Mirion director receives 7,383-share equity grant

CASCELLA ROBERT reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

CASCELLA ROBERT reported acquisition or exercise transactions in this Form 4 filing.

Mirion Technologies director Robert Cascella received an equity award in the form of restricted stock units. The grant covers 7,383 shares of Class A Common Stock at no cash cost, increasing his direct holdings to 60,801 shares after the transaction.

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 Cascella continues to serve as a non-employee director on the Board through that vesting date. This is a routine, compensation-related equity grant rather than an open-market share purchase.

Insider Trade Summary

Grant/Award: 7,383 shares

Grant/Award 1 txn

Insider CASCELLA ROBERT

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 — 60,801 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

RSU grant size: 7,383 shares Grant price: $0.00 per share Post-transaction holdings: 60,801 shares +2 more

5 metrics

RSU grant size 7,383 shares Restricted stock units awarded to director

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

Post-transaction holdings 60,801 shares Cascella’s direct Class A Common Stock after grant

Vesting trigger 1 First anniversary Vests on first anniversary of grant date if still serving

Vesting trigger 2 Next annual meeting Alternatively vests on date of next annual stockholder meeting

Key Terms

restricted stock units, non-employee director, annual stockholder meeting, Class A Common Stock

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.

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.

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.

FAQ

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

What did Mirion Technologies (MIR) director Robert Cascella report in this Form 4?

Robert Cascella reported receiving 7,383 restricted stock units of Mirion Technologies Class A Common Stock. The award is a compensation-related grant, not an open-market purchase, and increases his direct holdings to 60,801 shares after the transaction.

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

The Form 4 reflects a grant of restricted stock units, not a stock purchase. Cascella acquired 7,383 units at a reported price of $0.00 per share as part of his non-employee director compensation package on the Mirion Technologies Board.

When do Robert Cascella’s restricted stock units in Mirion Technologies (MIR) 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 requires Cascella’s continued service as a non-employee director on the Mirion Technologies Board through that date.

How many Mirion Technologies (MIR) shares does Robert Cascella hold after this Form 4 transaction?

Following the grant, Cascella directly owns 60,801 shares of Mirion Technologies Class A Common Stock. This total includes the 7,383 restricted stock units reported in the filing, which are subject to vesting based on his continued Board service.

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

No, the Form 4 does not show any selling activity. It reports only an acquisition of 7,383 restricted stock units as a grant or award, with no dispositions, tax withholdings, or open-market sales disclosed for Robert Cascella in this transaction.

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^*

CASCELLA ROBERT

(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	60,801	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 Robert Cascella	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)