HENNESSY ADVISORS, INC.

Hennessy Advisors, Inc. based in Novato, California, a financial services entity reported a data breach to the Texas Attorney General. The breach was discovered on 2026-02-05 and reported on 2026-02-25. 729 Texas residents were affected. 12,643 individuals affected in total. Types of information involved: Name of individual;Social Security Number Information;Driver’s License number;Financial Information (e.g. account number, credit or debit card number). Consumers were notified via U.S. Mail.

Hennessy Advisors, Inc. disclosed a data security incident discovered on March 30, 2025, involving unauthorized access and release of personal information for certain investors in the Hennessy Funds. The company retained third-party specialists to investigate and secure systems. Personal information potentially affected includes identity and financial data. Complimentary credit monitoring and identity theft protection services are being offered to affected individuals.

Hennessy Advisors, Inc. (investment management) detected suspicious activity on 2025-03-30. Data including investor personal information was accessed and released without authorization; specific PII exposure confirmed 2026-02-05. 48 of 12,643 affected individuals are Maine residents. Notifications sent 2026-02-23. 12-month IDX identity protection offered.

Hennessy Advisors, Inc. notified the New Hampshire Attorney General of a security incident discovered on March 30, 2025. Unauthorized access to systems resulted in the exfiltration of personal information for 95 New Hampshire residents, including names, SSNs, driver's license numbers, and financial account data. The breach was confirmed in December 2025, and notifications were sent to affected individuals on February 23, 2026, offering credit monitoring services.

Hennessy Advisors Inc reported a data breach to the Indiana Attorney General. The breach occurred on 2025-03-30 and was reported on 2026-02-23. 147 Indiana residents were affected. 12,643 individuals affected in total.

Hennessy Advisors, Inc., an investment management firm, disclosed a data breach discovered on March 30, 2025. Unauthorized access to investor personal information occurred, with confirmation of data access in late December 2025. The firm retained third-party specialists and is offering credit monitoring and identity theft protection services to affected individuals.