Sean R. Matt
Hagens Berman Sobol Shapiro LLP
- Address of record
- 1301 2nd Ave, Suite 2000, Seattle, WA 98101, 206-623-7292
- sean@hbsslaw.com
- Phone
- (206) 623-7292
Contact details as filed with the court in the cases below.
Case history
Publicly tracked matters where this attorney is listed as counsel.
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
- Subrena Tenner, Robert Anastasio, Sarah Soape, Edward J. Casey, Christopher C. Arden, Frank W. Cooper, Lisa Bunner Kurtz, Joyce Pilotti-Iulo, Dawn M. Brida, James Jones, James Smiley, Lynn A. Boaden, Jean Kennedy, Kim Siflinger, Randy Kiyabu, Jerry McDaniel, Barbara C. Cruciata, Meaghan Allen, Crystal Kenney, Kimberlee Daniels, Plaintiff Doe, Edward Marshall, Dorrie Lynn Constantine, Matthew Gorman, Ricky Feagins, Joyce Oguin, Kimberly Clarke, Alexander Hagen, Brian Mays, Ahmad Hakemi, MD, Jessica Mendez, Barbara Malone, Diamond Roberts, Timothy Saunders, Jeffrey Weaver, Shirley Elston
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
- Subrena Tenner, Robert Anastasio, Sarah Soape, Edward J. Casey, Christopher C. Arden, Frank W. Cooper, Lisa Bunner Kurtz, Joyce Pilotti-Iulo, Dawn M. Brida, James Jones, James Smiley, Lynn A. Boaden, Jean Kennedy, Kim Siflinger, Randy Kiyabu, Jerry McDaniel, Barbara C. Cruciata, Meaghan Allen, Crystal Kenney, Kimberlee Daniels, Plaintiff Doe, Edward Marshall, Dorrie Lynn Constantine, Matthew Gorman, Ricky Feagins, Joyce Oguin, Kimberly Clarke, Alexander Hagen, Brian Mays, Ahmad Hakemi, MD, Jessica Mendez, Barbara Malone, Diamond Roberts, Timothy Saunders, Jeffrey Weaver, Shirley Elston
Plantronics Securities Litigation Settlement
Plantronics and several of its senior officers allegedly made false and misleading statements regarding the company's sales practices in violation of federal securities laws. The defendants deny any wrongdoing or liability. The parties have settled for $29.5 million.
- Settlement fund
- $29.5M
- Claim deadline
- June 25, 2025
- Represents
- Roofers Pension Fund, Ilya Trubnikov
“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.