Aries Fund have the right to participate in
the receipt of dividends from, or proceeds from the sale of, the
securities held for the account of Aries Fund in accordance with their
ownership interests in Aries Fund.
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 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
Page 7 of 9
connection with or as a participant in a transaction having that
purpose and effect.
SIGNATURES
After reasonable inquiry and to the best of my knowledge and belief, the
undersigned certifies that the information set forth in this statement is true,
complete and correct.
Date: February 14, 2003 PARAMOUNT CAPITAL ASSET MANAGEMENT, INC.
By: /s/ Lindsay A. Rosenwald
-------------------------------------
Name: Lindsay A. Rosenwald, M.D.
Title: Chairman
ARIES DOMESTIC FUND, L.P.
By: Paramount Capital Asset Management,
Inc.
Its Investment Manager
By: /s/ Lindsay A. Rosenwald
-------------------------------------
Name: Lindsay A. Rosenwald, M.D.
Title: Chairman
ARIES MASTER FUND II
By: Paramount Capital Asset Management,
Inc.
Its Investment Manager
By: /s/ Lindsay A. Rosenwald
-------------------------------------
Name: Lindsay A. Rosenwald, M.D.
Title: Chairman
LINDSAY A. ROSENWALD, M.D.
/s/ Lindsay A. Rosenwald
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Page 8 of 9
EXHIBIT A
JOINT FILING AGREEMENT
The undersigned hereby agree that the statement on Schedule 13G with
respect to the Common Stock, no par value per share, of Repligen Corp., dated as
of December 6, 2002, is, and any amendments thereto (including amendments on
Schedule 13D) signed by each of the undersigned shall be, filed on behalf of
each of us pursuant to and in accordance with the provisions of Rule 13d-1(k)
under the Securities Exchange Act of 1934.
Date: February 14, 2003 PARAMOUNT CAPITAL ASSET MANAGEMENT, INC.
By: /s/ Lindsay A. Rosenwald
-------------------------------------
Name: Lindsay A. Rosenwald, M.D.
Title: Chairman
ARIES DOMESTIC FUND, L.P.
By: Paramount Capital Asset Management,
Inc.
Its Investment Manager
By: /s/ Lindsay A. Rosenwald
-------------------------------------
Name: Lindsay A. Rosenwald, M.D.
Title: Chairman
ARIES MASTER FUND II
By: Paramount Capital Asset Management,
Inc.
Its Investment Manager
By: /s/ Lindsay A. Rosenwald
-------------------------------------
Name: Lindsay A. Rosenwald, M.D.
Title: Chairman
LINDSAY A. ROSENWALD, M.D.
/s/ Lindsay A. Rosenwald
----------------------------------------
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