
	Three Months Ended June 30, 2026		Three Months Ended June 30, 2025		Six Months Ended June 30, 2026		Six Months Ended June 30, 2025
Net earnings attributable to Mirion Technologies, Inc. shareholders	$	7.7	$	8.3	$	4.3	$	8.6

Weighted average common shares outstanding — basic	244.565		225.026		244.614		225.339
Effect of potentially dilutive securities — stock-based awards	0.181		0.722		0.420		0.945
Effect of potentially dilutive securities — convertible debt	30.321		17.310		30.321		17.310
Weighted average common shares outstanding — diluted	275.067		243.058		275.355		243.594

Net earnings per common share attributable to Mirion Technologies, Inc. — basic	$	0.03	$	0.04	$	0.02	$	0.04
Net earnings per common share attributable to Mirion Technologies, Inc. — diluted	$	0.03	$	0.03	$	0.02	$	0.04

Net earnings per share of common stock is computed using the two-class method required for multiple classes of common stock and participating securities based upon their respective rights to receive dividends as if all income for the period has been distributed. Basic earnings per share is computed by dividing earnings available to common stockholders by the weighted average number of common shares outstanding, adjusted for the outstanding non-vested shares. Diluted earnings per share is computed by giving effect to all potentially dilutive securities outstanding for the period using the treasury stock method or the if-converted method based on the nature of such securities. For periods in which the Company reports net losses, diluted net loss per common share attributable to common stockholders is the same as basic net loss per common share attributable to common stockholders, because potentially dilutive common shares are not assumed to have been issued if their effect is anti-dilutive. The weighted average number of potentially dilutive common shares related to employee stock-based awards excluded as anti-dilutive for the three and six months ended June 30, 2026 were 3.565 million and 1.966 million, respectively.

Holders of shares of our Class A common stock are entitled to one vote for each share held of record on all matters on which stockholders are entitled to vote generally, including the election or removal of directors. The holders of our Class A common stock do not have cumulative voting rights in the election of directors. Holders of shares of our Class A common stock are entitled to receive dividends when and if declared by the Company's Board of Directors out of funds legally available therefor, subject to any statutory or contractual restrictions on the payment of dividends and to any restrictions on the payment of dividends imposed by the terms of any outstanding preferred stock. Upon our liquidation, dissolution or winding up and after payment in full of all amounts required to be paid to creditors and to the holders of preferred stock having liquidation preferences, if any, the holders of shares of our Class A common stock will be entitled to receive pro rata our remaining assets available for distribution. Class A common stock issued and outstanding is included in the Company’s basic earnings per share calculation, with the exception of founder shares discussed below.

Holders of shares of our Class B common stock are entitled to one vote for each share held of record on all matters on which stockholders are entitled to vote generally, including the election or removal of directors. If at any time the ratio at which shares of IntermediateCo Class B common stock are redeemable or exchangeable for shares of our Class A common stock changes from one-for-one as the number of votes to which our Class B common stockholders are entitled will be adjusted accordingly. The holders of our Class B common stock do not have cumulative voting rights in the election of

Holders of shares of our Class B common stock are not entitled to economic interests in us or to receive dividends or to receive a distribution upon our liquidation or winding up, but are “paired interests” with shares of IntermediateCo Class B common stock. If IntermediateCo makes distributions to us other than solely with respect to our Class A common stock, the holders of paired interests will be entitled to receive distributions pro rata in accordance with the percentages of their respective shares of IntermediateCo Class B common stock.

Each stock-based award represents the right to receive a Class A common stock upon vesting of the awards. Per ASC 260, "Earnings Per Share" (“EPS”), shares issuable for little or no cash consideration upon the satisfaction of certain conditions (i.e., contingently issuable shares) should be included in the computation of basic EPS as of the date that all necessary conditions have been satisfied. As such, any stock-based awards such as RSUs that vest will be included in the Company's basic earnings (loss) per share calculations as of the date when all necessary conditions are met. We determine the potential dilutive effect of outstanding stock-based awards on EPS using the treasury stock method.

During the year ended December 31, 2025, the Company issued $400.0 million aggregate principal amount of Convertible Notes due 2030 (the "2030 Notes") and an additional $375.0 million aggregate principal amount of Convertible Notes due 2031 (the "2031 Notes"). The initial conversion rate of the 2030 Notes and 2031 Notes is 43.2751 shares and 34.6951 shares, respectively, of Mirion’s Class A common stock per $1,000 principal amount of Notes. We determine the potential dilutive impact of the outstanding Notes on EPS using the if-converted method, assuming the conversion of the Notes as of the earliest period reported or at the date of issuance, if later. The effect of the related Capped Call transactions would be anti-dilutive and, as such, is excluded.