-----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, H1T8HNtQyxoyUhqBQlciTpnITPppFUt8Gy3SzL4/fUS/qqC0wfqnGZAyDXIS8zKE JGHTnPpClUyCUwaXxUXrPw== 0000950129-08-000881.txt : 20080213 0000950129-08-000881.hdr.sgml : 20080213 20080213163448 ACCESSION NUMBER: 0000950129-08-000881 CONFORMED SUBMISSION TYPE: SC 13G/A PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20080213 DATE AS OF CHANGE: 20080213 GROUP MEMBERS: AIM ADVISORS, INC. GROUP MEMBERS: AIM CAPITAL MANAGEMENT, INC. GROUP MEMBERS: INVESCO INSTITUTIONAL (N.A.), INC. GROUP MEMBERS: INVESCO NATIONAL TRUST COMPANY GROUP MEMBERS: POWERSHARES CAPITAL MANAGEMENT LLC GROUP MEMBERS: POWERSHARES CAPITAL MGMT IRELAND LTD SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: TETRA TECH INC CENTRAL INDEX KEY: 0000831641 STANDARD INDUSTRIAL CLASSIFICATION: SERVICES-ENGINEERING SERVICES [8711] IRS NUMBER: 954148514 STATE OF INCORPORATION: DE FISCAL YEAR END: 0930 FILING VALUES: FORM TYPE: SC 13G/A SEC ACT: 1934 Act SEC FILE NUMBER: 005-43035 FILM NUMBER: 08605443 BUSINESS ADDRESS: STREET 1: 3475 EAST FOOTHILL BOULEVARD CITY: PASADENA STATE: CA ZIP: 91107 BUSINESS PHONE: 6263514664 MAIL ADDRESS: STREET 1: 3475 EAST FOOTHILL BOULEVARD CITY: PASADENA STATE: CA ZIP: 91107 FILED BY: COMPANY DATA: COMPANY CONFORMED NAME: Invesco Ltd. CENTRAL INDEX KEY: 0000914208 STANDARD INDUSTRIAL CLASSIFICATION: INVESTMENT ADVICE [6282] IRS NUMBER: 980557567 STATE OF INCORPORATION: D0 FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13G/A BUSINESS ADDRESS: STREET 1: 1360 PEACHTREE ST. NE CITY: ATLANTA STATE: GA ZIP: 30309 BUSINESS PHONE: 404-892-0896 MAIL ADDRESS: STREET 1: 1360 PEACHTREE ST. NE CITY: ATLANTA STATE: GA ZIP: 30309 FORMER COMPANY: FORMER CONFORMED NAME: INVESCO PLC/LONDON/ DATE OF NAME CHANGE: 20070529 FORMER COMPANY: FORMER CONFORMED NAME: AMVESCAP PLC/LONDON/ DATE OF NAME CHANGE: 19991221 FORMER COMPANY: FORMER CONFORMED NAME: AMVESCAP /LONDON/ DATE OF NAME CHANGE: 19971121 SC 13G/A 1 h53615nsc13gza.txt AMENDMENT TO SCHEDULE 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1)* Tetra Tech, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 88162G103 (CUSIP Number) December 31, 2007 (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). SCHEDULE 13G CUSIP No. 88162G103 - -------------------------------------------------------------------------------- 1. Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only). Invesco Ltd. AIM Advisors, Inc. AIM Capital Management, Inc. PowerShares Capital Mgmt Ireland LTD PowerShares Capital Management LLC Invesco Institutional (N.A.), Inc. Invesco National Trust Company - -------------------------------------------------------------------------------- 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 Invesco Ltd. - Bermuda AIM Advisors, Inc. - US AIM Capital Management, Inc. - US PowerShares Capital Mgmt Ireland LTD - Ireland PowerShares Capital Management LLC - US Invesco Institutional (N.A.), Inc. - US Invesco National Trust Company - US - -------------------------------------------------------------------------------- 5. Sole Voting Power 6,069,555: Such shares are held by the following entities in the respective amounts listed: AIM Advisors, Inc. - 727,694 AIM Capital Management, Inc. - 626,094 PowerShares Capital Mgmt Ireland LTD - 10,087 PowerShares Capital Management LLC - 4,265,330 Invesco Institutional (N.A.), Inc. - 439,800 Invesco National Trust Company - 550 ----------------------------------------------------------- 6. Shared Voting Power Number of Shares -0- Beneficially Owned ----------------------------------------------------------- by Each Reporting 7. Sole Dispositive Power 6,069,555: Such shares are held Person With by the following entities in the respective amounts listed: AIM Advisors, Inc. - 727,694 AIM Capital Management, Inc. - 626,094 PowerShares Capital Mgmt Ireland LTD - 10,087 PowerShares Capital Management LLC - 4,265,330 Invesco Institutional (N.A.), Inc. - 439,800 Invesco National Trust Company N.A. - 550 ----------------------------------------------------------- 8. Shared Dispositive Power -0- - -------------------------------------------------------------------------------- 9. Aggregate Amount Beneficially Owned by Each Reporting Person: 6,069,555 - -------------------------------------------------------------------------------- 10. Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) N/A - -------------------------------------------------------------------------------- 11. Percent of Class Represented by Amount in Row (9) 10.38% - -------------------------------------------------------------------------------- 12. Type of Reporting Person (See Instructions) IA, HC. See Items 2 and 3 of this statement. - -------------------------------------------------------------------------------- SCHEDULE 13G Item 1(a) Name of Issuer: Tetra Tech, Inc. Item 1(b) Address of Issuer's Principal Executive Offices: 3475 East Foothill Boulevard Pasadena, CA 91107 United States Item 2(a) Name of Person Filing: Invesco Ltd. In accordance with Securities and Exchange Commission Release No. 34-39538 (January 12, 1998), this statement on Schedule 13G or amendment thereto is being filed by Invesco Ltd. ("Invesco"), a Bermuda Company, on behalf of itself and its subsidiaries listed in Item 4 of the cover of this statement. Invesco through such subsidiaries provides investment management services to institutional and individual investors worldwide. Executive officers and directors of Invesco or its subsidiaries may beneficially own shares of the securities of the issuer to which this statement relates (the "Shares"), and such Shares are not reported in this statement. Invesco and its subsidiaries disclaim beneficial ownership of Shares beneficially owned by any of their executive officers and directors. Each of Invesco's direct and indirect subsidiaries also disclaim beneficial ownership of Shares beneficially owned by Invesco and any other subsidiary. Item 2(b) Address of Principal Business Office: 1360 Peachtree Street NE Atlanta, GA 30309 United States Item 2(c) Citizenship: See the response to Item 2(a) of this statement. Item 2(d) Title of Class of Securities: Common Stock, $.01 par value per share Item 2(e) CUSIP Number: 88162G103 Item 3 If this statement is filed pursuant to ss240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a: (e) [X] An investment adviser in accordance with section 240.13d-1(b)(1)(ii)(E) (g) [X] A parent holding company or control person in accordance with section 240.13d-1(b)(1)(ii)(G) As noted in Item 2 above, Invesco is making this filing on behalf of its subsidiaries listed herein. Each of these entities is either an investment adviser registered with the United States Securities and Exchange Commission under Section 203 of the Investment Advisers Act of 1940, as amended, or under similar laws of other jurisdictions. Invesco is a holding company. Item 4 Ownership: Please see responses to Items 5-8 on the cover of this statement, which are incorporated herein by reference. 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 [ ] 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: Please see Item 3 of this statement, which is incorporated herein by reference. Item 8 Identification and Classification of Members of the Group: N/A Item 9 Notice of Dissolution of a 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. 02/09/2008 Date Invesco Ltd. By: /s/ Lisa Brinkley ------------------------------------ Lisa Brinkley Global Compliance Director -----END PRIVACY-ENHANCED MESSAGE-----