Sec Form 4 Filing - TETRA TECHNOLOGIES INC @ CSI Compressco LP - 2017-02-14

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person TETRA TECHNOLOGIES INC 2. Issuer Name and Ticker or Trading Symbol CSI Compressco LP [ CCLP] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director X __ 10% Owner _____ Officer (give title below) X __ Other (specify below) Director by Deputization (8) (Last) (First) (Middle) 24955 INTERSTATE 45 NORTH, 3. Date of Earliest Transaction (MM/DD/YY) 02/14/2017 (Street) THE WOODLANDS, TX77380 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) _____ Form filed by One Reporting Person __ X __ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Series A Convertible Preferred Units ( 1 ) ( 2 ) ( 3 ) ( 4 ) 02/14/2017 A( 1 )( 2 )( 3 )( 4 )( 5 ) 24,255 ( 1 )( 2 )( 3 )( 4 ) ( 6 ) Common Units representing limited partner interests ( 1 ) ( 2 ) ( 3 ) ( 4 ) $ 11.43 913,007 I ( 7 ) see footnotes ( 1 ) ( 2 ) ( 3 ) ( 4 ) ( 7 ) ( 8 )

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other TETRA TECHNOLOGIES INC 24955 INTERSTATE 45 NORTH THE WOODLANDS, TX77380 X Director by Deputization (8) Compressco Field Services, L.L.C. 101 PARK AVENUE SUITE 1200 OKLAHOMA CITY, OK73102 X Director by Deputization (8) COMPRESSCO INC 101 PARK AVENUE SUITE 1200 OKLAHOMA CITY, OK73102 X Director by Deputization (8) CSI Compressco GP Inc 3809 S FM 1788 MIDLAND, TX79706 X Director by Deputization (8) Signatures Bass C. Wallace, Jr., Sr. Vice President and General Counsel of TETRA Technologies, Inc., a Delaware corporation 02/16/2017 Signature of Reporting Person Date Bass C. Wallace, Jr., Attorney-in-fact for Compressco Field Services, L.L.C., an Oklahoma limited liability company 02/16/2017 Signature of Reporting Person Date Bass C. Wallace, Jr., Attorney-in-fact for Compressco, Inc., a Delaware corporation 02/16/2017 Signature of Reporting Person Date Bass C. Wallace, Jr., General Counsel, Assistant Secretary, Assistant Treasurer of CSI Compressco GP Inc., a Delaware corporation 02/16/2017 Signature of Reporting Person Date

Explanation of Responses:

( 1 )On August 8, 2016, the Issuer entered into a Series A Preferred Unit Purchase Agreement (the "Purchase Agreement") with CSI Compressco Investment LLC ("CSI Investment") and the other purchasers party thereto (the "Purchasers"), whereby the Purchasers purchased 874,891 Series A Convertible Preferred Units representing limited partner interests in the Issuer (the "Preferred Units"). The Preferred Units were issued and sold to the Purchasers on August 8, 2016 (the "Closing"). The holders of the Preferred Units (each, a "Preferred Unitholder") will receive quarterly distributions in kind in additional Preferred Units, equal to an annual rate of 11.00% (2.75% per quarter), subject to certain adjustments. The additional 24,255 Preferred Units reported on this Form 4 were acquired by CSI Investment as quarterly, in kind distributions issued pursuant to the Purchase Agreement. A ratable portion of the Preferred Units will be converted each month over a period of thirty months beginning in the ( 2 )seventh calendar month following the Closing (each, a "Conversion Date"), subject to certain provisions that may delay or accelerate all or a portion of such monthly conversions. On each Conversion Date, the Preferred Units will convert into common units representing limited partner interests in the Partnership ("Common Units") in an amount equal to, with respect to each Preferred Unitholder, the number of Preferred Units held by such Preferred Unitholder divided by the number of Conversion Dates remaining, subject to certain adjustments. The conversion price (the "Conversion Price") on any Conversion Date shall equal the least of (i) $12.00, subject to certain adjustments, (ii) 93.5% of the arithmetic average of the volume-weighted average trading price (the "VWAP") on each trading day during the twenty (20) trading day period immediately prior to such Conversion Date (subject to certain adjustments), and (iii) the arithmetic average of the VWAPs on each trading day during the ( 3 )three (3) trading day period immediately prior to such Conversion Date (subject to certain adjustments); provided, however, that the Conversion Price shall not be less than $2.00. In addition, the Preferred Units are convertible on a one-for-one basis (subject to customary anti-dilution adjustments) by the holders of such Preferred Units at any time following May 31, 2017 so long as any conversion is not for less than $250,000 or such lesser amount, if such conversion relates to all of such Purchaser's remaining Preferred Units. In addition, upon certain events involving a change of control, each holder of the Preferred Units may elect to (a) convert its Preferred Units to Common Units at the then-applicable conversion rate, (b) if the Partnership is not the surviving entity (or if the Partnership is the surviving entity, but its Common Units will cease to be listed on a National Securities Exchange), require the Partnership or the acquiring entity, as applicable, to either (i) deliver ( 4 )a security in the surviving entity that has substantially similar rights, preferences and privileges as the Preferred Units or (ii) redeem each Preferred Unit held by such Preferred Unitholder at a redemption price per Preferred Unit equal to 120% of the greater of (A) $11.43 and (B) the intrinsic value of the Preferred Units determined as of the applicable date of determination or (c) if the Partnership is the surviving entity and its Common Units continue to be listed or admitted to trading on a National Securities Exchange, continue to hold the Preferred Units. ( 5 )The issuance of the Preferred Units to CSI Investment and the payment of the quarterly distributions thereon in kind were approved by the Board of Directors of CSI Compressco GP Inc. ("CPGP"), the general partner of the Issuer. Accordingly, the transaction reported on this Form 4 is exempt from Section 16(b) pursuant to Rule 16b-3(d)(1) under the Securities Exchange Act of 1934 (the "Exchange Act"). The transaction reported on this Form 4 is also exempt pursuant to Rule 16a-9 under the Exchange Act. ( 6 )The Preferred Units are perpetual in nature and have no expiration date. ( 7 )All of the reported Preferred Units are owned directly by CSI Investment, a direct, wholly owned subsidiary of CPGP, and may be deemed to be beneficially owned by (i) CPGP, a direct, wholly owned subsidiary of Compressco Field Services, L.L.C. ("CFS"), (ii) CFS, a direct, wholly owned subsidiary of Compressco, Inc. ("CI"), (iii) CI, a direct, wholly owned subsidiary of TTI and (iv) TTI. ( 8 )Each of the reporting persons may be deemed a "director by deputization" of the Issuer by reason of the fact that all directors of the General Partner of the Issuer are designated by TTI.

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