Mirion director awarded 7,383 restricted stock units

Markopoulos Jody reported acquisition or exercise transactions in this Form 4 filing.

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

Rhea-AI Filing Summary

Markopoulos Jody reported acquisition or exercise transactions in this Form 4 filing.

Mirion Technologies director Jody Markopoulos received an equity award of 7,383 restricted stock units tied to the company’s Class A Common Stock. These units will vest on the earlier of the first anniversary of the grant date or the next annual stockholder meeting, as long as she continues serving on the Board through that date.

After this grant, Markopoulos directly holds 81,509 shares, reflecting routine, compensation-related stock awards rather than an open-market purchase.

Insider Trade Summary

Grant/Award: 7,383 shares

Grant/Award 1 txn

Insider Markopoulos Jody

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 — 81,509 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

RSUs granted: 7,383 units Shares after transaction: 81,509 shares Transaction price per share: $0.0000 +1 more

4 metrics

RSUs granted 7,383 units Restricted stock units awarded to director on acquisition date

Shares after transaction 81,509 shares Total direct holdings following the RSU grant

Transaction price per share $0.0000 Indicates non-cash grant/award acquisition

Transactions coded as acquisition 1 transaction Single A-code grant/award acquisition reported

Key Terms

restricted stock units, annual stockholder meeting, vesting date, non-employee director

4 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.

annual stockholder meeting financial

"or (ii) date of the annual stockholder meeting following the grant date"

An annual stockholder meeting is a yearly gathering where a company's owners (shareholders) receive updates on performance, vote on key issues like board members, executive pay and major corporate plans, and ask questions of management. Think of it as a company town hall where choices about oversight and direction are decided; outcomes can affect management accountability, corporate strategy and ultimately the value and risks of investors’ shares.

vesting date financial

"continued service on the Board through such vesting date"

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 did Mirion Technologies (MIR) director Jody Markopoulos receive in this Form 4 filing?

Director Jody Markopoulos received an award of 7,383 restricted stock units. These RSUs relate to Mirion’s Class A Common Stock and represent stock-based compensation rather than an open-market share purchase, aligning her interests with shareholders over a future vesting period.

How and when do Jody Markopoulos’s Mirion (MIR) restricted stock units vest?

The 7,383 restricted stock units will vest on the earlier of the first anniversary of the grant date or the next annual stockholder meeting. Vesting is conditioned on her continued service as a non-employee director on Mirion’s Board through the applicable vesting date.

Is the Mirion (MIR) Form 4 transaction a stock purchase or compensation grant?

The Form 4 reports a compensation-related grant, not a market purchase. The transaction is coded as an “A” award, meaning Markopoulos acquired 7,383 restricted stock units at no cash cost as part of her non-employee director equity compensation package.

How many Mirion (MIR) shares does Jody Markopoulos hold after this Form 4 transaction?

Following the grant, Markopoulos directly holds 81,509 shares of Mirion Class A Common Stock. This figure includes her existing holdings plus the newly awarded restricted stock units, giving investors a snapshot of her total reported direct equity position after the transaction.

Does this Mirion (MIR) Form 4 indicate any insider selling activity?

No, the Form 4 shows no insider selling. The filing reflects a single acquisition transaction classified as a grant or award of 7,383 restricted stock units, with zero shares reported as sold or disposed of in connection with this particular insider activity.

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

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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)
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	81,509	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 Jody Markopoulos	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)