One linked filing — more sources may join as they report · filed Oct 11, 2023. View entity profile → Other incidents for this victim →
incident inc_4d2f64d0ee4f430b · merge_method deterministic
Discovered → first regulatory filing
Discovery to SEC materiality determination
FEDERAL
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.
all SEC 8-K
Earliest sighting first · deep chronology in Litigation Timeline
Oct 10, 2023
When the intrusion reportedly occurred, per the linked filings
Oct 10, 2023
Reported by SEC 8-K filing
Oct 11, 2023
Registrant determined the incident material — starts the SEC 4-business-day clock
Simpson Manufacturing Co., Inc. disclosed a cybersecurity incident on October 10, 2023, resulting in disruptions to its IT infrastructure. The company engaged third-party experts and took systems offline. Investigation is ongoing.
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.