BlackRock Discloses 35.69M Shares of Mirion Class A (14.8%)

Rhea-AI Filing Summary

BlackRock, Inc. reported beneficial ownership of 35,690,382 shares of Mirion Technologies, Inc. Class A stock, representing 14.8% of the class as of the reporting event date 09/30/2025. The filing, submitted as a Schedule 13G (Amendment No. 1) and signed on 10/02/2025, shows 35,267,730 shares with sole voting power and 35,690,382 shares with sole dispositive power. The Schedule notes that the reported holdings reflect aggregated positions of certain BlackRock business units and that one identified holder, iShares Core S&P Small-Cap ETF, holds more than 5% of Mirion common stock. The filing states the shares were acquired and are held in the ordinary course of business and not for the purpose of changing or influencing control of the issuer.

Positive

• Material stake disclosed: BlackRock beneficially owns 35,690,382 shares, representing 14.8% of Class A stock
• Sole voting control largely centralized: 35,267,730 shares reported with sole voting power
• Passive intent declared: Filing made on Schedule 13G with certification that holdings are not held to influence control

Negative

• High concentration: A single institutional holder controls 14.8% of the class, which may concentrate voting influence
• Aggregator disclosure: Holdings reflect aggregated business units; specific unit-level exposures are not itemized in this filing

Insights

Institutional Ownership Analyst

BlackRock holds a material 14.8% stake in MIR via 35.69M shares.

The Schedule 13G/A discloses that BlackRock, Inc. beneficially owns 35,690,382 Class A shares, equal to 14.8% of the class. This level of ownership is above typical 5% thresholds that attract investor attention and may affect float and voting dynamics.

The filing clarifies sole voting power of 35,267,730 and sole dispositive power of 35,690,382, indicating centralized control of voting and disposition within the reporting business units that aggregated the position.

Corporate Governance / Regulatory Specialist

The Schedule 13G/A indicates passive ownership; BlackRock certifies no intent to influence control.

The document is filed under Schedule 13G (not 13D) and includes a certification that the securities are held in the ordinary course of business and not to change control, consistent with passive investor reporting. The filing also identifies an affiliated holder, iShares Core S&P Small-Cap ETF, holding more than 5%.

The submission includes Exhibit 24 (Power of Attorney) and Exhibit 99 (Item 7) for subsidiary identification, aligning with disclosure rules for aggregated business-unit reporting.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

Mirion Technologies, Inc.

(Name of Issuer)

Class A Stock

(Title of Class of Securities)

60471A101

(CUSIP Number)

09/30/2025

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

SCHEDULE 13G

CUSIP No. 60471A101

1

Names of Reporting Persons

BlackRock, Inc.

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 35,267,730.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 35,690,382.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

35,690,382.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

14.8 %

12

Type of Reporting Person (See Instructions)

HC

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Mirion Technologies, Inc.
(b)	Address of issuer's principal executive offices: 1218 MENLO DRIVE ATLANTA GA 30318
Item 2.
(a)	Name of person filing: BlackRock, Inc. In accordance with SEC Release No. 34-39538 (January 12, 1998), this Schedule 13G reflects the securities beneficially owned, or deemed to be beneficially owned, by certain business units (collectively, the "Reporting Business Units") of BlackRock, Inc. and its subsidiaries and affiliates. It does not include securities, if any, beneficially owned by other business units whose beneficial ownership of securities are disaggregated from that of the Reporting Business Units in accordance with such release.
(b)	Address or principal business office or, if none, residence: BlackRock, Inc., 50 Hudson Yards New York, NY 10001
(c)	Citizenship: See Item 4 of Cover Page
(d)	Title of class of securities: Class A Stock
(e)	CUSIP No.: 60471A101
Item 4.	Ownership
(a)	Amount beneficially owned: 35690382
(b)	Percent of class: 14.8 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 35267730
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 35690382
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	Ownership of 5 Percent or Less of a Class.
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required. The interest of 1 such person, iShares Core S&P Small-Cap ETF, in the common stock of Mirion Technologies, Inc. is more than five percent of the total outstanding common stock.
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	If a parent holding company has filed this schedule, pursuant to Rule 13d-1(b)(ii)(G), so indicate under Item 3(g) and attach an exhibit stating the identity and the Item 3 classification of the relevant subsidiary. If a parent holding company has filed this schedule pursuant to Rule 13d-1(c) or Rule 13d-1(d), attach an exhibit stating the identification of the relevant subsidiary. See Exhibit 99
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

BlackRock, Inc.

Signature:	Spencer Fleming
Name/Title:	Managing Director
Date:	10/02/2025

Exhibit Information

Exhibit 24: Power of Attorney Exhibit 99: Item 7

FAQ

How many Mirion Technologies (MIR) shares does BlackRock report owning?

BlackRock reports beneficial ownership of 35,690,382 Class A shares of Mirion Technologies, representing 14.8% of the class.

Does BlackRock have voting power over the MIR shares it owns?

Yes; the filing shows 35,267,730 shares with sole voting power and 0 shares with shared voting power.

Is BlackRock claiming active control or a passive stake in MIR?

The Schedule 13G/A includes a certification that the securities are held in the ordinary course of business and not for the purpose of changing or influencing control.

Are any affiliated funds identified as holding more than 5% of MIR?

Yes; the filing states that iShares Core S&P Small-Cap ETF holds more than 5% of Mirion common stock.

When was this Schedule 13G/A signed and filed?

The signature block shows the filing was signed by Spencer Fleming, Managing Director, on 10/02/2025, reporting an event date of 09/30/2025.