Mirion (NYSE: MIR) HR chief awarded 5,552 RSUs, shares withheld for tax

Rhea-AI Filing Summary

Mirion Technologies, Inc. Chief Human Resources Officer Alison Ulrich reported equity compensation and related tax withholding transactions in Class A common stock. She received a grant of 5,552 restricted stock units on March 1, 2026, described as an award with no cash price.

According to the footnotes, these units will vest in three equal annual installments starting on March 1, 2027, if her employment continues through each vesting date. On the same date, 2,360 shares at $21.61 per share were withheld by Mirion to cover tax obligations upon vesting of previously granted RSUs, under a pre-adopted policy and not as a discretionary trade. After these transactions, she directly owned 38,288 shares of Class A common stock.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider Ulrich Alison

Role Chief Human Resources Officer

Type	Security	Shares	Price	Value
Grant/Award	Class A Common Stock	5,552	$0.00	--
Tax Withholding	Class A Common Stock	2,360	$21.61	$51K

Holdings After Transaction: Class A Common Stock — 40,648 shares (Direct)

Footnotes (1)

1. Represents restricted stock units that will vest in three equal annual installments starting on March 1, 2027, subject to the Reporting Person's continued employment through each vesting date. Represents shares that have been withheld by the Issuer in satisfaction of tax withholding obligations in connection with the vesting of restricted stock units (RSUs) previously granted to the Reporting Person. Such withholding was mandated by the Issuer by a policy adopted in advance and does not represent a discretionary trade by the Reporting Person.

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^*

Ulrich Alison

(Last) (First) (Middle)

1218 MENLO DR NW

(Street)

ATLANTA GA 30318

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Mirion Technologies, Inc. [ MIR ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Human Resources Officer

3. Date of Earliest Transaction (Month/Day/Year)
03/01/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

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	03/01/2026		A		5,552(1)	A	$0	40,648	D
Class A Common Stock	03/01/2026		F		2,360(2)	D	$21.61	38,288	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 in three equal annual installments starting on March 1, 2027, subject to the Reporting Person's continued employment through each vesting date.

2. Represents shares that have been withheld by the Issuer in satisfaction of tax withholding obligations in connection with the vesting of restricted stock units (RSUs) previously granted to the Reporting Person. Such withholding was mandated by the Issuer by a policy adopted in advance and does not represent a discretionary trade by the Reporting Person.

Remarks:

	/s/ Emmanuelle Lee, attorney-in-fact for Alison Ulrich	03/03/2026
	** 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.

FAQ

What did Mirion Technologies (MIR) disclose about Alison Ulrich’s new stock award?

Mirion Technologies reported that Chief Human Resources Officer Alison Ulrich received a grant of 5,552 restricted stock units on March 1, 2026. These equity awards have no cash exercise price and represent additional potential ownership in Mirion’s Class A common stock, subject to future vesting conditions.

How do Alison Ulrich’s 5,552 Mirion RSUs vest over time?

The 5,552 restricted stock units awarded to Alison Ulrich vest in three equal annual installments beginning March 1, 2027. Each installment requires her continued employment with Mirion Technologies through the relevant vesting date, tying the equity compensation directly to ongoing service at the company.

Why were 2,360 Mirion Technologies shares disposed of in Alison Ulrich’s Form 4?

The 2,360 shares reported as a disposition were withheld by Mirion to satisfy tax withholding obligations tied to the vesting of previously granted RSUs. A company policy adopted in advance mandated this withholding, so it did not represent a discretionary open-market trade by Alison Ulrich.

What price was used for the 2,360 Mirion shares withheld for taxes?

The 2,360 Mirion Technologies shares withheld to cover tax obligations were valued at $21.61 per share. This withholding related to the vesting of earlier restricted stock units and was executed under Mirion’s pre-established tax policy rather than an elective transaction by the executive.

How many Mirion Technologies shares does Alison Ulrich own after these transactions?

After the March 1, 2026 transactions, Alison Ulrich directly owned 38,288 shares of Mirion Technologies Class A common stock. This figure reflects both the new restricted stock unit award and the shares withheld for taxes in connection with previously granted restricted stock units vesting.

Is the tax-related share disposition by Alison Ulrich considered a market sale of Mirion stock?

No, the disposition is not a discretionary market sale. The 2,360 shares were withheld by Mirion under a pre-adopted policy to satisfy tax withholding obligations arising from RSU vesting, meaning the transaction was driven by company policy rather than an elective trading decision.