WST WEST PHARMACEUTICAL SERVICES INC Investments/Divestments 8-K Filing 2023 - Amendment to Supply Agreement West Pharmaceutical Services, Inc. has executed an amendment to a global master supply agreement with ExxonMobil Product Solutions Company to supply certain identified Exxon butyl polymers for the period January 1, 2024 through December 31, 2028.Get access to all SEC 8-K filings of the WEST PHARMACEUTICAL SERVICES INC