Every Form 4 that Mirion Technologies, Inc. (MIR) has filed with the SEC in the last 12 months is listed below, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
A Form 4 covers the transactions officers, directors and large holders report, so if you follow MIR and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full MIR filings page.
Mirion Technologies, Inc. (MIR) reports that Chief Financial Officer Brian Schopfer purchased 20,000 shares of Class A Common Stock on September 2, 2026 in an open-market or private transaction at $15.60 per share. Following this purchase, he directly holds 933,290 Class A shares and 399,935 Class B shares.
Kingsley Lawrence D reported acquisition or exercise transactions in this Form 4 filing.
Mirion Technologies director Lawrence D. Kingsley reported a stock grant of 1,095 shares of Class A Common Stock, valued at $17.46 per share. The shares were issued as his quarterly director retainer, which he elected to receive in vested stock instead of cash. Following this grant, he directly holds 72,525 shares. He also reports indirect holdings of 3,191,075 shares through the Lawrence D. Kingsley Revocable Trust and 159,000 shares each through the Lawrence D. Kingsley 2026 GRAT I and 2026 GRAT II.
Kingsley Lawrence D reported acquisition or exercise transactions in this Form 4 filing.
Mirion Technologies director Lawrence D. Kingsley received a stock-based compensation grant. He was awarded 7,383 shares of Class A Common Stock as a restricted stock unit grant at a stated price of $0.00 per share, increasing his direct holdings to 71,430 shares. The units vest on the earlier of the first anniversary of the grant date or the next annual stockholder meeting, subject to his continued Board service.
Bockhorst Kenneth reported acquisition or exercise transactions in this Form 4 filing.
Mirion Technologies director Kenneth Bockhorst received an equity award in the form of restricted stock units. On the reported date, he was granted 7,383 shares of Class A common stock as a stock award at no cash cost, increasing his direct holdings to 77,258 shares.
The footnote explains these restricted stock units vest on the earlier of the first anniversary of the grant date or the company’s next annual stockholder meeting, if he continues serving as a non-employee director through that date. This reflects routine board compensation rather than an open-market purchase.
CASCELLA ROBERT reported acquisition or exercise transactions in this Form 4 filing.
Mirion Technologies director Robert Cascella received an equity award in the form of restricted stock units. The grant covers 7,383 shares of Class A Common Stock at no cash cost, increasing his direct holdings to 60,801 shares after the transaction.
The restricted stock units will vest on the earlier of the first anniversary of the grant date or the date of the next annual stockholder meeting, as long as Cascella continues to serve as a non-employee director on the Board through that vesting date. This is a routine, compensation-related equity grant rather than an open-market share purchase.
Mirion Technologies director Steven W. Etzel reported an equity grant of 7,383 shares of Class A Common Stock in the form of restricted stock units. The award carries no cash exercise price.
These restricted stock units vest on the earlier of the first anniversary of the grant date or the date of the next annual stockholder meeting, conditioned on his continued service as a non-employee director. After this grant, Etzel directly holds 87,448 shares of Mirion Class A Common Stock, so the award modestly increases his existing ownership stake.
KUO JOHN W reported acquisition or exercise transactions in this Form 4 filing.
Mirion Technologies director John W. Kuo received an equity award of 7,383 shares of Class A common stock in the form of restricted stock units. These units vest on the earlier of the first anniversary of the grant date or the next annual stockholder meeting, as long as he continues serving on the board. After this grant, he directly holds 80,119 shares. This is a routine, compensation-related award rather than an open-market purchase.
Markopoulos Jody reported acquisition or exercise transactions in this Form 4 filing.
Mirion Technologies director Jody Markopoulos received an equity award of 7,383 restricted stock units tied to the company’s Class A Common Stock. These units will vest on the earlier of the first anniversary of the grant date or the next annual stockholder meeting, as long as she continues serving on the Board through that date.
After this grant, Markopoulos directly holds 81,509 shares, reflecting routine, compensation-related stock awards rather than an open-market purchase.
Rege Sheila reported acquisition or exercise transactions in this Form 4 filing.
Mirion Technologies, Inc. director Sheila Rege reported receiving an equity award of 7,383 shares of Class A Common Stock in the form of restricted stock units. These units were granted at no cash cost per share and bring her direct holdings to 49,877 shares after the award.
The footnote explains that the restricted stock units will vest on the earlier of the first anniversary of the grant date or the date of the next annual stockholder meeting, as long as she continues to serve as a non-employee director on the Board through the vesting date. This reflects compensation-related stock granted for Board service rather than an open-market purchase.
Mirion Technologies, Inc. Chief Accounting Officer Christopher A. Moore reported an open-market sale of company stock. On May 7, 2026, he sold 8,400 shares of Mirion Class A Common Stock at an average price of $19.64 per share.
After this transaction, Moore directly holds 22,157 shares of Mirion stock. This filing records a single sale transaction and does not show any accompanying option exercises, gifts, or tax-withholding events.
Mirion Technologies Chief Executive Officer Thomas D. Logan reported a bona fide gift of Class A shares. On May 6, 2026, he gifted 311,851 shares of Class A Common Stock to the Logan Family Trust and received no consideration for this transfer.
Following the gift, he directly holds 52,209 shares of Class A Common Stock and 1,544,017 shares of Class B Common Stock. The Logan Family Trust now holds 3,517,229 shares of Class A Common Stock, reported as indirect ownership.
Mirion Technologies Chief Human Resources Officer Alison Ulrich had 2,053 shares of Class A common stock withheld on April 1, 2026 to cover tax obligations from vesting restricted stock units. The shares were valued at $18.59 each. After this non-discretionary tax-withholding transaction, she directly holds 36,235 shares of Mirion common stock.
Mirion Technologies, Inc. Chief Financial Officer Brian Schopfer reported a routine tax-related share withholding. On April 1, 2026, 7,377 shares of Class A Common Stock were withheld at $18.59 per share to satisfy tax obligations tied to vesting restricted stock units.
The company’s policy mandated this withholding, and it was not a discretionary trade by Schopfer. After this transaction, he directly holds 913,290 Class A shares and 399,935 Class B shares, indicating the disposition was small relative to his overall stake.
Mirion Technologies, Inc. Chief Accounting Officer Christopher A. Moore reported a routine share disposition tied to equity compensation. On April 1, 2026, 1,903 shares of Class A common stock were withheld at $18.59 per share to satisfy tax withholding obligations from vesting restricted stock units.
The company’s policy required this withholding, so it was not a discretionary market trade. After this tax-related disposition, Moore directly held 30,557 shares of Mirion Technologies Class A common stock.
Mirion Technologies, Inc. Chief Executive Officer Thomas D. Logan reported a tax-related share withholding tied to vesting equity awards. On the vesting of previously granted restricted stock units, 22,614 shares of Class A Common Stock were withheld at $18.59 per share to satisfy tax withholding obligations under a pre-adopted company policy. This withholding is described as mandated by the issuer and not a discretionary trade by Logan.
After this event, Logan holds 364,060 shares of Class A Common Stock directly, 1,544,017 shares of Class B Common Stock directly, and 3,205,378 shares of Class A Common Stock indirectly through the Logan Family Trust.
Mirion Technologies Chief Legal Officer Emmanuelle Lee reported a mandatory tax-related share withholding tied to equity compensation. On Class A Common Stock, 4,680 shares were withheld at $18.59 per share to satisfy tax obligations from vesting restricted stock units under a pre-adopted company policy, rather than an open-market sale. After this event, Lee directly owned 82,431 Class A shares. The filing also shows holdings of Class B Common Stock, including 138,193 shares held directly and 32,748 shares held indirectly through a trust.
Kingsley Lawrence D reported acquisition or exercise transactions in this Form 4 filing.
Mirion Technologies director Lawrence D. Kingsley received a stock grant of 1,104 Class A Common shares, taken in lieu of cash fees for board service. The shares were issued at a reference price of $17.32 per share as a vested award for his quarterly director retainer.
After this grant, Kingsley directly holds 64,047 Mirion Class A shares. He also has an additional 3,509,075 shares reported as indirectly owned through the Lawrence D. Kingsley Revocable Trust. This filing reflects routine, compensation-related share issuance rather than an open-market purchase.
Mirion Technologies, Inc. reported that Nuclear & Safety President Loic Eloy acquired 15,577 shares of Class A common stock at no cost through the settlement of previously granted performance-based restricted stock units. After this award, his directly held stake increased to 113,347 shares.
Mirion Technologies, Inc. Chief Financial Officer Brian Schopfer reported equity compensation activity involving Class A Common Stock. He acquired 64,906 Class A shares at no cost through a grant or award, tied to the settlement of previously granted performance-based restricted stock units based on achieved performance goals.
The company withheld 28,499 Class A shares at a price of $21.61 per share and another 9,172 Class A shares at $21.61 per share to satisfy tax withholding obligations related to vesting RSUs and PSUs. These tax-withholding dispositions were mandated by company policy and are not discretionary trades. Following these transactions, he directly held 884,260 Class A shares, and a separate entry shows 399,935 Class B shares held directly.
Mirion Technologies, Inc. Chief Human Resources Officer Alison Ulrich reported equity compensation and related tax withholding transactions in Class A common stock. She received a grant of 5,552 restricted stock units on March 1, 2026, described as an award with no cash price.
According to the footnotes, these units will vest in three equal annual installments starting on March 1, 2027, if her employment continues through each vesting date. On the same date, 2,360 shares at $21.61 per share were withheld by Mirion to cover tax obligations upon vesting of previously granted RSUs, under a pre-adopted policy and not as a discretionary trade. After these transactions, she directly owned 38,288 shares of Class A common stock.
Mirion Technologies, Inc. Chief Accounting Officer Christopher A. Moore reported two stock transactions involving Class A common stock. He received a grant of 5,552 restricted stock units that will vest in three equal annual installments starting on March 1, 2027, contingent on continued employment. Separately, 1,397 shares were disposed of at $21.61 per share to satisfy tax withholding obligations upon vesting of previously granted RSUs, with the shares withheld under a pre-established company policy rather than through a discretionary trade. After these transactions, Moore directly held 32,460 shares.
Mirion Technologies Chief Legal Officer Emmanuelle Lee reported equity transactions involving Mirion Class A and Class B shares. On March 1, 2026, she received a grant of 11,568 shares of Class A Common Stock at $0 per share, described in a footnote as restricted stock units that vest in three equal annual installments starting on March 1, 2027, subject to continued employment.
On the same date, 3,184 Class A shares were disposed of at $21.61 per share to satisfy tax withholding obligations on previously granted RSUs under a pre‑adopted company policy, characterized as a non‑discretionary tax-withholding disposition. Following these transactions, Lee directly owned 87,111 Class A shares and 138,193 Class B shares. An additional 32,748 Class B shares are held by the Lee Revocable Living Trust for the benefit of Lee, her spouse, and other beneficiaries, with Lee disclaiming ownership beyond her pecuniary interest.
Mirion Technologies, Inc. Chief Executive Officer Thomas D. Logan reported multiple equity transactions in Class A Common Stock. He received a grant or award of 318,632 shares at $0.00 per share, tied to the settlement of previously granted performance-based restricted stock units.
To satisfy tax withholding obligations on vesting RSUs and PSUs under a pre-adopted company policy, the issuer withheld 127,184 shares and 20,650 shares at $21.61 per share; these withholdings are not discretionary trades by Logan. He also made a bona fide gift of 3,093,812 shares to the Logan Family Trust for no consideration.
Following these transactions, Logan directly owns 386,674 shares of Class A Common Stock and holds additional shares indirectly through the Logan Family Trust, which is reported with 3,205,378 shares of indirect ownership.
Mirion Technologies, Inc. reported an insider stock transaction by one of its directors. On 12/31/2025, the director received 806 shares of Class A common stock, coded as an acquisition. The shares were issued as payment for the director’s quarterly retainer, which the director elected to take in vested stock rather than cash.
After this issuance, the director beneficially owns 62,943 Class A shares directly and an additional 3,509,075 shares indirectly through the Lawrence D. Kingsley Revocable Trust. This filing records the updated ownership levels and the use of stock instead of cash for board compensation.
Mirion Technologies, Inc. CEO and director Thomas D. Logan reported an automatic share withholding related to equity compensation. On 12/27/2025, 39,863 shares of Class A common stock were withheld by the company at a price of $23.76 per share to satisfy tax obligations arising from the vesting of previously granted restricted stock units. After this tax withholding event, Logan directly beneficially owned 3,309,688 shares of Class A common stock and 1,544,017 shares of Class B common stock, and indirectly owned 111,566 shares of Class A common stock through the Logan Family Trust. The filing notes that the withholding followed a pre-adopted company policy and did not represent a discretionary trade by Logan.
Mirion Technologies, Inc. Chief Financial Officer Brian Schopfer reported an automatic share withholding tied to equity compensation. On 12/27/2025, 8,500 shares of Class A common stock were withheld by the company to cover tax obligations arising from the vesting of previously granted restricted stock units. The filing notes this withholding was mandated under a pre-adopted company policy and did not involve a discretionary trade by the executive.
Following this transaction, Schopfer beneficially owned 893,432 shares of Class A common stock and 399,935 shares of Class B common stock, all held directly.
Mirion Technologies, Inc. reported an insider equity transaction by its Chief Legal Officer, Emmanuelle Lee. On 12/27/2025, 5,913 shares of Class A common stock were withheld at a price of $23.76 per share to cover tax obligations arising from the vesting of previously granted restricted stock units. This withholding was mandated by company policy and is not a discretionary trade. Following this transaction, Lee beneficially owned 78,727 shares of Class A common stock directly and 138,193 shares of Class B common stock directly. An additional 32,748 shares of Class B common stock are held indirectly through the Lee Revocable Living Trust for the benefit of Lee, Lee’s spouse, and other beneficiaries, with Lee disclaiming ownership beyond her pecuniary interest.
Mirion Technologies, Inc. Chief Human Resources Officer Alison Ulrich reported an automatic share withholding related to equity compensation. On 12/27/2025, the company withheld 134 shares of Class A common stock at a price of $23.76 per share to cover tax obligations arising from the vesting of previously granted restricted stock units. After this tax withholding, Ulrich beneficially owned 35,096 shares directly. The filing notes that the withholding was mandated by a pre-adopted company policy and did not represent a discretionary trade by the executive.
Mirion Technologies, Inc. director Kenneth Bockhorst reported a change in his holdings of Class A common stock. On December 8, 2025, he made a gift of 9,680 shares of Class A common stock to a donor advised fund and received no consideration for the transfer. Following this transaction, he directly beneficially owns 69,875 shares of Mirion Class A common stock. The filing is reported on a Form 4 as a transaction by a single reporting person serving as a director of the company.
Mirion Technologies director reports charitable stock gift. A Mirion Technologies, Inc. (MIR) director reported making a gift of 4,860 shares of Class A Common Stock on December 11, 2025. The filing states the shares were donated to a donor advised fund and that the director received no consideration for the transfer.
After this transaction, the director reports beneficial ownership of 72,736 shares of Class A Common Stock and 29,390 shares of Common Stock, all held directly. This is a personal ownership change and does not involve the company issuing new shares or receiving cash.
Mirion Technologies director reports significant share sale
Mirion Technologies, Inc. director Lawrence D. Kingsley reported selling 350,000 shares of the company’s Class A common stock on 12/10/2025. The transaction was coded as a sale at a price of $24.728 per share and was executed through the Lawrence D. Kingsley Revocable Trust.
Following this transaction, the trust beneficially owns 3,509,075 shares of Mirion Technologies indirectly, while an additional 62,137 shares are listed as directly owned. The filing is made on Form 4 by a single reporting person in his capacity as a director of the company.
Mirion Technologies, Inc. (MIR) filed a Form 4 disclosing that its Chief Financial Officer, Brian Schopfer, made charitable gifts of company stock. On December 5, 2025 and December 8, 2025, he gifted a total of 2,500 shares of Class A Common Stock to a university and received no payment for these shares. After these transactions, he beneficially owned 901,932 shares of Class A Common Stock and 399,935 shares of Class B Common Stock, all held directly.
Mirion Technologies, Inc. (MIR) director Lawrence Kingsley reported an equity transfer on Form 4. On November 24, 2025, a revocable trust associated with him made a gift of 40,925 shares of Class A Common Stock to a donor advised fund, and he received no payment for this transfer. Following the gift, the trust indirectly held 3,859,075 Class A shares, and Kingsley directly held 62,137 Class A shares.
Mirion Technologies, Inc. director reports stock sale. A reporting person serving as a director of Mirion Technologies, Inc. (MIR) reported selling 300,000 shares of Class A common stock on 11/21/2025. The transaction was coded "S" as a sale, at a reported price of $23.828 per share.
After this transaction, the reporting person beneficially owned 3,900,000 shares of Class A common stock indirectly through the Lawrence D. Kingsley Revocable Trust, and 62,137 shares directly. The filing is made on Form 4 for one reporting person and shows no derivative securities activity.
Mirion Technologies (MIR) reported an insider transaction on a Form 4. On 11/11/2025, the company’s Nuclear & Safety President, Loic Eloy, sold 45,000 shares of Class A common stock at an average price of $27.2374.
Following the sale, Eloy beneficially owns 97,770 shares, held directly.
Mirion Technologies (MIR) Chief Legal Officer Emmanuelle Lee reported an open-market sale of 12,500 shares of Class A common stock at $27.4114 on 11/10/2025, executed under a Rule 10b5-1 trading plan adopted on August 11, 2025.
Following the transaction, she beneficially owns 84,640 Class A shares directly. She also holds 138,193 Class B shares directly and 32,748 Class B shares indirectly via the Lee Revocable Living Trust, where she and her spouse serve as trustees and beneficiaries.
Mirion Technologies (MIR) disclosed insider activity by its Chief Financial Officer on 11/06/2025. The company issued 100,000 shares of Class A common stock to the officer in connection with a redemption of 100,000 shares of Class B common stock of Mirion IntermediateCo., and the issuer cancelled 100,000 shares of its Class B common stock. The officer then sold 100,000 Class A shares in two trades at $27.6524 and $27.656 under a Rule 10b5-1 plan adopted on August 7, 2025. After these transactions, direct holdings were 904,432 Class A shares and 399,935 Class B shares.
Mirion Technologies (MIR): CEO and director Thomas D. Logan reported a charitable gift of 106,188 shares of Class A Common Stock on 10/30/2025 (transaction code G) at a reported price of $0.
Following the transaction, reported holdings were 3,349,551 shares of Class A Common Stock directly, 1,544,017 shares of Class B Common Stock directly, and 111,566 shares of Class A Common Stock held indirectly via the Logan Family Trust.
Mirion Technologies (MIR) Form 4: Chief Financial Officer Brian Schopfer reported a charitable gift of 15,000 shares of Class A Common Stock on 10/30/2025, coded “G,” with a price of $0. Following the transaction, he beneficially owned 904,432 shares of Class A Common Stock (direct) and 499,935 shares of Class B Common Stock (direct). The filing notes the gift was to a donor advised fund and that no consideration was received.