Case file: Amgen 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 9, 2026, agency link on every row. Not legal advice.
The incident
- Breach window
- Jul 1, 2026
- Discovered
- Jul 2, 2026, as stated in the California letter
- State and federal records
- 4 filings, Aug 17, 2026 to Aug 18, 2026
- Residents counted
- 7,092 in 3 states (MA, TX, VT), latest filing per state
- Everyone affected
- 39,594, as reported to Texas AG on Aug 18, 2026
- Information exposed
- Social Security number, Medical / health information, Driver's license / state ID, Passport number, Financial / bank account, Health insurance, Date of birth, Postal address, Email address
- Offered to those affected
- 24 months of credit or identity monitoring through Experian
- Third party named
- Yes, the letter attributes the incident to a vendor or service provider
- Days to notice
- Past the statutory period in 2 of the 3 states that set one, counted from discovery to each state's first record
- Prior incidents
- 3 earlier incidents on record for this organization
The letter: "On or about July 2, 2026, Amgen became aware of an unauthorized third party access to certain Amgen systems and data stored in cloud environments hosted by third party cloud service providers."
Filings
| Agency | Record date | People | In total | Days to notice | Links |
|---|---|---|---|---|---|
| Massachusetts Massachusetts OCABR | Aug 18, 2026 | 354 | 47 days, statute no fixed period | Record | |
| Texas Texas AG | Aug 18, 2026 | 6,714 | 39,594 | 47 days, statute 60 days | Record |
| Vermont Vermont AG | Aug 17, 2026 | 24 | 46 days, statute 45 days, over | Record | |
| California California AG | Aug 17, 2026 | Not published | 46 days, statute 30 days, over | Letter 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.
Notice timing, state by state
- 47 days from discovery (Jul 2, 2026) to the Massachusetts record (Aug 18, 2026). Statute: no fixed period from knowledge or reason to know of the breach (Mass. Gen. Laws ch. 93H, § 3).
- 47 days from discovery (Jul 2, 2026) to the Texas record (Aug 18, 2026). Statute: 60 days from determination that the breach occurred (Tex. Bus. & Com. Code § 521.053).
- 46 days from discovery (Jul 2, 2026) to the Vermont record (Aug 17, 2026). Statute: 45 days from discovery or notification of the breach (9 V.S.A. § 2435).
- 46 days from discovery (Jul 2, 2026) to the California record (Aug 17, 2026). Statute: 30 days from discovery or notification of the breach (Cal. Civ. Code § 1798.82).
The statutes
- Massachusetts: no fixed period to notify residents from knowledge or reason to know of the breach, Mass. Gen. Laws ch. 93H, § 3. Attorney General and OCABR as soon as practicable and without unreasonable delay, every breach.
- Texas: 60 days to notify residents from determination that the breach occurred, Tex. Bus. & Com. Code § 521.053. Attorney General within 30 days of determination when 250 or more Texas residents are affected.
- Vermont: 45 days to notify residents from discovery or notification of the breach, 9 V.S.A. § 2435. Attorney General within 14 business days of discovery or of the consumer notice, whichever is sooner, every breach.
- California: 30 days to notify residents from discovery or notification of the breach, Cal. Civ. Code § 1798.82. Sample notice to the Attorney General when more than 500 Californians are notified, within 15 days of the consumer notice (effective 2026).
Prior incidents by Amgen Inc.
| Records | Breach window | Filed with | People |
|---|---|---|---|
| May 30, 2024 to Sep 25, 2024 | Oct 17, 2023 to Feb 21, 2024 | California, California, Delaware | 8,491 residents |
| Jun 22, 2021 | Apr 21, 2021 to May 14, 2021 | Oregon, California | 101,445 total |
| Jun 26, 2018 | Feb 21, 2018 | California | n/a |
Filings more than six months apart are shown as separate incidents.
Sources and method
Records as published by Massachusetts OCABR, Texas AG, Vermont AG, California AG. Letter facts (discovery date, monitoring, third party) are read from the consumer letter the agency posted, 1 letter 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.