--- title: "Jeffrey McMahon: Enron treasury and CFO roles" language: en canonical: https://dossiertwist.com/dossiers/enron/participants/jeffrey-mcmahon/ as_of: 2026-10-15 keywords: ["Enron","Enron Creditors Recovery Corp.","LJM","Chewco","JEDI","Raptor","Arthur Andersen","Andrew Fastow","Kenneth Lay","Jeffrey Skilling","structured finance","bankruptcy","California electricity","accounting restatement"] --- # Jeffrey McMahon: Enron treasury and CFO roles **Question.** How did McMahon’s Enron roles change? **Answer.** McMahon served as treasurer before Glisan and became CFO after Fastow’s October 2001 removal. His later SEC case concerned distinct earlier transactions. ## Roles and the dated record - Analysis: McMahon was part of Enron’s treasury and finance leadership before becoming CFO in the final weeks before bankruptcy. The Powers inquiry recorded a disputed March 2000 conversation in which he said he warned Skilling about pressure associated with LJM. The report did not resolve all differences between their accounts. [s-doc147] [s-doc13] - Analysis: In June 2007 McMahon agreed to settle SEC allegations concerning the Nigerian barge transaction and rating-agency disclosures. Without admitting or denying the allegations, he accepted an injunction, five-year officer-and-director bar and $300,000 in combined disgorgement, interest and penalty. The release said court approval was still required; its accounting suspension allowed reapplication after three years. These terms were a distinct resolution of his case. [s-doc147] ## Sources - [s-doc147] SEC charges Jeffrey McMahon and announces settlement — Litigation Release 20159, U.S. Securities and Exchange Commission - [s-doc13] Company statement source · s-doc13