Mirion Technologies refinances $450M term loans due 2032

Mirion Technologies announced that its subsidiaries entered into Amendment No. 6 to their Credit Agreement, creating a new $450,000,000 tranche of term loans maturing on June 5, 2032.

Rhea-AI Filing Summary

Mirion Technologies announced that its subsidiaries entered into Amendment No. 6 to their Credit Agreement, creating a new $450,000,000 tranche of term loans maturing on June 5, 2032. These "Replacement Term Loans" were used, along with other cash sources, to refinance all term loans outstanding under the prior Credit Agreement.

The new loans carry an applicable margin of 2.00% for Term SOFR Loans and 1.00% for ABR Loans, with a 25 basis point reduction in each margin if Mirion achieves and maintains a Ba3 corporate rating from Moody’s and a BB- corporate rating from S&P. The loans have a SOFR credit spread adjustment of 0.00% and a SOFR floor of 0.00%, and include a 1% prepayment premium if repaid in connection with a repricing transaction within six months of the amendment date.

Insights

Corporate credit analyst

Mirion refinances $450M of term debt with a new 2032 facility.

Mirion Technologies has arranged a new $450,000,000 tranche of term loans maturing on June 5, 2032, and used the proceeds, together with other cash sources, to refinance all term loans outstanding under its existing Credit Agreement. This extends the debt maturity profile and keeps the structure within a syndicated bank facility led by Citibank, N.A. as administrative and collateral agent.

The Replacement Term Loans carry an applicable margin of 2.00% over Term SOFR and 1.00% over ABR, with a 25 basis point margin reduction if the company maintains a Ba3 rating from Moody’s and a BB- rating from S&P. The SOFR credit spread adjustment and SOFR floor are both stated at 0.00%, and there is a 1% prepayment premium for repricing transactions within six months of the amendment date.

This structure links Mirion’s borrowing costs directly to its future corporate credit ratings and specifies early repricing economics in the near term. Subsequent disclosures in company filings may provide more detail on how this refinancing interacts with Mirion’s broader capital structure and interest expense.

8-K Event Classification

3 items: 1.01, 2.03, 9.01

3 items

Item 1.01 Entry into a Material Definitive Agreement Business

The company signed a significant contract such as a merger agreement, credit facility, or major partnership.

Item 2.03 Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement Financial

The company incurred a new significant debt or off-balance-sheet obligation.

Item 9.01 Financial Statements and Exhibits Exhibits

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

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did Mirion Technologies (MIR) announce in this 8-K?

Mirion Technologies reported that its subsidiaries entered into Amendment No. 6 to the Credit Agreement, establishing new Replacement Term Loans and refinancing all previously outstanding term loans under that agreement.

How large is the new term loan tranche Mirion Technologies (MIR) put in place?

The amendment provides for a new $450,000,000 tranche of Replacement Term Loans, which were used, along with other cash sources, to refinance all term loans outstanding under the prior Credit Agreement.

What are the interest margins on Mirion Technologies' new Replacement Term Loans?

The applicable margin is 2.00% for Replacement Term Loans that are Term SOFR Loans and 1.00% for Replacement Term Loans that are ABR Loans, with both margins reduced by 25 basis points if specified Moody’s and S&P rating levels are achieved and maintained.

When do Mirion Technologies' new Replacement Term Loans mature?

The Replacement Term Loans have a stated maturity date of June 5, 2032, extending Mirion’s term debt obligations to that date under the amended Credit Agreement.

Is there a prepayment premium on Mirion Technologies' new term loans?

Yes. The Replacement Term Loans are subject to a 1% prepayment premium if they are prepaid in connection with a repricing transaction that occurs within six months of the amendment date.

How do credit ratings affect Mirion Technologies' new loan margins?

If Mirion achieves and maintains a Ba3 corporate rating from Moody’s and a BB- corporate rating from S&P, the applicable margins on the Replacement Term Loans are reduced by 25 basis points for both Term SOFR and ABR borrowings.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 12/08/2025 - 04:13 PM Learn about SEC filing dates

FALSE000180998700018099872025-12-082025-12-08

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 8, 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 1.01. Entry into a Material Definitive Agreement.

Credit Agreement Refinancing

On December 8, 2025, Mirion IntermediateCo, Inc. (“Holdings”), Mirion Technologies (US Holdings), Inc. and Mirion Technologies (US), Inc. (together with Mirion Technologies (US Holdings), Inc., the “Borrowers”) entered into Amendment No. 6 to Credit Agreement (“Amendment No. 6”) which amends the Credit Agreement, dated as of October 20, 2021 (as amended by the Agreement and Amendment No. 1 to Credit Agreement dated as of November 22, 2021, as further amended by Amendment No. 2 to Credit Agreement dated as of June 23, 2023, as further modified by the Holdings Assumption Agreement dated as of December 30, 2023, as further amended by Amendment No. 3 to Credit Agreement dated as of May 22, 2024, as further amended by Amendment No. 4 to Credit Agreement dated as of March 21, 2025, as further amended by Amendment No. 5 to Credit Agreement dated as of June 5, 2025, and as further amended, restated, supplemented or otherwise modified, refinanced or replaced from time to time, the “Credit Agreement”), by and among the Borrowers, Holdings, the lending institutions from time to time party thereto, and Citibank, N.A as the Administrative Agent and the Collateral Agent. Capitalized terms used herein, but not otherwise defined herein are as defined in the Credit Agreement.

Amendment No. 6 provides for, among other things, a new $450,000,000 tranche of term loans maturing in 2032 (the “Replacement Term Loans”), the proceeds of which (along with other cash sources) were used to refinance all Term Loans outstanding under the Credit Agreement immediately prior to giving effect to the Amendment. Pursuant to Amendment No. 6, the Applicable Margin is (i) 2.00% for the Replacement Term Loans that are Term SOFR Loans and (ii) 1.00% for the Replacement Term Loans that are ABR Loans, in each case with a 25 basis point reduction in rate upon achievement and maintenance of a Ba3 corporate rating from Moody’s and a BB- corporate rating from S&P. The Replacement Term Loans have a SOFR credit spread adjustment of 0.00% and a SOFR “floor” of 0.00%. The Replacement Term Loans have a stated maturity date of June 5, 2032, and are subject to a prepayment premium of 1% if made subject to a repricing transaction within six months of the date hereof.

The foregoing description of Amendment No. 6 is qualified in its entirety by reference to the full text of Amendment No. 6, which is filed as Exhibit 10.1 to this Current Report on Form 8-K and is incorporated herein by reference.

Item 2.03. Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant.

The information set forth in Item 1.01 of this Current Report on Form 8-K is hereby incorporated by reference into this Item 2.03.

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits

EXHIBIT INDEX

Exhibit Number						Description
10.1						Amendment No. 6 to Credit Agreement by and among Mirion IntermediateCo, Inc., Mirion Technologies (US Holdings), Inc. and Mirion Technologies (US), Inc., the other Credit Parties party thereto, the lending institutions from time to time party thereto and Citibank, N.A., effective as of December 8, 2025.
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 8, 2025

Mirion Technologies, Inc.

By:    /s/ Brian Schopfer    

Name:    Brian Schopfer

Title:    Chief Financial Officer