Stark Bancshares dba Grand Missouri Bank Reports 2025 Data Breach

Stark Bancshares, operating as Grand Missouri Bank, filed a data breach report in December 2025 following an incident that occurred in October of the same year. This filing informs individuals that some of their personal information may have been compromised, prompting the company to initiate an investigation into the scope and impact of the event.

State: IN
Breach date: October 21, 2025
Reported: December 30, 2025

Stark Bancshares, doing business as Grand Missouri Bank, submitted a data breach notification to regulators in Indiana on December 30, 2025. This report details an event that was identified on October 21, 2025, affecting an unspecified number of individuals.

While the precise categories of information involved in this incident were not specified in the public filing, the notification indicates that personal information belonging to individuals was exposed. Public records do not elaborate on the specific types of data affected.

Grand Missouri Bank confirmed that an investigation into the breach is currently underway. The purpose of these public filings is to inform potentially affected individuals and the public about the incident as mandated by state regulations.

Individuals who receive direct notification from Stark Bancshares dba Grand Missouri Bank should review the guidance provided in that communication. It is generally advisable for anyone concerned about their data to remain vigilant, monitor their financial accounts for suspicious activity, and consider changing passwords for critical online services. Being cautious of unsolicited communications is also a recommended precaution.

This public record serves as a factual account of the reported incident, providing details as they are made available by the filing entity.

What to do if you were affected

These general steps can help limit the risk of identity theft and fraud after any data breach.

Stay alert to targeted scams
Be cautious of calls, texts, or emails that reference this breach. Legitimate organizations won't ask you to confirm sensitive details through an unsolicited message.
Keep your notification letter
Save the notice you received. It documents that your information was involved and is often needed to enroll in any credit monitoring offered or to join a related legal claim.

Source: IN Attorney General filing

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