Knife River Corporation

ent_6142af9292e681e97c357c70

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Disclosures

SEC 10-K Item 1C · 1 jurisdiction

Incidents

—

no linked incident in sample

Max affected reported

—

no filed count in sample

Leak-site claims

none in sample

Identity resolution

Canonical name: Knife River Corporation
Normalized: knife river— dedupe via name-norm; Microsoft / MSFT collapse to one row
GLEIF LEI: No match
SEC EDGAR CIK: None — not an SEC registrant
Domain: None on record

Disclosure history (1)newest first

FEDERALSEC 10-K Item 1Cas victim2026-02-20
Knife River Corporation (SEC 10-K Item 1C) discloses no actual cybersecurity incidents. The filing details a robust cyber risk management program, including CMMC compliance, employee phishing tests, external penetration testing, and third-party vendor risk monitoring. The company states that past incidents have not materially affected its business, though future attacks could.

Subsidiary disclosures (2)filed by group companies

◈ These filings were made by or about subsidiaries of Knife River Corporation — not by Knife River Corporation itself. Corporate relationships are mapped from GLEIF relationship records and SEC Exhibit 21 filings.

Tracked subsidiaries✦ Albina Asphalt ✦ Concrete ✦ STRATA CORPORATION