After serving in an interim capacity for the past year, Dan Sumner will become Westinghouse’s official president and chief executive officer, according to the company’s Monday press release.
This new position is effective immediately, Westinghouse said. Sumner has served as the interim CEO for Westinghouse since April 2025 after former CEO Partrick Fragman retired from the company on March 31, 2025. Fragman was the company’s president and CEO from August 2019 to March 2025.
Prior to filling the CEO position, Sumner was the head of Westinghouse’s global operating plant business, where he was responsible for the company’s delivery of products and services to the global nuclear operating fleet. He also worked as the company’s chief financial officer from 2017 to 2023.
Sumner has nearly 25 years in the global market, according to the release. He had been with Westinghouse for 16 of those years.
“On behalf of the board of directors, I look forward to Dan [Sumner] continuing in the role of CEO,” Dominic Kieran, chair of the Westinghouse board of directors, said. “Dan’s leadership and expertise combined with his deep knowledge of Westinghouse and our industry will be instrumental in positioning Westinghouse to deliver value for our operating plant and new plant customers around the world.”