xenoport13g-030110.htm

-----BEGIN PRIVACY-ENHANCED MESSAGE----- Proc-Type: 2001,MIC-CLEAR Originator-Name: webmaster@www.sec.gov Originator-Key-Asymmetric: MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB MIC-Info: RSA-MD5,RSA, OrgR7J3OSLSSiSN+MWd/BPTPw/sti68JpSCMqOEnq53FG9Rhw+M0WgyaEJNdNRog vJtbbm1i/5shxxK/CWidIA== 0001013594-10-000286.txt : 20100301 0001013594-10-000286.hdr.sgml : 20100301 20100301165005 ACCESSION NUMBER: 0001013594-10-000286 CONFORMED SUBMISSION TYPE: SC 13G PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20100301 DATE AS OF CHANGE: 20100301 SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: XENOPORT INC CENTRAL INDEX KEY: 0001130591 STANDARD INDUSTRIAL CLASSIFICATION: PHARMACEUTICAL PREPARATIONS [2834] IRS NUMBER: 943330837 STATE OF INCORPORATION: DE FISCAL YEAR END: 1230 FILING VALUES: FORM TYPE: SC 13G SEC ACT: 1934 Act SEC FILE NUMBER: 005-81461 FILM NUMBER: 10645238 BUSINESS ADDRESS: STREET 1: 3410 CENTRAL EXPRESSWAY CITY: SANTA CLARA STATE: CA ZIP: 95051 BUSINESS PHONE: 4086167200 MAIL ADDRESS: STREET 1: 3410 CENTRAL EXPRESSWAY CITY: SANTA CLARA STATE: CA ZIP: 95051 FILED BY: COMPANY DATA: COMPANY CONFORMED NAME: Luxor Capital Group, LP CENTRAL INDEX KEY: 0001316580 IRS NUMBER: 201394199 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13G BUSINESS ADDRESS: STREET 1: 767 FIFTH AVENUE STREET 2: 19TH FLOOR CITY: NEW YORK STATE: NY ZIP: 10153 BUSINESS PHONE: 212-763-8000 MAIL ADDRESS: STREET 1: 767 FIFTH AVENUE STREET 2: 19TH FLOOR CITY: NEW YORK STATE: NY ZIP: 10153 SC 13G 1 xenoport13g-030110.htm MARCH 1, 2010 xenoport13g-030110.htm

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

SCHEDULE 13G

(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 13d-2(b)

(AMENDMENT NO. )*

XenoPort, Inc.

(Name of Issuer)

Common Stock, $0.001 par value

(Title of Class of Securities)

98411C100

(CUSIP Number)

February 19, 2010

(Date of Event which Requires Filing of this Statement)

Check the appropriate box to designate the rule

pursuant to which this Schedule is filed:

[ ] Rule 13d-1(b)

[x] Rule 13d-1(c)

[ ] 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).

(Continued on the Following Pages)

CUSIP No. 98411C100

1.NAME OF REPORTING PERSONS

I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

Luxor Capital Partners, LP

2.CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*

(a)[x]

(b)[ ]

3.SEC USE ONLY

4.CITIZENSHIP OR PLACE OF ORGANIZATION

Delaware

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH

REPORTING PERSON WITH

5.SOLE VOTING POWER

6.SHARED VOTING POWER

859,490

7.SOLE DISPOSITIVE POWER

8.SHARED DISPOSITIVE POWER

859,490

9.AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH

REPORTING PERSON

859,490

10.CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11)

EXCLUDES CERTAIN SHARES*[ ]

11.PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

2.8%

12.TYPE OF REPORTING PERSON*

*SEE INSTRUCTIONS BEFORE FILLING OUT!

CUSIP No. 98411C100

1.NAME OF REPORTING PERSONS

I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

Luxor Spectrum, LLC

2.CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*

(a)[x]

(b)[ ]

3.SEC USE ONLY

4.CITIZENSHIP OR PLACE OF ORGANIZATION

Delaware

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH

REPORTING PERSON WITH

5.SOLE VOTING POWER

6.SHARED VOTING POWER

32,677

7.SOLE DISPOSITIVE POWER

8.SHARED DISPOSITIVE POWER

32,677

9.AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH

REPORTING PERSON

32,677

10.CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11)

EXCLUDES CERTAIN SHARES*[ ]

11.PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

0.1%

12.TYPE OF REPORTING PERSON*

*SEE INSTRUCTIONS BEFORE FILLING OUT!

CUSIP No. 98411C100

1.NAME OF REPORTING PERSONS

I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

Luxor Wavefront, LP

2.CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*

(a)[x]

(b)[ ]

3.SEC USE ONLY

4.CITIZENSHIP OR PLACE OF ORGANIZATION

Delaware

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH

REPORTING PERSON WITH

5.SOLE VOTING POWER

6.SHARED VOTING POWER

316,785

7.SOLE DISPOSITIVE POWER

8.SHARED DISPOSITIVE POWER

316,785

9.AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH

REPORTING PERSON

316,785

10.CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11)

EXCLUDES CERTAIN SHARES*[ ]

11.PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

1.0%

12.TYPE OF REPORTING PERSON*

*SEE INSTRUCTIONS BEFORE FILLING OUT!

CUSIP No. 98411C100

1.NAME OF REPORTING PERSONS

I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

Luxor Capital Partners Offshore Master Fund, LP

2.CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*

(a)[x]

(b)[ ]

3.SEC USE ONLY

4.CITIZENSHIP OR PLACE OF ORGANIZATION

Cayman Islands

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH

REPORTING PERSON WITH

5.SOLE VOTING POWER

6.SHARED VOTING POWER

1,432,824

7.SOLE DISPOSITIVE POWER

8.SHARED DISPOSITIVE POWER

1,432,824

9.AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH

REPORTING PERSON

1,432,824

10.CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11)

EXCLUDES CERTAIN SHARES*[ ]

11.PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

4.7%

12.TYPE OF REPORTING PERSON*

*SEE INSTRUCTIONS BEFORE FILLING OUT!

CUSIP No. 98411C100

1.NAME OF REPORTING PERSONS

I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

Luxor Capital Partners Offshore, Ltd.

2.CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*

(a)[x]

(b)[ ]

3.SEC USE ONLY

4.CITIZENSHIP OR PLACE OF ORGANIZATION

Cayman Islands

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH

REPORTING PERSON WITH

5.SOLE VOTING POWER

6.SHARED VOTING POWER

1,432,824

7.SOLE DISPOSITIVE POWER

8.SHARED DISPOSITIVE POWER

1,432,824

9.AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH

REPORTING PERSON

1,432,824

10.CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11)

EXCLUDES CERTAIN SHARES*[ ]

11.PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

4.7%

12.TYPE OF REPORTING PERSON*

*SEE INSTRUCTIONS BEFORE FILLING OUT!

CUSIP No. 98411C100

1.NAME OF REPORTING PERSONS

I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

Luxor Spectrum Offshore Master Fund, LP

2.CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*

(a)[x]

(b)[ ]

3.SEC USE ONLY

4.CITIZENSHIP OR PLACE OF ORGANIZATION

Cayman Islands

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH

REPORTING PERSON WITH

5.SOLE VOTING POWER

6.SHARED VOTING POWER

286,534

7.SOLE DISPOSITIVE POWER

8.SHARED DISPOSITIVE POWER

286,534

9.AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH

REPORTING PERSON

286,534

10.CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11)

EXCLUDES CERTAIN SHARES*[ ]

11.PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

0.9%

12.TYPE OF REPORTING PERSON*

*SEE INSTRUCTIONS BEFORE FILLING OUT!

CUSIP No. 98411C100

1.NAME OF REPORTING PERSONS

I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

Luxor Spectrum Offshore, Ltd.

2.CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*

(a)[x]

(b)[ ]

3.SEC USE ONLY

4.CITIZENSHIP OR PLACE OF ORGANIZATION

Cayman Islands

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH

REPORTING PERSON WITH

5.SOLE VOTING POWER

6.SHARED VOTING POWER

286,534

7.SOLE DISPOSITIVE POWER

8.SHARED DISPOSITIVE POWER

286,534

9.AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH

REPORTING PERSON

286,534

10.CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11)

EXCLUDES CERTAIN SHARES*[ ]

11.PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

0.9%

12.TYPE OF REPORTING PERSON*

*SEE INSTRUCTIONS BEFORE FILLING OUT!

CUSIP No. 98411C100

1.NAME OF REPORTING PERSONS

I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

Luxor Capital Group, LP

2.CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*

(a)[x]

(b)[ ]

3.SEC USE ONLY

4.CITIZENSHIP OR PLACE OF ORGANIZATION

Delaware

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH

REPORTING PERSON WITH

5.SOLE VOTING POWER

6.SHARED VOTING POWER

2,963,927

7.SOLE DISPOSITIVE POWER

8.SHARED DISPOSITIVE POWER

2,963,927

9.AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH

REPORTING PERSON

2,963,927

10.CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11)

EXCLUDES CERTAIN SHARES*[ ]

11.PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

9.7%

12.TYPE OF REPORTING PERSON*

*SEE INSTRUCTIONS BEFORE FILLING OUT!

CUSIP No. 98411C100

1.NAME OF REPORTING PERSONS

I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

Luxor Management, LLC

2.CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*

(a)[x]

(b)[ ]

3.SEC USE ONLY

4.CITIZENSHIP OR PLACE OF ORGANIZATION

Delaware

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH

REPORTING PERSON WITH

5.SOLE VOTING POWER

6.SHARED VOTING POWER

2,963,927

7.SOLE DISPOSITIVE POWER

8.SHARED DISPOSITIVE POWER

2,963,927

9.AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH

REPORTING PERSON

2,963,927

10.CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11)

EXCLUDES CERTAIN SHARES*[ ]

11.PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

9.7%

12.TYPE OF REPORTING PERSON*

*SEE INSTRUCTIONS BEFORE FILLING OUT!

CUSIP No. 98411C100

1.NAME OF REPORTING PERSONS

I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

LCG Holdings, LLC

2.CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*

(a)[x]

(b)[ ]

3.SEC USE ONLY

4.CITIZENSHIP OR PLACE OF ORGANIZATION

Delaware

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH

REPORTING PERSON WITH

5.SOLE VOTING POWER

6.SHARED VOTING POWER

2,928,310

7.SOLE DISPOSITIVE POWER

8.SHARED DISPOSITIVE POWER

2,928,310

9.AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH

REPORTING PERSON

2,928,310

10.CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11)

EXCLUDES CERTAIN SHARES*[ ]

11.PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

9.6%

12.TYPE OF REPORTING PERSON*

*SEE INSTRUCTIONS BEFORE FILLING OUT!

CUSIP No. 98411C100

1.NAME OF REPORTING PERSONS

I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

Christian Leone

2.CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*

(a)[x]

(b)[ ]

3.SEC USE ONLY

4.CITIZENSHIP OR PLACE OF ORGANIZATION

United States

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH

5.SOLE VOTING POWER

6.SHARED VOTING POWER

2,963,927

7.SOLE DISPOSITIVE POWER

8.SHARED DISPOSITIVE POWER

2,963,927

9.AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH

REPORTING PERSON

2,963,927

10.CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11)

EXCLUDES CERTAIN SHARES*[ ]

11.PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

9.7%

12.TYPE OF REPORTING PERSON*

IN, HC

*SEE INSTRUCTIONS BEFORE FILLING OUT!

This Schedule 13G reflects the beneficial ownership of the Reporting Persons (as defined below) as of February 19, 2010.

ITEM 1(a). NAME OF ISSUER:

XenoPort, Inc. (the "Issuer")

ITEM 1(b). ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES:

3410 Central Expressway,

Santa Clara, California 95051

ITEM 2(a). NAME OF PERSON FILING:

The names of the persons filing this statement on Schedule 13G are (collectively, the “Reporting Persons”):

·	Luxor Capital Partners, LP, a Delaware limited partnership (the “Onshore Fund”);

·	Luxor Spectrum, LLC, a Delaware limited liability company (the “Spectrum Onshore Fund”);

·	Luxor Wavefront, LP, a Delaware limited partnership (the “Wavefront Fund”);

·	Luxor Capital Partners Offshore Master Fund, LP, a Cayman Islands limited partnership (the “Offshore Master Fund”);

·	Luxor Capital Partners Offshore, Ltd., a Cayman Islands exempted company (the “Offshore Feeder Fund”);

·	Luxor Spectrum Offshore Master Fund, LP, a Cayman Islands limited Partnership (the “Spectrum Offshore Master Fund”);

·	Luxor Spectrum Offshore, Ltd., a Cayman Islands exempted company (the “Spectrum Offshore Feeder Fund”);

·	Luxor Capital Group, LP, a Delaware limited partnership (“Luxor Capital Group”);

·	Luxor Management, LLC, a Delaware limited liability company (“Luxor Management”);

·	LCG Holdings, LLC, a Delaware limited liability company (“LCG Holdings”); and

·	Christian Leone, a United States citizen (“Mr. Leone”).

Luxor Capital Group acts as the investment manager of the Onshore Fund, the Spectrum Onshore Fund, the Wavefront Fund, the Offshore Master Fund, the Offshore Feeder Fund, the Spectrum Offshore Master Fund and the Spectrum Offshore Feeder Fund (collectively, the “Funds”) and to an account it separately manages (the “Separately Managed Account”). The Offshore Master Fund is a subsidiary of the Offshore Feeder Fund, and the Spectrum Offshore Master Fund is a subsidiary of the Spectrum Offshore Feeder Fund. Luxor Management is the general partner of Luxor Capital Group. Mr. Leone is the managing member of Luxor Management. LCG Holdings is the general partner of the Onshore Fund, the Wavefront Fund, the Offshore Master Fund, the Spectrum Offshore Master Fund, and the managing member of the Spectrum Onshore Fund. Mr. Leone is the managing member of LCG Holdings.

Luxor Capital Group, Luxor Management and Mr. Leone may each be deemed to have voting and dispositive power with respect to the shares of Common Stock (as defined below) held by the Funds and the Separately Managed Account. LCG Holdings may be deemed to have voting and dispositive power with respect to the shares of Common Stock held by the Onshore Fund, the Spectrum Onshore Fund, the Wavefront Fund, the Offshore Master Fund and the Spectrum Offshore Master Fund.

ITEM 2(b). ADDRESS OF PRINCIPAL BUSINESS OFFICE OR, IF NONE, RESIDENCE:

The business address of each of the Onshore Fund, the Spectrum Onshore Fund, the Wavefront Fund, Luxor Capital Group, Luxor Management, LCG Holdings and Mr. Leone is 767 Fifth Avenue, 19th Floor, New York, New York 10153.

The business address of each of the Offshore Master Fund, the Offshore Feeder Fund, the Spectrum Offshore Master Fund and the Spectrum Offshore Feeder Fund is c/o M&C Corporate Services Limited, P.O. Box 309 GT, Ugland House, South Church Street, George Town, Grand Cayman, Cayman Islands.

ITEM 2(c). CITIZENSHIP:

Mr. Leone is a citizen of the United States.

Each of the Spectrum Onshore Fund, Luxor Management and LCG Holdings is a limited liability company formed under the laws of the State of Delaware.

Each of the Onshore Fund, the Wavefront Fund, and Luxor Capital Group is a limited partnership formed under the laws of the State of Delaware.

Each of the Offshore Feeder Fund and the Spectrum Offshore Feeder Fund is a company formed under the laws of the Cayman Islands.

Each of the Offshore Master Fund and the Spectrum Offshore Master Fund is a limited partnership formed under the laws of the Cayman Islands.

ITEM 2(d). TITLE OF CLASS OF SECURITIES:

Common Stock, $0.001 par value (the “Common Stock”)

ITEM 2(e). CUSIP NUMBER:

98411C100

ITEM 3. IF THIS STATEMENT IS FILED PURSUANT TO RULE 13d-1(b),

OR 13d-2(b) OR (c), CHECK WHETHER THE PERSON FILING IS

(a) [ ] Broker or dealer registered under Section 15 of the Exchange Act.

(b) [ ] Bank as defined in Section 3(a)(6) of the Exchange Act.

(d) [ ] Investment company registered under Section 8 of the Investment Company Act.

(e) [ ] An investment adviser in accordance with Rule 13d-1(b)(1)(ii)(E).

(f) [ ] An employee benefit plan or endowment fund in accordance with Rule 13d-1(b)(1)(ii)(F).

(g) [ ] A parent holding company or control person in accordance with Rule 13d-1(b)(1)(ii)(G).

(h) [ ] A savings association as defined in Section 3(b) of the Federal Deposit Insurance Act.

(i) [ ] A church plan that is excluded from the definition of an investment company under Section 3(c)(14) of the Investment Company Act;

(j) [ ] Group, in accordance with Rule 13d-1(b)(1)(ii)(J).

If this statement is filed pursuant to Rule 13d-1(c), check this box [x]

ITEM 4. OWNERSHIP.

Provide the following information regarding the aggregate number and

percentage of the class of securities of the issuer identified in Item 1.

(a) Amount beneficially owned:

(i) The Onshore Fund individually beneficially owns 859,490 shares of Common Stock.

(ii) The Spectrum Onshore Fund individually beneficially owns 32,677 shares of Common Stock.

(iii) The Wavefront Fund individually beneficially owns 316,785 shares of Common Stock.

(iv) The Offshore Master Fund individually beneficially owns 1,432,824 shares of Common Stock. The Offshore Feeder Fund, as the owner of a controlling interest in the Offshore Master Fund, may be deemed to beneficially own the shares of Common Stock held by the Offshore Master Fund.

(v) The Spectrum Offshore Master Fund individually beneficially owns 286,534 shares of Common Stock. The Spectrum Offshore Feeder Fund, as the owner of a controlling interest in the Spectrum Offshore Master Fund, may be deemed to beneficially own the shares of Common Stock held by the Spectrum Offshore Master Fund.

(vi) Luxor Capital Group, as the investment manager of the Funds, may be deemed to beneficially own the 2,928,310 shares of Common Stock beneficially owned by them, and an additional 35,617 shares of Common Stock held in the Separately Managed Account.

(vii) Luxor Management and Mr. Leone may each be deemed to be the beneficial owners of the 2,963,927 shares of Common Stock beneficially owned by Luxor Capital Group.

(viii) LCG Holdings may be deemed to be the beneficial owner of the 2,928,310 shares of Common Stock owned by the Onshore Fund, the Spectrum Onshore Fund, the Wavefront Fund, the Offshore Master Fund and the Spectrum Offshore Master Fund.

(ix) Mr. Leone may be deemed to be the beneficial owner of the 2,928,310 shares of Common Stock beneficially owned LCG Holdings.

(x) Collectively, the Reporting Persons beneficially own 2,963,927 shares of Common Stock.

(b)	Percent of Class:

(i) The Onshore Fund's individual beneficial ownership of 859,490 shares of Common Stock represents 2.8% of all of the outstanding shares of Common Stock based on the 30,433,601 shares of Common Stock reported as outstanding as of February 1, 2010 in the Issuer’s Form 10-K for the fiscal year ended December 31, 2009 filed on February 26, 2010.

(ii) The Spectrum Onshore Fund’s individual beneficial ownership of 32,677 shares of Common Stock represents 0.1% of all of the outstanding shares of Common Stock.

(iii) The Wavefront Fund’s individual beneficial ownership of 316,785 shares of Common Stock represents 1.0% of all of the outstanding shares of Common Stock.

(iv) Each of the Offshore Master Fund’s and the Offshore Feeder Fund’s individual beneficial ownership of 1,432,824 shares of Common Stock represents 4.7% of all of the outstanding shares of Common Stock.

(v) Each of the Spectrum Offshore Fund’s and the Spectrum Offshore Feeder Fund’s individual beneficial ownership of 286,534 shares of Common Stock represents 0.9% of all of the outstanding shares of Common Stock.

(vi) LCG Holdings’ beneficial ownership of the 2,928,310 shares of Common Stock represents 9.6% of all of the outstanding shares of Common Stock.

(vii) Luxor Capital Group’s, Luxor Management’s and Mr. Leone’s beneficial ownership of 2,963,927 shares of Common Stock represents 9.7% of all of the outstanding shares of Common Stock.

(viii) Collectively, the Reporting Persons’ beneficial ownership of 2,963,927 shares of Common Stock represents 9.7% of all of the outstanding shares of Common Stock.

(i)	Sole power to vote or to direct the vote of Common Stock:

Not applicable.

(ii)	Shared power to vote or to direct the vote of Common Stock:

The Onshore Fund, Luxor Capital Group, LCG Holdings, Luxor Management and Mr. Leone have shared power to vote or direct the vote of the 859,490 shares of Common Stock individually beneficially owned by the Onshore Fund.

The Spectrum Onshore Fund, Luxor Capital Group, LCG Holdings, Luxor Management and Mr. Leone have shared power to vote or direct the vote of the 32,677 shares of Common Stock individually beneficially owned by the Spectrum Onshore Fund.

The Wavefront Fund, Luxor Capital Group, LCG Holdings, Luxor Management and Mr. Leone have shared power to vote or direct the vote of the 316,785 shares of Common Stock individually beneficially owned by the Wavefront Fund.

The Offshore Master Fund, the Offshore Feeder Fund, Luxor Capital Group, LCG Holdings, Luxor Management and Mr. Leone have shared power to vote or direct the vote of the 1,432,824 shares of Common Stock individually beneficially owned by the Offshore Master Fund.

The Spectrum Offshore Master Fund, the Spectrum Offshore Feeder Fund, Luxor Capital Group, LCG Holdings, Luxor Management and Mr. Leone have shared power to vote or direct the vote of the 286,534 shares of Common Stock individually beneficially owned by the Spectrum Offshore Master Fund.

Luxor Capital Group, Luxor Management and Mr. Leone have shared power to vote or direct the vote of the 35,617 shares of Common Stock held in the Separately Managed Account.

(iii)

Sole power to dispose or to direct the disposition of Common Stock:

Not applicable.

(iv)	Shared power to dispose or to direct the disposition of Common Stock:

The Onshore Fund, Luxor Capital Group, LCG Holdings, Luxor Management and Mr. Leone have shared power to dispose or direct the disposition of the 859,490 shares of Common Stock individually beneficially owned by the Onshore Fund.

The Spectrum Onshore Fund, Luxor Capital Group, LCG Holdings, Luxor Management and Mr. Leone have shared power to dispose or direct the disposition of the 32,677 shares of Common Stock individually beneficially owned by the Spectrum Onshore Fund.

The Wavefront Fund, Luxor Capital Group, LCG Holdings, Luxor Management and Mr. Leone have shared power to dispose or direct the disposition of the 316,785 shares of Common Stock individually beneficially owned by the Wavefront Fund.

The Offshore Master Fund, the Offshore Feeder Fund, Luxor Capital Group, LCG Holdings, Luxor Management and Mr. Leone have shared power to dispose or direct the disposition of the 1,432,824 shares of Common Stock individually beneficially owned by the Offshore Master Fund.

The Spectrum Offshore Master Fund, the Spectrum Offshore Feeder Fund, Luxor Capital Group, LCG Holdings, Luxor Management and Mr. Leone have shared power to dispose or direct the disposition of the 286,534 shares of Common Stock individually beneficially owned by the Spectrum Offshore Master Fund.

Luxor Capital Group, Luxor Management and Mr. Leone have shared power to dispose or direct the disposition of the 35,617 shares of Common Stock held in the Separately Managed Account.

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 Persons have ceased to be the beneficial owner of more than five percent of the class of securities, check the following [ ].

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.

The Offshore Master Fund is a subsidiary of the Offshore Feeder Fund. The shares owned directly by the Offshore Master Fund may be deemed to be owned indirectly by the Offshore Feeder Fund. The Spectrum Offshore Master Fund is a subsidiary of the Spectrum Offshore Feeder Fund. The shares owned directly by the Spectrum Offshore Master Fund may be deemed to be owned indirectly by the Spectrum Offshore Feeder Fund.

ITEM 8. IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP.

See Exhibit B.

ITEM 9. NOTICE OF DISSOLUTION OF GROUP.

Not applicable.

ITEM 10. CERTIFICATION.

By signing below the undersigned certifies that, to the best of its or his 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.

SIGNATURE

After reasonable inquiry and to the best of its knowledge and belief,

each of the undersigned certifies that the information set forth in this statement is true, complete, and correct.

Dated: March 1, 2010

LUXOR CAPITAL PARTNERS, LP

By: LCG Holdings, LLC, as General Partner

By: /s/ Norris Nissim

Norris Nissim,

General Counsel

LUXOR SPECTRUM, LLC

By: LCG Holdings, LLC, as Managing Member

By: /s/ Norris Nissim

Norris Nissim,

General Counsel

LUXOR WAVEFRONT, LP

By: LCG Holdings, LLC, as General Partner

By: /s/ Norris Nissim

Norris Nissim,

General Counsel

LUXOR CAPITAL PARTNERS OFFSHORE MASTER FUND, LP

By: LCG Holdings, LLC, as General Partner

By: /s/ Norris Nissim

Norris Nissim,

General Counsel

LUXOR CAPITAL PARTNERS OFFSHORE, LTD.

By: Luxor Capital Group, LP, as investment manager

By: /s/ Norris Nissim

Norris Nissim,

General Counsel

LUXOR SPECTRUM OFFSHORE MASTER FUND, LP

By: LCG Holdings, LLC, as General Partner

By: /s/ Norris Nissim

Norris Nissim,

General Counsel

LUXOR SPECTRUM OFFSHORE, LTD.

By: Luxor Capital Group, LP, as investment manager

By: /s/ Norris Nissim

Norris Nissim,

General Counsel

LUXOR CAPITAL GROUP, LP

By: Luxor Management, LLC, as General Partner

By: /s/ Norris Nissim

Norris Nissim,

General Counsel

LCG HOLDINGS, LLC

By: /s/ Norris Nissim

Norris Nissim,

General Counsel

LUXOR MANAGEMENT, LLC

By: /s/ Norris Nissim

Norris Nissim,

General Counsel

/s/ Adam Miller

Adam Miller, as Attorney-in-Fact

For Christian Leone

EXHIBIT A

JOINT FILING AGREEMENT

The undersigned hereby agree that the statement on Schedule 13G with respect to the Common Stock of XenoPort, Inc. dated as of March 1, 2010, and any amendments thereto signed by each of the undersigned shall be, filed on behalf of each of the undersigned pursuant to and in accordance with the provisions of Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended.

Dated: March 1, 2010

LUXOR CAPITAL PARTNERS, LP

By: LCG Holdings, LLC, as General Partner

By: /s/ Norris Nissim

Norris Nissim,

General Counsel

LUXOR SPECTRUM, LLC

By: LCG Holdings, LLC, as Managing Member

By: /s/ Norris Nissim

Norris Nissim,

General Counsel

LUXOR WAVEFRONT, LP

By: LCG Holdings, LLC, as General Partner

By: /s/ Norris Nissim

Norris Nissim,

General Counsel

LUXOR CAPITAL PARTNERS OFFSHORE MASTER FUND, LP

By: LCG Holdings, LLC, as General Partner

By: /s/ Norris Nissim

Norris Nissim,

General Counsel

LUXOR CAPITAL PARTNERS OFFSHORE, LTD.

By: Luxor Capital Group, LP, as investment manager

By: /s/ Norris Nissim

Norris Nissim,

General Counsel

LUXOR SPECTRUM OFFSHORE MASTER FUND, LP

By: LCG Holdings, LLC, as General Partner

By: /s/ Norris Nissim

Norris Nissim,

General Counsel

LUXOR SPECTRUM OFFSHORE, LTD.

By: Luxor Capital Group, LP, as investment manager

By: /s/ Norris Nissim

Norris Nissim,

General Counsel

LUXOR CAPITAL GROUP, LP

By: Luxor Management, LLC, as General Partner

By: /s/ Norris Nissim

Norris Nissim,

General Counsel

LCG HOLDINGS, LLC

By: /s/ Norris Nissim

Norris Nissim,

General Counsel

LUXOR MANAGEMENT, LLC

By: /s/ Norris Nissim

Norris Nissim,

General Counsel

/s/ Adam Miller

Adam Miller, as Attorney-in-Fact

For Christian Leone

EXHIBIT B

Luxor Capital Partners, LP

Luxor Spectrum, LLC

Luxor Wavefront, LP

Luxor Capital Partners Offshore Master Fund, LP

Luxor Capital Partners Offshore, Ltd.

Luxor Spectrum Offshore Master Fund, LP

Luxor Spectrum Offshore, Ltd.

Luxor Capital Group, LP

LCG Holdings, LLC

Luxor Management, LLC

Christian Leone

EXHIBIT C

POWER OF ATTORNEY

The undersigned hereby makes, constitutes and appoints each of Adam Miller and Elena Cimador as the undersigned’s true and lawful authorized representative, attorney-in-fact and agent, each with the power individually to execute for and on behalf of the undersigned and to file with and deliver to the United States Securities and Exchange Commission and any other authority or party required or entitled to receive the same: (a) any Forms 3, 4 and 5, and any amendments thereto, in accordance with Section 16(a) of the Securities Exchange Act of 1934, as amended (the “1934 Act”), and the rules promulgated thereunder; and (b) any Schedule 13D or Schedule 13G, and any amendments thereto, on behalf of the undersigned in accordance with Section 13 of the 1934 Act and the rules promulgated thereunder.

The undersigned also hereby grants to each such attorney-in-fact the full power and authority to do and perform all and every act and thing whatsoever requisite, necessary and proper to be done in the exercise of any of the rights and powers herein granted, hereby ratifying and confirming all that such attorney-in-fact shall lawfully do or cause to be done by virtue of this power of attorney and the rights and powers herein granted. The undersigned acknowledges that each of the foregoing attorneys-in-fact, in serving in such capacity at the request of the undersigned, is not assuming any of the undersigned's responsibilities to comply with Section 16 or Section 13 or any other provision of the 1934 Act or the rules promulgated thereunder.

This Power of Attorney shall remain in full force and effect until earlier revoked by the undersigned in a signed writing delivered to the foregoing attorneys-in-fact.

IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be executed as of January 20, 2006.

/s/ Christian Leone

Christian Leone

ACKNOWLEDGEMENT IN NEW YORK STATE

STATE OF NEW YORK )

: ss.:

COUNTY OF NEW YORK)

On January 20, 2006, before me, the undersigned personally appeared, Christian Leone, personally known to me or proved to me on the basis of satisfactory evidence to be the individual whose name is subscribed to the within instrument and acknowledged to me that he executed the same in his capacity, and that by his signature on the instrument, the individual, or the person upon behalf of which the individual acted, executed the instrument.

/s/ Michael J. Sadler

Michael J. Sadler

Notary Public

[Notary Stamp and Seal]

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