Defense counsel in 1 case

Kathleen M O'Sullivan

PERKINS COIE (SEA)

Address of record: 1201 3RD AVE STE 4900, SEATTLE, WA 98101-3099, 206-583-8888
Email: KOSullivan@perkinscoie.com
Phone: (206) 583-8888
Fax: Fax 206-583-8500

Contact details as filed with the court in the cases below.

Cases tracked

0 active · 1 settled

—

Plaintiff-side recovery

Disclosed settlement funds

$350M

Defense-side exposure

Resolved in settlements

Cases with values

of 1 tracked

Case history

Publicly tracked matters where this attorney is listed as counsel.

Defense counselSettled — claims closed

T-Mobile 2021 Data Breach Settlement

T-Mobile suffered a cyber-attack in August 2021 that exposed the personal information of more than 76 million customers. The stolen data included full names, dates of birth, Social Security numbers, and driver's license information of current, former, and prospective customers.

Settlement fund: $350M
Claim deadline: January 23, 2023
Represents: T-Mobile US, Inc., T-Mobile USA, Inc.

“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.