Kirby McInerney LLP | Financial Litigation Law Firm | TL Popejoy
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TL  Popejoy


Consumer Fraud
Whistleblower/Qui Tam


  • Amherst College (B.A., summa cum laude)
  • Johns Hopkins University (M.A., Ph.D.)
  • City University of New York School of Law (J.D.)


  • New York State Bar
  • United State District Courts for the Southern and Eastern Districts of New York
TL Popejoy
Of Counsel
Tel: 212.371.6600
Fax: 212.751.2540
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TL Popejoy is Of Counsel to the firm and practices out of our New York office.

Mr. Popejoy joined the firm in 2020. He focuses on antitrust, whistleblower, derivative, and securities litigation involving complex financial products. 
Prior to joining KM, Mr. Popejoy practiced as an attorney at Quinn Emanuel Urquhart & Sullivan, LLP and a startup litigation boutique, where he worked on high-profile cases involving complex financial products in large antitrust class actions, contract disputes, and numerous FINRA and SEC investigations. Some of Mr. Popejoy’s past case experience includes: In re European Government Bonds Antitrust Litigation; In re Chicago Board Options Exchange Volatility Index Manipulation Antitrust Litigation, a class action concerning settlement of the VIX “fear index;” Iowa Public Employees’ Retirement System v. Bank of America Corporation, a class action concerning collusive behavior in the stock loan industry; In re Interest Rate Swaps Antitrust Litigation; Alaska Electrical Pension Fund v. Bank Of America Corporation, a class action concerning price manipulation of the ISDAfix benchmark; In re Treasury Securities Auction Antitrust Litigation; Scott v. AT&T Inc., involving the sale of customer “geolocation” information; and Williams v. AT&T Mobility LLC, representing a victim of “SIM swapping” in a case involving cryptocurrency. Mr. Popejoy has also represented pro bono low-income tenants in New York City, as well as New York City public school students in suspension hearings.
Before law school, Mr. Popejoy was a Director in algorithmic trading at Credit Suisse and RBC Capital Markets. He is co-inventor of a patent with the founders of the IEX stock exchange that protects institutional investors from high frequency trading arbitrage, and he has argued successfully before the U.S. Patent and Trademark Office.
Mr. Popejoy is a member of the International Air & Transportation Safety Bar Association, the Lawyer-Pilots Bar Association, New York City Bar Aeronautics Committee, and is an instrument-rated pilot. His cybersecurity background includes a CISSP certification (Certified Information Systems Security Professional) and computer security architecture.
Mr. Popejoy has also been the recipient of the following awards:
  • Individual plaque for Outstanding Antitrust Litigation Achievement in Private Law Practice, American Antitrust Institute
  • The Legal Aid Society’s Pro Bono Publico award for outstanding service to The Legal Aid Society and its clients