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FORM 3 OMB APPROVAL
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OMB Number: 3235-0104
Estimated average burden
hours per response 0.5
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UNITED STATES SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES
Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934,
Section 17(a) of the Public Utility Holding Company Act of 1935 or
Section 30(f) of the Investment Company Act of 1940
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1. Name and Address of Reporting Person*
Cooper Hill Partners, L.P.
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(Last) (First) (Middle)
230 Park Avenue,
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(Street)
New York, NY 10169
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(City) (State) (Zip)
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2. Date of Event Requiring Statement (Month/Day/Year)
March 13, 2001
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3. IRS or Social Security Number of Reporting Person (Voluntary)
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4. Issuer Name and Ticker or Trading Symbol
DUSA Pharmaceuticals Inc. DUSA
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5. Relationship of Reporting Person to Issuer (Check all applicable)
[ ] Director
[x] 10% Owner
[ ] Officer (give title below)
[ ] Other (Specify below)
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6. If Amendment, Date of Original (Month/Day/Year)
March 29, 2001
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7. Individual or Joint/Group Filing (Check applicable line)
[] Form filed by One Reporting Person
[x] Form filed by More than One Reporting Person
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TABLE I--NON-DERIVATIVE SECURITIES BENEFICIALLY OWNED
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1. Title of Security 2. Amount of 3. Ownership 4. Nature of Indirect
(Instr. 4) Securities Form: Beneficial
Beneficially Direct (D) Ownership
Owned or Indirect (Instr. 5)
(Instr. 4) (I) (Instr. 5)
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common stock 292,400 I
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Nature of Indirect Beneficial Ownership (Intr. 4)
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Pursuant to an investment advisory contract, Cooper Hill Partners, L.P.
currently has the power to vote and dispose of the securities held for the
account of CLSP Overseas, Ltd. and, accordingly, may be deemed the "beneficial
owner" of such securities. Jeffrey Casdin is the managing member of Casdin
Capital, LLC, the general partner of Cooper Hill Partners, L.P.
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* If the Form is filed by more than one Reporting Person,
SEE instruction 5(b)(v).
Reminder: Report on a separate line for each class of
securities beneficially owned directly or indirectly.
(Print or Type Responses)
(Over)
SEC 1473 (7-96)
FORM 3 (continued)
TABLE II - DERIVATIVE SECURITIES BENEFICIALLY OWNED
(E.G., PUTS, CALLS, WARRANTS, OPTIONS, CONVERTIBLE SECURITIES)
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1. Title of Derivative Security 2. Date Exercisable and 3. Title and Amount
(Instr. 4) Expiration Date of Securities
(Month/Day/Year) Underlying
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Date Expiration Security
Exercisable Date (Instr. 4)
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Title Amount or
Number of
Shares
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4. Conversion or 5. Ownership Form of 6. Nature of Indirect
Exercise Price Derivative Security: Beneficial Ownership
of Derivative Direct (D) or (Instr. 5)
Security Indirect (I) (Instr. 5)
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**Intentional misstatements or omissions of facts constitute Federal
Criminal Violations. SEE 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Explanation of Responses:
Note 1 The Reporting Person may be considered a "group" as explained in Table I,
Item 4.: however each member of the group disclaims beneficial ownership of any
securities owned by such other persons.
If space is insufficient, SEE Instruction 6 for procedure.
DATED: June 15, 2001
/s/ Jeffrey Casdin
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Jeffrey Casdin
For Casdin Capital, LLC,
General Partner of Cooper Hill
Partners, L.P. Investment Manager of
CSLP Overseas, Ltd. and Individually