Monumental Sports & Entertainment Data Breach Investigation

Shamis & Gentile P.A., one of the nation's premier class action law firms specializing in data breach cases, is investigating the Lincoln Holdings LLC dba Monumental Sports & Entertainment data breach.
If you were affected by the data breach, your sensitive personally identifiable information may have been exposed, and you may be eligible for compensation.
About Monumental Sports & Entertainment
Lincoln Holdings LLC, operating as Monumental Sports & Entertainment (MSE), is a major sports and venue management company based in Washington, D.C.
Founded in 2010 by Ted Leonsis, MSE owns and operates several professional sports teams, including the NHL’s Washington Capitals, NBA’s Washington Wizards, WNBA’s Washington Mystics.
What Happened?
On Dec. 9, 2025, Monumental Sports & Entertainment detected unusual activity on certain systems and activated incident response protocols.
An investigation revealed that an external party gained access and removed copies of data between Dec. 8 and Dec. 9, 2025.
Technical analysis and review determined on April 7, 2026, that certain personal information belonging to consumers may have been compromised. At this time, the exposed information types have not been specified in public disclosures but may include personal information such as Social Security numbers, addresses, names, or phone numbers.
The breach affected 10,282 people in the United States, including 50 in Massachusetts and three in Maine. Consumers were notified in writing on April 28, 2026.
You May Be Entitled to Compensation
If you were affected by the Monumental Sports & Entertainment data breach, you may be eligible for compensation. Lawyers are investigating potential claims on behalf of consumers whose information was exposed.
Completing the below form can help determine your eligibility to join a lawsuit and protect your rights.
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