Philip Erdoes
Bear Ventures LLC
Mike Ettling

John Ertman

Founding Partner

Ertman Dulis & Helisek PLLC

New York, NY, USA

John Ertman


John Ertman is a founding partner of Ertman Dulis & Helisek PLLC. Ertman Dulis & Helisek is a commercial litigation firm that focuses on the investment management industry. John and his fellow partners have decades of front-line litigation experience handling sensitive matters facing investment managers and their investors.

John has spent the majority of his respected legal career acting as lead litigation counsel on behalf of private equity, hedge fund, and mutual fund clients. He has represented numerous asset managers in the investment management industry in an extensive range of cases, including securities litigation, class actions, mortgage trust disputes, large contract disputes, internal investigations, government enforcement actions, and whistleblower matters.

Prior to founding Ertman Dulis & Helisek in 2020, John was an investment management litigation partner for sixteen years at Ropes & Gray LLP. There, John was known (in the words of Ropes' Managing Partner) "for his extraordinary commitment to clients and his laser focus on delivering great litigation outcomes." Before he joined Ropes & Gray, he was a partner at Reboul MacMurray Hewitt Maynard & Kristol, a New York-based firm known for its focus on private equity. John became one of Ropes' first litigators in New York in 2003 when Reboul MacMurray and Ropes merged.

John graduated with a Bachelor of Arts, Magna Cum Laude, Phi Beta Kappa from Harvard College in 1988, and earned a J.D. from Harvard Law School in 1991. After graduating from Harvard Law, John served as a judicial clerk for the Honorable Terrence W. Boyle, Chief Judge of the U.S. District Court for the Eastern District of North Carolina, and was an antitrust litigation associate at Skadden Arps from 1992 to 1995 before moving to Reboul MacMurray.

John Ertman’s Newsfeed

John Ertman, Caleb Dulis and Julian Helisek Launch Litigation Firm Focused on Investment Management

John C. Ertman, a long-time litigator for the investment management industry, has formed and launched a new, conflict-free litigation firm, Ertman Dulis & Helisek PLLC. “Our extensive experience in advising investment managers combined with our proven track record in high-stakes cases, makes us well suited to continue serving as trusted counsel to clients in support of their litigation needs," Mr. Ertman said. 

John Ertman’s Background

Founding Partner
Feb 2020 - Present
New York, NY, USA
The partners at Ertman, Dulis & Helisek PLLC have decades of experience in leading-edge litigation and enforcement issues that investment managers and their investors face.
May 2003 - Jan 2020
New York, NY, USA
With offices in major cities across the globe, Ropes & Gray serves many organizations, investors, and individuals at all stages of the business life cycle.
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John Ertman’s Education

1988 - 1991
A.B., Magna Cum Laude, Phi Beta Kappa
1984 - 1988