8-K Filings

Overview

The 8-K is a current report that US public companies must file to announce material events—leadership changes, acquisitions, major contracts, restructurings, and more.

Every week, we scan SEC EDGAR for new 8-K filings across 8,000+ publicly traded companies. Unlike 10-K and 10-Q filings, 8-Ks are event-driven—companies must file within 4 business days of a material event.

Because material events happen constantly, 8-Ks are by far our highest-volume SEC signal. This makes them especially valuable for fill rates and coverage—if you're looking for fresh signal on a given company, there's a good chance we have a recent 8-K.

Each filing is classified into one or more of 70+ event subtypes using a model we've fine-tuned specifically for SEC document analysis. Because 8-Ks capture discrete events rather than comprehensive annual/quarterly narratives, they typically produce 1-3 highly focused signals per filing.

Available Subtypes

Signal Categories

Signals are organized into these categories:

Schema

{
  "signal_id": "9873367d-66a0-408e-9ce8-197872e72cbf",
  "batch_id": "c2cf7d6d",
  "signal_type": "8k",
  "signal_subtype": "acquisitionAnnounced",
  "detected_at": "2026-01-08T14:22:18.386003Z",
  "association": "company",
  "company": {
    "name": "Cable One, Inc.",
    "domain": "www.cableone.biz",
    "ticker": "CABO",
    "linkedin_url": "https://www.linkedin.com/company/cable-one",
    "industries": [
      "Telecommunications Services"
    ],
    "employee_count_low": 2817,
    "employee_count_high": 2817,
    "description": "Cable One, Inc. is a leading broadband communications provider serving residential and business customers in 24 states."
  },
  "data": {
    "summary": "Cable One to acquire remaining 55% of Mega Broadband Investments (Vyve Broadband) for ~$485M.",
    "detail": "Cable One will fully consolidate Mega Broadband Investments (MBI) by Q4 2026, creating an urgent need for post-merger integration services, including system consolidation (billing, CRM, network), data migration, and change management.",
    "relevance": 0.95,
    "confidence": "high",
    "sentiment": "neutral",
    "excerpts": "Cable One entered into a Purchase Agreement to acquire the equity interests in MBI that it does not already own for approximately $485 million.",
    "source_url": "https://www.sec.gov/Archives/edgar/data/1632127/000095015726000007/form8-k.htm",
    "technologies_mentioned": [
      "broadband",
      "fiber connectivity"
    ],
    "competitors_mentioned": [],
    "vendors_mentioned": [],
    "regions_mentioned": [
      "Southeast",
      "Northwest",
      "Mid-South United States"
    ],
    "fiscal_year_end": null,
    "filing_date": "2026-01-06",
    "filing_year": 2026,
    "sales_relevance": "Integration needs coming",
    "signal_category": "strategic",
    "metrics": {
      "dollar_millions": 485,
      "dollar_context": "Purchase price for remaining 55% of Mega Broadband Investments",
      "pct": 0.55,
      "pct_context": "Equity stake in MBI being acquired",
      "timeframe": "current_year"
    }
  }
}

Field Reference

Core Fields

Company Object

Data Object

Data Activation

Timing

detected_at is when Autobound extracted the signal. 8-Ks are event-driven filings that disclose material events within 4 business days of occurrence.

Use data.filing_date to understand when the filing was actually submitted to the SEC.

Uniqueness

One signal per subtype per filing. Unlike 10-K/10-Q, companies can file multiple 8-Ks per day, so expect many signals per company over time.

Delivery

Each delivery arrives in a timestamped folder. Signals in that folder cover the window between this delivery and the previous one. Treat all signals in a new folder as recent and actionable—no need to diff against prior deliveries.

Best Practices

• Filter on relevance and confidence both above 0.9 for high-precision use cases
• Build picklists from signal_subtype values
• 8-K signals are the most time-sensitive SEC signals - prioritize quick action

API Usage

Generate Content API

{
  "enabledInsights": [
    "cfoChange",
    "ceoChange",
    "acquisitionCompleted"
  ],
  "disabledInsights": []
}

Generate Insights API

{
  "insightSubtype": "cfoChange"
}

Example Output

"Saw Cable One just announced a $485M acquisition to fully consolidate Vyve Broadband. Post-merger integrations like this typically trigger a full review of billing, CRM, and network systems—would love to share how we're helping similar telecom companies streamline M&A integrations."

Coverage

• Refresh: As-Filed
• Coverage: ~8,000+ US public companies
• Best for: US enterprise accounts, Leadership change triggers, M&A tracking