-----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, KKuvB+OxueRr8Kcznu0MtUZV7Sj9qwKA3bxTx/h91/jMkc1LR3g9rbJf0e+V55ea Ck29ySTvRYXim3UrRL+aFg== 0001047469-98-034207.txt : 19980911 0001047469-98-034207.hdr.sgml : 19980911 ACCESSION NUMBER: 0001047469-98-034207 CONFORMED SUBMISSION TYPE: SC 13G/A PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 19980910 SROS: NASD SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: TETRA TECHNOLOGIES INC CENTRAL INDEX KEY: 0000844965 STANDARD INDUSTRIAL CLASSIFICATION: INDUSTRIAL INORGANIC CHEMICALS [2810] IRS NUMBER: 742148293 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13G/A SEC ACT: SEC FILE NUMBER: 005-44995 FILM NUMBER: 98707003 BUSINESS ADDRESS: STREET 1: 25025 I-45N CITY: WOODLANDS STATE: TX ZIP: 77380 BUSINESS PHONE: 7133671983 MAIL ADDRESS: STREET 1: 25025 I-45 NORTH CITY: WOODLANDS STATE: TX ZIP: 77380 FILED BY: COMPANY DATA: COMPANY CONFORMED NAME: MONTGOMERY ASSET MANAGEMENT L P /CA CENTRAL INDEX KEY: 0000896160 STANDARD INDUSTRIAL CLASSIFICATION: [] IRS NUMBER: 943115321 STATE OF INCORPORATION: CA FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13G/A BUSINESS ADDRESS: STREET 1: 600 MONTGOMERY STREET CITY: SAN FRANCISCO STATE: CA ZIP: 94111 BUSINESS PHONE: 4156272400 MAIL ADDRESS: STREET 1: 600 MONTGOMERY ST CITY: SAN FRANCISCO STATE: CA ZIP: 94111 SC 13G/A 1 SCHEDULE 13G/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 3 )* ------ Tetra Technologies Inc. - -------------------------------------------------------------------------------- (Name of Issuer) COMMON STOCK - -------------------------------------------------------------------------------- (Title of Class of Securities) 88162F105 ---------------------------------- (CUSIP Number) Check the following box if a fee is being paid with this statement / /. (A fee is not required only if the filing person: (1) has a previous statement on file reporting beneficial ownership of more than five percent of the class of securities described in Item 1; and (2) has filed no amendment subsequent thereto reporting beneficial ownership of five percent or less of such class.) (See Rule 13d-7). *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). Tax ID # 74-2148293 CIK # 0000844965 This Form 13F is not filed with respect to holdings of affiliated managers, including Martingale Asset Management, L.P. and other affiliates of Commerzbank AG, as to which holdings investment discretion is disclaimed. Page 1 of 5 pages CUSIP No. 88162F105 13G Page 2 Of 5 --------- --- --- - ------------------------------------------------------------------------------- (1) Name of Reporting Person S.S. or I.R.S. identification nos. of above person MONTGOMERY ASSET MANAGEMENT, LLC 94-3273703 - ------------------------------------------------------------------------------- (2) Check the appropriate box if a member of a group (a) / / (b) / / - ------------------------------------------------------------------------------- (3) SEC Use Only - ------------------------------------------------------------------------------- (4) Citizenship or place of organization DELAWARE - ------------------------------------------------------------------------------- Number of (5) Sole voting power shares 621,500 (as of 8/31/98) beneficially -------------------------------------------------- owned by (6) Shared voting power each -0- reporting -------------------------------------------------- person (7) Sole dispositive power with 862,300 (as of 8/31/98) -------------------------------------------------- (8) Shared dispositive power -0- - ------------------------------------------------------------------------------- (9) Aggregate amount beneficially owned by each reporting person 862,300 (as of 8/31/98) - ------------------------------------------------------------------------------- (10) Check box if the aggregate amount in row (9) excludes certain shares* Not applicable - ------------------------------------------------------------------------------- (11) Percent of class represented by amount in row 9 6.34% (as of 8/31/98) - ------------------------------------------------------------------------------- (12) Type of reporting person* IA - ------------------------------------------------------------------------------- *See instructions Page 3 Of 5 --- --- ITEM 1. (a) Name of Issuer Tetra Technologies Inc. --------------------------------------------------------------------- (b) Address of Issuer's Principal Executive Offices 25025 I-45 North, The Woodlands, TX 77380 --------------------------------------------------------------------- ITEM 2. (a) Name of Person Filing MONTGOMERY ASSET MANAGEMENT, LLC --------------------------------------------------------------------- (b) Address of Principal Business Office 101 CALIFORNIA STREET, SAN FRANCISCO, CA 94111 --------------------------------------------------------------------- (c) Citizenship DELAWARE LIMITED LIABILITY COMPANY --------------------------------------------------------------------- (d) Title of Class of Securities Common Stock --------------------------------------------------------------------- (e) CUSIP Number 88162F105 --------------------------------------------------------------------- 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 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/ Investment Adviser registered under section 203 of the Investment Advisers Act of 1940 (f) / / Employee Benefit Plan, Pension Fund which is subject to the provisions of the Employee Retirement Income Security Act of 1974 or Endowment Fund; see Section 240.13d-1(b)(1)(ii)(F) (g) / / Parent Holding Company, in accordance with Section 240.13d-1(b)(ii)(G) (Note: See Item 7) (h) / / Group, in accordance with Section 240.13d-1(b)(1)(ii)(H) Page 4 Of 5 --- --- ITEM 4. OWNERSHIP (a) Amount beneficially owned: 862,300 (as of 8/31/98) --------------------------------------------------------------------------- (b) Percent of class: 6.34% (as of 8/31/98) --------------------------------------------------------------------------- (c) Number of shares as to which the person has: (i) Sole power to vote or to direct the vote 621,500 (as of 8/31/98) ----------------------------------------------------------------- (ii) Shared power to vote or to direct the vote -0- ----------------------------------------------------------------- (iii) Sole power to dispose or to direct the disposition of 862,300 (as of 8/31/98) ----------------------------------------------------------------- (iv) Shared power to dispose or to direct the disposition of -0- ----------------------------------------------------------------- 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 Not applicable ITEM 7. IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED THE SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY Not applicable Page 5 Of 5 --- --- ITEM 8. IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP Not applicable ITEM 9. NOTICE OF DISSOLUTION OF 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 in the ordinary course of business and were not acquired for the purpose of and do not have the effect of changing or influencing the control of the issuer of such securities and were not acquired in connection with or as a participant in any transaction having such purposes 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. 9/8/98 ---------------------------------------- Date /s/ Dana Schmidt ---------------------------------------- Signature DANA SCHMIDT, CORP. VP & PRINCIPAL ---------------------------------------- Name/Title -----END PRIVACY-ENHANCED MESSAGE-----