Beta15% was sold under disclosed trading plans, 85% with no plan disclosed. The largest seller, Lawrence Kingsley (Director), sold $15.8M.Share-of-stake figures for this company are being verified and will be added when that check is finished. Why
A share of stake is shown for 0 of the 5 officers and directors who sold. 13 are left out Disclosed company stock is not an insider's whole wealth.i
Left out: Thomas Logan, Lawrence Kingsley, Brian Schopfer, Emmanuelle Lee, Loic Eloy, Steven Etzel, Kenneth Bockhorst, John Kuo, Jody Markopoulos, Robert Cascella, Sheila Rege, Alison Ulrich and Christopher Moore (share of stake is being verified).
Officers and directors, past 12 months. Their share of stake is being verified and is not shown yet; amounts and trading plans are below.
Officers and directors, Oct 2025 to Oct 2026. Each sale is counted once: under a disclosed plan, else to cover taxes, else no plan disclosed.
No officer or director trades were reported for the past 30 days. The most recent before that:
| Who | Shares | Price | % of total stake | Total stake after | Trade date | Filed |
|---|---|---|---|---|---|---|
| Brian Schopfer Chief Financial Officer | 20,000 | $15.60 | n/a | n/a | Sep 2, 2026 | Sep 2, 2026 |
No. Thomas Logan reported no open-market sales in the past 12 months.
Filings rarely give a reason, and we don't guess at one. What they show is how the sales were made: 15% of sales by value ran under 10b5-1 trading plans disclosed in the filings and 85% had no disclosed plan. A trading plan schedules sales in advance.
Yes. 1 officer or director reported 1 purchase in the past 12 months (Form 4 code P; rows the filings describe as reinvested dividends, plan purchases, private deals or moves into the person's own trust are not counted).
| Who sold | Amount | % of holdings | Trading plan |
|---|---|---|---|
| Lawrence Kingsley Director | $15.8M 650K shares | Not confirmedshare of stake is being verified. Why | No plan disclosed |
| Brian Schopfer Chief Financial Officer | $2.8M 100K shares | Not confirmedshare of stake is being verified. Why | Disclosed plan |
| Loic Eloy Nuclear & Safety President | $1.2M 45K shares | Not confirmedshare of stake is being verified. Why | No plan disclosed |
| Emmanuelle Lee Chief Legal Officer | $343K 13K shares | Not confirmedshare of stake is being verified. Why | Disclosed plan |
| Christopher Moore Chief Accounting Officer (PAO) | $165K 8.4K shares | Not confirmedshare of stake is being verified. Why | No plan disclosed |
Vested shares across all share classes, held directly and through trusts, LLCs and family members, as reported on SEC Forms 3, 4 and 5. Unvested awards and options are never counted as owned shares.
| Insider | Held Oct 16, 2025 | Sold | Held Oct 16, 2026 | Still held |
|---|---|---|---|---|
Thomas Logan!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. See the filing Sales and other transactions for Thomas Logan are complete. Chief Executive Officer, Director | n/a | 0 | n/a | n/a |
Vesting, gifts, unvested awards and holding lines for Thomas LoganHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Thomas Logan are complete; balances and unit counts will be added when the check is finished. −3.51Mgifted (net of own trusts) −210Kwithheld by the company for taxes | ||||
Lawrence Kingsley!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Lawrence Kingsley are complete. Director | n/a | −650K | n/a | n/a |
Vesting, gifts, unvested awards and holding lines for Lawrence KingsleyHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Lawrence Kingsley are complete; balances and unit counts will be added when the check is finished. −41Kgifted (net of own trusts) | ||||
Brian Schopfer!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Brian Schopfer are complete. Chief Financial Officer | n/a | −100K | n/a | n/a |
Vesting, gifts, unvested awards and holding lines for Brian SchopferHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Brian Schopfer are complete; balances and unit counts will be added when the check is finished. −18Kgifted (net of own trusts) −54Kwithheld by the company for taxes | ||||
Emmanuelle Lee!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Emmanuelle Lee are complete. Chief Legal Officer | n/a | −13K | n/a | n/a |
Vesting, gifts, unvested awards and holding lines for Emmanuelle LeeHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Emmanuelle Lee are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) −14Kwithheld by the company for taxes | ||||
Loic Eloy!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Loic Eloy are complete. Nuclear & Safety President | n/a | −45K | n/a | n/a |
Vesting, gifts, unvested awards and holding lines for Loic EloyHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Loic Eloy are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) | ||||
Steven Etzel!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Steven Etzel are complete. Director | n/a | 0 | n/a | n/a |
Vesting, gifts, unvested awards and holding lines for Steven EtzelHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Steven Etzel are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) | ||||
Kenneth Bockhorst!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Kenneth Bockhorst are complete. Director | n/a | 0 | n/a | n/a |
Vesting, gifts, unvested awards and holding lines for Kenneth BockhorstHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Kenneth Bockhorst are complete; balances and unit counts will be added when the check is finished. −9.7Kgifted (net of own trusts) | ||||
John Kuo!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. See the filing Sales and other transactions for John Kuo are complete. Director | n/a | 0 | n/a | n/a |
Vesting, gifts, unvested awards and holding lines for John KuoHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for John Kuo are complete; balances and unit counts will be added when the check is finished. −4.9Kgifted (net of own trusts) | ||||
Jody Markopoulos!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Jody Markopoulos are complete. Director | n/a | 0 | n/a | n/a |
Vesting, gifts, unvested awards and holding lines for Jody MarkopoulosHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Jody Markopoulos are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) | ||||
Robert Cascella!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Robert Cascella are complete. Director | n/a | 0 | n/a | n/a |
Vesting, gifts, unvested awards and holding lines for Robert CascellaHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Robert Cascella are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) | ||||
Sheila Rege!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Sheila Rege are complete. Director | n/a | 0 | n/a | n/a |
Vesting, gifts, unvested awards and holding lines for Sheila RegeHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Sheila Rege are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) | ||||
Alison Ulrich!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Alison Ulrich are complete. Chief Human Resources Officer | n/a | 0 | n/a | n/a |
Vesting, gifts, unvested awards and holding lines for Alison UlrichHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Alison Ulrich are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) −4.5Kwithheld by the company for taxes | ||||
Christopher Moore!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Christopher Moore are complete. Chief Accounting Officer (PAO) | n/a | −8.4K | n/a | n/a |
Vesting, gifts, unvested awards and holding lines for Christopher MooreHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Christopher Moore are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) −3.3Kwithheld by the company for taxes | ||||
Holdings and share of stake for Mirion Technologies, Inc. are being verified, so no balances, unit counts or percentages are shown. Sales, proceeds, plan and tax status, titles and dates come straight from individual filings.
Officer and director open-market sales: $20.3M across 815,900 shares. Plan status and stated purpose are separate questions, and a sale can have both.
The lighter segment is sales with no plan disclosed in the filing ($17.2M), including tax-related sales outside a plan.
Sales with no 10b5-1 plan and no tax reference in the filing. $15.8M of it is Lawrence Kingsley. No plan disclosed is a statement about the filing, not about why the sale happened. Largest such sale: Lawrence Kingsley, Dec 10, 2025
285,483 shares ($6.2M) were withheld by the company for taxes, which isn't a market sale.
1 officer or director bought shares in this period, in 1 trade(Form 4 code P, leaving out rows the filings describe as reinvested dividends, plan purchases, private deals or moves into the person's own trust). Across all their filings on record there is 1 purchase trade.
Gifts the filings describe as charitable. Gifts are not sales and are not included in the sale totals.
| Seller | Shares sold | Proceeds | Under a disclosed plan | Share of total | Sales dates |
|---|---|---|---|---|---|
| Lawrence Kingsley Director | 650K | $15.8M | 0% | 78% | Nov 21, 2025 to Dec 10, 2025 |
| Brian Schopfer Chief Financial Officer | 100K | $2.8M | 100% | 14% | Nov 6, 2025 to Nov 6, 2025 |
| Loic Eloy Nuclear & Safety President | 45K | $1.2M | 0% | 6% | Nov 11, 2025 to Nov 11, 2025 |
| Emmanuelle Lee Chief Legal Officer | 13K | $343K | 100% | 2% | Nov 10, 2025 to Nov 10, 2025 |
| Christopher Moore Chief Accounting Officer (PAO) | 8.4K | $165K | 0% | 0.8% | May 7, 2026 to May 7, 2026 |
| Month | Sale proceeds | Disclosed plan | To cover taxes | No plan disclosed |
|---|---|---|---|---|
| Oct 2025 | $0 | $0 | $0 | $0 |
| Nov 2025 | $11.5M | $3.1M | $0 | $8.4M |
| Dec 2025 | $8.7M | $0 | $0 | $8.7M |
| Jan 2026 | $0 | $0 | $0 | $0 |
| Feb 2026 | $0 | $0 | $0 | $0 |
| Mar 2026 | $0 | $0 | $0 | $0 |
| Apr 2026 | $0 | $0 | $0 | $0 |
| May 2026 | $165K | $0 | $0 | $165K |
| Jun 2026 | $0 | $0 | $0 | $0 |
| Jul 2026 | $0 | $0 | $0 | $0 |
| Aug 2026 | $0 | $0 | $0 | $0 |
| Sep 2026 | $0 | $0 | $0 | $0 |
| Oct 2026 | $0 | $0 | $0 | $0 |
More than usual: about 2.8x the 5-year average. 5 insiders sold; the average is 2 a year.
| 12 months ending | Shares sold | Insiders who sold | Proceeds |
|---|---|---|---|
| Oct 16, 2026 Latest 12 months | 816K | 5 | $20.3M |
| Oct 16, 2025 1 year earlier | 1.23M | 5 | $24.1M |
| Oct 16, 2024 2 years earlier | 184K | 5 | $2.0M |
| Oct 17, 2023 3 years earlier | 43K | 2 | $27K |
| Oct 17, 2022 4 years earlier | 0 | 0 | $0 |
| Oct 17, 2021 5 years earlier | 0 | 0 | $0 |
Open-market sales (Form 4 code S) by people who were officers or directors, in split-adjusted shares. Earlier years include people who have since left. A sale that an outside holder also reports (a family trust, a fund) is counted with outside holders in every year. Shares, not dollars, are compared, so a change in the stock price doesn't look like a change in selling. Years the filings don't fully cover are shown but left out of the average.
Holdings and share of stake are being verified. Balances, unit counts and every share-of-stake figure for Mirion Technologies, Inc. are held back until that check is finished. Sales, proceeds, plan and tax status, titles and dates come straight from individual filings and are complete.
External context: we only cite outside events when a documented connection exists. None is shown for this period.
All 250 Forms 3, 4 and 5 on record for Mirion Technologies, Inc. (SEC CIK 1809987), filed from Jun 29, 2020 to Sep 30, 2026; 41 of them were filed in the 12 months this page covers, retrieved from SEC EDGAR on Oct 16, 2026. Prices are the ones reported in each filing, often weighted averages.
Holdings. Each holding line (a share class plus an owner, such as a trust or LLC) carries its last reported balance forward. Entities first reported during the period start at zero, so transfers between an insider's own trusts don't count as selling. Lines not reported for three years or more are listed separately and left out of totals.
Sales. A sale counts as under a 10b5-1 plan if its footnote cites one or the filing's Rule 10b5-1 box is checked, and as tax-related if its footnote cites tax obligations or sell-to-cover. Shares withheld by the company for taxes are listed separately. Sales with neither attribute are labeled "no plan disclosed".
| Name | Last filed | Last reported balance |
|---|---|---|
| GSAM Holdings LLC | Jun 6, 2024 | 56,668,000 shares, last reported balance as of Jun 4, 2024 |
| Michael Rossi | Nov 3, 2023 | 116,173 shares, last reported balance as of Nov 1, 2023 |
| Jo Natauri | Jun 22, 2023 | No balance on record |
| Jo Natauri | Jun 22, 2023 | 50,000 shares, last reported balance as of Jun 20, 2023 |
| Charterhouse General Partners (IX) Ltd | Mar 8, 2023 | 14,960,702 shares, last reported balance as of Mar 7, 2023 |
| Michael Freed | Oct 22, 2021 | 935,818 shares, last reported balance as of Oct 20, 2021 |
| David Robinson | Aug 14, 2020 | 200,000 shares, last reported balance as of Jul 2, 2020 |
| Martha Sullivan | Aug 14, 2020 | 35,000 shares, last reported balance as of Jul 2, 2020 |
| Steven Reinemund | Aug 14, 2020 | 100,000 shares, last reported balance as of Jul 2, 2020 |
| William Frist | Aug 14, 2020 | 300,000 shares, last reported balance as of Jul 2, 2020 |
| Raanan Agus | Jun 29, 2020 | No balance on record |
| Thomas Knott | Jun 29, 2020 | No balance on record |
| Kipling Matas | No balance on record | |
| Christopher Warren | No balance on record |
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