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 * BAUPOST GROUP LLC/MA   2. Issuer Name and Ticker or Trading Symbol FACET BIOTECH CORP [FACT] 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) 10 ST JAMES AVE, SUITE 1700 3. Date of Earliest Transaction (Month/Day/Year) 04/08/2010 (Street) BOSTON, MA 02116 4. If Amendment, Date Original Filed(Month/Day/Year) 09/08/2009 6. Individual or Joint/Group Filing(Check Applicable Line) ___ Form filed by One Reporting Person _X_ 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, $0.01 par value per share 04/08/2010   S   500,000 (1) D $ 26.96 1,500,000 (1) I (1) 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
BAUPOST GROUP LLC/MA 10 ST JAMES AVE SUITE 1700 BOSTON, MA 02116		X
SAK CORP 10 ST JAMES AVENUE STE 1700 BOSTON, MA 02116		X
KLARMAN SETH A 10 ST. JAMES AVE. SUITE 1700 BOSTON, MA 02116		X

Signatures

The Baupost Group, LLC, by /s/ Seth A. Klarman		04/12/2010
**Signature of Reporting Person		Date
SAK Corporation, by /s/ Seth A. Klarman		04/12/2010
**Signature of Reporting Person		Date
/s/ Seth A. Klarman		04/12/2010
**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 statement on Form 4 is being jointly filed by The Baupost Group, L.L.C. (Baupost), SAK Corporation and Seth A. Klarman. Baupost is a registered investment adviser under the Investment Advisers Act of 1940, as amended, and acts as an investment adviser to certain investment limited partnerships. Securities reported on this Form 4 as being beneficially owned by Baupost include securities held by such investment limited partnerships, for which Baupost is the general partner and investment adviser. SAK Corporation is the manager of Baupost. Mr. Klarman is the sole director and sole officer of SAK Corporation and a controlling person of Baupost. The reporting persons disclaim beneficial ownership of the securities except to the extent of their pecuniary interests therein.

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