Mirion (NYSE: MIR) CEO shifts 311,851 Class A shares to family trust

Rhea-AI Filing Summary

Mirion Technologies Chief Executive Officer Thomas D. Logan reported a bona fide gift of Class A shares. On May 6, 2026, he gifted 311,851 shares of Class A Common Stock to the Logan Family Trust and received no consideration for this transfer.

Following the gift, he directly holds 52,209 shares of Class A Common Stock and 1,544,017 shares of Class B Common Stock. The Logan Family Trust now holds 3,517,229 shares of Class A Common Stock, reported as indirect ownership.

Insider Trade Summary

311,851 shares gifted

Mixed 3 txns

Insider Logan Thomas D

Role Chief Executive Officer

Type	Security	Shares	Price	Value
Gift	Class A Common Stock	311,851	$0.00	--
holding	Class B Common Stock	--	--	--
holding	Class A Common Stock	--	--	--

Holdings After Transaction: Class A Common Stock — 52,209 shares (Direct, null); Class B Common Stock — 1,544,017 shares (Direct, null); Class A Common Stock — 3,517,229 shares (Indirect, Logan Family Trust)

Footnotes (1)

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Key Figures

Gifted Class A shares: 311,851 shares Indirect Class A holdings: 3,517,229 shares Direct Class A holdings: 52,209 shares +2 more

5 metrics

Gifted Class A shares 311,851 shares Bona fide gift on May 6, 2026

Indirect Class A holdings 3,517,229 shares Class A shares held by Logan Family Trust after gift

Direct Class A holdings 52,209 shares Direct Class A shares held after the gift

Direct Class B holdings 1,544,017 shares Direct Class B shares held after the reported transactions

Total gifted shares (summary) 311,851 shares GiftCount and giftShares reported in transaction summary

Key Terms

bona fide gift, Class A Common Stock, Class B Common Stock, Logan Family Trust

4 terms

bona fide gift financial

"The Reporting Person made a gift of 311,851 shares of Class A Common Stock"

A bona fide gift is a genuine, voluntary transfer of money, property, or benefits from one party to another made without expectation of repayment, services, or hidden conditions. Investors care because such gifts can affect company disclosures, related‑party transaction rules, tax treatment, and perceived conflicts of interest; think of it like someone giving you a present with no strings attached — but on a corporate scale, auditors and regulators need to verify it really is unconditional.

Class A Common Stock financial

"gift of 311,851 shares of Class A Common Stock to the Logan Family Trust"

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.

Class B Common Stock financial

"Class B Common Stock ... total_shares_following_transaction 1,544,017.0000"

A class B common stock is one of multiple types of a company’s ordinary shares that carries specific rights—often different voting power or dividend priority—compared with other classes. For investors it matters because those differences affect how much influence you have over company decisions, the income you might receive, and how freely the shares trade; think of it like owning a car with different keys: some keys let you start the engine and open the trunk, others only unlock the door.

Logan Family Trust financial

"gift of 311,851 shares of Class A Common Stock to the Logan Family Trust"

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^*

Logan Thomas D

(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
X	Officer (give title below)		Other (specify below)
	Chief Executive Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/06/2026

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	05/06/2026		G		311,851(1)	D	$0	52,209	D
Class B Common Stock								1,544,017	D
Class A Common Stock								3,517,229	I	Logan Family Trust

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. On May 6, 2026, the Reporting Person made a gift of 311,851 shares of Class A Common Stock to the Logan Family Trust. The Reporting Person received no consideration for this gift.

Remarks:

	/s/ Emmanuelle Lee, attorney-in-fact for Thomas D. Logan	05/07/2026
	** 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 CEO Thomas D. Logan?

Mirion reported that CEO Thomas D. Logan made a bona fide gift of 311,851 shares of Class A Common Stock on May 6, 2026. The filing notes the shares were transferred to the Logan Family Trust, and Logan received no consideration for this gift.

How many Mirion (MIR) shares did the Logan Family Trust receive in this Form 4?

The Logan Family Trust received 311,851 shares of Mirion Class A Common Stock as a gift from Thomas D. Logan. After this transfer, the trust is shown as indirectly holding 3,517,229 Class A shares, reflecting its total reported position following the transaction date.

What are Thomas D. Logan’s direct Mirion (MIR) share holdings after the reported gift?

After the gift, Thomas D. Logan directly holds 52,209 shares of Mirion Class A Common Stock and 1,544,017 shares of Class B Common Stock. These post-transaction amounts come from the Form 4 totals reported following the May 6, 2026 transaction date.

Did Mirion’s CEO receive any payment for the 311,851 MIR shares transferred?

No, the filing specifies that Thomas D. Logan received no consideration for the 311,851 Class A shares transferred. The transaction is characterized as a bona fide gift to the Logan Family Trust, not an open-market sale or a compensated disposition.

Does this Mirion (MIR) Form 4 show any insider share purchases or sales?

The Form 4 does not show any insider purchases or open-market sales. It reports a bona fide gift of 311,851 Class A shares and updates Logan’s direct and indirect holdings, including shares held through the Logan Family Trust after the non-cash transfer.