8-KOther EventsExhibits & Filings

Constellation Energy Corp 8-K Report, Corporate Update (Dec 9, 2025)

Filed December 9, 2025For Securities:CEG

Summary

Constellation Energy Corporation (CEG) has filed an 8-K report detailing significant steps towards its previously announced acquisition of Calpine Corporation. The company announced on December 9, 2025, the commencement of private exchange offers and related consent solicitations for Calpine's outstanding senior unsecured and secured notes. This move is a crucial part of the planned merger, which aims to make Calpine an indirect, wholly owned subsidiary of Constellation Energy Generation, LLC. Investors should note that these exchange offers and consent solicitations are being conducted under specific terms outlined in a private offering memorandum and are exempt from SEC registration. The primary objective is to facilitate the acquisition by potentially amending Calpine's existing debt agreements. The success of these offers is contingent upon receiving the necessary consents and the ultimate consummation of the merger with Calpine. The filing also includes cautionary statements regarding forward-looking information and potential risks associated with the integration of the two companies.

Key Highlights

  • 1Constellation Energy Corp. (CEG) announced private exchange offers and consent solicitations for Calpine Corporation's outstanding notes.
  • 2This action is a key step in Constellation's planned acquisition of Calpine.
  • 3The offers relate to Calpine's 4.625% Senior Unsecured Notes due 2029, 5.000% Senior Unsecured Notes due 2031, and 3.750% Senior Secured Notes.
  • 4The company is seeking consents to amend Calpine's debt agreements, primarily to eliminate restrictive covenants.
  • 5The exchange offers and consent solicitations are being made in a private offering exempt from SEC registration.
  • 6These actions are conditioned upon receiving requisite consents and the consummation of the Calpine acquisition.
  • 7The filing includes forward-looking statements and highlights potential risks related to the integration of Calpine.

Frequently Asked Questions

Constellation Energy is commencing private exchange offers and consent solicitations for Calpine Corporation's outstanding notes as part of its planned acquisition of Calpine. The goal is to exchange existing Calpine debt for new notes issued by Constellation and to obtain consent from noteholders to amend the terms of Calpine's existing debt, particularly to remove restrictive covenants, which will help facilitate the overall merger.

No, these exchange offers and consent solicitations are being made in a private offering that is exempt from registration under the Securities Act of 1933, as amended. The specific terms and conditions are detailed in a private offering memorandum.

The exchange offers and consent solicitations are conditioned upon several factors, including the receipt of the requisite consents from Calpine's noteholders to amend the existing debt agreements and the ultimate consummation of the planned acquisition of Calpine by Constellation Energy.

Detailed information regarding the terms and conditions of the exchange offers and consent solicitations is available to eligible holders of Calpine Notes in an exchange offer memorandum and consent solicitation statement dated December 9, 2025. A press release related to this announcement is also attached as Exhibit 99.1 to the 8-K filing.