X0306 4 2022-09-09 0 0001449488 CSI Compressco LP CCLP 0001236849 JACKSON JOHN EARL 1735 HUGHES LANDING BLVD, STE 200 THE WOODLANDS TX 77380 1 1 0 0 Chief Executive Officer Common Units Representing Limited Partner Interests 2022-09-09 4 P 0 10000 1.27 A 871211 D The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $1.2599 to $1.2979, inclusive. The reporting person undertakes to provide to CSI Compressco LP, any security holder of CSI Compressco LP or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (1). /s/ Jonathan W. Byers, Attorney-in-Fact for John E. Jackson 2022-09-13