Mirion (NYSE: MIR) HR chief has 2,053 shares withheld for taxes

Rhea-AI Filing Summary

Mirion Technologies Chief Human Resources Officer Alison Ulrich had 2,053 shares of Class A common stock withheld on April 1, 2026 to cover tax obligations from vesting restricted stock units. The shares were valued at $18.59 each. After this non-discretionary tax-withholding transaction, she directly holds 36,235 shares of Mirion common stock.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Ulrich Alison

Role Chief Human Resources Officer

Type	Security	Shares	Price	Value
Tax Withholding	Class A Common Stock	2,053	$18.59	$38K

Holdings After Transaction: Class A Common Stock — 36,235 shares (Direct)

Footnotes (1)

1. [object Object]

Key Figures

Shares withheld for taxes: 2,053 shares Tax-withholding share price: $18.59 per share Shares held after transaction: 36,235 shares +1 more

4 metrics

Shares withheld for taxes 2,053 shares RSU-related tax withholding on April 1, 2026

Tax-withholding share price $18.59 per share Value used for 2,053 withheld shares

Shares held after transaction 36,235 shares Direct holdings after tax-withholding disposition

Tax-withholding transactions 1 transaction, 2,053 shares Summary of Form 4 tax-withholding activity

Key Terms

restricted stock units (RSUs), tax withholding obligations, non-derivative, Class A Common Stock, +1 more

5 terms

restricted stock units (RSUs) financial

"in connection with the vesting of restricted stock units (RSUs) previously granted"

Restricted stock units (RSUs) are a type of company promise to give employees shares of stock in the future, usually after certain conditions like working for a set time. They are like a gift promised today that you receive later, which can become valuable if the company's stock price goes up. RSUs matter because they are a way companies reward employees and can be a significant part of compensation.

tax withholding obligations financial

"withheld by the Issuer in satisfaction of tax withholding obligations in connection"

non-derivative financial

""transaction_type": "non-derivative""

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.

tax-withholding disposition financial

""transaction_action": "tax-withholding disposition""

A tax-withholding disposition is an event or transaction—such as selling or transferring securities, exercising options, or receiving compensation—that triggers a requirement to hold back part of the payment and remit it to tax authorities. It matters to investors because it reduces the cash they receive immediately and can change the timing and amount of taxable income, like a cashier taking a portion of your sale proceeds to pay taxes before you get the rest.

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 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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/01/2026

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	04/01/2026		F		2,053(1)	D	$18.59	36,235	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 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	04/02/2026
	** 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 insider transaction did Mirion (MIR) report for Alison Ulrich?

Mirion reported a routine tax-withholding transaction for Alison Ulrich. 2,053 shares of Class A common stock were withheld to satisfy tax obligations tied to vesting RSUs, rather than being sold in the open market.

Was the Mirion (MIR) insider transaction a discretionary sale of shares?

No, the transaction was not discretionary. The 2,053 shares were withheld under an issuer policy adopted in advance to cover RSU-related tax obligations, so it does not represent an active decision to sell shares.

How many Mirion (MIR) shares does Alison Ulrich hold after this transaction?

After the tax-withholding disposition, Alison Ulrich directly holds 36,235 shares of Mirion Class A common stock. This figure reflects her position immediately following the RSU-related withholding event.

What price per share was used in the Mirion (MIR) tax-withholding transaction?

The tax-withholding disposition used a price of $18.59 per share for the 2,053 shares withheld. This price is used to value the shares applied toward satisfying her RSU-related tax obligations.

What does code F mean in this Mirion (MIR) Form 4 filing?

Code F indicates a tax-withholding disposition. It means shares were delivered back to the issuer to cover an exercise price or tax liability, here for vesting RSUs, and is not an open-market sale.