John has a wide variety of experience in the insurance coverage field. John is also co-lead counsel for many of the world's large financial institutions regarding mortgage crisis-related insurance issues. He has also handled claims under directors and officers policies, fidelity bonds, first-party property policies and other liability insurance products, as well as prosecuting successfully bad faith claims against many of the large insurance organizations. In addition, he also regularly counsels his clients on insurance-related issues, spanning from structuring insurance programs to reviewing policy wording and related documentation. Over the past few years, John's clients have recovered in excess of $4.5 billion in insurance coverage for matters that were being contested by their insurance companies.

John is also involved with the firm’s global environmental, social and governance (ESG) practice. He has a particular focus on the environmental aspects of ESG, and has succcessfully obtained recoveries on key areas such as environmental liabilities, asbestos related claims and other toxic torts. In particular, John has worked with some of the largest energy companies on the impact of climate change on their businesses, and working to protect the companies through insurance and other strategies.John's international practice involves appearing in courts and tribunals throughout the United States and in Europe. As an example, John has been lead US counsel in over twenty Bermuda form arbitrations in London. He has further been lead counsel in some of the largest insurance disputes over the last decade. He also serves as a party-nominated arbitrator in many insurance arbitrations. He currently sits on the National Advisory Board for Mealey's Conferences and the Insurance Law Teleconference Advisory Board for Strafford.

In addition to his active practice on behalf of policyholders, John regularly lectures around the world on insurance coverage topics and has published numerous articles in national journals and periodicals. John has been rated "AV" by Martindale Hubbell.