Director’s Major Stock Sale Shakes Up Mirion Technologies

New insider activity at Mirion Technologies ( (MIR) ) has taken place on December 12, 2025.

Director Lawrence Kingsley has made a significant move by selling 350,000 shares of Mirion Technologies stock, amounting to a substantial transaction worth $8,652,000.

Recent Updates on MIR stock

Mirion Technologies has recently made significant financial and strategic moves, including the completion of its acquisition of WCI-Gigawatt Intermediate Holdco, LLC, which is expected to bolster its market position in the energy solutions sector. Additionally, the company entered into Amendment No. 6 to its Credit Agreement, introducing a new $450 million tranche of term loans maturing in 2032 to refinance existing loans. Analysts have mixed views on the stock, with some maintaining a Buy rating due to Mirion’s strong market position in the nuclear sector and potential for growth driven by artificial intelligence. However, concerns about high valuation and technical indicators suggest caution. Evercore ISI initiated coverage with an Outperform rating, noting Mirion’s significant presence in the global nuclear reactor fleet and potential for improved EBITDA margins.

Spark’s Take on MIR Stock

According to Spark, TipRanks’ AI Analyst, MIR is a Neutral.

Mirion Technologies demonstrates strong financial performance and strategic growth through acquisitions, particularly in the nuclear power sector. However, the high valuation and neutral technical indicators suggest caution. The company’s ability to sustain growth and improve operational efficiency will be crucial for future performance.

To see Spark’s full report on MIR stock, click here.

More about Mirion Technologies

YTD Price Performance: 55.38%

Average Trading Volume: 4,853,847

Technical Sentiment Signal: Buy

Current Market Cap: $6.4B