| Loss Per Share |
Note 14. Loss Per Share The calculation of basic and diluted loss per share was as follows (in thousands, except share and per share amounts): | | | | | | | | | | | | | | Three Months Ended April 30, | | Six Months Ended April 30, | | 2026 | | 2025 | | | 2026 | | 2025 | Numerator | | | | | | | | | | | | | Net loss attributable to FuelCell Energy, Inc. | $ | (77,907) | | $ | (38,049) | | | $ | (100,767) | | $ | (66,375) | Series B preferred stock dividends | | (800) | | | (800) | | | | (1,600) | | | (1,600) | Net loss attributable to common stockholders | $ | (78,707) | | $ | (38,849) | | | $ | (102,367) | | $ | (67,975) | Denominator | | | | | | | | | | | | | Weighted average common shares outstanding – basic | | 54,224,428 | | | 21,740,193 | | | | 51,165,339 | | | 21,110,664 | Effect of dilutive securities (1) | | — | | | — | | | | — | | | — | Weighted average common shares outstanding – diluted | | 54,224,428 | | | 21,740,193 | | | | 51,165,339 | | | 21,110,664 | Net loss to common stockholders per share – basic | $ | (1.45) | | $ | (1.79) | | | $ | (2.00) | | $ | (3.22) | Net loss to common stockholders per share – diluted (1) | $ | (1.45) | | $ | (1.79) | | | $ | (2.00) | | $ | (3.22) |
| (1) | Due to the net loss to common stockholders in each of the periods presented above, diluted loss per share was computed without consideration to potentially dilutive instruments as their inclusion would have been anti-dilutive. As of April 30, 2026 and 2025, potentially dilutive securities excluded from the diluted loss per share calculation are as follows: |
| | | | | | | | | | April 30, | | April 30, | | | | 2026 | | 2025 | | Outstanding options to purchase common stock | | | 439 | | | 532 | | Unvested Restricted Stock Units | | | 2,110,363 | | | 1,009,460 | | 5% Series B Cumulative Convertible Perpetual Preferred Stock | | | 1,261 | | | 1,261 | | Total potentially dilutive securities | | | 2,112,063 | | | 1,011,253 | |
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