Earlier this year, the US Pension Benefit Guaranty Corporation (PBGC) issued a final rule, modifying PBGC regulations that apply to defined benefit pension plans. Among those changes were revisions to: (i) the reportable event notification requirements; (ii) annual financial and actuarial information (Form 4010) reporting; (iii) single-employer plan termination rules; and (iv) the premium rate calculation rules. The rule was generally effective on March 5, 2020, but some provisions have different applicability dates.