HackingFinancial ServicesFinanceStolen CredentialsSupply Chain (3P Vendor)Customer Data InvolvedIdentity (basic)Government IDMediumContained

Pinnacle Financial Partners, Inc.

bd_90aeefc78a67afbd · schema v1 · pii pii-v1

Severity

Medium

Discovered

Nov 7, 2025

Filed

Jul 16, 2026

To disclose

—

Affected

Not disclosed

Linked

2 filings

Confidence

64%

Full breach record for Pinnacle Financial Partners, Inc. →

Pinnacle Financial Partners Inc notified Nebraska residents of a data breach involving its third-party advisor, Mercadien, P.C. Unauthorized access occurred between September 17 and October 9, 2025, affecting customer names, addresses, and government IDs. Pinnacle discovered the incident on November 7, 2025, and sent notifications on July 16, 2026, offering credit monitoring services.

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Incident timeline

undetected · 51 days

Sep 17, 2025

Begins

Nov 7, 2025

Discovered

Jul 16, 2026

Filed

This filing is one of 2 about the same incident.View merged incident

Part of Mercadien, P.C. supply-chain incident (2026) — a supply-chain cascade affecting multiple organizations.View cascade →

Linked disclosures

Why this link?

Regulatory filings (1) · sorted by filing gap

Vermont State AGbd_3761e4d2e707c4a82026-07-16Candidate

Name: Pinnacle Financial Partners, Inc.
norm: pinnacle financial
Domain: pnfp.com

Name: Pinnacle Financial Partners, Inc.
norm: pinnacle financial
Domain: pnfp.com
Industry: Financial Servicesllm

Discovered: Nov 7, 2025
Breach occurred: Sep 17, 2025 – Oct 9, 2025
Undetected for: 51 daysoccurrence → discovery
Materiality determined: —
Notification sent: Jul 16, 2026
Affected individuals: Not disclosed
Data types: Identity (basic)Government ID
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External
Third party: via Mercadien, P.C.
Initial access: valid_credentials

During the incident: Engaged cybersecurity experts
Notified law enforcement
Investigated and secured systems
Received affected data set from Mercadien
Offered 12/24 months of credit monitoring and identity protection services through IDX
Changes made: Review and enhance security practices
Oversight of third-party service providers
Source: Quoted from the filing itself, not independently verified.

Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 2 filings · 2 states

View merged incident ↗

Vermont State AGJul 16 · first

Nebraska State AGJul 16 · first · this page

Evidence ladder

Leak-site claim

Attacker assertion only. Establishes: claim date, group, alleged victim.

Press / market report

Unlocks: incident narrative, operational impact. Still no compliance clock.

State AG / regulator filingThis record

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statement

Unlocks: materiality, stated response, full audit trail. Ceiling removed.

Source URL: https://nebraska.gov/ago/data-breach/documents/e4295219-40d6-46eb-b459-6e85c2ca63b9.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jul 16, 2026
Raw hash: a94ad0c77f053a7c8f677cf5105f2f4d1b6f6060faae40277ebee326dc38e2c2

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityPinnacle Financial Partners, Inc.

Victim entityPinnacle Financial Partners, Inc.

Incidentdiscovered Nov 7, 2025

Stated responseEngaged cybersecurity experts

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancenebraska.gov