One linked filing — more sources may join as they report · filed Apr 14, 2025. View entity profile → Other incidents for this victim →
incident inc_d64a837ac0054f0a · merge_method deterministic
Discovered → first regulatory filing
Discovery to SEC materiality determination
PHI · PII
Materiality determination to SEC 8-K filing
Not recorded for this incident
Discovery variance · Leak precedence · Filing span — no leak-site claim in this cluster; needs two dated filings.
FEDERAL
all SEC 8-K
Earliest sighting first · deep chronology in Litigation Timeline
Apr 12, 2025
Reported by SEC 8-K filing
Apr 12, 2025
Registrant determined the incident material — starts the SEC 4-business-day clock
DaVita Inc. filed an 8-K on April 14, 2025, reporting a ransomware incident discovered on April 12, 2025. The attack encrypted network elements, impacting operations and patient care functions. DaVita isolated systems, engaged third-party cybersecurity professionals, and notified law enforcement. The full scope and duration of disruption remain unknown.
About this clustering
DisclosureLens links filings into incidents through layered matchers: deterministic rules (same source document, multistate filings of one breach, tight-window same-victim pairs), a weighted-similarity scorer for cross-source candidates, and an operator review queue for everything uncertain. Each link records its own method and confidence — shown per filing in the timeline below. The system defaults to NOT merging when uncertain, because a false merge (collapsing two unrelated breaches) is more harmful than a false split (showing related filings separately); uncertain pairs route to human review instead of auto-merging. Filing summaries shown in the timeline are AI-generated extracts — verify each against its linked source.