SECURITIES AND EXCHANGE COMMISSION
Washington, DC 20549
SCHEDULE 13G/A
(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. 3)
REGENERON PHARMACEUTICALS, INC
----------------------------------------------------------------------------
(Name of Issuer)
Common Stock, $0.001 par value
----------------------------------------------------------------------------
(Title of Class of Securities)
75886F 10 7
----------------------------------------------------------------------------
(CUSIP Number)
December 31, 2003
----------------------------------------------------------------------------
(Date of Event Which Requires Filing of this Statement)
Check the appropriate box to designate the rule pursuant to which this Schedule
is filed:
o Rule 13d-1(b)
x Rule 13d-1(c)
o 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 on 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).
1 of 5
CUSIP No. 75886F 10 7 13G/A
1 NAME OF REPORTING PERSONS
I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)
Leonard S. Schleifer, M.D., Ph.D.
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) o
(b) o
3 SEC USE ONLY
4 CITIZENSHIP OR PLACE OF ORGANIZATION
United States of America
NUMBER OF 5 SOLE VOTING POWER
SHARES
BENEFICIALLY 2,616,950
OWNED BY
EACH
REPORTING
PERSON WITH
6 SHARED VOTING POWER
0
7 SOLE DISPOSITIVE POWER
2,616,950
8 SHARED DISPOSITIVE POWER
0
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
2,616,950
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN
SHARES* [X]
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
4.7%
12 TYPE OF REPORTING PERSON*
IN
*SEE INSTRUCTIONS BEFORE FILLING OUT
SCHEDULE 13G/A
--------------
CUSIP No. 75886F 10 7
Item 1. (a) Name of Issuer
Regeneron Pharmaceuticals, Inc.
Item 1. (b) Address of Issuer's Principal Executive Offices
777 Old Saw Mill River Road
Tarrytown, New York 10591
Item 2. (a) Name of Person Filing
Leonard S. Schleifer, M.D., Ph.D.
2 of 5
Item 2. (b) Address of Principal Business Office or, if none, residence
777 Old Saw Mill River Road
Tarrytown, New York 10591
Item 2. (c) Citizenship
United States of America
Item 2. (d) Title of Class of Securities
Common Stock, par value $.001 per share
Item 2. (e) CUSIP Number
75886F 10 7
Item 3. Not Applicable.
Item 4. Ownership
(a) Amount Beneficially Owned
Regeneron Pharmaceuticals, Inc. (the "Issuer") has
two classes of outstanding capital stock, Common Stock, par
value $.001 per share (the "Common Stock"), holders of which
are entitled to one vote per share, and Class A Stock, par
value $.001 per share ("Class A Stock"), holders of which are
entitled to ten votes per share. The Class A Stock is not
registered pursuant to Section 12 of the Securities Exchange
Act of 1934. Each share of Class A Stock may be converted at
the option of the holder at any time into one fully paid and
non-assessable share of Common Stock. In addition, pursuant to
the terms of the Issuer's Certificate of Incorporation, each
share of Class A Stock will be automatically converted into
one fully paid and non-assessable share of Common Stock upon
the transfer of Class A Stock whether by sale, exchange, gift,
operation of law, pledge, or otherwise, or upon any transfer
of the power to vote such shares by proxy, to a person who is
not a "Permitted Transferee" (as such term is defined in the
Issuer's Certificate of Incorporation).
The Reporting Person is the beneficial owner of
1,710,790 shares of Class A Stock and 111,290 shares of Common
Stock. In addition, the Reporting Person is the beneficial
owner of 794,870 stock options which have vested (or will vest
in the next sixty days) and were granted under the Issuer's
Long-Term Incentive Plans. Each Stock Option entitles the
Reporting Person to purchase one share of Common Stock at an
exercise price determined in accordance with the Issuer's
Long-Term Incentive Plans.
Harriet Schleifer, the wife of the Reporting Person,
is the record owner, as custodian for their children, Adam and
David Schleifer, of 58,550 shares of Class A Stock and 1,800
shares of Common Stock. The Reporting Person disclaims
beneficial ownership of such shares.
(b) Percent of Class
4.7%
(c) Number of Shares as to which person has
(i) Sole power to vote or to direct the vote 2,616,950
(ii) Shared power to vote or to direct the vote 0
(iii) Sole power to dispose or to direct the disposition 2,616,950
(iv) Shared power to dispose or to direct the disposition 0
3 of 5
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
[ X ].
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.
Not Applicable.
Item 8. Identification and Classification of Members of the Group.
Not Applicable.
Item 9. Notice and 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
connection with or as a participant in any transaction having
that purpose or effect.
4 of 5
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: February 18, 2004
By:
/s/ Leonard Schleifer
----------------------
Leonard S. Schleifer, M.D., Ph.D.
5 of 5
End of Filing