06:18 AM EDT, 07/21/2025 (MT Newswires) -- West Pharmaceutical Services ( WST ) said Monday it has appointed Robert McMahon chief financial officer, effective Aug. 4.

McMahon will succeed Bernard Birkett, who has previously announced his intention to retire. Birkett will assume the role of senior adviser to the CEO through the end of the year.

McMahon has been CFO of Agilent Technologies since 2018.