Mirion CFO reports planned sales and Class B redemption swap

Rhea-AI Filing Summary

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.

Insights

Securities disclosure analyst

Routine Form 4 showing planned sales and a Class B-for-A redemption.

The filing lists a redemption-driven issuance of 100,000 Class A shares tied to cancelling 100,000 issuer Class B shares, alongside two open-market sales totaling 100,000 Class A shares. All occurred on 11/06/2025 and were executed under a Rule 10b5-1 plan adopted on August 7, 2025.

These actions are administrative and trading mechanics rather than operational events. The filing states post-transaction direct holdings of 904,432 Class A and 399,935 Class B. Actual market impact depends on trading volume and holder decisions.

Subsequent filings may provide additional transaction details if further 10b5-1 trades occur.

Insider Trade Summary

Net Seller: 100,000 shares ($2,765,420)

Net Sell 4 txns

Insider Schopfer Brian

Role Chief Financial Officer

Sold 100,000 shs ($2.77M)

Type	Security	Shares	Price	Value
Grant/Award	Class A Common Stock	100,000	$0.00	--
Disposition	Class B Common Stock	100,000	$0.00	--
Sale	Class A Common Stock	50,000	$27.6524	$1.38M
Sale	Class A Common Stock	50,000	$27.656	$1.38M

Holdings After Transaction: Class A Common Stock — 1,004,432 shares (Direct); Class B Common Stock — 399,935 shares (Direct)

Footnotes (1)

1. The Issuer issued 100,000 shares of Class A common stock of the Issuer to the reporting person pursuant to a redemption of 100,000 shares of Class B common stock of Mirion IntermediateCo, Inc. held by the reporting person effectuated pursuant to a 10b5-1 plan adopted by the reporting person on August 7, 2025. In connection with such redemption the Issuer cancelled 100,000 shares of Class B common stock of the Issuer held by the reporting person. The sales reported on this Form 4 were effectuated pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 7, 2025.

Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Schopfer Brian

(Last) (First) (Middle)

1218 MENLO DRIVE

(Street)

ATLANTA GA 30318

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Mirion Technologies, Inc. [ MIR ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Financial Officer

3. Date of Earliest Transaction (Month/Day/Year)
11/06/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Class A Common Stock	11/06/2025		A		100,000	A	(1)	1,004,432	D
Class B Common Stock	11/06/2025		D		100,000	D	(1)	399,935	D
Class A Common Stock	11/06/2025		S		50,000	D	$27.6524(2)	954,432	D
Class A Common Stock	11/06/2025		S		50,000	D	$27.656(2)	904,432	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. The Issuer issued 100,000 shares of Class A common stock of the Issuer to the reporting person pursuant to a redemption of 100,000 shares of Class B common stock of Mirion IntermediateCo, Inc. held by the reporting person effectuated pursuant to a 10b5-1 plan adopted by the reporting person on August 7, 2025. In connection with such redemption the Issuer cancelled 100,000 shares of Class B common stock of the Issuer held by the reporting person.

2. The sales reported on this Form 4 were effectuated pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 7, 2025.

Remarks:

	/s/ Emmanuelle Lee, attorney-in-fact for Brian Schopfer	11/10/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider transactions did MIR's CFO report?

On 11/06/2025, the CFO reported an issuance of 100,000 Class A shares tied to a redemption and cancellation of 100,000 Class B shares, and sales of 100,000 Class A shares.

At what prices were MIR shares sold in the Form 4?

Two sales of Class A shares were reported at $27.6524 and $27.656.

Were the MIR CFO’s trades under a Rule 10b5-1 plan?

Yes. The issuance/redemption and the sales were effectuated under a Rule 10b5-1 plan adopted on August 7, 2025.

What are the MIR CFO’s direct holdings after the transactions?

Direct holdings were 904,432 shares of Class A common stock and 399,935 shares of Class B common stock.

What structural share change occurred alongside the issuance?

The issuer cancelled 100,000 shares of its Class B common stock in connection with the redemption.

What was the date of the earliest transaction in the Form 4?

The earliest transaction date reported was 11/06/2025.