FEDERALItem 1.05 · mandatoryHackingHealthcareHealthcareData ExfiltratedCustomer Data InvolvedDelayed DiscoveryPHIHealth (basic)LowActive

Park Dental Partners, Inc.

bd_173d9139c0a5fd6f · schema v1 · pii pii-v2

Severity

Low

Discovered

Aug 28, 2026

Filed

Oct 13, 2026

To disclose

7 weeks

Affected

Not disclosed

Linked

3 records

Confidence

67%

Full breach record for Park Dental Partners, Inc. →2 incidents on file

Park Dental Partners, Inc. disclosed a material cybersecurity incident on October 7, 2026, reporting unauthorized access to its network discovered on August 28, 2026. The breach resulted in the unauthorized acquisition of patients' protected health information (PHI). The company engaged forensic experts and law enforcement, and is completing notifications to affected individuals. Four putative class action lawsuits were filed in Minnesota state court in September 2026 alleging negligence and failure to safeguard data. No material financial impact has been identified to date.

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SEC clockMateriality determined Oct 7, 2026 → Filed Oct 13, 20266d ✓ SEC 4-day OK7 weeks discovery → filing

⚠ occurrence dateThe stored discovery date equals the breach OCCURRENCE date. Detection is normally later, so this OVERSTATES the delay — a 'late' verdict here may not be real.

Incident timeline

discovery → filing · 7 weeks / 47 days

Aug 28, 2026

Begins

Aug 28, 2026

Discovered

Oct 7, 2026

Scope determined

Oct 13, 2026

Filed

vs. sector median

2 wks faster

This filing is one of 3 records about the same incident.View merged incident

Linked disclosures

Why this link?

Ransomware claims (1)

Leak Sitechaosbd_484c7d0e9748094a2026-10-01 · +13dVerified

Regulatory filings (1) · sorted by filing gap

SEC 8-Kbd_beae932c49e16b302026-09-01 · +42dCandidate

Name: Park Dental Partners, Inc.
norm: park dental
SEC CIK: 0002069604
Domain: parkdental.com

Name: Park Dental Partners, Inc.
norm: park dental
SEC CIK: 0002069604
Domain: parkdental.com
Industry: Healthcarellm

Discovered: Aug 28, 2026
Breach occurred: Aug 28, 2026
Undetected for: 0 daysoccurrence → discovery
Materiality determined: Oct 7, 2026
Notification sent: —
Affected individuals: Not disclosed
Data types: PHIHealth (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing Application
Threat actor: External
Regulator citations: completing notifications pursuant to applicable state and federal law
Initial access: exploit_public_facing

During the incident: Initiated its incident response protocols
Engaged external cybersecurity experts and forensic specialists
Notified law enforcement
Changes made: Providing ongoing and regular cybersecurity awareness training and testing for all employees
Continuously reviewing and enhancing those protections to address evolving threats
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 7 weeks(46 days from discovery to filing)
Compliance flags: SEC 4-day OK · 6d
Discovery-date grounding: occurrence dateThe stored discovery date equals the breach OCCURRENCE date. Detection is normally later, so this OVERSTATES the delay — a 'late' verdict here may not be real.
Clock breakdown: Statute Window Elapsed Threshold Status
SEC
Materiality determined: Oct 7, 2026
→ Filed: Oct 13, 2026
6d cal. 4 business days SEC 4-day OK

Statute	Window	Elapsed	Threshold	Status
SEC	Materiality determined: Oct 7, 2026 → Filed: Oct 13, 2026	6d cal.	4 business days	SEC 4-day OK

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 2 filings

View merged incident ↗

SEC 8-KSep 1 · first

SEC 8-K+42d · this page

Pattern: first filing Sep 1, last Oct 13 — a 42-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

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 filing

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

SEC 8-K / victim statementThis record

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

Source URL: https://www.sec.gov/Archives/edgar/data/2069604/000110465926115541/park-20261007x8k.htm
DisclosureLens renders the full SEC/HHS filing inline below from the originating regulator’s public record (§4.5 fair report privilege).
Filed at: Oct 13, 2026
Raw hash: d74fc40ac38d2ae1d03521e0229b71feff99dd3fc55dabc67bad59866712e2bd

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Linked disclosures

Ransomware claims (1)

Regulatory filings (1) · sorted by filing gap

Reporting entityPark Dental Partners, Inc.

Victim entityPark Dental Partners, Inc.

Incidentdiscovered Aug 28, 2026

Stated responseInitiated its incident response protocols

ComplianceSEC 4-day OK

Extraction provenanceno artifact recorded

Source provenancewww.sec.gov

Source filing