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MIR Insider Trading

Insider Ownership Percentage: 6.30%
Insider Buying (Last 12 Months): $0.00
Insider Selling (Last 12 Months): $31,700,250.00

Mirion Technologies Insider Trading History Chart

This chart shows the insider buying and selling history at Mirion Technologies by year and by quarter.

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Mirion Technologies Share Price & Price History

Current Price: $18.46
Price Change: ▼ Price Decrease of -1.235 (-6.27%)
As of 03/20/2026 04:59 PM ET

This chart shows the closing price history over time for MIR up to the past year.

Skip Chart and Table DataPrice Data in Insider Trading History Table
Days: 30 | 90 | 365

Mirion Technologies Insider Trading History

Transaction DateInsider NameTitleBuy/SellNumber of SharesAverage Share PriceTotal TransactionShares Held After TransactionDetails
12/10/2025Lawrence D. KingsleyDirectorSell350,000$24.73$8,655,500.003,509,075View SEC Filing Icon  
11/21/2025Lawrence D. KingsleyDirectorSell300,000$23.83$7,149,000.003,900,000View SEC Filing Icon  
8/11/2025Thomas D LoganCEOSell325,000$21.31$6,925,750.003,742,305View SEC Filing Icon  
5/21/2025Lawrence D. KingsleyDirectorSell500,000$17.94$8,970,000.0061,287View SEC Filing Icon  
10/31/2024Emmanuelle LeeInsiderSell3,405$14.27$48,589.35View SEC Filing Icon  
10/24/2024Thomas D. LoganCEOSell7,500$14.11$105,825.001,544,017View SEC Filing Icon  
9/24/2024Emmanuelle LeeinsiderSell5,000$10.60$53,000.00138,193View SEC Filing Icon  
9/24/2024Thomas D. LoganCEOSell7,500$10.47$78,525.001,544,017View SEC Filing Icon  
8/23/2024Thomas D. LoganCEOSell7,500$11.00$82,500.001,544,017View SEC Filing Icon  
8/6/2024Loic EloyInsiderSell22,139$9.91$219,397.49177,663View SEC Filing Icon  
7/24/2024Emmanuelle LeeInsiderSell5,000$10.80$54,000.00View SEC Filing Icon  
7/24/2024Thomas D. LoganCEOSell7,500$10.87$81,525.001,544,017View SEC Filing Icon  
6/26/2024Emmanuelle LeeinsiderSell5,000$10.76$53,800.00138,193View SEC Filing Icon  
6/24/2024Thomas D. LoganCEOSell7,500$10.89$81,675.001,544,017View SEC Filing Icon  
6/13/2024Christopher A. MooreCAOSell8,153$10.29$83,894.3728,128View SEC Filing Icon  
6/6/2024Emmanuelle LeeinsiderSell5,000$10.17$50,850.00138,193View SEC Filing Icon  
5/28/2024Thomas D. LoganCEOSell7,500$10.86$81,450.001,544,017View SEC Filing Icon  
3/20/2024Brian SchopferCFOSell90,910$11.00$1,000,010.00211,167View SEC Filing Icon  
5/30/2023Christopher A. MooreCAOSell3,430$7.92$27,165.6032,206View SEC Filing Icon  
See Full Table

SEC Filings (Institutional Ownership Changes) for Mirion Technologies (NYSE:MIR)

78.51% of Mirion Technologies stock is owned by institutions. Institutional ownership can be a sign of analyst confidence in the fundamentals of the stock.

Institutional Buying and Selling by Quarter

This chart shows the instiutional buying and selling at MIR by year and by quarter.

Skip Institutional Buying and Selling Chart and Table DataRead Chart Data in Institutional Trading History Table

Mirion Technologies Institutional Trading History

Reporting DateHedge FundShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
3/17/2026Rockefeller Capital Management L.P.1,139,037$26.68M0.0%+17.2%0.455%Search for SEC Filing on Google Icon
3/10/2026Montanaro Asset Management Ltd255,400$5.98M1.7%+48.8%0.102%Search for SEC Filing on Google Icon
3/9/2026Corient Private Wealth LLC14,510$0.34M0.0%+16.9%0.006%Search for SEC Filing on Google Icon
2/24/2026Pacer Advisors Inc.80,127$1.88M0.0%N/A0.032%Search for SEC Filing on Google Icon
2/19/2026T. Rowe Price Investment Management Inc.15,112,855$353.94M0.2%-29.9%5.955%Search for SEC Filing on Google Icon
2/19/2026Invesco Ltd.3,101,120$72.63M0.0%+12.5%1.222%Search for SEC Filing on Google Icon
2/19/2026Corient Private Wealth LLC14,510$0.34M0.0%+16.9%0.006%Search for SEC Filing on Google Icon
2/18/2026Vident Advisory LLC14,128$0.33M0.0%N/A0.006%Search for SEC Filing on Google Icon
2/18/2026State of Tennessee Department of Treasury74,501$1.85M0.0%+29.7%0.029%Search for SEC Filing on Google Icon
2/18/2026NewEdge Advisors LLC3,251$76K0.0%-29.8%0.001%Search for SEC Filing on Google Icon
2/18/2026Empowered Funds LLC278,820$6.53M0.1%-4.2%0.110%Search for SEC Filing on Google Icon
2/18/2026XTX Topco Ltd125,020$2.93M0.1%N/A0.049%Search for SEC Filing on Google Icon
2/18/2026Zacks Investment Management402,207$9.42M0.1%-1.2%0.158%Search for SEC Filing on Google Icon
2/18/2026VARCOV Co.10,838$0.25M0.1%N/A0.004%Search for SEC Filing on Google Icon
2/18/2026Wellington Management Group LLP248,775$5.83M0.0%N/A0.098%Search for SEC Filing on Google Icon
2/18/2026Toronto Dominion Bank17,746$0.42M0.0%N/A0.007%Search for SEC Filing on Google Icon
2/18/2026Twinbeech Capital LP57,100$1.34M0.1%N/A0.022%Search for SEC Filing on Google Icon
2/18/2026Janus Henderson Group PLC4,596,949$107.66M0.0%-40.0%1.811%Search for SEC Filing on Google Icon
2/18/2026Gotham Asset Management LLC93,039$2.18M0.0%N/A0.037%Search for SEC Filing on Google Icon
2/18/2026Bamco Inc. NY650,000$15.22M0.0%+30.0%0.256%Search for SEC Filing on Google Icon
2/18/2026Boothbay Fund Management LLC173,855$4.07M0.1%+500.5%0.069%Search for SEC Filing on Google Icon
2/18/2026Ardsley Advisory Partners LP325,000$7.61M0.8%-1.0%0.128%Search for SEC Filing on Google Icon
2/18/2026Alta Park Capital LP562,522$13.17M1.6%-8.0%0.222%Search for SEC Filing on Google Icon
2/18/2026Altshuler Shaham Ltd11,704$0.27M0.0%+5.1%0.005%Search for SEC Filing on Google Icon
2/17/2026Schonfeld Strategic Advisors LLC9,198$0.22M0.0%N/A0.004%Search for SEC Filing on Google Icon
2/17/2026Integrated Advisors Network LLC8,957$0.21M0.0%-6.1%0.004%Search for SEC Filing on Google Icon
2/17/2026AQR Capital Management LLC277,719$6.50M0.0%-5.0%0.109%Search for SEC Filing on Google Icon
2/17/2026Troluce Capital Advisors LLC850,000$19.91M12.6%N/A0.335%Search for SEC Filing on Google Icon
2/17/2026Cetera Investment Advisers19,707$0.46M0.0%+10.3%0.008%Search for SEC Filing on Google Icon
2/17/2026Lazard Asset Management LLC143,063$3.35M0.0%-52.3%0.056%Search for SEC Filing on Google Icon
2/17/2026Sandler Capital Management15,194$0.36M0.1%-80.1%0.006%Search for SEC Filing on Google Icon
2/17/2026ArrowMark Colorado Holdings LLC716,065$16.77M0.4%-11.5%0.282%Search for SEC Filing on Google Icon
2/17/2026TCW Group Inc.2,452,579$57.44M0.4%N/A0.966%Search for SEC Filing on Google Icon
2/17/2026Amundi12,300$0.29M0.0%N/A0.005%Search for SEC Filing on Google Icon
2/17/2026FIL Ltd100,000$2.34M0.0%-82.2%0.039%Search for SEC Filing on Google Icon
2/17/2026Laurion Capital Management LP28,188$0.66M0.0%N/A0.011%Search for SEC Filing on Google Icon
2/17/2026T. Rowe Price Investment Management Inc.2,329,002$54.55M0.1%-89.2%0.918%Search for SEC Filing on Google Icon
2/17/2026Weiss Asset Management LP9,720$0.23M0.0%N/A0.004%Search for SEC Filing on Google Icon
2/17/2026Ghisallo Capital Management LLC250,000$5.86M0.3%-67.7%0.099%Search for SEC Filing on Google Icon
2/17/2026Public Employees Retirement System of Ohio5,226$0.12M0.0%+670.8%0.002%Search for SEC Filing on Google Icon
2/17/2026Corsair Capital Management L.P.982,419$23.01M3.6%-6.1%0.387%Search for SEC Filing on Google Icon
2/17/2026California State Teachers Retirement System224,345$5.25M0.0%+13.3%0.088%Search for SEC Filing on Google Icon
2/17/2026Russell Investments Group Ltd.22,080$0.52M0.0%+11.3%0.009%Search for SEC Filing on Google Icon
2/17/2026Maryland State Retirement & Pension System36,281$0.85M0.0%+2.4%0.014%Search for SEC Filing on Google Icon
2/17/2026State of Wisconsin Investment Board226,534$5.31M0.0%+65.6%0.089%Search for SEC Filing on Google Icon
2/17/2026Captrust Financial Advisors25,232$0.59M0.0%+61.2%0.010%Search for SEC Filing on Google Icon
2/17/2026Summit Partners Public Asset Management LLC500,000$11.71M0.2%-58.3%0.197%Search for SEC Filing on Google Icon
2/17/2026Royal Bank of Canada2,147,984$50.31M0.0%-7.0%0.846%Search for SEC Filing on Google Icon
2/17/2026Hollow Brook Wealth Management LLC171,579$4.02M1.0%-32.9%0.068%Search for SEC Filing on Google Icon
2/17/2026Rice Hall James & Associates LLC199,852$4.68M0.3%-10.4%0.079%Search for SEC Filing on Google Icon
2/16/2026Sculptor Capital LP140,000$3.28M0.0%-72.0%0.055%Search for SEC Filing on Google Icon
2/16/2026Thornburg Investment Management Inc.226,209$5.30M0.1%N/A0.089%Search for SEC Filing on Google Icon
2/16/2026Verition Fund Management LLC89,100$2.09M0.0%-45.1%0.035%Search for SEC Filing on Google Icon
2/16/2026MML Investors Services LLC16,604$0.39M0.0%+11.3%0.007%Search for SEC Filing on Google Icon
2/16/2026Mariner LLC62,504$1.46M0.0%+74.6%0.025%Search for SEC Filing on Google Icon
2/16/2026Nicholas Investment Partners LP641,660$15.03M1.1%+9.6%0.253%Search for SEC Filing on Google Icon
2/16/2026Kennedy Capital Management LLC125,076$2.93M0.1%+0.4%0.049%Search for SEC Filing on Google Icon
2/16/2026Dymon Asia Capital Singapore PTE. LTD.34,774$0.81M0.1%+103.4%0.014%Search for SEC Filing on Google Icon
2/16/2026Barclays PLC374,006$8.76M0.0%-6.8%0.147%Search for SEC Filing on Google Icon
2/16/2026Brown Advisory Inc.1,613,051$37.78M0.1%-40.7%0.636%Search for SEC Filing on Google Icon
2/16/2026Aigen Investment Management LP10,522$0.25M0.1%N/A0.004%Search for SEC Filing on Google Icon
2/13/2026Kestra Advisory Services LLC7,536$0.18M0.0%N/A0.003%Search for SEC Filing on Google Icon
2/13/2026The Manufacturers Life Insurance Company 115,541$2.71M0.0%+3.0%0.046%Search for SEC Filing on Google Icon
2/13/2026Segall Bryant & Hamill LLC1,169,689$27.39M0.4%+4.8%0.461%Search for SEC Filing on Google Icon
2/13/2026Bridgewater Associates LP489,928$11.47M0.0%N/A0.193%Search for SEC Filing on Google Icon
2/13/2026UMB Bank n.a.1,344$31K0.0%+175.4%0.001%Search for SEC Filing on Google Icon
2/13/2026Stifel Financial Corp59,081$1.38M0.0%N/A0.023%Search for SEC Filing on Google Icon
2/13/2026Hudson Bay Capital Management LP40,000$0.94M0.0%N/A0.016%Search for SEC Filing on Google Icon
2/13/2026Smartleaf Asset Management LLC5,542$0.13M0.0%-9.2%0.002%Search for SEC Filing on Google Icon
2/13/2026Bank of Nova Scotia391,006$9.16M0.0%N/A0.154%Search for SEC Filing on Google Icon
2/13/2026Schroder Investment Management Group1,011,014$23.96M0.0%-13.5%0.398%Search for SEC Filing on Google Icon
2/13/2026Public Sector Pension Investment Board857,684$20.09M0.1%-10.3%0.338%Search for SEC Filing on Google Icon
2/13/2026Essex Investment Management Co. LLC303,352$7.11M1.1%-2.3%0.120%Search for SEC Filing on Google Icon
2/13/2026First Trust Advisors LP348,104$8.15M0.0%+29.3%0.137%Search for SEC Filing on Google Icon
2/13/2026Headlands Technologies LLC20,964$0.49M0.0%N/A0.008%Search for SEC Filing on Google Icon
2/13/2026Alyeska Investment Group L.P.1,531,217$35.86M0.1%-51.0%0.603%Search for SEC Filing on Google Icon
2/13/2026Charles Schwab Investment Management Inc.2,344,241$54.90M0.0%+4.9%0.924%Search for SEC Filing on Google Icon
2/13/2026Police & Firemen s Retirement System of New Jersey63,776$1.49M0.0%+6.9%0.025%Search for SEC Filing on Google Icon
2/13/2026Van ECK Associates Corp25,132$0.59M0.0%+139.4%0.010%Search for SEC Filing on Google Icon
2/13/2026State Street Corp9,198,795$215.44M0.0%+4.3%3.624%Search for SEC Filing on Google Icon
2/13/2026Ieq Capital LLC14,522$0.34M0.0%-62.3%0.006%Search for SEC Filing on Google Icon
2/13/2026Vontobel Holding Ltd.20,079$0.47M0.0%-27.4%0.008%Search for SEC Filing on Google Icon
2/13/2026First National Bank of Omaha110,847$2.60M0.1%N/A0.044%Search for SEC Filing on Google Icon
2/13/2026UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC443,832$10.40M0.0%+13.6%0.175%Search for SEC Filing on Google Icon
2/13/2026Wells Fargo & Company MN870,256$20.38M0.0%+151.6%0.343%Search for SEC Filing on Google Icon
2/13/2026Lord Abbett & CO. LLC2,143,558$50.20M0.2%-6.3%0.845%Search for SEC Filing on Google Icon
2/13/2026Keystone Investors PTE Ltd.309,887$7.26M0.7%-64.8%0.122%Search for SEC Filing on Google Icon
2/13/2026Castleark Management LLC348,130$8.15M0.2%N/A0.137%Search for SEC Filing on Google Icon
2/12/2026CI Investments Inc.106,612$2.50M0.0%+10.4%0.042%Search for SEC Filing on Google Icon
2/12/2026HRT Financial LP138,182$3.24M0.0%N/A0.054%Search for SEC Filing on Google Icon
2/12/2026MetLife Investment Management LLC132,017$3.09M0.0%-3.3%0.052%Search for SEC Filing on Google Icon
2/12/2026Cibc World Markets Corp15,870$0.37M0.0%N/A0.006%Search for SEC Filing on Google Icon
2/12/2026Dimensional Fund Advisors LP4,102,558$96.09M0.0%-33.9%1.616%Search for SEC Filing on Google Icon
2/12/2026Federated Hermes Inc.848,570$19.87M0.0%+1,787.3%0.334%Search for SEC Filing on Google Icon
2/12/2026Ensign Peak Advisors Inc649,769$15.22M0.0%+9.3%0.256%Search for SEC Filing on Google Icon
2/12/2026Steward Partners Investment Advisory LLC1,709$40K0.0%+58.5%0.001%Search for SEC Filing on Google Icon
2/12/2026New York State Common Retirement Fund175,675$4.11M0.0%+3.4%0.069%Search for SEC Filing on Google Icon
2/12/2026Loomis Sayles & Co. L P2,845,619$66.64M0.1%+3.0%1.121%Search for SEC Filing on Google Icon
2/12/2026Swiss National Bank464,200$10.87M0.0%+11.7%0.183%Search for SEC Filing on Google Icon
2/12/2026Polen Capital Management LLC79,419$1.86M0.0%+4.3%0.031%Search for SEC Filing on Google Icon
Data available starting January 2016

See Full Table
Mirion Technologies logo
Mirion Technologies, Inc. provides radiation detection, measurement, analysis, and monitoring products and services in the United States, Canada, the United Kingdom, France, Germany, Finland, China, Belgium, Netherlands, Estonia, South Korea, and Japan. It operates through two segments, Medical and Technologies. The Medical segment offers radiation oncology quality assurance and dosimetry solutions; patient safety solutions for diagnostic imaging and radiation therapy centers; radiation therapy quality assurance solutions for calibrating and verifying imaging and treatment accuracy; and radionuclide therapy products for nuclear medicine applications, such as shielding, product handling, medical imaging furniture, and rehabilitation products. This segment supports applications in medical diagnostics, cancer treatment, practitioner safety, and rehabilitation. The Technologies segment focuses on addressing critical radiation safety, measurement, and analysis applications; and provides personal radiation detection, identification equipment, and analysis tools. The company's products and solutions also include nuclear medicines, dosimeters, contamination and clearance monitors, reactor instrumentation and control equipment and systems, medical and industrial imaging systems and related accessories, alpha spectroscopy instruments, alpha/beta counting instruments, and gamma spectroscopy detector systems; and electrical penetration, cancer diagnostics, software, and other services. It serves hospitals, clinics and urgent care facilities, dental and veterinary offices, radiation treatment facilities, OEMs for radiation therapy, laboratories, military organizations, government agencies, industrial companies, power and utility companies, reactor design firms, and NPPs. The company was formerly known as Global Monitoring Systems, Inc. and changed its name to Mirion Technologies, Inc. in January 2006. The company was incorporated in 2005 and is headquartered in Atlanta, Georgia.
Read More on Mirion Technologies

Today's Range

Now: $18.46
Low: $18.19
High: $19.63

50 Day Range

MA: $22.97
Low: $18.46
High: $27.04

52 Week Range

Now: $18.46
Low: $12.00
High: $30.28

Volume

6,523,879 shs

Average Volume

3,652,553 shs

Market Capitalization

$4.62 billion

P/E Ratio

167.79

Dividend Yield

N/A

Beta

0.99

Who are the company insiders with the largest holdings of Mirion Technologies?

Mirion Technologies' top insider investors include:
  1. Lawrence D Kingsley (Director)
  2. Thomas D Logan (CEO)
  3. Thomas D Logan (CEO)
  4. Loic Eloy (Insider)
  5. Emmanuelle Lee (Insider)
  6. Christopher A Moore (CAO)
Learn More about top insider investors at Mirion Technologies.

Who are the major institutional investors of Mirion Technologies?

Mirion Technologies' top institutional investors include:
  1. Vanguard Group Inc. — 11.96%
  2. T. Rowe Price Investment Management Inc. — 5.95%
  3. State Street Corp — 3.62%
  4. Geode Capital Management LLC — 2.28%
  5. Goldman Sachs Group Inc. — 2.07%
  6. UBS Group AG — 1.91%
Learn More about top institutional investors of Mirion Technologies stock.

Which major investors are selling Mirion Technologies stock?

During the previous quarter, MIR stock was sold by these institutional investors:
  1. T. Rowe Price Investment Management Inc.
  2. T. Rowe Price Investment Management Inc.
  3. Janus Henderson Group PLC
  4. Dimensional Fund Advisors LP
  5. Massachusetts Financial Services Co. MA
  6. Alyeska Investment Group L.P.
  7. Brown Advisory Inc.
  8. Summit Partners Public Asset Management LLC
Within the previous year, company insiders that have sold Mirion Technologies company stock include:
  1. Lawrence D Kingsley (Director)
  2. Thomas D Logan (CEO)
Learn More investors selling Mirion Technologies stock.

Which major investors are buying Mirion Technologies stock?

In the previous quarter, MIR stock was bought by institutional investors including:
  1. TCW Group Inc.
  2. Bank of New York Mellon Corp
  3. JPMorgan Chase & Co.
  4. Vaughan Nelson Investment Management L.P.
  5. Artemis Investment Management LLP
  6. Troluce Capital Advisors LLC
  7. Franklin Resources Inc.
  8. Stephens Investment Management Group LLC