Bellevue Man Sues Prediction Platform Kalshi in Seattle, Seeking $580,000
A man living in Bellevue, Washington, first sued prediction-market platform Kalshi in King County Superior Court, seeking $580,544.98 and alleging that the company operated illegal gambling in Washington in violation of the state Consumer Protection Act. On October 23, Kalshi removed the case to federal court in Seattle.
The plaintiff, Scott Bright, deposited $315,353.94 into his Kalshi account through 253 transactions between June 17 and August 14, 2026, betting on Major League Baseball, professional tennis and Korean and Japanese professional baseball, among other events.
The complaint says Kalshi charged nearly $5,600 in deposit fees and $84,062 in trading fees during that period. Bright's actual net loss was $308,781.62, leaving just $983.27 in his account.
Bright is suing under Washington's Recovery of Money Lost at Gambling Act, arguing that state law allows losses to be recovered event by event and that winnings cannot be offset against losses on other events.
Attorney General Nick Brown sued Kalshi over the same issue on March 27. A King County judge granted a preliminary injunction on July 17 and issued an amended order on August 12 requiring Kalshi to stop offering sports event contracts in Washington. Yet the complaint notes that all 253 of Bright's deposits came after the state filed suit, and that Kalshi kept accepting his money after the injunction before eventually displaying a notice that the app was unavailable in his location.
Source: 美国华盛顿西区联邦地区法院诉讼文件
Published by GSM · USA (original Chinese edition)
Photo: 位于西雅图的 William Kenzo Nakamura 美国法院大楼。Another Believer 摄，Wikimedia Commons，CC BY-SA 3.0。 / The William Kenzo Nakamura U.S. Courthouse in Seattle. Photo by Another Believer, Wikimedia Commons, CC BY-SA 3.0.
