			UNITED STATES SECURITIES AND EXCHANGE COMMISSION
			Washington, D.C. 20549
			FORM			8-K
			CURRENT REPORT
			Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934
			March 20, 2026
			Date of Report (Date of earliest event reported)

CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 February 24, 2026 Date of Report (Date of earliest event reported)

Commission
File Number

Name of Registrant; State or Other Jurisdiction of Incorporation; Address of Principal Executive Offices; and Telephone Number

IRS Employer Identification Number

001-41137

CONSTELLATION ENERGY CORPORATION

87-1210716

(a Pennsylvania corporation)

1310 Point Street

Baltimore, Maryland 21231-3380

(833) 883-0162

333-85496

CONSTELLATION ENERGY GENERATION, LLC

23-3064219

(a Pennsylvania limited liability company)

200 Energy Way

Kennett Square, Pennsylvania 19348-2473

(833) 883-0162


Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:
☐			Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
☐			Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
☐			Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
☐			Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class

Trading Symbol(s)

Name of each exchange on which registered

CONSTELLATION ENERGY CORPORATION:

Common Stock, without par value

CEG

The Nasdaq Stock Market LLC


Indicate by check mark whether any of the registrants are emerging growth companies as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐


If an emerging growth company, indicate by check mark if any of the registrants have elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

~~Section~~Item 28.01. -Other ~~Financial Information~~ Events

~~Item~~On 2January 7, 2026, Constellation Energy Corporation (Nasdaq: CEG) (“CEG Parent”) and Constellation Energy Generation, LLC, a Pennsylvania limited liability company (“Constellation”) completed the previously announced transactions contemplated by the Agreement and Plan of Merger, dated January 10, 2025 (the “Merger Agreement”), by and among Calpine Corporation, a Delaware corporation (“Calpine”), certain wholly-owned direct and indirect subsidiaries of Calpine and CEG Parent, and Volt Energy Holdings GP, LLC, a Delaware limited liability company, solely in its capacity as the representative of the stockholders of Calpine (the “Merger”).~~02. Results~~ As a result of ~~Operations~~the transactions contemplated by the Merger Agreement, Calpine was converted into a limited liability company, Calpine LLC, and ~~Financial~~became ~~Condition~~an indirect, wholly owned subsidiary of Constellation. In connection with the completion of the Merger, the following financial statements are filed as exhibits hereto:

~~Section~~•The 7audited consolidated financial statements of Calpine as of December 31, 2025 and 2024 and for the years ended December 31, 2025, 2024 and 2023, and the related notes to the consolidated financial statements, which are filed as Exhibit 99.1 to this Current Report on Form 8-K ~~Regulation~~and FDare incorporated herein by reference; and

~~Item~~•The 7unaudited pro forma condensed combined financial statements of CEG Parent and Constellation as of and for the year ended December 31, 2025, and the related notes to the unaudited pro forma condensed combined financial statements, which are filed as Exhibit 99.~~01. Regulation~~2 FDto ~~Disclosure~~this Current Report on Form 8-K and are incorporated herein by reference.

OnThe ~~February~~unaudited ~~24,~~pro ~~2026,~~forma ~~Constellation~~condensed ~~Energy~~combined ~~Corporation~~financial ~~(Nasdaq:~~statements ~~CEG)~~give ~~announced~~pro ~~via~~forma ~~press~~effect ~~release~~to ~~its~~the ~~results~~acquisition ~~for~~of ~~the~~Calpine. ~~fourth~~The ~~quarter~~pro ~~ended~~forma ~~December 31,~~financial ~~2025.~~statements Aare ~~copy~~derived offrom the ~~press~~historical ~~release~~financial ~~and~~statements ~~related~~of ~~attachments~~CEG ~~are~~Parent, ~~attached~~Constellation ~~hereto~~and ~~as Exhibit 99~~Calpine.1.

This Form 8-K and the attached exhibits are provided under Items 2.02, 7.01 and 9.01 of Form 8-K and are furnished to, but not filed with, the Securities and Exchange Commission.

Section 9 - Financial Statements and Exhibits

Item 9.01. Financial Statements and Exhibits

a) Financial statements of business to be acquired

The audited consolidated financial statements of Calpine as of December 31, 2025 and 2024 and for the years ended December 31, 2025, 2024 and 2023, and the related notes to the consolidated financial statements, which are filed as Exhibit 99.1 to this Current Report on Form 8-K and are incorporated herein by reference.

b) Pro forma financial information

The unaudited pro forma condensed combined financial statements of CEG Parent and Constellation as of and for the year ended December 31, 2025, and the related notes to the pro forma combined financial statements, which are filed as Exhibit 99.2 to this Current Report on Form 8-K and are incorporated herein by reference.

(d) Exhibits.

Exhibit No.	~~Description~~	Description
99.1	Press release and earnings release attachments
23.1		Consent of Deloitte & Touche LLP, independent auditors for Calpine.
101	Cover Page Interactive Data File - the cover page XBRL tags are embedded within the Inline XBRL document.
23.2		Consent of PricewaterhouseCoopers LLP, independent auditors for Calpine.
104	The cover page from the Current Report on Form 8-K, formatted as Inline XBRL.
99.1		Historical audited financial statements of Calpine as of December 31, 2025 and 2024 and for the years ended December 31, 2025, 2024 and 2023.
99.2		Unaudited pro forma condensed combined financial statements of CEG Parent and Constellation as of and for the year ended December 31, 2025.
101		Cover Page Interactive Data File - the cover page XBRL tags are embedded within the Inline XBRL document.
104		The cover page from the Current Report on Form 8-K, formatted as Inline XBRL.

* * * * *

This combined Current Report on Form 8-K is being ~~furnished~~ filed separately by Constellation Energy Corporation and Constellation Energy Generation, LLC, (collectively, the “Registrants”). Information contained herein relating to ~~one~~any ofindividual ~~the~~Registrant ~~Registrants~~ has been ~~furnished~~filed by ~~the~~such Registrant on its own behalf. Neither Registrant makes any representation as to information relating to the other Registrant.

This report contains certain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995 that are subject to risks and uncertainties. Words such as “could,” “may,” “expects,” “anticipates,” “will,” “targets,” “goals,” “projects,” “intends,” “plans,” “believes,” “seeks,” “estimates,” “predicts,” and variations on such words, and similar expressions that reflect our current views with respect to future events and operational, economic, and financial performance, are intended to identify such forward-looking statements. These forward-looking statements include, but are not limited to, statements regarding the acquisition of Calpine Corporation, the pro forma combined company and its operations, strategies and plans, enhancements to investment-grade credit profile, synergies, opportunities and anticipated future performance and capital structure, and expected accretion to earnings per share and free cash flow. Information adjusted for the acquisition should not be considered a forecast of future results.

Forward-looking statements are based on current expectations, estimates and assumptions that involve a number of risks and uncertainties that could cause actual results to differ materially from those projected. The factors that could cause actual results to differ materially from the forward-looking statements made by the Registrants include those factors discussed herein, as well as the items discussed in (1) the Registrants' combined 2025 Annual Report on Form 10-K (to be filed on February 24, 2026) in (a) Part I, ITEM 1A. Risk Factors, (b) Part II, ITEM 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations, and (c) Part II, ITEM 8. Financial Statements and Supplementary Data: Note 18, Commitments and Contingencies; and (2) other factors discussed in filings with the SEC by the Registrants.

Investors are cautioned not to place undue reliance on these forward-looking statements, whether written or oral, which apply only as of the date of this report. Neither Registrant undertakes any obligation to publicly release any revision to its forward-looking statements to reflect events or circumstances after the date of this report.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, each Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

CONSTELLATION ENERGY CORPORATION /s/ Shane P. Smith Shane P. Smith Executive Vice President and Chief Financial Officer ~~Constellation Energy Corporation~~ CONSTELLATION ENERGY GENERATION, LLC /s/ Shane P. Smith Shane P. Smith Executive Vice President and Chief Financial Officer ~~Constellation Energy Generation, LLC~~

~~February~~March 2420, 2026

EXHIBIT INDEX


Exhibit No.						Description
23.1						Consent of Deloitte & Touche LLP, independent auditors for Calpine.
23.2						Consent of Pricewaterhouse Coopers LLP, independent auditors for Calpine.
99.1						Historical audited financial statements of Calpine as of December 31, 2025 and 2024 and for the years ended December 31, 2025, 2024 and 2023.
99.2						Unaudited pro forma condensed combined financial statements of CEG Parent and Constellation as of and for the year ended December 31, 2025.
101						Cover Page Interactive Data File - the cover page XBRL tags are embedded within the Inline XBRL document.
104						The cover page from the Current Report on Form 8-K, formatted as Inline XBRL.

Exhibit No.			Description
99.1			Press release and earnings release attachments
101			Cover Page Interactive Data File - the cover page XBRL tags are embedded within the Inline XBRL document.
104			The cover page from the Current Report on Form 8-K, formatted as Inline XBRL.

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