West Pharmaceutical discloses material cyberattack with data theft and global disruptions

Filed May 11, 2026 · Period ending May 7, 2026 · ~1 min read

Key Changes

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  On May 7, 2026, West disclosed a material cyberattack where unauthorized parties stole data and encrypted systems. The attack was detected May 4, prompting the company to take systems offline globally and engage forensic experts.

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  The cyberattack caused temporary global operational disruptions. Core systems and critical processes (shipping, receiving, manufacturing) have restarted at some sites, but full restoration across all locations has no finalized timeline.

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  West has not yet determined whether the incident will materially impact financial condition or operating results, creating uncertainty around potential costs, lost revenue, or other financial consequences.

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