Few lawyers understand derivative products and the regulations that govern them as well as Guy Dempsey. That understanding comes from extensive hands-on involvement with complex derivative transactions and documentation, detailed knowledge of current regulation and market practices, and intimate familiarity with the consequences when derivatives go wrong. Guy has spent nearly as many years as an in-house bank lawyer as he has as an outside counsel, so he also knows how to give advice that is practical as well as legally correct. Guy's deep product knowledge and in-house experience help him address legal issues in ways that make business sense to clients. Sometimes, that just means being able to understand and use market terminology; other times, it may mean creating a compliance policy that actually reflects the way business is done. He knows how to craft a legal solution to a problem that takes into account the limitations of a client's systems and operational capabilities. Because he represents all types of clients, he can help dealers to understand what is important to end users, and end users to understand what is important to dealers.Guy has been involved in ISDA documentation projects dating back to the drafting of the 1992 master and the credit support annex, and also participates actively in relevant bar association and industry committee work. He has been a speaker at numerous ISDA, PLI and industry presentations.Before joining Katten, Guy was a managing director at Barclays Bank, where he held a number of senior positions, including that of general counsel for the Americas. He also served as managing director and counsel at Bankers Trust Company, practicing law in both New York and London.