MARKEL GROUP INC.
ent_019fa5544c24cedbe62d325ace8136fc
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
- MARKEL GROUP INC.
- Normalized
- markel group— dedupe via name-norm; Microsoft / MSFT collapse to one row
- GLEIF LEI
- No match
- SEC EDGAR CIK
- 0001096343
- 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 MARKEL GROUP INC. — not by MARKEL GROUP INC. itself. Corporate relationships are mapped from GLEIF relationship records and SEC Exhibit 21 filings.
- Texas State AGvia Costa Farms2026-09-11
Costa Solutions, LLC based in San Antonio, Texas, a business – retail or merchant entity reported a data breach to the Texas Attorney General. The breach was discovered on 2026-08-10 and reported on 2026-09-11. 19,758 Texas residents were affected. 22,482 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);Medical Information;Health Insurance Information;Other;Date of Birth. Consumers were notified via Notice by publication in print media;U.S. Mail.
- Texas State AGvia Markel Insurance Group, LLC2026-07-07
Markel Insurance based in Glen Allen, Virginia, a insurance services entity reported a data breach to the Texas Attorney General. The breach was discovered on 2026-03-18 and reported on 2026-07-07. 268 Texas residents were affected. 4,220 individuals affected in total. Types of information involved: Social Security Number Information;Driver’s License number;Medical Information. Consumers were notified via U.S. Mail.
- California State AGvia Markel Insurance Group, LLC2026-07-02
Markel Insurance reported that an unauthorized actor used social engineering to deceive two employees, gaining access to a limited portion of systems between March 17-18, 2026. The activity was quickly detected and blocked. Investigation determined that names and other personal information were obtained. The company is offering two years of complimentary credit monitoring and identity restoration services through TransUnion.
- Nebraska State AGvia Markel Insurance Group, LLC2026-07-02
Markel Insurance notified Nebraska AG of a security event where unauthorized actors used social engineering (phishing) to gain access to systems between March 17-18, 2026. The incident involved personal information of affected individuals. Markel engaged third-party investigators, notified law enforcement, and is offering two years of complimentary credit monitoring and identity restoration services via TransUnion.
- Massachusetts State AGvia METROMONT LLC2025-05-08
Metromont, LLC reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2025-05-08. 1 Massachusetts residents were affected.
- Indiana State AGvia METROMONT LLC2025-05-08
Metromont LLC reported a data breach to the Indiana Attorney General. The breach occurred on 2025-03-28 and was reported on 2025-05-08. 2 Indiana residents were affected. 2,686 individuals affected in total.
- GLOBALLeak Sitevia METROMONT LLC2025-03-30
Commercial & Residential Construction.
- New Hampshire State AGvia Retail Data2024-09-09
Retail Data notified the NH AG that an unauthorized party gained limited access to its network on June 22, 2024. Personal information of 49 NH residents was accessed. Retail Data engaged forensic investigators, notified residents on Sept 6, 2024, and offered credit monitoring.
- California State AGvia Retail Data2024-09-06
Retail Data reported that on June 22, 2024, an unauthorized party gained limited access to parts of its network. Forensic investigation confirmed that files containing personal information, including Social Security numbers, were accessed and acquired on that date. The company engaged external cybersecurity professionals and is offering identity theft protection services to affected individuals.
- Massachusetts State AGvia Retail Data2024-09-06
Retail Data reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2024-09-06. 255 Massachusetts residents were affected.