MGM National Harbor has appointed Chris Gumiela as its president and chief operating officer, the company said. Gumiela joined the company in 2006 and has held roles across its land-based and online operations. The property recorded more than $823.2 million in revenue in 2025.
A company veteran with land-based and online experience will lead the casino property.
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Kalshi appointed Sudhir Jain, a former Patomak partner, as its chief compliance officer, according to reports published on 13 May 2026. The appointment expands the prediction-market platform’s regulatory team.
Seneca Resorts & Casinos appointed James Domzalski chief legal officer and general counsel. The company said he will oversee legal, risk management and regulatory compliance activities for Seneca Resorts & Casinos and its subsidiaries.
High Roller Technologies appointed former Connecticut Lottery executive Andrew Walter as chief legal and compliance officer, replacing Sarah Stienon. Walter previously led sports betting at the lottery and worked in compliance and regulatory affairs at PointsBet, the company said.
Morongo Casino Resort & Spa announced Tony Gawne as its chief information officer in California. CEO Mike Bean said Gawne would support the organisation’s technology and cybersecurity work; Gawne has more than 26 years of experience in gaming and hospitality technology roles.
The American Gaming Association appointed former New Jersey governor Chris Christie to an advisory role opposing prediction markets, according to the report. Christie has publicly argued that sports event contracts offered by prediction-market platforms are illegal, while those platforms say they are regulated by the Commodity Futures Trading Commission rather than state laws.