Note 18. Loss Per Share

Basic loss per common share (“EPS”) is generally calculated as loss available to common stockholders divided by the weighted average number of common shares outstanding. Diluted EPS is generally calculated as loss available to common stockholders divided by the weighted average number of common shares outstanding plus the dilutive effect of common share equivalents.

The calculation of basic and diluted EPS for the years ended October 31, 2025, 2024 and 2023 was as follows (amounts in thousands, except share and per share amounts):

Year Ended October 31,

2025

2024

2023

  ​ ​ ​

Numerator

Net loss attributable to FuelCell Energy, Inc.

$

(187,899)

$

(126,009)

$

(107,568)

Series B preferred stock dividends

(3,200)

(3,200)

(3,200)

Net loss attributable to common stockholders

$

(191,099)

$

(129,209)

$

(110,768)

Denominator

Weighted average common shares outstanding – basic

25,743,252

16,505,257

13,991,593

Effect of dilutive securities (1)

Weighted average common shares outstanding – diluted

25,743,252

16,505,257

13,991,593

Net loss to common stockholders per share – basic

$

(7.42)

$

(7.83)

$

(7.92)

Net loss to common stockholders per share – diluted (1)

$

(7.42)

$

(7.83)

$

(7.92)

(1)Due to the net loss to common stockholders in each of the years presented above, diluted earnings per share was computed without consideration to potentially dilutive instruments as their inclusion would have been antidilutive. As of October 31, 2025, 2024 and 2023, potentially dilutive securities excluded from the diluted loss per share calculation are as follows:

October 31,

October 31,

October 31,

  ​ ​ ​

2025

  ​ ​ ​

2024

2023

Outstanding options to purchase common stock

505

574

610

Unvested Restricted Stock Units

902,061

516,561

218,105

5% Series B Cumulative Convertible Perpetual Preferred Stock

1,261

1,261

1,261

Total potentially dilutive securities

903,827

518,396

219,976

Historical Timeline

Fiscal YearFiled
2025Dec 18, 2025Showing above
2018Jan 10, 2019
2017Jan 11, 2018
2016Jan 12, 2017
2015Jan 8, 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.