Karen Hanson Riebel
Lockridge Grindal Nauen PLLP
- Address of record
- 100 Washington Avenue South Suite 2200, Minneapolis, MN 55401, 612-596-4097
- Khriebel@locklaw.com
- Phone
- (612) 596-4097
- Fax
- Fax 612-339-0981
Contact details as filed with the court in the cases below.
Case history
Publicly tracked matters where this attorney is listed as counsel.
Medtronic Data Security Incident Class Action
A proposed class action against Medtronic concerning an alleged data security incident. The case alleges unauthorized access to personal information held by the medical device manufacturer, potentially affecting patients, customers, or account holders.
- Filed
- April 29, 2026
- Represents
- Carlos Jackson
Ainsworth v. UnitedHealth Group Class Action
A proposed class action has been filed against UnitedHealth Group Incorporated in federal court. While specific allegations are not detailed in the available docket information, the case is classified under "Other Statutory Actions," suggesting claims potentially involving insurance practices, coverage disputes, or related statutory violations affecting consumers or policyholders.
- Filed
- August 29, 2025
- Represents
- Janice Ainsworth, Quinetta Bell, Leslie Bower, Yolanda Bradford, David Brown, Michele Cain, Mark Camplese, Chris Cassil, Jessica Conn, Carra Conners, Lew Diggs, Michelle Durden, Robert Gray, Hebatullah Issa, Judy Kisling, Jennifer Marino, Jeremy Meyer, Anthony McGinty, Jermise Medina, Amogh Rajan, David Ramirez, Shannon Robertson, Diane Ryland, Tara Sayers, Nicholas Sheldon, Lisa Taylor-Austin, Robert Thompson, Randy VanderLinde
Johnson Controls Contract Class Action
A proposed class action against Johnson Controls Inc, apparently concerning contract-related claims. The docket indicates the case has been consolidated with related actions and motions to appoint class counsel were filed, but the specific allegations are not detailed in the available docket text.
- Filed
- July 28, 2025
- Represents
- Paul Kaprelian
Allianz Life Insurance Data Incident Class Action
This proposed class action concerns a data incident affecting Allianz Life Insurance Company of North America. Policyholders and account holders allege that their personal information was compromised in the incident. The litigation seeks relief for ordinary consumers harmed by the data breach.
- Filed
- July 4, 2025
- Represents
- Plaintiffs' Leadership Committee
Wings Financial Credit Union Banking Class Action
A proposed class action against Wings Financial Credit Union, apparently involving consumer banking or credit union accounts. The case is docketed under the Banks and Banking nature-of-suit code, and the docket reflects a motion to dismiss that was granted in part and denied in part. The specific factual allegations are not detailed in the available docket entries.
- Filed
- May 6, 2025
- Represents
- Debra Gahm
UnitedHealth Group Class Action
A proposed class action was filed against UnitedHealth Group Incorporated and related entities including UnitedHealthcare, Change Healthcare, and Optum. The docket indicates contract claims, but does not detail the specific allegations. These are allegations in a newly filed case and have not been proven.
- Filed
- October 1, 2024
- Represents
- Paulette Bensignor
Travelers Indemnity Class Action
A proposed class action has been filed against The Travelers Indemnity Company. The available docket text does not describe the specific allegations, but the case is categorized as personal injury (P.I.: Other). Because it was surfaced as a class-action complaint, it may involve claims by insurance policyholders or other ordinary individuals, though details are not yet known.
- Filed
- September 20, 2024
- Represents
- Tiffany Pratt
Caresource MOVEit Data Breach Class Action
A proposed class action against Caresource and Progress Software Corporation, apparently concerning a data security breach involving MOVEit file transfer software. The case was directly filed in the District of Massachusetts as part of MDL 3083, In Re: MOVEit Customer Data Security Breach Litigation. The complaint alleges that customer data was compromised in the breach.
- Filed
- August 16, 2024
- Represents
- Deidra Clay
UnitedHealth Group Consumer Class Action
A proposed class action against UnitedHealth Group Incorporated, filed in the District of Minnesota. The nature of suit is 'P.I.: Other,' suggesting claims for personal injury or similar harms, but the specific allegations are not available from the caption or docket text.
- Filed
- August 9, 2024
- Represents
- Shirley Hertzberg, Victor Williams
Cencora/The Lash Group Data Security Incident Settlement
On February 27, 2024, Cencora disclosed that its information systems had been improperly accessed by unknown parties. The data breach exposed Personal Information including names, addresses, Social Security numbers, health and insurance information, financial account information, and other sensitive data. Cencora has agreed to pay $40,000,000 and implement enhanced data and information security measures to resolve claims arising from this incident.
- Settlement fund
- $40M
- Claim deadline
- January 19, 2026
- Represents
- ERIN STRICKLAND
Change Healthcare Customer Data Security Breach Class Action
This is a proposed class action against Change Healthcare, Inc. apparently concerning a customer data security breach. The case is filed as multidistrict litigation, and the docket shows appearances by numerous individual plaintiffs who may be current or former customers. The allegations have not been proven, and no settlement is indicated.
- Filed
- June 7, 2024
- Represents
- Patient Track Co-Lead Counsel
Fortra File Transfer Software Data Breach Settlement
Defendants used Fortra's file transfer service, which suffered a criminal cyberattack on or about January 30, 2023. The breach resulted in unauthorized access to approximately five million individuals' personal and health insurance information, including names, addresses, dates of birth, Social Security numbers, and health plan details. Defendants are paying $20 million to resolve claims arising from this data incident.
- Settlement fund
- $20M
- Claim deadline
- August 29, 2025
- Represents
- Branton Underwood
MOVEit Data Breach Settlement - GRIPA
In May 2023, Greater Rochester Independent Practice Association suffered a data breach involving MOVEit Transfer file transfer software. The breach exposed personally identifiable information and protected healthcare information of individuals, including names, dates of birth, Social Security numbers, health information, and insurance details. GRIPA is settling claims related to this breach, though litigation against Progress Software Corporation (the MOVEit software licensor) continues.
- Settlement fund
- $2.1M
- Claim deadline
- September 3, 2026
Comcast Data Breach Settlement
In October 2023, a third-party gained unauthorized access to Comcast customers' personal information in a cybersecurity incident. Comcast denies that it engaged in any wrongdoing or violated any law.
- Settlement fund
- $117.5M
- Claim deadline
- September 14, 2026
- Represents
- VINCE ESTEVEZ
Union Bank and Trust Company Data Breach Settlement
Union Bank and Trust Company experienced a MOVEit Security Incident between May 27 and May 31, 2023, that resulted in the potential compromise of customers' personally identifiable information. The defendant denies any allegation of wrongdoing.
- Settlement fund
- $2.4M
- Claim deadline
- July 21, 2026
MOVEit Customer Data Security Breach Settlement
Cadence Bank used a third-party file transfer application called MOVEit Transfer that had a security vulnerability. This vulnerability led to a data breach between May 28, 2023 and May 31, 2023, where personally identifying information of customers was compromised. Cadence began notifying affected individuals in September 2023.
- Claim deadline
- June 4, 2026
- Represents
- Bruce Bailey, Jian Golestani, Glen Williams
MOVEit Nuance Data Security Breach Settlement
Nuance Communications, Inc. experienced a data security breach between May 27-31, 2023, affecting personally identifiable information of customers. The breach resulted from an alleged vulnerability in MOVEit Transfer, third-party file transfer software that Nuance used in its ordinary business operations. Nuance is settling claims related to this 2023 MOVEit Security Incident, though litigation against Progress Software Corporation (the MOVEit software licensor) continues.
- Claim deadline
- March 30, 2026
- Represents
- Bruce Bailey, Jian Golestani, Glen Williams
Williams v. Duke University Health System Settlement
Duke University Health System allegedly used a tracking tool on its website that may have led to the disclosure of personal or health-related information to a vendor when users visited the website. Duke denies any wrongdoing and the court has not ruled that it did anything wrong.
- Claim deadline
- August 16, 2026
- Represents
- KIM NAUGLE, AFRIKA WILLIAMS
Blue Cross Blue Shield Antitrust Settlement
Blue Cross Blue Shield companies allegedly violated antitrust laws by entering into an agreement not to compete with each other and to limit competition among themselves in selling health insurance and administrative services. The defendants deny wrongdoing and claim their conduct results in lower healthcare costs and greater access to care. The parties settled to avoid the risk and cost of further litigation.
- Settlement fund
- $2.7B
- Claim deadline
- November 5, 2021
- Represents
- Plaintiffs' Counsel
“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.