Mirion Technologies (MIR) director adds 806 shares via stock retainer

Rhea-AI Filing Summary

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.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider Kingsley Lawrence D

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Class A Common Stock	806	$23.70	$19K
holding	Class A Common Stock	--	--	--

Holdings After Transaction: Class A Common Stock — 62,943 shares (Direct); Class A Common Stock — 3,509,075 shares (Indirect, By Lawrence D. Kingsley Revocable Trust)

Footnotes (1)

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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^*

Kingsley Lawrence D

(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)

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

3. Date of Earliest Transaction (Month/Day/Year)
12/31/2025

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	12/31/2025		A		806(1)	A	$23.7	62,943	D
Class A Common Stock								3,509,075	I	By Lawrence D. Kingsley Revocable Trust

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. These shares were issued in connection with the Reporting Person's election to receive his or her quarterly retainer for director services in the form of vested shares rather than cash.

Remarks:

	/s/ Emmanuelle Lee, attorney-in-fact for Lawrence Kingsley	01/05/2026
	** 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 transaction was reported for MIR in this Form 4?

A Mirion Technologies director received 806 shares of Class A common stock on 12/31/2025, reported as an acquisition under the Form 4.

Why did the Mirion Technologies (MIR) director receive 806 shares?

The 806 shares were issued in connection with the director's election to receive a quarterly retainer for director services in the form of vested shares rather than cash.

What price was used for the Mirion Technologies director share issuance?

The 806 Class A common shares were reported at a price of $23.7 per share in the Form 4 table.

How many Mirion Technologies shares does the director own after this transaction?

Following the transaction, the director beneficially owns 62,943 Class A shares directly and 3,509,075 shares indirectly through the Lawrence D. Kingsley Revocable Trust.

Is this Mirion Technologies Form 4 filed for one reporting person or a group?

The Form 4 is indicated as being filed by one reporting person, as shown by the checked box in the filing.

What is the relationship of the reporting person to Mirion Technologies (MIR)?

The reporting person is identified as a Director of Mirion Technologies, Inc. on the Form 4.