FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN 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(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person * COOPER HILL PARTNERS LLC   2. Issuer Name and Ticker or Trading Symbol DUSA PHARMACEUTICALS INC [DUSA] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director __X__ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 767 THIRD AVENUE 3. Date of Earliest Transaction (Month/Day/Year) 09/10/2007 (Street) NEW YORK, NY 10017 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock, par value $.01 per share (1) 09/10/2007   S   1,000,000 D $ 1.9501 1,783,400 I See footnote (1)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
COOPER HILL PARTNERS LLC 767 THIRD AVENUE NEW YORK, NY 10017		X

Signatures

On behalf of CLSP, L.P., CLSP II, L.P., CLSP/SBS I, L.P., and CLSP/SBS II, L.P., Cooper Hill Partners, L.L.C. and Cooper Hill Partners, L.P.		09/12/2007
**Signature of Reporting Person		Date
/s/ Peter Freer		09/12/2007
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	This filing reflects a transfer between and among the reporting persons and does not reflect a change in the overall beneficial ownership of the reporting persons as previously filed.
Remarks: CLSP, L.P. ("CLSP"), CLSP II, L.P. ("CLSP II"), CLSP/SBS I, L.P. ("CLSP/SBS I"), and CLSP/SBS II, L.P. ("CLSP/SBS II") are  each private investment partnerships, the sole general partner of which is Cooper Hill Partners, LLC. As the sole general  partner of CLSP, CLSP II, CLSP/SBS I, and CLSP/SBS II, Cooper Hill Partners, LLC has the power to vote and dispose of the  Securities owned by each of CLSP, CLSP II, CLSP/SBS I, and CLSP/SBS II and, accordingly, may be deemed the "beneficial  owner" of such Securities.  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.  Cooper Hill Partners, LLC disclaims beneficial ownership of the reported securities  except to the extent of its pecuniary interest therein.

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