Mirion (MIR) director Kingsley granted 7,383 restricted stock units

Rhea-AI Filing Summary

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.

Insider Trade Summary

4 transactions reported

Mixed 4 txns

Insider Kingsley Lawrence D

Role null

Type	Security	Shares	Price	Value
Grant/Award	Class A Common Stock	7,383	$0.00	--
holding	Class A Common Stock	--	--	--
holding	Class A Common Stock	--	--	--
holding	Class A Common Stock	--	--	--

Holdings After Transaction: Class A Common Stock — 71,430 shares (Direct, null); Class A Common Stock — 3,191,075 shares (Indirect, By Lawrence D. Kingsley Revocable Trust)

Footnotes (1)

1. [object Object]

Key Figures

RSU grant size: 7,383 shares Grant price per share: $0.00 per share Direct holdings after grant: 71,430 shares +3 more

6 metrics

RSU grant size 7,383 shares Restricted stock unit grant of Class A Common Stock

Grant price per share $0.00 per share Stated price for restricted stock unit grant

Direct holdings after grant 71,430 shares Class A Common Stock held directly after award

GRAT II indirect holdings 159,000 shares Held by Lawrence D. Kingsley 2026 GRAT II

GRAT I indirect holdings 159,000 shares Held by Lawrence D. Kingsley 2026 GRAT I

Revocable Trust holdings 3,191,075 shares Held by Lawrence D. Kingsley Revocable Trust

Key Terms

restricted stock units, Grant, award, or other acquisition, revocable trust, GRAT

4 terms

restricted stock units financial

"Represents restricted stock units that will vest on the earlier to occur"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

Grant, award, or other acquisition financial

"transaction_code_description": "Grant, award, or other acquisition""

revocable trust financial

"nature_of_ownership": "By Lawrence D. Kingsley Revocable Trust""

A revocable trust is a legal arrangement where the person who creates it keeps control and can change or cancel the trust at any time, while naming who will manage and receive the assets later. Think of it like a flexible folder for your investments and property that can be relabeled or reworked as circumstances change; it matters to investors because it determines how ownership is recorded, how easily assets transfer on incapacity or death, and whether holdings bypass public probate proceedings.

GRAT financial

"nature_of_ownership": "Lawrence D. Kingsley 2026 GRAT II""

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 GEORGIA 30318

(City) (State) (Zip)

UNITED STATES

(Country)

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)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/13/2026

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

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

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

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	05/13/2026		A		7,383(1)	A	$0	71,430	D
Class A Common Stock								3,191,075	I	By Lawrence D. Kingsley Revocable Trust
Class A Common Stock								159,000	I	Lawrence D. Kingsley 2026 GRAT I
Class A Common Stock								159,000	I	Lawrence D. Kingsley 2026 GRAT II

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. Represents restricted stock units that will vest on the earlier to occur of (i) first anniversary of the grant date or (ii) date of the annual stockholder meeting following the grant date, subject to the non-employee director's continued service on the Board through such vesting date.

Remarks:

	/s/ Emmanuelle Lee, attorney-in-fact for Lawrence Kingsley	05/14/2026
	** 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.
* Form 4: SEC 1474 (03-26)

FAQ

What did Mirion Technologies (MIR) director Lawrence D. Kingsley report on this Form 4?

He reported receiving 7,383 shares of Mirion Technologies Class A Common Stock as a restricted stock unit grant. This award is compensation, not an open-market purchase or sale, and increases his directly held shares to 71,430 after the grant.

Is the Lawrence D. Kingsley Mirion (MIR) Form 4 a stock purchase or sale?

The filing reflects a grant of 7,383 restricted stock units at $0.00 per share, classified as a grant, award, or other acquisition. It does not show any open-market buying or selling of Mirion Technologies shares by Kingsley on the reported date.

When do Lawrence D. Kingsley’s new Mirion (MIR) restricted stock units vest?

The restricted stock units vest on the earlier of the first anniversary of the grant date or the date of the next annual stockholder meeting. Vesting is conditioned on Kingsley’s continued service as a non-employee director on the Mirion Technologies Board through that date.

How many Mirion (MIR) shares does Lawrence D. Kingsley hold directly after this grant?

After the 7,383-share restricted stock unit grant, Kingsley directly holds 71,430 shares of Mirion Technologies Class A Common Stock. This figure reflects only his direct ownership and is separate from additional indirect holdings reported through trusts.

What indirect Mirion (MIR) holdings are reported for Lawrence D. Kingsley on this Form 4?

The filing lists 159,000 Mirion shares held by the Lawrence D. Kingsley 2026 GRAT II, 159,000 shares by the 2026 GRAT I, and 3,191,075 shares held by the Lawrence D. Kingsley Revocable Trust. These are all reported as indirect beneficial holdings.

Does the Mirion (MIR) Form 4 mention any derivative securities or option exercises?

No derivative securities or option exercises are reported. The derivative section is empty, and the only transaction coded as a change is the 7,383-share restricted stock unit grant, classified as a non-derivative acquisition of Class A Common Stock.