WESTERN ALLIANCE BANCORPORATION
ent_019fa560400527c1eab487c5f0d78014
Disclosures
0
— · 0 jurisdictions
Multi-filing incidents
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no multi-filing incident in sample
Max affected reported
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no filed count in sample
Leak-site claims
0
none in sample
Identity resolution
- Canonical name
- WESTERN ALLIANCE BANCORPORATION
- Normalized
- western alliance bancorporation— dedupe via name-norm; Microsoft / MSFT collapse to one row
- GLEIF LEI
- No match
- SEC EDGAR CIK
- 0001212545
- Domain
- None on record
Disclosure history (0)newest first
No disclosures linked to this entity yet.
Subsidiary disclosures (newest 10)filed by group companies
◈ These filings were made by or about subsidiaries of WESTERN ALLIANCE BANCORPORATION — not by WESTERN ALLIANCE BANCORPORATION itself. Corporate relationships are mapped from GLEIF relationship records and SEC Exhibit 21 filings.
- Texas State AGvia Western Alliance Bank2025-07-01
Western Alliance Bank ("WAB") based in Phoenix, Arizona, a financial services entity reported a data breach to the Texas Attorney General. The breach was discovered on 2025-06-03 and reported on 2025-07-01. 1,222 Texas residents were affected. 78,338 individuals affected in total. Types of information involved: Name of individual;Address;Social Security Number Information;Driver’s License number;Government-issued ID number (e.g. passport, state ID card);Financial Information (e.g. account number, credit or debit card number);Date of Birth. Consumers were notified via U.S. Mail.
- Washington State AGvia Western Alliance Bank2025-06-30
Western Alliance Bank disclosed a cyberattack involving a third-party vendor's secure file transfer software. An unauthorized actor exploited an unknown vulnerability to access systems and exfiltrate files between Oct 12-24, 2024. The bank discovered the incident on Jan 27, 2025, and confirmed personal information (names, addresses) was involved on June 3, 2025. 539 Washington residents were notified. Law enforcement was notified, and credit monitoring was offered.
- Oregon State AGvia Western Alliance Bank2025-06-30
Western Alliance Bank ("WAB") reported a data breach to the Oregon Attorney General. The breach was reported on 2025-06-30. The breach occurred during 10/12/2024 - 10/24/2024. The breach was discovered on 1/27/20256/3/2025. 78,338 individuals were affected. Notice was sent on 3/14/20256/30/2025.
- New Hampshire State AGvia Western Alliance Bank2025-06-30
Western Alliance Bank filed a supplemental notice with the New Hampshire Attorney General regarding a data security incident involving a third-party secure file transfer software. Unauthorized access occurred between October 12-24, 2024. The bank discovered the incident on January 27, 2025. A comprehensive review determined that personal information (including SSN, tax ID, driver's license, and financial account data) of 39 additional New Hampshire residents was compromised. Notifications were mailed on June 30, 2025, offering credit monitoring services.
- California State AGvia Western Alliance Bank2025-03-14
Western Alliance Bank disclosed a data breach involving a third-party vendor's secure file transfer software. An unauthorized actor exploited an unknown vulnerability in the software to access Western Alliance's systems between October 12 and October 24, 2024, and exfiltrated files. The bank discovered the incident on January 27, 2025. Affected data includes names, Social Security numbers, and potentially financial account numbers, driver's license numbers, and tax identification numbers. The bank is offering one year of complimentary credit monitoring.
- Nebraska State AGvia Western Alliance Bank2025-03-14
Western Alliance Bank (�WAB�), a financial services/insurance entity filed a data breach notification with the Nebraska Attorney General. The breach was discovered on 2025-01-27 according to the AG's register. The breach is dated 2024-10-12 to 2024-10-24. Nebraska residents were notified on 2025-03-14.
- Maryland State AGvia Western Alliance Bank2025-03-14
Western Alliance Bank notified the Maryland AG of a data security incident affecting 11 Maryland residents. A threat actor exploited an unknown vulnerability in a third-party secure file transfer software between Oct 12-24, 2024, to access files containing names, SSNs, DOBs, financial account numbers, driver's licenses, and passports. WAB engaged forensic investigators, notified law enforcement, and is offering credit monitoring.
- Montana State AGvia Western Alliance Bank2025-03-14
Western Alliance Bank notified individuals of a data breach involving a third-party vendor's secure file transfer software. An unauthorized actor exploited an unknown vulnerability between October 12 and 24, 2024, to access systems and exfiltrate files containing names, SSNs, and financial data. The bank discovered the incident on January 27, 2025, notified law enforcement, and is offering one year of credit monitoring.
- Massachusetts State AGvia Western Alliance Bank2025-03-14
Western Alliance Bank (“WAB”) reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2025-03-14. 410 Massachusetts residents were affected.
- Maine State AGvia Western Alliance Bank2025-03-14
Western Alliance Bank reported a third-party vendor software breach occurring Oct 12-24, 2024, discovered Jan 27, 2025. Unauthorized actors exploited an unknown vulnerability in secure file transfer software to exfiltrate files containing names, SSNs, and financial data. 21,899 individuals affected; 6 in Maine. Law enforcement notified; credit monitoring offered.