Form 4: Mirion Technologies Director Sells 500,000 Shares Under Pre-Arranged Trading Plan

Mirion Technologies, Inc. Director Lawrence D. Kingsley reported the sale of 500,000 shares of Class A Common Stock through two family trusts under a Rule 10b5-1 trading plan.

Summary

• Lawrence D. Kingsley, a Director of Mirion Technologies, Inc. (MIR), reported transactions involving the sale of Class A Common Stock.
• A total of 500,000 shares were sold on May 21, 2025, through two separate family trusts.
• 350,000 shares were sold by the Diane Kingsley Revocable Trust at a weighted average price of $17.945 per share, with individual transaction prices ranging from $17.88 to $18.06.
• An additional 150,000 shares were sold by the Lawrence D. Kingsley 2015 Family Irrevocable Trust at a weighted average price of $17.944 per share, with individual transaction prices ranging from $17.89 to $18.05.
• Following these transactions, the Diane Kingsley Revocable Trust and the Lawrence D. Kingsley 2015 Family Irrevocable Trust no longer beneficially own shares.
• Lawrence D. Kingsley continues to beneficially own 4,200,000 shares indirectly through the Lawrence D. Kingsley Revocable Trust and 61,287 shares directly.
• The sales were conducted pursuant to a Rule 10b5-1(c) trading plan, indicating they were pre-scheduled.

Sentiment

Score: 4

Explanation: The sentiment is moderately negative due to a significant insider sale, which can be perceived as a lack of confidence, despite being executed under a pre-arranged 10b5-1 plan.

Negatives

• A director selling a significant number of shares (500,000 shares) can be perceived negatively by the market, potentially signaling a lack of confidence or a desire to diversify holdings.
• The sales represent a substantial reduction in the holdings of the specific trusts involved, bringing their beneficial ownership to zero.

Risks

• Large insider sales, even if pre-planned, can sometimes lead to negative market sentiment or increased scrutiny from investors regarding the company's future prospects.

Future Outlook

This Form 4 filing does not provide any forward-looking statements or guidance regarding the company's future performance or outlook.

Industry Context

This filing is an insider transaction report specific to Mirion Technologies, Inc. and its director. It does not provide information on broader industry trends or competitive landscape.

Related Party Transactions

• The sales were conducted by the Diane Kingsley Revocable Trust and the Lawrence D. Kingsley 2015 Family Irrevocable Trust, which are considered related parties to Director Lawrence D. Kingsley.

Stakeholder Impact

• Shareholders may view the significant insider selling as a potential negative indicator, which could influence investor confidence and stock price.

Key Dates

Keywords

Mirion Technologies, MIR, Form 4, Insider Trading, Stock Sale, Director, Lawrence D. Kingsley, 10b5-1 Plan, Equity Transaction