04:15 PM EDT, 10/13/2025 (MT Newswires) -- Avantor ( AVTR ) said late Monday it has appointed current Independent Director Gregory Summe as new chairman of the board, starting Jan. 1, 2026.
Summe will succeed Jonathan Peacock, who plans to step down as chairman and as a director at the end of 2025, after serving for nearly nine years on the company's board.