SEC Form 4

FORM 4		UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5
X	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person* GLG Partners LP (Last) (First) (Middle) 1 CURZON STREET (Street) LONDON X0 W1J 5HB (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol OSCIENT PHARMACEUTICALS CORP [ OSCI ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director X 10% Owner Officer (give title below) Other (specify below)
	3. Date of Earliest Transaction (Month/Day/Year) 05/21/2009
	4. If Amendment, Date of Original Filed (Month/Day/Year)	6. Individual or Joint/Group Filing (Check Applicable Line) Form filed by One Reporting Person X Form filed by More than One Reporting Person

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 $0.10 ("Common Stock")	05/21/2009		S		785,616	D	$0.3016	73,923	I(1)(2)	See Footnotes(1)(2)

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 Securities Underlying Derivative Security (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: 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

1. Name and Address of Reporting Person* GLG Partners LP (Last) (First) (Middle) 1 CURZON STREET (Street) LONDON X0 W1J 5HB (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* GLG Partners LTD (Last) (First) (Middle) C/O GLG PARTNERS LP 1 CURZON STREET (Street) LONDON X0 W1J 5HB (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* GLG Partners, Inc. (Last) (First) (Middle) C/O GLG PARTNERS LP 1 CURZON STREET (Street) LONDON X0 W1J 5HB (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* GLG Market Neutral Fund (Last) (First) (Middle) C/O GLG PARTNERS LP 1 CURZON STREET (Street) LONDON X0 W1J 5HB (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

Explanation of Responses:

1. GLG Partners LP, an English limited partnership, acts as the investment manager for GLG Market Neutral Fund.

2. GLG Partners LP, an English limited partnership, acts as the investment manager of GLG Market Neutral Fund and may be deemed, as of the date hereof, to be the beneficial owner of the Issuer's securities or derivative securities held by GLG Market Neutral Fund. GLG Partners Limited, an English limited company, is the general partner of GLG Partners LP. GLG Partners, Inc. indirectly wholly owns GLG Partners Limited. GLG Partners LP, GLG Partners Limited and GLG Partners, Inc. do not hold directly any of the Issuer's securities or derivative securities with respect thereto, and disclaim any beneficial ownership of any of the Issuer's securities reported or excluded herein for purposes of Rule 16a-1(a) under the Securities Exchange Act of 1934, as amended, except for their pecuniary interest therein.

	GLG PARTNERS LP, By: GLG Partners Limited, as its General Partner, By: /s/ Victoria Parry, Senior Legal Counsel	05/26/2009
	GLG PARTNERS LP, By: GLG Partners Limited, as its General Partner, By: /s/ Emmanuel Roman, Managing Director	05/26/2009
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* 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).
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