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Public ownership evidence

Mirion Technologies, Inc. (MIR) Ownership Disclosures

Read MIR insider transactions, institutional 13F filings and Congressional disclosures with report dates, public availability and original receipts.

As of 2026-11-07T14:03:26.246Z

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2026-09-302026-09-30Kingsley Lawrence DA1,333Not reported

First displayed source row from Recent Form 4 activity. The full bounded history and coverage notes remain below.

The displayed observation date is 2026-09-30 and its public availability date is 2026-09-30. Subtracting those calendar dates gives 0 days of disclosure lag. Historical public research can use the record from the availability date, rather than backdating knowledge to the observation date. The calendar-day difference does not assert an intraday publication time.

This row is code A: a award. An award is an acquisition but is not an open-market purchase. A purchase-following rule must not count it as code P.

Open the linked original receipts to verify the row, then inspect a second record before drawing a pattern. This public filing observation supplies source evidence, not a completed copy-trading return.

SEC 0001628280-26-063985 ↗SEC 0001628280-26-063983 ↗SEC 0001628280-26-060095 ↗

Recent Form 4 activity

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2026-09-302026-09-30Kingsley Lawrence DA1,333Not reported
2026-09-302026-09-30Markopoulos JodyA1,333Not reported
2026-09-032026-09-02Schopfer BrianP20,000Not reported

90-day public availability window, up to 50 records.

Recent institutional filing receipts

Inspect all 50 displayed rows: Recent institutional filing receipts

These are raw ticker-matched positions in recent 13F receipts, including amendments. They are not deduplicated current ownership totals. Open the manager profile to inspect its effective filing book.

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Corient Private Wealth LP2026-06-302026-08-2811,931$213,923None
VIRGINIA RETIREMENT SYSTEMS ET Al2026-06-302026-08-2615,400$276,122None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-25267,489$4,796,078None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-254,796,078$267,489,000None
Ensign Peak Advisors, Inc2026-03-312026-08-19631,418$11,738,061None
Ensign Peak Advisors, Inc2025-12-312026-08-19649,769$15,217,590None
Ensign Peak Advisors, Inc2025-09-302026-08-19594,306$13,823,558None
Corient Private Wealth LP2026-06-302026-08-1812,073$216,470None
Empowered Funds, LLC2026-06-302026-08-1826,225$470,214None
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO2026-06-302026-08-18947$16,980None
O'Connor Alternative Investments LLC2026-06-302026-08-1582,400$1,477,432None
SEI INVESTMENTS CO2026-06-302026-08-15833,954$14,952,795None
SEI INVESTMENTS CO2026-06-302026-08-1515,521$278,260None
Murphy & Mullick Capital Management Corp2026-06-302026-08-15250$4,483None
Glen Eagle Advisors, LLC2026-06-302026-08-15162$2,905None
SHELTON CAPITAL MANAGEMENT2026-06-302026-08-1526,806$480,632None
TORNO CAPITAL, LLC2025-09-302026-08-156,410$149,097None
TORNO CAPITAL, LLC2025-09-302026-08-1515,000$348,900Put
T. Rowe Price Investment Management, Inc.2026-06-302026-08-1514,288,075$256,186,000None
Troluce Capital Advisors LLC2026-06-302026-08-151,539,212$27,598,071None
Concentric Capital Strategies, LP2026-06-302026-08-1539,156$702,067None
XTX Topco Ltd2026-06-302026-08-1584,878$1,521,863None
Prestige Wealth Management Group LLC2026-06-302026-08-1534$610None
CHARLES SCHWAB INVESTMENT MANAGEMENT INC2026-06-302026-08-152,447,222$43,878,690None
GROUPAMA ASSET MANAGMENT2026-06-302026-08-1517,222$308,790None
Sixth Street Partners Management Company, L.P.2026-06-302026-08-152,447,222$43,878,690None
ExodusPoint Capital Management, LP2026-06-302026-08-15605,134$10,850,053None
Blueshift Asset Management, LLC2026-06-302026-08-1510,522$188,659None
Neo Ivy Capital Management2026-06-302026-08-15139,867$2,507,815None
Caption Management, LLC2026-06-302026-08-151,357,800$24,345,354Call
Caption Management, LLC2026-06-302026-08-1540,000$717,200None
OSAIC HOLDINGS, INC.2026-06-302026-08-15665,426$11,931,088None
OSAIC HOLDINGS, INC.2026-06-302026-08-15524$9,395None
OSAIC HOLDINGS, INC.2026-06-302026-08-154,539$81,382None
Squarepoint Ops LLC2026-06-302026-08-1593,000$1,667,490Call
MetLife Investment Management, LLC2026-06-302026-08-15141,335$2,534,137None
JANE STREET GROUP, LLC2026-06-302026-08-1554,500$977,185Put
JANE STREET GROUP, LLC2026-06-302026-08-15547,700$9,820,261Call
Davidson Kempner Capital Management LP2026-06-302026-08-151,619,998$29,046,564None
Select Equity Group, L.P.2026-06-302026-08-151,576,023$28,258,092None
State of Tennessee, Department of Treasury2026-06-302026-08-1569,793$1,251,389None
Orion Porfolio Solutions, LLC2026-06-302026-08-1515,892$284,944None
BOOTHBAY FUND MANAGEMENT, LLC2026-06-302026-08-1520,200$362,186Call
BOOTHBAY FUND MANAGEMENT, LLC2026-06-302026-08-15188,515$3,380,074None
Legal & General Group Plc2026-06-302026-08-15122,018$2,187,782None
Legal & General Group Plc2026-06-302026-08-1546,400$831,952None
Legal & General Group Plc2026-06-302026-08-15374,417$6,713,297None
HRT FINANCIAL LP2026-06-302026-08-15339,916$6,094,000None
Ensign Peak Advisors, Inc2026-06-302026-08-15116,040$2,080,597None
SUSQUEHANNA INTERNATIONAL GROUP, LLP2026-06-302026-08-151,541,500$27,639,095Call

90-day public filing window, up to 50 source positions.

Corient Private Wealth LP ↗VIRGINIA RETIREMENT SYSTEMS ET Al ↗CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM ↗CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM ↗Ensign Peak Advisors, Inc ↗Ensign Peak Advisors, Inc ↗Ensign Peak Advisors, Inc ↗Corient Private Wealth LP ↗Empowered Funds, LLC ↗PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO ↗

Recent Congressional disclosures

No matching Congressional transactions were returned in this source preview.

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Bounded public source preview, up to 25 disclosed events.

How to read the disclosure dates

The tables report different things: insider transactions, institutional positions and Congressional transaction ranges. Read each table with its source dates and units. They cannot be added into a combined ownership percentage.

  1. Company insiders

    SEC Form 4 purchases, sales and awards report transactions and their public filing availability.

  2. Institutional managers

    13F reports disclose delayed quarter-end positions. They are not a record of trades between quarters.

  3. Congressional filers

    Periodic transaction reports disclose transaction dates and amount brackets. Public filing dates determine what researchers could know.

Institutional source directory ↗Congressional source directory ↗

Read the transaction codes

Awards use transaction code A, purchases P and sales S. An acquisition from an award is not the same as an open-market purchase. Joint filers may share a transaction. Use original receipts and availability dates to interpret the events.