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Loss Per Share | 12 Months Ended
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Dec. 31, 2023
Earnings Per Share [Abstract] |
Loss Per Share | Loss Per Share A reconciliation of the numerator and denominator used in the calculation of basic and diluted loss per common share is as follows (in millions, except per share amounts):
| Successor |  |  | Predecessor
| Fiscal Year Ended December 31, 2023 |  | Fiscal Year Ended December 31, 2022 |  | From October 20, 2021 through December 31, 2021 |  |  | From July 1, 2021 through October 19, 2021 |  | Fiscal Year Ended June 30, 2021
Net loss attributable to Mirion Technologies, Inc. (Successor) / Mirion Technologies (TopCo), Ltd. (Predecessor) shareholders | $ | (96.9) |  |  | $ | (276.9) |  |  | $ | (22.2) |  |  |  | $ | (105.7) |  |  | $ | (158.3) |
Weighted average common shares outstanding – basic and diluted | 196.369 |  |  | 181.149 |  |  | 180.773 |  |  |  | 6.685 |  |  | 6.549 |
Net loss per common share attributable to Mirion Technologies, Inc. (Successor) / Mirion Technologies (TopCo), Ltd. (Predecessor) — basic and diluted | $ | (0.49) |  |  | $ | (1.53) |  |  | $ | (0.12) |  |  |  | $ | (15.81) |  |  | $ | (24.18) |
Anti-dilutive employee share-based awards, excluded | 0.639 |  |  | 0.956 |  |  | 0.003 |  |  |  | 0.200 |  |  | 0.300 |
Net loss 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 loss per share is computed by dividing loss available to common stockholders by the weighted average number of common shares outstanding, adjusted for the outstanding non-vested shares. Diluted loss 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 Company incurred a net loss for the fiscal years ended December 31, 2023, December 31, 2022, the Successor Period of October 20, 2021 through December 31, 2021 and the Predecessor Period of July 1, 2021 through October 19, 2021 and the fiscal year ended June 30, 2021, respectively; therefore, none of the potentially dilutive common shares were included in the diluted share calculations for those periods as they would have been anti-dilutive. Successor Period Upon the closing of the Business Combination, the following classes of common stock were considered in the loss per share calculation. Class A Common Stock 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 loss per share calculation, with the exception of Founder Shares discussed below. Class B Common Stock 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 directors. Except for transfers to us or to certain permitted transferees set forth in the IntermediateCo certificate of incorporation, paired interests may not be sold, transferred or otherwise disposed 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. However, 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. Our Class B common stock has voting rights but no economic interest in the Company and therefore are excluded from the calculation of basic and diluted earnings per share. Warrants As described above, the Company has outstanding warrants to purchase up to 27,249,779 shares of Class A common stock (including 18,749,779 public warrants and 8,500,000 private placement warrants). One whole warrant entitles the holder thereof to purchase one share of Mirion Class A common stock at a price of $11.50 per share. The Company’s warrants are not included in the Company’s calculation of basic loss per share and are excluded from the calculation of diluted loss per share because their inclusion would be anti-dilutive. Founder Shares Founder shares are subject to certain vesting events and forfeit if a required vesting event does not occur within five years of the closing of the Business Combination. The founder shares are subject to vesting in three equal tranches, based on the volume-weighted average price of our Class A common stock being greater than or equal to $12.00, $14.00 and $16.00 per share for any 20 trading days in any 30 consecutive trading day period. Holders of the founder shares are entitled to vote such founder shares and receive dividends and other distributions with respect to such founder shares prior to vesting, but such dividends and other distributions with respect to unvested founder shares will be set aside by the Company and shall only be paid to the holders of the founder shares upon the vesting of such founder shares. As the holders of the founder shares are not entitled to participate in earnings unless the vesting conditions are met, the 18,750,000 founders shares have been excluded from the calculation of basic earnings per share. The founders shares are also excluded from the calculation of diluted earnings per share because their inclusion would be anti-dilutive. Stock-Based Awards 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 in the Successor Period will be included in the Company's basic loss per share calculations as of the date when all necessary conditions are met. On February 21, 2023, the Company entered into Subscription Agreements for a registered direct equity purchase transaction with the T. Rowe Price Group, Inc. (“T. Rowe Price”), a global investment management organization. As part of transaction, the Company issued additional shares that will impact the loss per share calculation in the future. Refer to Note 24. Subsequent Event for further details. Predecessor Period In the Predecessor Periods presented, the rights, including the liquidation, dividend rights, sharing of losses, and voting rights of Mirion TopCo's A Ordinary Shares B Ordinary Shares were identical. As the rights of both classes of shares were identical, the undistributed earnings are allocated on a proportionate basis and the resulting net loss per share attributed to common stockholders is therefore the same for A Ordinary Shares and B Ordinary Shares on an individual or combined basis. The Company’s participating securities included the Company’s non-vested A Ordinary Shares, as the holders were entitled to non-forfeitable dividend rights in the event a dividend was paid on ordinary shares. The holders of non-vested A Ordinary Shares did not have a contractual obligation to share in losses.

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