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McKesson8-K: Cybersecurity incident

McKesson discloses cybersecurity incident discovered on August 25, 2026

Read at SEC EDGAR

Source

SEC EDGARAug 28, 2026

Current report (Form 8-K)

McKesson 8-K

Filing excerpt

On August 25, 2026, McKesson Corporation discovered a cybersecurity incident affecting its information systems.

sec.gov/Archives/edgar/data/927653/000092765326000247/mck-20260825.htmRead the full source

Other signals in this filing (1)

Extracted by Autobound

From the Signal API record
Signal
8-K: Cybersecurity incident

What this signalsFilings often name leadership changes, deals and spending plans.

Form
8-K
Fiscal year end
08/25
Filed
Aug 28, 2026

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The full record

From the Signal API record

Details

CIK
927653
Accession number
0000927653-26-000247
Timeframe
Immediate
Filing year
2026
Why it matters
Urgent security needs
Signal category
Technology

Extraction

Confidence
High
Relevance
90%
Sentiment
Negative
Detected
Sep 1, 2026
signal_type
sec-8k
signal_subtype
cybersecurityIncident

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The API returns more than this page shows

This page shows a preview. The full sec-8k record in the Signal API and MCP can also have these 8 fields. Some fields are empty for some signals.

Company

  • linkedin_urlValue in the API
  • industriesValue in the API
  • employee_count_lowValue in the API
  • employee_count_highValue in the API
  • revenueValue in the API
  • descriptionValue in the API

Signal

  • signal_nameValue in the API
  • associationValue in the API
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Show the full JSONThe record on this page and the API request

GET /v1/signals/154c98b3-1c1f-4c33-87ed-20ae54ef6d89 returns this record as JSON. POST /v1/companies/enrich returns every signal for mckesson.com.

{
  "signal_id": "154c98b3-1c1f-4c33-87ed-20ae54ef6d89",
  "signal_type": "sec-8k",
  "signal_subtype": "cybersecurityIncident",
  "detected_at": "2026-09-01T07:05:43.993+00:00",
  "company": {
    "name": "McKesson",
    "domain": "mckesson.com"
  },
  "data": {
    "detail": "The company is in the early stages of investigating a breach of its information systems, creating urgent needs for incident response, forensic analysis, and enhanced security infrastructure to prevent further damage and operational disruption.",
    "metrics": {
      "timeframe": "immediate"
    },
    "summary": "McKesson discloses cybersecurity incident discovered on August 25, 2026",
    "excerpts": "On August 25, 2026, McKesson Corporation discovered a cybersecurity incident affecting its information systems.",
    "relevance": 0.9,
    "sentiment": "negative",
    "confidence": "high",
    "source_url": "https://www.sec.gov/Archives/edgar/data/927653/000092765326000247/mck-20260825.htm",
    "filing_date": "2026-08-28",
    "filing_year": 2026,
    "fiscal_year_end": "08/25",
    "sales_relevance": "Urgent security needs",
    "signal_category": "technology"
  }
}

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