Nathaniel E. Marmon is a Counsel at JFB Legal. As a young lawyer, Nathaniel cut his teeth working with Jack on a multi-billion-dollar trial and appeal, quickly learning the value of hard work and exceptional preparation. Almost a decade later, Nathaniel is now a seasoned commercial litigator with experience successfully handling high-stakes, complex matters for sophisticated clients across a wide array of industries. He has represented banks, accounting firms, insurance companies, investment funds, real-estate developers, and high-net-worth individuals in commercial disputes involving securities violations, business torts, breach of contract, and a variety of other claims. On all matters, Nathaniel focuses on delivering pragmatic, thoughtful, and straightforward advice; on winning cases, where possible, or resolving them efficiently; and on always communicating with clients, lawyers, and judges in a clear, careful, and persuasive way.


  • New York University Law School, J.D., 2006
    • New York University Law Review, Associate Editor
  • Yeshiva University, B.A., 2000
    • Computer Science

Civil Litigation

  • Represented Citibank in federal trial concerning mistaken transfer of funds to investment managers and lenders involved in a $900 million syndicated loan.
  • Represented Citigroup in connection with successful defense of $30 billion lawsuit brought by the bankruptcy administrator of Parmalat S.r.l., including major victory on summary judgment and $365 million jury verdict in favor of Citigroup on its counterclaims.
  • Represented the hedge fund Harbinger Capital Partners in $60 million breach of contract/compensation dispute with former partner/employee, including award by trial court in New York Supreme Court, Commercial Division of summary judgment in favor of defendants on all issues. Retained by Harbinger after joining Hogan Lovells to work as co-counsel with Paul Weiss in connection with successful defense of appeal in the First Department.
  • Represented a national insurance company in $100 million coverage litigation.
  • Represented a national insurance company in pre-litigation counseling concerning coverage for long-tail exposure liability.
  • Represented a media company in contract litigation arising out of asset purchase.
  • Represented a lender in multiple disputes over the terms of non-recourse loans.
  • Represented California plaintiffs in connection with enforcement proceeding and related action in New York Supreme Court respecting plaintiffs’ $8.5 million jury award.
  • Represented the Morgans Hotel Group in connection with expedited derivative litigation in Delaware Chancery Court involving claims of breach of fiduciary duty brought by dissident director.
  • Represented a private-equity fund in connection with expedited litigation in Delaware Chancery Court involving claims of fraud and breach of fiduciary duty brought by former partner. Represented fund in ongoing litigation respecting enforcement of parties’ settlement agreement.
  • Represented Wells Fargo in connection with First Department appeal concerning application of CPLR 3408(f) and other foreclosure-related litigation.
  • Represented Citigroup in connection with defense of various lawsuits related to the collapse of the auction rate securities market.
  • Represented corporate directors in connection with successful defense of civil lawsuits asserting violations of Section 16 of the Securities Exchange Act.

Legal Aid & Pro Bono Matters

  • Lead trial counsel in pro-bono representation of indigent mother in Family Court proceeding to terminate mother’s parental rights.
  • Assisted Legal Aid in successful pro-bono representation of indigent worker prosecuting wage and hour litigation in Queens County Supreme Court.
  • Assisted Legal Aid in successful pro-bono representation of low-income, Chinese-speaking restaurant workers in prosecution of wage and hour litigation in the Eastern District.

Lupkin LLP, New York, NY (2018-2020)
  • Counsel
Chaffetz Lindsey LLP, New York, NY (2014-2018)
  • Litigation Associate
Hogan Lovells U.S. LLP, New York, NY (2012-2013)
  • Litigation Associate
Paul Weiss Rifkind Wharton & Garrison LLP, New York, NY (2006-2012)
  • Litigation Associate

Bar Admissions
  • New York State
  • New Jersey
Court Admissions
  • U.S. District Court for the Southern District of New York
  • U.S. District Court for the Eastern District of New York

  • American Bar Association

After a 20+ year career as a Commodities Trader and Financial Markets Specialist, Nick has pivoted into the professional services sector, with his appointment as Head of Research at JFB Legal.  Nick brings a wealth of industry and technical expertise in the commodities and physical energy markets and is widely recognized as an expert in over the counter and listed derivative commodities products.  Nick is originally from England.  Prior to his career in financial services, Nick worked in the healthcare sector as a sales executive for a global pharmaceutical company.


  • University of Leeds, B.A. Social Policy, B.A. Sociology, 1990, cum laude
    • Leeds University Rugby
    • Leeds University Crew
  • FINRA Series 7, Series 63, and Series 3 Licenses (inactive)
  • SFA Futures & Options Representative License (inactive)
  • Notary Public, Commonwealth of Virginia (active)
  • Association of British Pharmaceutical Industry Certificate

GLG – New York, NY
  • Council Member – Provided independent consulting focused on the energy sector (upstream, midstream, power). Provided in-depth fundamental views of the underlying commodity markets including oil, refined products, natural gas, and power (US and Europe). Typical clients included Private Equity and Hedge Funds.
RS Energy – New York, NY
  • Director of Institutional Sales – Responsible for building the institutional client portfolio in America and Europe, providing clients with competitive intelligence, business development strategies, benchmarking, asset evaluations and investment initiatives.
Marex Financial Limited – New York, NY
  • Senior Vice President – Institutional Sales – Responsible for developing cross-commodity sales concepts to new institutional clients while maintaining the existing client book. Provided energy coverage and execution for institutional metals clients and risk management solutions to all clients, with in-depth fundamental and technical analysis.
ED&F Mann Capital Markets Ltd / Jefferies, LLC – New York, NY
  • Senior Vice President – Developed a hedge fund business for the commodity division with a focus on energy. Authored the firm’s daily energy report on crude oil products and natural gas. Cross-sold all asset classes and commodities both internally and externally with potential and existing clients. Helped develop a natural gas execution business (options, futures).
Compagnie Financière Tradition – New York, NY
  • Strategic Development Manager – Part of an international team managing and growing the existing buy-side client base across all business lines, with responsibility for key client relationships. Built a commodity index options business and helped develop a cross-asset cleared volatility product, working with the CME. Recognized as a commodity specialist, providing customer commentary on crude oil and natural gas. Authored a training booklet on commodities that was used to educate employees.
Société Générale Corporate & Investment Banking – Paris, France & New York, NY
  • Vice President, Energy Hedge Fund Sales – Managed the Northeast Power (PJM, New England, and Cinergy) swaps desk and helped run the options books. Worked in US natural gas basis trading, executing, and hedging customer/desk orders. Developed a vanilla flow investor desk focused on the energy spectrum. Built a significant client list of hedge funds, asset managers, and pension funds. Coordinated support groups dealing with Credit, IAs, and Clearport. Member of steering group for cross-business coordination.
  • Senior Trader – Gaselys (Joint Venture between Société Générale and Gaz de France) – Managed the NBP gas customer and proprietary term financial and physical books. Production Manager for surplus field gas on behalf of GDF. Actively managed both speculative and customer financial and physical UK Power books. Responsible for the analysis, design, and implementation of hedging strategies for GDF generation. Developed a German Power book and managed the Nordpool activity: swaps and the volatility books.
Reliant Energy – Houston, TX
  • Energy Trader – Managed the proprietary PJM Book for the Texas-based utility company.
Equinor, formally Statoil – Alexandria, VA
  • Energy Trader – Managed the US Power Book.
Glaxo Smith Kline – London, UK
  • Sales Executive – Marketed prescription drugs to the medical profession, including hospitals, pharmacies, specialists, and general medical practitioners. Role had a specific product focus on treatments for gastro-intestinal conditions and for chronic migraines.

  • The National Association of Legal Assistants

  • French

John F. (“Jack”) Baughman is the Founder and Partner in Charge at JFB Legal. Jack brings more than 25 years of courtroom experience and is one of the leading trial lawyers of his generation. Jack has repeatedly won “bet the company” and benchmark trials for significant clients, including several worth upwards of $1 billion. Jack prepares every case on the assumption that it will go to trial, and he is known for his willingness to do so. His rigorous attention to detail and tenacity for learning the facts to develop a robust trial strategy set him apart. His preparation and creativity provide a tremendous advantage in court and significant leverage in settlement discussions. Due to his experience and reputation, Jack is frequently retained as trial counsel, or for a significant oral argument, and he is accustomed to working with other attorneys and law firms to prepare a case. Mr. Baughman also functions as the General Counsel of the firm.


  • University of Michigan Law School, J.D., 1993, cum laude
    • Note Editor, Michigan Law Review
  • Stanford University, P.h.D., Biological Sciences, 1990
  • Harvard University, B.A., Biology, 1985, magna cum laude


  • The Hon. Miriam Goldman Cedarbaum, U.S. District Court for the Southern District of New York (1993 – 1994)


  • American Lawyer – Litigator of the Week
  • Lawdragon – 500 Leading Lawyers in America
  • Multiple teaching awards

Jack has handled an enormous range of cases. Here is a sample:

  • In December 2020, Jack was lead trial counsel in a high-profile case in the Southern District of New York representing a major bank in a $900 million dispute over mistaken payments.
  • In 2019, Jack was lead counsel in The Frederick Hsu Living Trust v. ODN Holding Corp., a precedent-setting case in Delaware Chancery Court. Jack’s client won on all claims.
  • In 2018, Jack was lead counsel in Alloway v. Bowlmor AMF, in New York Supreme Court. Jack obtained dismissal of all claims against all defendants.
  • In September 2017, Jack was brought in as lead trial counsel in a $2.5 billion federal antitrust case following a failed mediation. Jack repositioned the case and, on the eve of trial, it settled for less than 1/8th of the plaintiff’s previous demand.
  • In May 2017, Jack was lead trial counsel in a $750 million licensing dispute between a pharmaceutical company and a public university. Following jury selection in California State Court, the case was resolved on terms extremely favorable to Jack’s client.
  • In April 2017, Jack was lead trial counsel in a complex reinsurance case in New York Supreme Court. The adversary asked to settle after Jack’s opening statement to the jury.
  • In February 2017, Jack was lead trial counsel for a major drug store chain in litigation with its former CEO. He obtained a multi-million-dollar award for his client.
  • In 2016, Jack was lead trial counsel for a major Wall Street Bank, in one of the few 10b-5 securities fraud cases ever to go to trial. Following a two-month trial, the plaintiff agreed to settle for 12% of his original demand.
  • From January through September 2014, Jack was the lead trial attorney for an international energy company in a $9 billion precedent-setting environmental damages case. Following 66 days of trial, including Jack’s closing argument, the plaintiff settled for less than 2.5% of claimed damages.
  • In 2011, Jack was lead trial lawyer in Chambers vs. Catullo, acting for the plaintiff in a unique libel case. Following a three-month trial, Jack obtained a permanent injunction in favor of his client. This result, successful enjoining defamatory speech is extremely rare.
  • In 2010, Jack and two colleagues were trial counsel in Terra Firma vs. Citigroup Inc. Jack was instrumental in obtaining a complete defense verdict for his client, eliminating more than $7 billion in claims.
  • In 2008, Jack was co-lead trial counsel in Bondi vs. Citigroup, where Jack and his co-counsel defeated claims worth more than $12 billion.
  • In United States vs. Michael Yuen, Jack successfully obtained an extremely rare dismissal of criminal charges after the close of the Government’s case.
  • In United States vs. Raymond Bitar, Jack negotiated an extremely favorable plea for the former CEO of Full Tilt Poker.

Paul, Weiss, Rifkind, Wharton & Garrison LLP, New York, NY (1994-2020)
  • Litigation Partner (2001 – 2020)
  • Litigation Associate (1994 – 2001)

Bar Admissions
  • New York State
  • Virginia
Court Admissions
  • U.S. District Court for the District of Columbia
  • U.S. District Court for the Southern District of New York
  • U.S. District Court for the Eastern District of New York
  • U.S. District Court for the Western District of New York
  • U.S. District Court for the Eastern District of Virginia
  • U.S. Court of Appeals for the First Circuit
  • U.S. Court of Appeals for the Second Circuit
  • U.S. Court of Appeals for the Third Circuit

  • Virginia Bar Association
  • Norfolk – Portsmouth Bar Association
  • New York State Bar Association
  • Combar (The Commercial Bar Association)
  • ARIAS U.S. (AIDA Reinsurance and Insurance Arbitration Society)