X0306 4 2021-11-18 0 0001449488 CSI Compressco LP CCLP 0001236849 JACKSON JOHN EARL 24955 INTERSTATE 45 N THE WOODLANDS TX 77380 1 1 0 0 Chief Executive Officer Common units representing limited partner interests 2021-11-18 4 A 0 226415 1.35 A 900599 D The Reporting Person agreed to exchange $300,000 principal amount of the Issuer's 7.25% senior notes due 2022, which were called for redemption by the Issuer on December 13, 2021, for 226,415 common units, at the same price per unit previously offered to purchasers in the Issuer's private placement of common units on November 10, 2021. /s/ Jonathan W. Byers, Attorney-in-Fact for John Earl Jackson 2021-11-22