Net Loss Per Share
Basic net loss per share is calculated by dividing net loss attributable to common stockholders by the weighted average number of shares of common stock outstanding during the period. Diluted net loss per share is calculated based on the weighted average number of shares of common stock plus the dilutive effect of potential common share equivalents outstanding during the period as determined under the treasury stock method.

The following table sets forth the computation of basic and diluted net loss per share:
 Year Ended December 31,
(In millions, except per share data)202220232024
Basic and diluted net loss per share:
Net loss attributable to common stockholders$(804.8)$(837.8)$(858.2)
Weighted average shares outstanding:
Common stock211.2215.3224.8
Number of shares used in per share computations211.2215.3224.8
Net loss per share$(3.81)$(3.89)$(3.82)

Potential common share equivalents consist of shares issuable upon the exercise of stock options, vesting of restricted stock or purchase under the ESPP, as well as contingent shares associated with our acquisition of Datapipe. Since we were in a net loss position for all periods presented, basic net loss per share is the same as diluted net loss per share for all periods as the inclusion of all potential common shares outstanding would have been anti-dilutive. We excluded 23.3 million, 38.6 million and 28.9 million potential common shares from the computation of dilutive loss per share for the years ended December 31, 2022, 2023 and 2024, respectively, because the effect would have been anti-dilutive.

About Earnings Per Share Disclosures

The earnings per share disclosure breaks down the calculation from net income to both basic and diluted EPS, revealing the full impact of a company's capital structure on per-share economics. The reconciliation between basic and diluted share counts exposes how many stock options, RSUs, convertible securities, and warrants are potentially dilutive to existing shareholders.

Key signals: a widening gap between basic and diluted shares indicates growing dilution from equity compensation or convertible instruments. Anti-dilutive securities excluded from the diluted calculation deserve attention — they represent latent dilution that will materialize if the stock price rises. Watch for the effect of share buybacks on per-share metrics: EPS growth driven primarily by repurchases rather than income growth signals weakening fundamentals. Compare year-over-year changes in the diluted share count against equity compensation expense to assess whether management is effectively managing dilution.