SCHEDULE: Vanguard Boosts Stake in Mirion Technologies to 12.45%

The Vanguard Group has reported an increased beneficial ownership of 12.45% in Mirion Technologies Inc., holding over 30 million shares.

Summary

• The Vanguard Group, an investment adviser, has filed an Amendment No. 3 to Schedule 13G regarding its beneficial ownership in Mirion Technologies Inc.
• As of the event date of September 30, 2025, Vanguard beneficially owns 30,418,327 shares of Mirion Technologies Inc. Common Stock.
• This represents 12.45% of the class of securities.
• Vanguard holds sole dispositive power over 28,513,549 shares and shared dispositive power over 1,904,778 shares.
• Vanguard has shared voting power over 1,646,311 shares and no sole voting power.
• The securities were acquired and are held in the ordinary course of business and not for the purpose of changing or influencing control of the issuer.

Sentiment

Score: 6

Explanation: The filing indicates a significant, passive institutional investment by Vanguard, which is generally a neutral to slightly positive signal for a company, suggesting it meets the criteria for inclusion in Vanguard's funds.

Positives

• The significant stake held by a major institutional investor like The Vanguard Group may signal confidence in Mirion Technologies Inc.'s long-term prospects.
• Vanguard's ownership of 12.45% indicates a substantial, passive investment, suggesting stability rather than activist intent.

Future Outlook

NA

Management Comments

• The Vanguard Group certifies that, to the best of its knowledge and belief, the securities were acquired and are held in the ordinary course of business and not for the purpose or with the effect of changing or influencing the control of Mirion Technologies Inc.

Industry Context

This filing reflects a routine disclosure by a large asset manager, The Vanguard Group, regarding its passive investment holdings. Such filings are common for major index fund providers and institutional investors, indicating their portfolio allocations rather than specific industry-driven strategic moves.

Stakeholder Impact

• Shareholders: The significant ownership by The Vanguard Group provides a degree of stability and institutional backing, potentially influencing investor confidence.
• Company Management: Awareness of a large, passive institutional holder like Vanguard can influence corporate governance considerations, though Vanguard explicitly states its holdings are not for control purposes.

Key Dates

Keywords

Mirion Technologies, Vanguard Group, Schedule 13G, Beneficial Ownership, Institutional Investor, Common Stock, SEC Filing, Investment Adviser