Ownership Submission
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
OMB APPROVAL
OMB Number: 3235-0287
Expires: January 31, 2005
Estimated average burden hours per response... 0.5

(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.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number. SEC 1474 (9-02)

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.

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

Potential persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB number.