SEC Form 4
Mirion Technologies, Inc. (MIR) insider trading
In the 12 months to Oct 26, 2026, 5 MIR insiders reported open-market sales of $20.3M across 6 filings; one chief financial officer bought $312.0K.
Latest filing · Last 12 months · Source: SEC EDGAR · How we count
- Open-market sales
- $20.3M
- 6 filings · 5 insiders
- Open-market purchases
- $312.0K
- 1 filing · Brian Schopfer, Chief Financial Officer
Who traded MIR, and when
- Purchase
- Sale
MIR daily close from Oct 27, 2025 to Oct 26, 2026, between $14.12 and $29.75, last $14.88. 6 sale and 1 purchase filings by 5 insiders, marked at their filing dates. Lawrence D. Kingsley, Director: sold $15.8M across 2 filings, first filed Nov 21, 2025, last Dec 12, 2025. Brian Schopfer, Chief Financial Officer: sold $2.8M and bought $312.0K across 2 filings, first filed Nov 10, 2025, last Sep 2, 2026. Loic Eloy, Nuclear & Safety President: sold $1.2M across 1 filing, first filed Nov 12, 2025, last Nov 12, 2025. Emmanuelle Lee, Chief Legal Officer: sold $342.6K across 1 filing, first filed Nov 12, 2025, last Nov 12, 2025. Christopher A. Moore, Chief Accounting Officer (PAO): sold $165.0K across 1 filing, first filed May 8, 2026, last May 8, 2026.
Largest mark · tap a row for others
Lawrence D. Kingsley · Director
Sale $8,654,800
350,000 shares at $24.73 avg
Filed Dec 12, 2025 · traded Dec 10
Close on filing date $24.67
Lawrence D. Kingsley · Director
Director
$15.8M soldBrian Schopfer · Chief Financial Officer
Chief Financial Officer
$2.8M sold$312.0K boughtLoic Eloy · Nuclear & Safety President
Nuclear & Safety President
$1.2M soldEmmanuelle Lee · Chief Legal Officer
Chief Legal Officer
$342.6K soldChristopher A. Moore · Chief Accounting Officer (PAO)
Chief Accounting Officer (PAO)
$165.0K soldOpen-market trades
7 filings in the last 12 months| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
|---|---|---|---|---|---|---|
| Lawrence D. Kingsley | Director | $15.8M | — | 2 | — | |
| Brian Schopfer | Chief Financial Officer | $2.8M | $312.0K | 2 | — | |
| Loic Eloy | Nuclear & Safety President | $1.2M | — | 1 | — | |
| Emmanuelle Lee | Chief Legal Officer | $342.6K | — | 1 | — | |
| Christopher A. Moore | Chief Accounting Officer (PAO) | $165.0K | — | 1 | — |
| Filed | Insider | Type | Shares | Avg price | Value | Held after | Source |
|---|---|---|---|---|---|---|---|
traded | Brian Schopfer Chief Financial Officer | Purchase | 20,000 | $15.60 | $312.0K | 933,290 | |
traded | Christopher A. Moore Chief Accounting Officer (PAO) | Sale | 8,400 | $19.64 | $165.0K | 22,157 | |
traded | Lawrence D. Kingsley Director | Sale | 350,000 | $24.73 | $8.7M | 3,509,075 | |
traded | Lawrence D. Kingsley Director | Sale | 300,000 | $23.83 | $7.1M | 3,900,000 | |
traded | Emmanuelle Lee Chief Legal Officer | Sale | 12,500 | $27.41 | $342.6K | 84,640 | |
traded | Loic Eloy Nuclear & Safety President | Sale | 45,000 | $27.24 | $1.2M | 97,770 | |
traded | Brian Schopfer Chief Financial Officer | Sale | 100,000 | $27.65 | $2.8M | 904,432 |
GET /stocks/filings/vX/form-4?tickers=MIR&filing_date.gte=2025-10-26&sort=filing_date.desc&limit=500{
"status": "OK",
"results": [
{
"tickers": [
"MIR"
],
"issuer_cik": "0001809987",
"owner_cik": "0001885701",
"accession_number": "0001628280-26-060095",
"form_type": "4",
"filing_date": "2026-09-02",
"period_of_report": "2026-09-02",
"issuer_name": "Mirion Technologies, Inc.",
"issuer_trading_symbol": "MIR",
"owner_name": "Schopfer Brian",
"is_director": false,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "Chief Financial Officer",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Class A Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-09-02",
"transaction_code": "P",
"equity_swap_involved": false,
"transaction_shares": 20000,
"transaction_price_per_share": 15.6,
"transaction_acquired_disposed": "A",
"shares_owned_following_transaction": 933290,
"transaction_value": 312000,
"not_subject_to_section_16": false,
"direct_or_indirect": "D"
},
{
"tickers": [
"MIR"
],
"issuer_cik": "0001809987",
"owner_cik": "0001928030",
"accession_number": "0001628280-26-032863",
"form_type": "4",
"filing_date": "2026-05-08",
"period_of_report": "2026-05-07",
"issuer_name": "Mirion Technologies, Inc.",
"issuer_trading_symbol": "MIR",
"owner_name": "Moore Christopher A.",
"is_director": false,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "Chief Accounting Officer (PAO)",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Class A Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-05-07",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 8400,
"transaction_price_per_share": 19.64,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 22157,
"transaction_value": 164976,
"not_subject_to_section_16": false,
"direct_or_indirect": "D"
}
]
}
// trimmed to 2 resultsThe response includes every Form 4 record; this page keeps open-market purchases and sales on common stock and removes duplicate joint-filer rows.
Other insider activity (not market trades) · 45 records
- Tax withholding16 records
- Grants and awards19 records
- Gifts9 records
- Other1 record
Reported on Form 4 but not purchases or sales in the market, so not counted in the totals above.
How to read this page
- Open-market purchase or sale
- A buy or sell of the company's stock at market price. Grants, option exercises, shares withheld for tax, gifts and employee stock plan purchases are listed separately and not counted.
- Filing date
- Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.
Frequently asked questions
Has Mirion Technologies, Inc.'s CEO sold stock?
No. Thomas D. Logan (CEO) made no open-market sales filed as CEO in the last 12 months.
How current is MIR’s insider data?
These are MIR Form 4 filings from the last year, refreshed daily. The Massive Form 4 API has the full, continuously updated record.
What counts as an open-market buy or sell?
Only purchases and sales at the market price. Option exercises, grants, gifts, and shares withheld for taxes are reported on Form 4 but are left out of the buy and sell totals.
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Track MIR insider trades with your agent
This page joins two Massive endpoints: Form 4 filings and daily prices. Ask an agent to watch for new filings:
Using the Massive API (massive.com/docs/llms.txt), check Form 4 filings for MIR every day with transaction_code=P and tell me when an insider files an open-market purchase, with their role, shares, price and the filing link.
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