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Latest / California / February 2026

Hennessy Advisors, Inc.

Hennessy Advisors, Inc. notified California AG on Feb 24, 2026 of a data breach, which occurred on Mar 30, 2025. Data exposed: Name.

All 3 filings by Hennessy Advisors, Inc., state by state · Case file (dates, days to notice against the statute, what the letter offers, prior incidents)

Organization
Hennessy Advisors, Inc.
Source
California AG · source record
Date reported
Feb 24, 2026
Date(s) of breach
Sunday, March 30, 2025
Residents affected
Not published by this source
Data exposed
Name
Notice letter
Sample notice (PDF)
Discovered
December 2025, as stated in the letter
"We did not have evidence that personal information had been accessed until late December 2025, when we learned that certain data, including personal information of certain investors in the Hennessy Funds, had been accessed and released w..."
Days to notice
331 days from the end of the breach window (Mar 30, 2025, no discovery date in the letter) to the California record (Feb 24, 2026). Statute: 30 days from discovery or notification of the breach (Cal. Civ. Code § 1798.82).
Offered in the letter
credit or identity monitoring through Experian
Third party
The letter attributes the incident to a vendor or service provider
First seen by BreachTally
2026-10-30 15:28 UTC

Dates and counts as filed by the organization with the agency. The breach window and the report date often differ by months.

First seen by BreachTally at 15:28 UTC on Oct 30, 2026. New filings reach paid subscribers within 30 minutes of the agency posting, with the count, the data exposed and the letter. Start a 14-day free trial. We email you two days before the first charge and you cancel in one click.
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Other filings by Hennessy Advisors, Inc.

OrganizationSourceStateReportedResidents affectedData exposed
Hennessy Advisors, Inc. Texas AG TX Feb 25, 2026 729 Social Security numberFinancial / bank accountName
Hennessy Advisors, Inc. Massachusetts OCABR MA Feb 24, 2026 346 Social Security numberFinancial / bank accountDriver's license / state ID

Data reproduced from a public government filing. Spot an error? Email support@breachtally.com with the record link. Corrections are applied and noted.