SC 13G 1 simpson.txt SIMPSON MANUFACTURING Securities and Exchange Commission Washington, D. C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No. ) Simpson Manufacturing Co Inc Common Stock CUSIP Number 829073105 Date of Event Which Requires Filing of this Statement: December 31, 2006 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) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - CUSIP No. 829073105 1) Name of reporting person: ClearBridge Advisors, LLC Tax Identification No.: 01-0846058 2) Check the appropriate box if a member of a group: a) x b) n/a 3) SEC use only 4) Place of organization: DE Number of shares beneficially owned by each reporting person with: 5) Sole voting power: - 0 - 6) Shared voting power: 2,461,249 7) Sole dispositive power: - 0 - 8) Shared dispositive power: 2,686,079 9) Aggregate amount beneficially owned by each reporting person: 2,686,079 10) Check if the aggregate amount in row (9) excludes certain shares: n/a 11) Percent of class represented by amount in row (9): 5.58% 12) Type of reporting person: IA CUSIP No. 829073105 1) Name of reporting person: ClearBridge Asset Management, Inc. Tax Identification No.: 13-3440564 2) Check the appropriate box if a member of a group: a) x b) n/a 3) SEC use only 4) Place of organization: DE Number of shares beneficially owned by each reporting person with: 5) Sole voting power: - 0 - 6) Shared voting power: 1,940 7) Sole dispositive power: - 0 - 8) Shared dispositive power: 60,580 9) Aggregate amount beneficially owned by each reporting person: 60,580 10) Check if the aggregate amount in row (9) excludes certain shares: n/a 11) Percent of class represented by amount in row (9): 0.13% 12) Type of reporting person: IA CUSIP No. 829073105 1) Name of reporting person: Smith Barney Fund Management LLC Tax Identification No.: 13-2616913 2) Check the appropriate box if a member of a group: a) x b) n/a 3) SEC use only 4) Place of organization: DE Number of shares beneficially owned by each reporting person with: 5) Sole voting power: - 0 - 6) Shared voting power: 24,500 7) Sole dispositive power: - 0 - 8) Shared dispositive power: 24,500 9) Aggregate amount beneficially owned by each reporting person: 24,500 10) Check if the aggregate amount in row (9) excludes certain shares: n/a 11) Percent of class represented by amount in row (9): 0.05% 12) Type of reporting person: IA - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Item 1a) Name of issuer: Simpson Manufacturing Co Inc Item 1b) Address of issuer s principal executive offices: 4120 Dublin Blvd Suite 400 Dublin, CA 94568 Item 2a) Name of person filing: ClearBridge Advisors, LLC ClearBridge Asset Management, Inc. Smith Barney Fund Management LLC Item 2b) Address of principal business office: 399 Park Avenue New York, NY 10022 Item 2c) Citizenship: ClearBridge Advisors, LLC Delaware Limited Liability Corporation ClearBridge Asset Management, Inc. Delaware Corporation Smith Barney Fund Management LLC Delaware Limited Liability Corporation Item 2d) Title of class of securities: Common Stock Item 2e) CUSIP number: 829073105 Item 3) If this statement is filed pursuant to Rule 13d-1(b), or 13d 2(b), check whether the person filing is a: (a) [ ] Broker or dealer 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)(6) of the Act. (d) [ ] Investment Company registered under Section 8 of the Investment Company Act. (e) [ ] Investment Adviser registered under Section 203 of the Investment Advisers Act of 1940. (f) [ ] Employee Benefit Plan, Pension Fund which is subject to ERISA of 1974 or Endowment Funds; see 240.13d-1(b)(ii)(F). (g) [ ] Parent holding company, in accordance with 240.13d-1(b)(ii)(G), (h) [X] Group, in accordance with 240.13d-1(b)(1)(ii)(J). Item 4) Ownership: (a) Amount beneficially owned: 2,771,159 (b) Percent of Class: 5.75% (c) Number of shares as to which such person has: (i) sole power to vote or to direct the vote: 0 (ii) shared power to vote or to direct the vote: 2,487,689 (iii) sole power to dispose or to direct the disposition of: 0 (iv) shared power to dispose or to direct the disposition of: 2,771,159 Item 5) Ownership of Five Percent or less of a class: n/a Item 6) Ownership of more than Five Percent on behalf of another person: n/a Item 7) Identification and classification of the subsidiary which acquired the security being reported on by the parent holding company: n/a Item 8) Identification and classification of members of the group: ClearBridge Advisors, LLC ClearBridge Asset Management, Inc. Smith Barney Fund Management LLC Item 9) Notice of dissolution of group: n/a 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. -------------------------------- Date February 8, 2007 ClearBridge Advisors, LLC By: /s/ Leonard P. Larrabee Leonard P. Larrabee, Secretary ClearBridge Asset Management, Inc. By: /s/ Leonard P. Larrabee Leonard P. Larrabee, Secretary Smith Barney Fund Management LLC By: /s/ Michael Kocur Michael Kocur, Assistant Secretary Exhibit A Joint Filing Agreement -------------------------------------- This Joint Filing Agreement confirms the agreement by and among the undersigned that the Schedule 13G is filed on behalf of (i) each member of the group identified in Item 8 and (ii) the other reporting person(s) identified in Item 6 that may be deemed to beneficially own more than five percent of the issuer s outstanding equity securities. ClearBridge Advisors, LLC By: /s/ Leonard P. Larrabee Leonard P. Larrabee, Secretary ClearBridge Asset Management, Inc. By: /s/ Leonard P. Larrabee Leonard P. Larrabee, Secretary Smith Barney Fund Management LLC By: /s/ Michael Kocur Michael Kocur, Assistant Secretary