Mirion Technologies (MIR) closes acquisition of Paragon Energy Solutions parent

Rhea-AI Filing Summary

Mirion Technologies, Inc. announced that it has completed its previously disclosed acquisition of all outstanding membership interests of WCI-Gigawatt Intermediate Holdco, LLC, the indirect parent of Paragon Energy Solutions, LLC, on December 1, 2025. This transaction moves Paragon and its operations fully under Mirion’s control through the acquired holding company structure. While financial terms are not detailed here, closing the deal marks the transition from announcement to execution and confirms that required closing conditions have been satisfied.

Insights

M&A and industrials analyst

Mirion closes the Paragon Energy Solutions acquisition, moving from intent to execution.

Mirion Technologies has completed its acquisition of all membership interests in WCI-Gigawatt Intermediate Holdco, LLC, which indirectly owns Paragon Energy Solutions, LLC, effective December 1, 2025. Completion means the transaction has cleared its conditions and Paragon now sits within Mirion’s corporate structure via the holding company.

The announcement focuses on legal completion and does not provide consideration, revenue, or earnings figures tied to Paragon. Without those details, the direct financial impact, including any change to Mirion’s scale or profitability, cannot be assessed from this text alone.

Subsequent quarterly or annual reports may describe how Paragon’s business is integrated and how it contributes to Mirion’s results after the December 1, 2025 closing.

8-K Event Classification

2 items: 8.01, 9.01

2 items

Item 8.01 Other Events Other

Voluntary disclosure of events the company deems important to shareholders but not covered by other items.

Item 9.01 Financial Statements and Exhibits Exhibits

Financial statements, pro forma financial information, and exhibit attachments filed with this report.

Understanding 8-K Material Events →

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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

Date of Report (date of earliest event reported): December 1, 2025

Mirion Technologies, Inc.

(Exact Name of Registrant as Specified in Its Charter)

Delaware			001-39352			83-0974996
(State or Incorporation)			(Commission File Number)			(I.R.S. Employer Identification Number)
			1218 Menlo Drive
			Atlanta, Georgia 30318
			(Address of Principal Executive Offices)
			(770) 432-2744
			(Registrant's telephone number, including area code)

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

Class A common stock, $0.0001 par value per share

MIR

New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company 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 the registrant has 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. ☐

Item 8.01. Other Events.

On December 1, 2025, Mirion Technologies, Inc. completed its previously announced acquisition of all of the outstanding membership interests of WCI-Gigawatt Intermediate Holdco, LLC, the indirect parent of Paragon Energy Solutions, LLC.

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits

EXHIBIT INDEX

Exhibit Number						Description
104						Cover Page Interactive Data File (embedded within the Inline XBRL document).

SIGNATURE

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

Date: December 1, 2025

Mirion Technologies, Inc.

By:    /s/ Brian Schopfer    

Name:    Brian Schopfer

Title:    Chief Financial Officer

FAQ

What did Mirion Technologies (MIR) announce regarding Paragon Energy Solutions?

Mirion Technologies announced that it has completed its previously disclosed acquisition of all outstanding membership interests of WCI-Gigawatt Intermediate Holdco, LLC, the indirect parent of Paragon Energy Solutions, LLC, on December 1, 2025.

Who did Mirion Technologies (MIR) acquire to obtain Paragon Energy Solutions?

Mirion acquired all of the outstanding membership interests of WCI-Gigawatt Intermediate Holdco, LLC, which is the indirect parent company of Paragon Energy Solutions, LLC.

When did Mirion Technologies close its acquisition related to Paragon Energy Solutions?

The acquisition of all outstanding membership interests of WCI-Gigawatt Intermediate Holdco, LLC by Mirion Technologies was completed on December 1, 2025.

Does Mirion Technologies provide financial details of the Paragon Energy Solutions acquisition?

The announcement confirms completion of the acquisition of WCI-Gigawatt Intermediate Holdco, LLC, the indirect parent of Paragon Energy Solutions, but does not provide financial terms or consideration details.

How is Paragon Energy Solutions related to Mirion Technologies after this transaction?

After completion of the transaction, Paragon Energy Solutions, LLC becomes indirectly owned by Mirion Technologies through its ownership of all membership interests in WCI-Gigawatt Intermediate Holdco, LLC.

What type of security does Mirion Technologies (MIR) have listed on the NYSE?

Mirion Technologies has its Class A common stock, with a par value of $0.0001 per share, listed on the New York Stock Exchange under the trading symbol MIR.