SC 13G/A 1 pdl123111.FINAL.txt UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No.1)* PDL Biopharma, Inc. ------------------------------------------------------------------------------ (Name of Issuer) Common Stock ------------------------------------------------------------------------------ (Title of Class of Securities) 69329Y104 ------------------------------ (CUSIP Number) December 31, 2011 ------------------------------------------------------------------------------ (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedule is filed: [x ] Rule 13d-1(b) [ ] 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 the disclosures provided in a prior cover page. The information required in 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). CUSIP NO. 69329Y104 --------- ------------------------------------------------------------------------------ 1 NAMES OF REPORTING PERSONS. I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY). Arrowstreet Capital, Limited Partnership (04-3472863) ------------------------------------------------------------------------------ 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS) (a) [ ] (b) [ ] ------------------------------------------------------------------------------ 3 SEC USE ONLY ------------------------------------------------------------------------------ 4 CITIZENSHIP OR PLACE OF ORGANIZATION Massachusetts ------------------------------------------------------------------------------ 5 SOLE VOTING POWER 1,867,421 NUMBER OF ---------------------------------------------------------------- SHARES BENEFICIALLY 6 SHARED VOTING POWER 0 OWNED BY ---------------------------------------------------------------- EACH REPORTING 7 SOLE DISPOSITIVE POWER 2,847,695 PERSON WITH ---------------------------------------------------------------- 8 SHARED DISPOSITIVE POWER 0 ------------------------------------------------------------------------------ 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,847,695 ------------------------------------------------------------------------------ 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)[ ] ------------------------------------------------------------------------------ 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 2.0% ------------------------------------------------------------------------------ 12 TYPE OF REPORTING PERSON (SEE INSTRUCTIONS) IA ------------------------------------------------------------------------------ ------------------------------------------------------------------------------ ------------------------------------------------------------------------------ ------------------------------------------------------------------------------ ------------------------------------------------------------------------------ ------------------------------------------------------------------------------ 1 NAMES OF REPORTING PERSONS. I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY). Arrowstreet GP, Inc. (04-34809901) ------------------------------------------------------------------------------ 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS) (a) [ ] (b) [ ] ------------------------------------------------------------------------------ 3 SEC USE ONLY ------------------------------------------------------------------------------ 4 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware ------------------------------------------------------------------------------ 5 SOLE VOTING POWER 1,867,421 NUMBER OF ---------------------------------------------------------------- SHARES BENEFICIALLY 6 SHARED VOTING POWER 0 OWNED BY ---------------------------------------------------------------- EACH REPORTING 7 SOLE DISPOSITIVE POWER 2,847,695 PERSON WITH ---------------------------------------------------------------- 8 SHARED DISPOSITIVE POWER 0 ------------------------------------------------------------------------------ 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,847,695 ------------------------------------------------------------------------------ 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)[ ] ------------------------------------------------------------------------------ 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 2.0% ------------------------------------------------------------------------------ 12 TYPE OF REPORTING PERSON (SEE INSTRUCTIONS) CO ------------------------------------------------------------------------------ ------------------------------------------------------------------------------ ------------------------------------------------------------------------------ ------------------------------------------------------------------------------ ------------------------------------------------------------------------------ Item 1 (a) Name of Issuer: PDL Biopharma, Inc. (b) Address of Issuer's Principal Executive Offices: 932 Southwood Boulevard Incline Village, Nevada 89451 Item 2 (a) Name of Person Filing: The reporting persons are: Arrowstreet Capital, Limited Partnership ("ASC") Arrowstreet GP, Inc. ("ASC GP") (b) Address of Principal Business Office or, if none, Residence: The address of each reporting person is: 200 Clarendon Street, 30th Floor Boston, MA 02116 (c) Citizenship: ASC Massachusetts limited partnership ASC GP Delaware Corporation (d) Title of Class of Securities: This Schedule 13G report relates to the common stock (the Common Stock) of PDL Biopharma, Inc. (the Issuer). (e) CUSIP Number: 69329Y104 Item 3. Description of Person Filing: (a) [ ] Broker or dealer registered under section 15 of the Act (b) [ ] Bank as defined in section 3(a)(6) of the Act (c) [ ] Insurance company as defined in section 3(a)(19) of the Act (d) [ ] Investment company registered under section 8 of the Investment Company Act of 1940 (e) [X] An investment adviser in accordance with Rule 13d-1(b)(1)(ii)(E); (ASC) (f) [ ] An employee benefit plan or endowment fund in accordance with Rule 13d-1(b)(1)(ii)(F); (g) [X] A parent holding company or control person in accordance with Rule 13d-1(b)(1)(ii)(G); (ASC GP) (h) [ ] A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813); (i) [ ] A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (j) [ ] Group, in accordance with Rule 13d-1(b)(1)(ii)(J). Item 4. Ownership: (a) Amount beneficially owned: As of December 31, 2011, ASC, in its capacity as an investment adviser, may be deemed to beneficially own 2,847,695 shares of Common Stock of the Issuer which are held of record by clients of ASC (the Client Shares). ASC GP, as the managing member of Arrowstreet Capital Holding LLC, which is the sole member of Arrowstreet PBJ LLC, which is the general partner of ASC, may also be deemed to beneficially own the Client Shares. ASC GP is the ultimate indirect controlling entity of ASC. (b) Percent of class: ASC and ASC GP 2.0% The ownership percentages above are based on an aggregate of 139,834,559 shares of Common Stock outstanding, as reported by the Issuer on Form 10Q for the quarter ended September 30, 2011, and filed with the SEC on November 9, 2011. (c) Number of shares as to which the person has: (i) Sole power to vote or to direct the vote: 1,867,421 (ASC and ASC GP) (ii) Shared power to vote or to direct the vote 0 (ASC and ASC GP) (iii) Sole power to dispose or to direct the disposition of: 2,847,695 (ASC and ASC GP) (iv) Shared power to dispose or to direct the disposition of 0 (ASC and ASC GP) 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 person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following: [X] 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: Not applicable Item 8. Identification and Classification of Members of the Group: Not applicable Item 9. Notice of Dissolution of a Group Not applicable Item 10. Certification By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and 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 my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct. ARROWSTREET CAPITAL, LIMITED PARTNERSHIP By: Arrowstreet PBJ LLC, its General Partner By: Arrowstreet Capital Holding LLC, its Sole Member By: Arrowstreet GP, Inc., its Managing Member Dated: February 13, 2012 By: /s/ Vaithehi Muttulingam Name: Vaithehi Muttulingam Title: Chief Compliance Officer ARROWSTREET GP, INC. Dated: February 13, 2012 By: /s/ Vaithehi Muttulingam Name: Vaithehi Muttulingam Title: Chief Compliance Officer JOINT FILING AGREEMENT Pursuant to Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, as amended, the undersigned hereby agree that only one statement containing the information required by Schedule 13G need be filed with respect to the ownership by each of the undersigned of the shares of Common Stock of PDL Biopharma, Inc. This Agreement may be executed in any number of counterparts, each of which shall be deemed an original. EXECUTED as of this 11th day of February, 2011. ARROWSTREET CAPITAL, LIMITED PARTNERSHIP By: Arrowstreet PBJ LLC, its General Partner By: Arrowstreet Capital Holding LLC, its Sole Member By: Arrowstreet GP, Inc., its Managing Member By: /s/ Vaithehi Muttulingam Name: Vaithehi Muttulingam Title: Chief Compliance Officer ARROWSTREET GP, INC. By: /s/ Vaithehi Muttulingam Name: Vaithehi Muttulingam Title: Chief Compliance Officer