ULTRA CLEAN HOLDINGS, INC.
ent_019e61697bc7e1c21768e1cb1e7adac5
Disclosures
6
SEC 10-K Item 1C · State AG · 5 jurisdictions
Incidents
1
filings grouped by incident
Max affected reported
6,060
nationwide · State AG ME
Leak-site claims
0
none in sample
Identity resolution
- Canonical name
- ULTRA CLEAN HOLDINGS, INC.
- Normalized
- ultra clean— dedupe via name-norm; Microsoft / MSFT collapse to one row
- GLEIF LEI
- 5493007L6LS7QX18PE75
- SEC EDGAR CIK
- None — not an SEC registrant
- Domain
- None on record
Disclosure history (6)newest first
- FEDERALSEC 10-K Item 1Cas victim2026-02-23
UCT (a manufacturing entity) discloses its cybersecurity risk management program in its 10-K Item 1C. The filing describes preventive controls (MFA, IAM, encryption, penetration testing) and governance (Board oversight, CISO reporting). It explicitly states that cybersecurity risks have not yet materially affected the company and makes no reference to a specific incident, breach, or material impact.
- 🐻California State AGas victim2020-12-23
Ultra Clean Holdings, Inc. (UCT) notified California regulators of a phishing incident occurring August 3-4, 2020, discovered August 5, 2020. Attackers obtained personal information including names, addresses, and government IDs. UCT provided two years of Experian IdentityWorks monitoring. The attacker is a sophisticated criminal enterprise seeking extortion.
- 🦞Maine State AGas victim2020-12-17
Ultra Clean Holdings, Inc. reported an external system breach (hacking) occurring on August 3, 2020, discovered on August 5, 2020. The incident affected 6,060 individuals nationwide, including 127 Maine residents. Compromised data included names/personal identifiers combined with financial account or credit/debit card numbers. Notification was sent on October 23, 2020, offering two years of credit monitoring via Experian.
- 🦫Oregon State AGas victim2020-11-10
Ultra Clean Holdings, Inc. reported a data breach to the Oregon Attorney General. The breach was reported on 2020-11-10. The breach occurred during 8/3/2020 - 8/4/2020. The breach was discovered on 8/5/2020. 5,449 individuals were affected. Notice was sent on 11/9/2020.
- 🦞Maine State AGas victim2020-10-23
Ultra Clean Holdings, Inc. reported an external system breach (hacking) occurring on August 3, 2020, discovered on August 5, 2020. The incident affected 5,449 individuals, including 36 Maine residents. Stolen data included names and financial account or credit/debit card numbers (with security codes/PINs). The company provided written notification on October 23, 2020, and offered a complimentary two-year subscription to Experian’s IdentityWorks.
- 🦬Montana State AGas victim2020-10-23
Ultra Clean Holdings, Inc reported a data breach to the Montana Attorney General. The breach was reported on 2020-10-23. The breach occurred from 8/3/2020 to 8/4/2020. 1 Montana residents were affected.