Mirion director granted 7,383 stock units

KUO JOHN W reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

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.

Insider Trade Summary

Grant/Award: 7,383 shares

Grant/Award 1 txn

Insider KUO JOHN W

Role Director

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

Holdings After Transaction: Class A Common Stock — 80,119 shares (Direct)

Footnotes (1)

1. F1. 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.

Key Figures

Equity award size: 7,383 shares Price per unit: $0.00 per share Post-transaction holdings: 80,119 shares +1 more

4 metrics

Equity award size 7,383 shares Restricted stock units granted to director John W. Kuo

Price per unit $0.00 per share Grant price for restricted stock units

Post-transaction holdings 80,119 shares Class A common stock held directly after grant

Transaction date May 13, 2026 Date of restricted stock unit grant

Key Terms

restricted stock units, vesting, non-employee director

3 terms

restricted stock units financial

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

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.

vesting financial

"will vest on the earlier to occur of (i) first anniversary of the grant date"

Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.

non-employee director financial

"subject to the non-employee director's continued service on the Board"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did Mirion Technologies (MIR) report for John W. Kuo?

Mirion Technologies reported that director John W. Kuo received 7,383 restricted stock units of Class A common stock as a compensation-related equity award, not an open-market purchase. This increases his directly held shares to 80,119 after the transaction.

How many Mirion Technologies (MIR) shares does John W. Kuo hold after this grant?

Following the equity award, John W. Kuo directly holds 80,119 shares of Mirion Technologies Class A common stock. The increase comes from a grant of 7,383 restricted stock units provided as director compensation rather than from buying shares in the open market.

What are the vesting terms of John W. Kuo’s Mirion (MIR) restricted stock units?

The 7,383 restricted stock units granted to John W. Kuo vest on the earlier of the first anniversary of the grant date or the date of the next annual stockholder meeting, provided he continues serving as a non-employee director on Mirion Technologies’ board through the vesting date.

Was John W. Kuo’s Mirion (MIR) stock award an open-market purchase?

No, the Form 4 shows John W. Kuo’s transaction as a grant or award acquisition of 7,383 restricted stock units at a price of $0.00 per share. This indicates director compensation, not an open-market stock purchase or sale by the insider.

What type of security did John W. Kuo receive from Mirion Technologies (MIR)?

John W. Kuo received restricted stock units tied to Mirion Technologies’ Class A common stock. These RSUs convert into shares as they vest under the disclosed schedule, aligning board compensation with shareholder interests without requiring him to pay a purchase price for the award.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 05/14/2026 - 04:07 PM Learn about SEC filing dates

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^*

KUO JOHN W

(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	80,119	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. 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 John Kuo	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)