Case file: WEST PHARMACEUTICAL SERVICES INC
Every government filing on this incident, the dates as stated, and the days to notice against each state's statute. Built from the records on Nov 15, 2026, agency link on every row. Not legal advice.
The incident
- Breach window
- May 7, 2026
- Discovered
- May 7, 2026, as stated in the SEC Form 8-K letter
- First public signal
- May 11, 2026, when WEST PHARMACEUTICAL SERVICES INC told investors of a cyber incident in an SEC Form 8-K (Item 1.05). No agency record of the incident is on file yet
- State and federal records
- 2 filings, May 11, 2026 to May 20, 2026
- Residents counted
- No state publishes a resident count for this incident
- Everyone affected
- No filing gives a total
- Information exposed
- Financial / bank account
- Offered to those affected
- No monitoring offer found in the letters we read
- Third party named
- No
The letter: "As previously disclosed in the Original Report, the Company determined on May 7, 2026 that the Company had experienced a material cybersecurity attack, in which certain data was exfiltrated by an unauthorized party and certain systems we..."
The investor filing: Form 8-K of May 11, 2026. An 8-K is tied to the incident by the company and the dates, so read it before relying on it. It says: "On May 7, 2026, West Pharmaceutical Services, Inc. (the “Company”) determined that the Company has experienced a material cybersecurity attack, in which certain data was exfiltrated by an unauthorized party and certain systems were encrypted."
Filings
| Agency | Record date | People | In total | Days to notice | Links |
|---|---|---|---|---|---|
| SEC Form 8-K SEC Form 8-K | May 20, 2026 | Not published | 13 days | 8-K Record | |
| SEC Form 8-K SEC Form 8-K | May 11, 2026 | Not published | 4 days | 8-K Record |
People is the count the filing gives, residents of the state unless marked total. Days to notice runs from the discovery date the letter states, or from the end of the breach window when no letter states one, to the date on the state's first record of the incident. "Over" marks a count past the days the state's statute allows for notice to residents. The statute's trigger is a question of fact, the days are arithmetic.
Sources and method
Records as published by SEC Form 8-K. Letter facts (discovery date, monitoring, third party) are read from the consumer letter the agency posted, 2 letters read for this incident, and quoted so you can check them. Texas and HHS publish no letters. First-seen times on each record page. Spot an error? Email support@breachtally.com with this page link.