Mirion Technologies, Inc.

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of

the Securities Exchange Act of 1934

MIRION TECHNOLOGIES, INC.

(Name of Registrant as Specified In Its Charter)

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

Payment of Filing Fee (Check the appropriate box):

1218 Menlo Drive

Atlanta, GA 30318

Telephone: (770) 432-2744

April 1, 2026

Dear Fellow Stockholders:

We are pleased to invite you to join us for Mirion’s 2026 Annual Stockholders' Meeting. The meeting is scheduled to take place virtually on Wednesday, May 13, 2026 at 10:00 a.m. (Eastern Time), via live webcast at www.virtualshareholdermeeting.com/MIR2026.

Momentum continues to build broadly across the nuclear power and cancer care end-markets. In the nuclear power market, power availability is becoming increasingly critical to support data center and artificial intelligence infrastructure. Similarly, in cancer care, structural factors such as an aging global population and elevating standards of care in developing markets are driving increased demand for cancer care.

In 2025 we booked a record $1+ billion of orders. This reflects a 26% increase compared to 2024, driven by both the tailwinds in our key vertical markets and our augmented capabilities. Notably, 2025 organic revenue from both our Nuclear Power and Nuclear Medicine end-markets grew double-digits.

2025 also reflected progress on our stated goal to increase our nuclear power exposure. In July, we acquired Certrec, and in December we closed on the acquisition of Paragon Energy Solutions. Both acquisitions enhance our nuclear power exposure and provide opportunities across the lifespan of both large-scale nuclear reactors and the emerging class of advanced and small modular reactors. Pro-forma commercial nuclear power revenue is now approximately 47% of Mirion revenue, up significantly from 37% prior to these acquisitions.

On behalf of our employees and Board of Directors, we thank you for your support of Mirion. We encourage you to cast your vote on the items up for vote at our 2026 Annual Stockholders’ Meeting, which are laid out in the accompanying proxy statement along with voting instructions.

Respectfully,

Thomas D. Logan

Chief Executive Officer and Chairman of the Board

1218 Menlo Drive

Atlanta, GA 30318

Notice of Annual Meeting of Stockholders

Wednesday May 13, 2026

10:00 a.m. Eastern Time

Notice is hereby given that the 2026 Annual meeting of stockholders (the “Annual Meeting”) of Mirion Technologies, Inc., a Delaware corporation (the “Company,” “Mirion” or “we”), will be held on May 13, 2026 at 10:00 a.m. (Eastern Time), via live webcast at www.virtualshareholdermeeting.com/MIR2026. The principal business of the Annual Meeting will be to:

1. Elect directors for a one-year term;

2. Ratify the appointment of Deloitte & Touche, LLP (“Deloitte”) as our independent registered public accounting firm for the fiscal year ending December 31, 2026;

3. Approve, on a non-binding advisory basis, the compensation of our named executive officers as disclosed in the accompanying proxy statement (the “Say-on-Pay Proposal”); and

4. Transact any other business as may properly come before the meeting or any adjournment, postponement or continuation thereof.

You can vote at the Annual Meeting in person or by proxy if you were a stockholder of record at the close of business on March 16, 2026. You may revoke your proxy at any time prior to its exercise at the Annual Meeting. To facilitate voting, Internet and telephone voting are available. The instructions for voting are on the proxy card. If you hold your shares through a bank, broker or other holder of record, please follow the voter instructions you received from the holder of record.

The 2026 Annual Meeting will be virtual. You may attend the Annual Meeting and vote your shares electronically during the Annual Meeting via live webcast at www.virtualshareholdermeeting.com/MIR2026. You will need the 16-digit control number that is printed on your proxy card, voter instruction form or notice of internet availability of proxy materials, to enter the Annual Meeting. Mirion recommends that you log in 15 minutes before the Annual Meeting to ensure you are logged in when the Annual Meeting starts. We are electronically disseminating Annual Meeting materials to our stockholders, as permitted under the "Notice and Access" rules approved by the United States Securities and Exchange Commission. Stockholders who have not opted out of Notice and Access will receive a Notice of Internet Availability of Proxy Materials containing instructions on how to access Annual Meeting materials via the Internet. The Notice also provides instructions on how to obtain paper copies if preferred. Your vote is important. Please act as soon as possible to vote your shares.

By Order of the Board of Directors,

Emmanuelle LeeExecutive Vice President,Secretary and Chief Legal Officer

Atlanta, GA

April 1, 2026

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