Mirion (MIR) director Sheila Rege receives 7,383 restricted stock units

Rhea-AI Filing Summary

Rege Sheila reported acquisition or exercise transactions in this Form 4 filing.

Mirion Technologies, Inc. director Sheila Rege reported receiving an equity award of 7,383 shares of Class A Common Stock in the form of restricted stock units. These units were granted at no cash cost per share and bring her direct holdings to 49,877 shares after the award.

The footnote explains that the restricted stock units will vest on the earlier of the first anniversary of the grant date or the date of the next annual stockholder meeting, as long as she continues to serve as a non-employee director on the Board through the vesting date. This reflects compensation-related stock granted for Board service rather than an open-market purchase.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Rege Sheila

Role null

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

Holdings After Transaction: Class A Common Stock — 49,877 shares (Direct, null)

Footnotes (1)

1. [object Object]

Key Figures

RSU grant: 7,383 shares Holdings after transaction: 49,877 shares Grant price: $0.00 per share +2 more

5 metrics

RSU grant 7,383 shares Restricted stock units of Class A Common Stock granted to director

Holdings after transaction 49,877 shares Total direct Class A Common Stock held after award

Grant price $0.00 per share Stated transaction price per share for RSU grant

Transaction code A Grant, award, or other acquisition of non-derivative security

Transaction date 2026-05-13 Date of RSU grant to non-employee director

Key Terms

restricted stock units, non-employee director, annual stockholder meeting, grant date, +1 more

5 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.

non-employee director financial

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

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.

grant date financial

"first anniversary of the grant date or (ii) date of the annual"

The grant date is the day a company formally gives an employee or contractor the right to receive stock-based compensation, such as stock options or restricted shares. It matters to investors because it fixes key terms—like the price, the start of the ownership clock, and when the award will affect the company’s financial statements and share count—so it can influence dilution, reported expenses, and potential future selling pressure.

Class A Common Stock financial

"security_title": "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.

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^*

Rege Sheila

(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	49,877	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 Sheila Rege	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 Sheila Rege report in this Form 4?

Sheila Rege reported receiving 7,383 restricted stock units of Mirion Class A Common Stock. The award was granted at no cash cost per share and is a compensation-related grant for her Board service, increasing her direct holdings to 49,877 shares after the transaction.

How many Mirion Technologies (MIR) shares does Sheila Rege hold after this grant?

After the equity award, Sheila Rege directly holds 49,877 Mirion Class A Common shares. This total includes the 7,383 restricted stock units granted in the reported transaction, which were awarded as part of her compensation for serving as a non-employee director on the Board.

What type of transaction is reported for Mirion Technologies (MIR) director Sheila Rege?

The filing reports an acquisition via a grant or award of restricted stock units. The transaction is coded as an "A" event, described as a grant, award, or other acquisition, and is compensation-related rather than an open-market buy or sell of Mirion Class A Common Stock.

When do Sheila Rege’s Mirion (MIR) restricted stock units vest?

The restricted stock units vest on the earlier of two dates. They vest either on the first anniversary of the grant date or on the date of the annual stockholder meeting following the grant date, provided she continues serving as a non-employee director through that vesting date.

Is Sheila Rege’s Mirion (MIR) Form 4 transaction an open-market purchase or sale?

No, the reported transaction is not an open-market purchase or sale. It is a grant of 7,383 restricted stock units at a stated price of $0.00 per share, representing stock-based compensation for her role as a non-employee director on Mirion’s Board.