Katherine Kelly Fell
Milbank LLP
- Address of record
- 55 Hudson Yards, New York, NY 10001-2163, 212-530-5000
- kfell@milbank.com
- Phone
- (212) 530-5000
- Fax
- Fax Pro Hac Vice
Contact details as filed with the court in the cases below.
Case history
Publicly tracked matters where this attorney is listed as counsel.
Roberts v. Kalshi Data Breach/Fraud Class Action
A proposed class action against Kalshi, Inc. and related entities, apparently concerning fraud allegations. The docket references consolidation with another matter and indicates the defendants include trading and technology subsidiaries, suggesting the claims may relate to unauthorized access, mishandling of user data, or deceptive practices affecting ordinary users or account holders of Kalshi's trading or prediction market platform.
- Filed
- June 22, 2026
- Represents
- Kalshi Inc., KalshiEX LLC, Kalshi Klear Inc., Kalshi Klear LLC, Kalshi Trading LLC, SUSQUEHANNA INTERNATIONAL GROUP LLP, Susquehanna Government Products, LLLP
Josephson v. Kalshi Data Breach Class Action
A proposed class action against Kalshi, Inc. and related entities, apparently concerning fraud. The case was voluntarily dismissed without prejudice shortly after filing, suggesting either procedural issues or potential settlement discussions early in litigation.
- Filed
- May 18, 2026
- Represents
- Kalshi Inc., KalshiEX LLC, Kalshi Klear LLC, Kalshi Klear Inc., Kalshi Trading LLC
Josephson v. Kalshi Class Action
This proposed class action alleges fraud by Kalshi, Inc., apparently a financial or trading platform. Based solely on the caption and nature of suit designation (fraud), the complaint appears to involve allegations of deceptive practices, though specific details are not available from the docket metadata provided.
- Filed
- January 8, 2026
- Represents
- Kalshi, Inc., Kalshiex, LLC, Kalshi Klear, LLC, Kalshi Klear, Inc., Kalshi Trading, LLC
Kalshi Sports Prediction Market Class Action
A proposed class action alleges violations related to Kalshi's sports prediction market operations. The case involves ordinary users who participated in the platform, apparently raising concerns about regulatory compliance or unfair trading practices in the prediction market context.
- Filed
- October 16, 2025
- Represents
- KalshiEX LLC, Kalshi Inc., Kalshi Klear LLC, Kalshi Klear Inc., Kalshi Trading LLC, Susquehanna Government Products, LLP, SUSQUEHANNA INTERNATIONAL GROUP LLP
Kinlaw v. Sackler RICO Class Action
A proposed class action against the Sackler family alleging violations of the Racketeer Influenced and Corrupt Organizations (RICO) Act. Based on the nature of suit, this appears to relate to allegations concerning a pattern of racketeering activity, potentially involving opioid-related claims given the defendants' known connection to opioid litigation. The case was filed on September 23, 2025, in the District of New Mexico.
- Filed
- September 23, 2025
- Represents
- Richard S Sackler, David A Sackler, Garrett Lynam
“Recovery” and “exposure” refer to total disclosed settlement funds in associated cases, not money personally won or lost by an attorney. Settlements generally resolve disputed allegations without a finding that either side won. Data comes from public court dockets and may be incomplete.