<SEC-DOCUMENT>0001361570-25-000008.txt : 20250415
<SEC-HEADER>0001361570-25-000008.hdr.sgml : 20250415
<ACCEPTANCE-DATETIME>20250415112028
ACCESSION NUMBER:		0001361570-25-000008
CONFORMED SUBMISSION TYPE:	SCHEDULE 13D
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20250415
DATE AS OF CHANGE:		20250415

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			TETRA TECHNOLOGIES INC
		CENTRAL INDEX KEY:			0000844965
		STANDARD INDUSTRIAL CLASSIFICATION:	CRUDE PETROLEUM & NATURAL GAS [1311]
		ORGANIZATION NAME:           	01 Energy & Transportation
		EIN:				742148293
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13D
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-44995
		FILM NUMBER:		25838169

	BUSINESS ADDRESS:	
		STREET 1:		24955 INTERSTATE 45 NORTH
		CITY:			THE WOODLANDS
		STATE:			TX
		ZIP:			77380
		BUSINESS PHONE:		2813671983

	MAIL ADDRESS:	
		STREET 1:		24955 INTERSTATE 45 NORTH
		CITY:			THE WOODLANDS
		STATE:			TX
		ZIP:			77380

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			PICTET ASSET MANAGEMENT SA
		CENTRAL INDEX KEY:			0001361570
		ORGANIZATION NAME:           	
		EIN:				000000000
		STATE OF INCORPORATION:			V8
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SCHEDULE 13D

	BUSINESS ADDRESS:	
		STREET 1:		60 ROUTE DE ACACIAS
		CITY:			GENEVA 73
		STATE:			V8
		ZIP:			1211
		BUSINESS PHONE:		011 44 207 847 5040

	MAIL ADDRESS:	
		STREET 1:		60 ROUTE DE ACACIAS
		CITY:			GENEVA 73
		STATE:			V8
		ZIP:			1211
</SEC-HEADER>
<DOCUMENT>
<TYPE>SCHEDULE 13D
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
<XML>
<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/schedule13D" xmlns:com="http://www.sec.gov/edgar/common">
  <headerData>
    <submissionType>SCHEDULE 13D</submissionType>
    <filerInfo>
      <filer>
        <filerCredentials>
          <cik>0001361570</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>



    </filerInfo>
  </headerData>
  <formData>
    <coverPageHeader>
      <securitiesClassTitle>COMMON STOCK</securitiesClassTitle>
      <dateOfEvent>04/15/2025</dateOfEvent>
      <previouslyFiledFlag>true</previouslyFiledFlag>
      <issuerInfo>
        <issuerCIK>0000844965</issuerCIK>
        <issuerCUSIP>88162G103</issuerCUSIP>
        <issuerName>TETRA TECHNOLOGIES INC</issuerName>
        <address>
          <com:street1>24955 INTERSTATE 45 NORTH</com:street1>
          <com:city>THE WOODLANDS</com:city>
          <com:stateOrCountry>TX</com:stateOrCountry>
          <com:zipCode>77380</com:zipCode>
        </address>
      </issuerInfo>
      <authorizedPersons>
        <notificationInfo>
          <personName>Mathieu Cornu</personName>
          <personPhoneNum>0041583234506</personPhoneNum>
          <personAddress>
            <com:street1>Route des Acacias 60</com:street1>
            <com:city>Geneva</com:city>
            <com:stateOrCountry>V8</com:stateOrCountry>
            <com:zipCode>1211</com:zipCode>
          </personAddress>
        </notificationInfo>
      </authorizedPersons>
    </coverPageHeader>
    <reportingPersons>
      <reportingPersonInfo>
        <reportingPersonCIK>0001361570</reportingPersonCIK>
        <reportingPersonNoCIK>N</reportingPersonNoCIK>
        <reportingPersonName>PICTET ASSET MANAGEMENT SA</reportingPersonName>
        <fundType>WC</fundType>
        <legalProceedings>N</legalProceedings>
        <citizenshipOrOrganization>V8</citizenshipOrOrganization>
        <soleVotingPower>14458349.00</soleVotingPower>
        <sharedVotingPower>0.00</sharedVotingPower>
        <soleDispositivePower>14458349.00</soleDispositivePower>
        <sharedDispositivePower>0.00</sharedDispositivePower>
        <aggregateAmountOwned>14458349.00</aggregateAmountOwned>
        <isAggregateExcludeShares>N</isAggregateExcludeShares>
        <percentOfClass>5.3</percentOfClass>
        <typeOfReportingPerson>IA</typeOfReportingPerson>
      </reportingPersonInfo>
    </reportingPersons>
    <items1To7>
      <item1>
        <securityTitle>COMMON STOCK</securityTitle>
        <issuerName>TETRA TECHNOLOGIES INC</issuerName>
        <issuerPrincipalAddress>
          <com:street1>24955 INTERSTATE 45 NORTH</com:street1>
          <com:city>THE WOODLANDS</com:city>
          <com:stateOrCountry>TX</com:stateOrCountry>
          <com:zipCode>77380</com:zipCode>
        </issuerPrincipalAddress>
      </item1>
      <item2>
        <filingPersonName>Pictet Asset Management SA</filingPersonName>
        <principalBusinessAddress>60 ROUTE DES ACACIAS
GENEVA 73 211
SWITZERLAND
</principalBusinessAddress>
        <principalJob>Investment Adviser
</principalJob>
        <hasBeenConvicted>No</hasBeenConvicted>
        <convictionDescription>No</convictionDescription>
        <citizenship>GENEVA (SWITZERLAND)</citizenship>
      </item2>
      <item3>
        <fundsSource>The Reporting Person acquired the shares of common stock of Tetra Tech Inc. on behalf of its institutional clients who are managed on a discretionary basis. The purchase cost is approximately USD 412,134,333. The source of the funds comes from our institutional clients' assets

The funds used for the acquisition did not involve any financing or borrowing.</fundsSource>
      </item3>
      <item4>
        <transactionPurpose>The Reporting Person acquired shares of Tetra Tech Inc. as part of its investment strategy, considering the clarity and robustness of the issuer's long-term strategy; the functioning and calibre of governance structures and effective leadership; the financial strength and performance of issuers and the fair valuation of underlying securities; and financially-material sustainability risks &amp; opportunities. The Reporting Person is therefore actively engaging with the Issuer to discuss and promote initiatives that align with these business practices.

This engagement is part of the Reporting Person's broader strategy to support companies in enhancing their approach, thereby potentially improving long-term shareholder value. As such, the Reporting Person may seek to influence the Issuer's policies and practices through discussions with the Boards and management of the companies in which we invest.

The Reporting Person does not currently have any plans or proposals that would result in a change in control of the Issuer, nor does it intend to acquire additional shares for the purpose of gaining control. However, the Reporting Person reserves the right to change its intentions and take any actions that it deems appropriate in light of its ongoing engagement and evaluation of the Issuer's policies and practices.</transactionPurpose>
      </item4>
      <item5>
        <percentageOfClassSecurities>Pictet Asset management SA holds 14,458,349 shares of Tetra Tech Inc., which represents 5.3% of the total number of shares.
</percentageOfClassSecurities>
        <numberOfShares>Pictet Asset Management SA has the Sole power to vote on 13,288,970 out of the 14,458,349 shares under management.</numberOfShares>
        <transactionDesc>In the past sixty days, the following transactions have been done :

Date	        Type	Quantity	Price	Exchange
04.11.25	BUY	        732	        29.44	The NASDAQ Stock Exchange
04.11.25	BUY	        879	        29.59	The NASDAQ Stock Exchange
04.11.25	BUY	        8'356	29.45	The NASDAQ Stock Exchange
04.11.25	SELLL	1'493	29.45	The NASDAQ Stock Exchange
04.11.25	BUY	        1'869	29.59	The NASDAQ Stock Exchange
04.07.25	SELLL	34'002	27.92	The NASDAQ Stock Exchange
04.02.25	SELLL	3'791	29.24	The NASDAQ Stock Exchange
03.31.25	SELLL	422	        28.76	The NASDAQ Stock Exchange
03.31.25	SELLL	14'240	29.25	The NASDAQ Stock Exchange
03.31.25	SELLL	25'157	28.76	The NASDAQ Stock Exchange
03.28.25	BUY	        16'813	29.50	The NASDAQ Stock Exchange
03.27.25	BUY	        110	        29.62	The NASDAQ Stock Exchange
03.27.25	BUY	        819	        29.49	The NASDAQ Stock Exchange
03.25.25	BUY	        1'080	29.50	The NASDAQ Stock Exchange
03.24.25	BUY	        1'804	29.32	The NASDAQ Stock Exchange
03.24.25	BUY	        901	        29.32	The NASDAQ Stock Exchange
03.24.25	BUY	        4'496	29.32	The NASDAQ Stock Exchange
03.24.25	BUY	        4'512	29.32	The NASDAQ Stock Exchange
03.24.25	BUY	        15'342	29.32	The NASDAQ Stock Exchange
03.24.25	BUY	        4'508	29.32	The NASDAQ Stock Exchange
03.24.25	BUY	        1'807	29.32	The NASDAQ Stock Exchange
03.21.25	BUY	        25'909	28.99	The NASDAQ Stock Exchange
03.20.25	BUY	        186	        29.75	The NASDAQ Stock Exchange
03.20.25	BUY	        1'448	29.75	The NASDAQ Stock Exchange
03.20.25	BUY	        847	        29.75	The NASDAQ Stock Exchange
03.20.25	BUY	        3'517	29.75	The NASDAQ Stock Exchange
03.20.25	BUY	        3'627	29.75	The NASDAQ Stock Exchange
03.20.25	BUY	        9'827	29.75	The NASDAQ Stock Exchange
03.20.25	BUY	        3'022	29.75	The NASDAQ Stock Exchange
03.20.25	BUY	        1'534	29.75	The NASDAQ Stock Exchange
03.20.25	SELLL	36'536	29.42	The NASDAQ Stock Exchange
03.20.25	BUY	        95'992	29.75	The NASDAQ Stock Exchange
03.19.25	BUY	        334	        30.24	The NASDAQ Stock Exchange
03.19.25	BUY	        334	        30.35	The NASDAQ Stock Exchange
03.19.25	BUY	        334	        29.97	The NASDAQ Stock Exchange
03.19.25	BUY	        452	        30.24	The NASDAQ Stock Exchange
03.19.25	BUY	        886	        30.35	The NASDAQ Stock Exchange
03.19.25	BUY	        436	        29.97	The NASDAQ Stock Exchange
03.19.25	BUY	        339	        30.24	The NASDAQ Stock Exchange
03.19.25	BUY	        364	        30.35	The NASDAQ Stock Exchange
03.19.25	BUY	        334	        29.97	The NASDAQ Stock Exchange
03.19.25	BUY	        841	        30.24	The NASDAQ Stock Exchange
03.19.25	BUY	        2'332	30.35	The NASDAQ Stock Exchange
03.19.25	BUY	        1'134	29.97	The NASDAQ Stock Exchange
03.19.25	BUY	        1'207	29.97	The NASDAQ Stock Exchange
03.19.25	BUY	        791	        30.24	The NASDAQ Stock Exchange
03.19.25	BUY	        2'469	30.35	The NASDAQ Stock Exchange
03.19.25	BUY	        3'372	29.97	The NASDAQ Stock Exchange
03.19.25	BUY	        1'800	30.24	The NASDAQ Stock Exchange
03.19.25	BUY	        6'933	30.35	The NASDAQ Stock Exchange
03.19.25	BUY	        694	        30.24	The NASDAQ Stock Exchange
03.19.25	BUY	        2'032	30.35	The NASDAQ Stock Exchange
03.19.25	BUY	        996	        29.97	The NASDAQ Stock Exchange
03.19.25	BUY	        468	        30.24	The NASDAQ Stock Exchange
03.19.25	BUY	        945	        30.35	The NASDAQ Stock Exchange
03.19.25	BUY	        465	        29.97	The NASDAQ Stock Exchange
03.19.25	BUY	        18'212	30.24	The NASDAQ Stock Exchange
03.19.25	BUY	        67'006	30.35	The NASDAQ Stock Exchange
03.19.25	BUY	        32'338	29.97	The NASDAQ Stock Exchange
03.18.25	SELLL	1'621	29.42	The NASDAQ Stock Exchange
03.18.25	SELLL	82'473	29.30	The NASDAQ Stock Exchange
03.17.25	SELLL	100'380	29.51	The NASDAQ Stock Exchange
03.11.25	BUY	        44'643	29.66	The NASDAQ Stock Exchange
03.10.25	SELLL	808	        30.35	The NASDAQ Stock Exchange
03.07.25	SELLL	41'709	29.29	The NASDAQ Stock Exchange
03.04.25	BUY	        1'510	28.40	The NASDAQ Stock Exchange
03.03.25	SELLL	581	        28.26	The NASDAQ Stock Exchange
02.26.25	SELLL	120	        29.64	The NASDAQ Stock Exchange
02.26.25	BUY	        826	        30.07	The NASDAQ Stock Exchange
02.24.25	BUY	        784	        30.24	The NASDAQ Stock Exchange
02.24.25	BUY	        1'657	30.24	The NASDAQ Stock Exchange
02.24.25	BUY	        828	        30.24	The NASDAQ Stock Exchange
02.24.25	BUY	        2'889	30.24	The NASDAQ Stock Exchange
02.24.25	BUY	        3'319	30.24	The NASDAQ Stock Exchange
02.24.25	BUY	        8'298	30.24	The NASDAQ Stock Exchange
02.24.25	BUY	        2'487	30.24	The NASDAQ Stock Exchange
02.24.25	BUY	        1'666	30.24	The NASDAQ Stock Exchange
02.24.25	BUY	        6'240	30.00	The NASDAQ Stock Exchange
02.21.25	SELLL	1'876	29.97	The NASDAQ Stock Exchange
02.20.25	BUY	        737	        30.40	The NASDAQ Stock Exchange
02.18.25	BUY	        39'433	31.08	The NASDAQ Stock Exchange
02.18.25	BUY	        59	        30.72	The NASDAQ Stock Exchange
02.18.25	BUY	        597	        30.72	The NASDAQ Stock Exchange
02.14.25	BUY	        55'718	30.77	The NASDAQ Stock Exchange
02.14.25	BUY	        569	        30.75	The NASDAQ Stock Exchange
</transactionDesc>
        <listOfShareholders>The securities reported herein come from the assets of our institutional clients who are managed by the Reporting Person on a discretionary basis. Consequently, our clients have the right to receive dividends and any proceeds from the sale of the Issuer's securities, in proportion to their respective managed assets.

The Reporting Person itself does not have any direct economic interest in the dividends or sale proceeds from the securities of Tetra Tech Inc., other than its entitlement to management fees and / or performance-based compensation, as agreed upon with its clients. The Reporting Person's role is limited to managing the investments in accordance with the investment objectives and strategies set forth by each of its institutional clients. </listOfShareholders>
        <date5PercentOwnership>Not Applicable</date5PercentOwnership>
      </item5>
      <item6>
        <contractDescription>The Reporting Person's exposure to Tetra Tech Inc. is solely through direct stock investments held by its managed institutional clients. There are no contracts, arrangements, understandings, or relationships with any third parties regarding the securities of Tetra Tech Inc., other than those arising from the ordinary course of discretionary management of our client assets.

The Reporting Person does not have any derivative positions, options, or other financial instruments related to the securities of the Issuer. Furthermore, there are no agreements or understandings that would influence the voting or disposition of these securities beyond the Reporting Person's discretionary investment authority as an asset manager.</contractDescription>
      </item6>
    </items1To7>
    <signatureInfo>
      <signaturePerson>
        <signatureReportingPerson>PICTET ASSET MANAGEMENT SA</signatureReportingPerson>
        <signatureDetails>
          <signature>Karine Valtanen</signature>
          <title>Karine Valtanen Global Head of Compliance</title>
          <date>04/15/2025</date>
        </signatureDetails>
      </signaturePerson>
    </signatureInfo>
  </formData>
</edgarSubmission>
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</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
