E.U. Regulation 236-2012 (Regulation), in effect since November 1, 2012, imposed reporting obligations on short sellers of E.U. securities and regulated certain aspects of the credit default swap market. Compliance, however, is difficult due to a lack of available guidance on those reporting requirements. To help clarify these obligations for fund managers, a recent program presented by Advise Technologies (Advise) offered a comprehensive overview of the Regulation, emphasizing the reporting requirements for short-sellers and the calculation of reporting thresholds. Moderated by William V. de Cordova, Editor-in-Chief of the HFLR, the program featured Anna Lawry, counsel at Ropes & Gray, and Marye Cherry, E.U. regulatory counsel at Advise. This article summarizes the panelists’ key insights. For more on the Regulation from Lawry and Cherry, see “How Fund Managers Can Navigate and Avoid the Pitfalls of European Short Sale Reporting Obligations” (Dec. 1, 2016). For a review of U.S. short-selling rules, see “Impact of Regulation SHO on the Short Sale Activity of Hedge Fund Managers and Broker-Dealers” (Nov. 10, 2011). For additional insight from Advise, see our two-part series on how non-E.U. hedge fund managers can comply with E.U. private placement regimes: “Registration” (Dec. 3, 2015); and “Reporting” (Dec. 10, 2015).