14. Earnings Per Share

Potentially dilutive common stock equivalents for the Company include convertible senior notes, unvested restricted stock, and restricted stock units. Prior to December 31, 2025, the potentially dilutive common stock equivalents for the Company also included warrants and prepaid stock purchase contracts.

As of December 31, 2025, the maximum number of shares issuable upon settlement of the 2026 Notes is 3.9 million (after giving effect to 1.0 million additional shares that would be issuable upon conversion in connection with the occurrence of certain corporate or other events). As of December 31, 2025, the maximum number of shares issuable upon settlement of the 2029 Notes is 55.0 million (after giving effect to 13.9 million additional shares that would be issuable upon conversion in connection with the occurrence of certain corporate or other events). Refer to Note 7 for more information on the 2026 Notes and the 2029 Notes.
On July 26, 2020, the Company issued to Ventas a warrant (the "Warrant") to purchase 16.3 million shares of the Company’s common stock, $0.01 par value per share, at a price per share of $3.00. During the year ended December 31, 2024, the Company issued 2.9 million shares of common stock upon the partial exercise of the Warrant by Ventas for 5.2 million shares, net of shares withheld to satisfy the aggregate exercise price. During the year ended December 31, 2025, the Company issued 5.7 million shares of common stock upon the partial exercise of the Warrant by Ventas for the remaining 11.1 million shares, net of shares withheld to satisfy the aggregate exercise price. As of December 31, 2025, the Company had no outstanding warrants.

As of December 31, 2025, the Company had no outstanding prepaid stock purchase contracts. Refer to Note 9 for more information on the prepaid stock purchase contract component of the Units.

Basic earnings per share ("EPS") is calculated by dividing net income (loss) by the weighted average number of shares of common stock outstanding during the period, after giving effect to the weighted average minimum number of shares during the period issuable upon settlement of the prepaid stock purchase contract component of the Units.

Years Ended December 31,
(in thousands)202520242023
Weighted average common shares outstanding227,869 195,612 188,023 
Weighted average minimum shares issuable under purchase contracts7,308 31,913 37,186 
Weighted average shares outstanding - basic235,177 227,525 225,209 

Diluted EPS includes the components of basic EPS and also gives effect to dilutive common stock equivalents. Diluted EPS reflects the potential dilution that could occur if securities or other instruments that are convertible into common stock were exercised or could result in the issuance of common stock. For the purposes of computing diluted EPS, weighted average shares outstanding do not include potentially dilutive securities that are anti-dilutive under the treasury stock method or if-converted method, and performance-based equity awards are included based on the attainment of the applicable performance metrics as of the end of the reporting period. The Company has the following potentially outstanding shares of common stock, which were excluded from the computation of diluted net income (loss) per share attributable to common stockholders in all periods as a result of the net loss.

As of December 31,
(in millions)202520242023
2026 Notes at initial conversion rate2.92.9 28.4 
Incremental shares issuable upon certain events for 2026 Notes1.01.0 9.9 
2029 Notes at initial conversion rate41.141.1 — 
Incremental shares issuable upon certain events for 2029 Notes13.913.9 — 
Warrants— 11.1 16.3 
Restricted stock and restricted stock units4.26.4 6.4 
Incremental shares issuable under purchase contracts— 5.2 6.5 
Total63.181.667.5

Historical Timeline

Fiscal YearFiled
2025Feb 19, 2026Showing above
2024Feb 19, 2025
2023Feb 21, 2024
2022Feb 22, 2023
2021Feb 15, 2022
2020Feb 25, 2021
2019Feb 19, 2020
2018Feb 14, 2019
2017Feb 22, 2018
2016Feb 15, 2017
2015Feb 12, 2016

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.