On January 29, 2021, TETRA Technologies Inc. entered into a Purchase and Sale Agreement (the “Purchase Agreement”) with Spartan Energy Holdco LLC (“Acquirer”) a wholly owned subsidiary of Spartan Energy Partners LP (“Spartan”), and, solely for the limited purposes set forth therein, Spartan. TETRA sold the following to Acquirer: (i) 10,952,478 common units (“Common Units”) representing limited partner interests of CSI Compressco LP (the “Partnership”), which represent approximately 23.1 percent of the outstanding limited partner interests of the Partnership; and (ii) all of the outstanding membership interests (the “GP Equity”) in CSI Compressco GP LLC, the general partner of the Partnership (the “General Partner”). In connection with the GP Sale, the Partnership and certain of its wholly-owned subsidiaries entered into a Third Amendment to Loan and Security Agreement (the “Amendment”) to that certain Loan and Security Agreement, dated as of June 29, 2018, by and among the Partnership, certain of its subsidiaries, Bank of America, N.A., as administrative agent, issuing bank and swing line lender, and the lenders party thereto (the “Lenders”), pursuant to which, among other things, (i) the Lenders consented to the GP Sale and (ii) until the Ratings Hold Date, the Partnership is required to maintain an additional $5.0 million of liquidity and backstop and cash collateralize all outstanding letters of credit. This Third Amendment to Loan and Security Agreement (this “Third Amendment”), dated as of January 29, 2021, is by and among CSI COMPRESSCO LP, a Delaware limited partnership (the “Company”), CSI COMPRESSCO SUB INC., a Delaware corporation (“Sub Inc.”), CSI COMPRESSCO OPERATING LLC, a Delaware limited liability company (“Operating LLC” and collectively with the Company and Sub Inc., the “Borrowers”), the Guarantors party hereto, the Lenders party hereto, the Issuing Bank, the Swing Line Lender and BANK OF AMERICA, N.A., a national banking association, as administrative agent and collateral agent for the Lenders (in such capacity, “Administrative Agent”).