In 2018, the CFTC proposed several amendments to the so-called Part 4 rules, which set forth the regulations applicable to commodity pool operators and commodity trading advisors, including registration exemptions and exclusions, as well as ongoing compliance obligations. The CFTC recently approved a number of those proposed amendments. This article summarizes the key provisions of the final amendments. For additional discussion of those amendments, see “K&L Gates Program Examines Recent CFTC Developments Affecting CPOs and CTAs” (Feb. 27, 2020). For more on recent CFTC developments, see “CFTC’s DSIO Issues Guidance for CCOs on Futures and Swap Dealer Annual Compliance Reports” (Feb. 20, 2020).