John F. Hartmann

John F. Hartmann

Litigation - Securities

4.0 (1 reviews)
Chicago, Illinois
38+ years experience
Kirkland & Ellis LLP
Updated:

Contact Information

333 West Wolf Point Plaza, Chicago, IL 60654
Login to Contact

Create an account to contact this attorney

Bio

John Hartmann is a partner in Kirkland & Ellis LLP’s litigation practice group, where he focuses on shareholder, professional liability and business litigation matters, as well as regulatory enforcement proceedings and corporate internal investigations.John has represented leading corporations, professional services firms, private investment firms, as well as their directors, officers and partners, in numerous securities class actions, shareholder derivative suits, disputes over corporate transactions, and breach-of-contract actions in federal and state trial and appellate courts throughout the United States. He has also represented clients in dozens of SEC and other regulatory enforcement investigations and proceedings and has regularly advised corporations, boards, and board committees regarding internal investigations and corporate governance matters. John has tried many cases and argued numerous appeals in both state and federal courts.John has been recognized by The Legal 500 U.S. for Securities: Shareholder Litigation, Securities Litigation: Defense and Corporate Investigations and White-Collar Criminal Defense; by Best Lawyers for Securities, Regulatory Enforcement, Commercial and Bet-The-Company Litigation; and by Who’s Who Legal: Litigation. He was named to the "Lawyer of the Year" list by Best Lawyers for Litigation — Regulatory Enforcement (SEC, Telecom, Energy) in Chicago. He has also received an AV Preeminent rating from Martindale-Hubbell.Before joining Kirkland, John was an Assistant United States Attorney in Chicago and a law clerk to the Honorable William J. Bauer of the United States Court of Appeals for the Seventh Circuit. John graduated from the University of Minnesota Law School, where he was Editor-in-Chief of the Minnesota Law Review. John Hartmann is a partner in Kirkland & Ellis LLP’s litigation practice group, where he focuses on shareholder, professional liability and business litigation matters, as well as regulatory enforcement proceedings and corporate internal investigations.John has represented leading corporations, professional services firms, private investment firms, as well as their directors, officers and partners, in numerous securities class actions, shareholder derivative suits, disputes over corporate transactions, and breach-of-contract actions in federal and state trial and appellate courts throughout the United States. He has also represented clients in dozens of SEC and other regulatory enforcement investigations and proceedings and has regularly advised corporations, boards, and board committees regarding internal investigations and corporate governance matters. John has tried many cases and argued numerous appeals in both state and federal courts.John has been recognized by The Legal 500 U.S. for Securities: Shareholder Litigation, Securities Litigation: Defense and Corporate Investigations and White-Collar Criminal Defense; by Best Lawyers for Securities, Regulatory Enforcement, Commercial and Bet-The-Company Litigation; and by Who’s Who Legal: Litigation. He was named to the "Lawyer of the Year" list by Best Lawyers for Litigation — Regulatory Enforcement (SEC, Telecom, Energy) in Chicago. He has also received an AV Preeminent rating from Martindale-Hubbell.Before joining Kirkland, John was an Assistant United States Attorney in Chicago and a law clerk to the Honorable William J. Bauer of the United States Court of Appeals for the Seventh Circuit. He has also represented clients in dozens of SEC and other regulatory enforcement investigations and proceedings and has regularly advised corporations, boards, and board committees regarding internal investigations and corporate governance matters. John has tried many cases and argued numerous appeals in both state and federal courts. John has been recognized by The Legal 500 U.S. for Securities: Shareholder Litigation, Securities Litigation: Defense and Corporate Investigations and White-Collar Criminal Defense; by Best Lawyers for Securities, Regulatory Enforcement, Commercial and Bet-The-Company Litigation; and by Who’s Who Legal: Litigation. He was named to the "Lawyer of the Year" list by Best Lawyers for Litigation — Regulatory Enforcement (SEC, Telecom, Energy) in Chicago. He has also received an AV Preeminent rating from Martindale-Hubbell. Before joining Kirkland, John was an Assistant United States Attorney in Chicago and a law clerk to the Honorable William J. Bauer of the United States Court of Appeals for the Seventh Circuit. John graduated from the University of Minnesota Law School, where he was Editor-in-Chief of the Minnesota Law Review.

Practice Areas

Litigation - Securities

Awards & Recognition

  • Lawyer of the Year: Litigation - Securities, Chicago (2026)
  • Lawyer of the Year: Litigation - Securities, Chicago (2024)
  • Lawyer of the Year: Litigation - Regulatory Enforcement (SEC, Telecom, Energy), Chicago (2021)
  • Lawyer of the Year: Litigation - Regulatory Enforcement (SEC, Telecom, Energy), Chicago (2018)
  • Recognized: Bet-the-Company Litigation
  • Recognized: Commercial Litigation
  • Recognized: Litigation - Regulatory Enforcement (SEC, Telecom, Energy)
  • Recognized: Litigation - Securities

Recognized in Best Lawyers since 2007

Education

  • University of Minnesota, J.D., graduated 1987

Reviews

S

Scott Clark

2 weeks ago

A formidable advocate in complex securities litigation

Our company retained John Hartmann to defend us in a high-stakes shareholder class action alleging securities fraud. From the outset, his deep expertise in this exact area was evident. He possesses a commanding grasp of both the legal intricacies and the underlying financial complexities, which was crucial in developing our defense strategy. His recognition as Lawyer of the Year in securities litigation is well-deserved. John and his team at Kirkland & Ellis were exceptionally thorough and strategic, and his nearly four decades of experience provided a steadying presence during a very stressful period. The outcome was favorable and exceeded our expectations. The only minor critique would be that communication from junior team members could sometimes lag, requiring a follow-up, but John himself was always accessible for critical discussions. We would confidently engage his services again for any significant litigation or regulatory enforcement matter.

Write a Review

Please login to leave a review for this attorney.

Login to Review

Don't have an account? Create one

Related Attorneys

Chicago, IL
5.0 (1 reviews)
View Profile
James C. Siebert
Chicago, IL
5.0 (1 reviews)
View Profile
DA

Daniel Aronsohn

Litigation - Securities

San Francisco, CA
5.0 (1 reviews)
View Profile
WB

William Brenc

Litigation - Securities

Los Angeles, CA
5.0 (1 reviews)
View Profile