MIR insider Kingsley donates 40,925 Mirion Class A shares

Rhea-AI Filing Summary

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.

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

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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)
11/24/2025

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	11/24/2025		G		40,925(1)	D	$0	3,859,075	I	By Lawrence D. Kingsley Revocable Trust
Class A Common Stock								62,137	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. On November 24, 2025, the Reporting Person made a gift of 40,925 shares of Class A Common Stock to a donor advised fund. The Reporting Person received no consideration for the gift.

Remarks:

	/s/ Emmanuelle Lee, attorney-in-fact for Lawrence Kingsley	11/25/2025
	** 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 transaction did MIR director Lawrence Kingsley report?

Lawrence Kingsley reported that a revocable trust associated with him made a gift of 40,925 shares of Mirion Technologies Class A Common Stock on November 24, 2025 to a donor advised fund.

Did the MIR insider receive any payment for the 40,925-share transfer?

No. The filing states that the reporting person received no consideration for the gift of 40,925 Class A Common shares to the donor advised fund.

How many Mirion Technologies (MIR) shares does the reporting person hold after the gift?

After the reported gift, the revocable trust indirectly held 3,859,075 shares of Mirion Technologies Class A Common Stock, and the reporting person directly held 62,137 shares.

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.

Was the Mirion Technologies (MIR) insider transaction part of a Rule 10b5-1 plan?

The form includes a checkbox related to transactions under a Rule 10b5-1(c) trading plan, but the provided excerpt does not indicate that this particular gift was made under such a plan.

How is the indirect ownership of MIR shares held by the reporting person structured?

The indirect holdings of 3,859,075 Class A shares are reported as being held by the Lawrence D. Kingsley Revocable Trust.