Mirion Technologies director acquires 1,333 shares

The director elected to receive the quarterly retainer in vested shares rather than cash.

Rhea-AI Filing Summary

Mirion Technologies, Inc. director Jody Markopoulos acquired 1,333 shares of Class A common stock on September 30, 2026; the transaction lists a price of $14.34 per share. The shares were issued in connection with the director’s election to receive the quarterly retainer as vested shares rather than cash. Markopoulos’s direct holdings after the transaction were 82,842 shares.

Insider Trade Summary

Grant/Award: 1,333 shares

Grant/Award 1 txn

Insider Markopoulos Jody

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Class A Common Stock F1	1,333	$14.34	$19K

Holdings After Transaction: Class A Common Stock — 82,842 shares (Direct)

Footnotes (1)

1. F1. 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.

Key Figures

Class A common shares acquired: 1,333 shares Reported transaction price: $14.34 per share Direct holdings after transaction: 82,842 shares

3 metrics

Class A common shares acquired 1,333 shares September 30, 2026

Reported transaction price $14.34 per share September 30, 2026

Direct holdings after transaction 82,842 shares Following the September 30, 2026 transaction

Key Terms

vested shares, quarterly retainer, Class A Common Stock

3 terms

vested shares financial

"in the form of vested shares rather than cash"

quarterly retainer financial

"quarterly retainer for director services"

Class A Common Stock financial

"Class A Common Stock"

Class A common stock is a category of a company’s shares that carries a specific set of ownership rights—most commonly defined voting power and claims on dividends—set out in the company’s charter. For investors it matters because the class determines how much influence you have over corporate decisions, the share’s likely dividend and trading behavior, and how it compares in value to other share classes, like choosing a particular seat with different privileges at the company’s decision-making table.

FAQ

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

How many shares did MIR director Jody Markopoulos acquire?

Jody Markopoulos acquired 1,333 shares of Class A common stock on September 30, 2026. The transaction lists a price of $14.34 per share, and Markopoulos’s direct holdings after the transaction were 82,842 shares.

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

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Available on EDGAR 09/30/2026 - 04:16 PM Accepted by SEC EDGAR 09/30/2026 - 04:15 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^*

Markopoulos Jody

(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)
09/30/2026

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	09/30/2026		A		1,333(1)	A	$14.34	82,842	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. 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 Jody Markopoulos	09/30/2026
	** 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)