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Constellation Energy8-K: Acquisition completed

Constellation Energy completes acquisition of Calpine Corporation, initiating major business integration.

What happened

Constellation has finalized its acquisition of Calpine, making it a wholly owned subsidiary.

Source

SEC EDGARJan 15, 2026

Current report (Form 8-K)

Constellation Energy 8-K

Filing excerpt

As previously announced, on January 7, 2026, Constellation Energy Corporation (Nasdaq: CEG)... completed the previously announced transactions contemplated by the Agreement and Plan of Merger...

sec.gov/Archives/edgar/data/1168165/000186827526000009/ceg-20260115.htmRead the full source

Other signals in this filing (2)

Extracted by Autobound

From the Signal API record
Signal
8-K: Acquisition completed

What this signalsIntegration work after a deal often opens needs for new systems and services.

Form
8-K
Filed
Jan 15, 2026

The full record

From the Signal API record

Details

CIK
1168165
Accession number
0001868275-26-000009
Timeframe
Immediate
Filing year
2026
Why it matters
Active integration needs
Signal category
Strategic

Topics and mentions

Vendors

  • U.S. Bank Trust Company
  • National Association
  • Wilmington Trust

Vendors named

  • U.S. Bank Trust Company, National Association
  • Wilmington Trust, National Association

Extraction

Confidence
High
Relevance
90%
Sentiment
Neutral
Detected
Feb 3, 2026
signal_type
sec-8k
signal_subtype
acquisitionCompleted

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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
Show the full JSONThe record on this page and the API request

GET /v1/signals/44dc4256-1166-4f69-be66-ee17455fddfc returns this record as JSON. POST /v1/companies/enrich returns every signal for constellationenergy.com.

{
  "signal_id": "44dc4256-1166-4f69-be66-ee17455fddfc",
  "signal_type": "sec-8k",
  "signal_subtype": "acquisitionCompleted",
  "detected_at": "2026-02-03T13:10:13.623+00:00",
  "company": {
    "name": "Constellation Energy",
    "domain": "constellationenergy.com"
  },
  "data": {
    "detail": "Constellation has finalized its acquisition of Calpine, making it a wholly owned subsidiary. This triggers a massive integration effort across all business functions, creating immediate needs for IT system consolidation, financial reporting alignment, and operational process harmonization to achieve planned synergies.",
    "metrics": {
      "timeframe": "immediate"
    },
    "summary": "Constellation Energy completes acquisition of Calpine Corporation, initiating major business integration.",
    "excerpts": "As previously announced, on January 7, 2026, Constellation Energy Corporation (Nasdaq: CEG)... completed the previously announced transactions contemplated by the Agreement and Plan of Merger...",
    "relevance": 0.9,
    "sentiment": "neutral",
    "confidence": "high",
    "source_url": "https://www.sec.gov/Archives/edgar/data/1168165/000186827526000009/ceg-20260115.htm",
    "filing_date": "2026-01-15",
    "filing_year": 2026,
    "sales_relevance": "Active integration needs",
    "signal_category": "strategic",
    "vendors_mentioned": [
      "U.S. Bank Trust Company, National Association",
      "Wilmington Trust, National Association"
    ]
  }
}

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