Sonida Senior Living Inc. (NYSE: SNDA) appointed Anton Nikodemus as chief operating officer, effective June 15, 2026, according to a company statement.

Nikodemus brings 30 years of hospitality and operations experience to the Dallas-based senior living company. In his new role, he will oversee operational performance across Sonida's portfolio and lead initiatives focused on resident experience and operational scaling.

The appointment creates a new executive position at Sonida, which operates 165 senior housing communities with over 16,400 units across 35 states. Nikodemus will work with the company's proprietary operating system called SPIN (Sonida Performance Insight Navigator), which integrates resident care, workforce and operational data.

"Anton's appointment reflects Sonida's conviction that operational excellence and exceptional resident care are the core pillars of operational success," said President and CEO Brandon Ribar.

Nikodemus previously served as president, CEO and chairman of Seaport Entertainment Group, where he led the company's spin-off from Howard Hughes Holdings Inc. and its listing on the New York Stock Exchange. Before that, he spent 18 years at MGM Resorts International in various leadership roles, including president and COO of CityCenter, overseeing properties such as ARIA Resort & Casino and Vdara Hotel & Spa.

At MGM Resorts, Nikodemus also served as president of the Las Vegas portfolio, managing more than 30,000 employees across properties including Bellagio, MGM Grand and Mandalay Bay, with combined annual revenues exceeding $6.8 billion.

Nikodemus holds a Bachelor of Science in Business Management and Marketing from Arizona State University and completed the Advanced Executive Finance Program at the Wharton School.