X0508 4 2025-12-05 0000886128 FUELCELL ENERGY INC FCEL 0001408158 Few Jason C/O FUELCELL ENERGY, INC. 3 GREAT PASTURE ROAD DANBURY CT 06810 true true CEO false Common Stock 2025-12-05 4 M 0 4654 0 A 41385 D Common Stock 2025-12-05 4 F 0 1459 8.37 D 39926 D Common Stock 2025-12-05 4 M 0 5135 0 A 45061 D Common Stock 2025-12-05 4 F 0 1610 8.37 D 43451 D Employee Restricted Stock Unit 2025-12-05 4 M 0 4654 0 D Common Stock 4654 0 D Employee Performance Share Unit 2025-12-05 4 M 0 5135 0 D Common Stock 5135 0 D Reflects the 1-for-30 reverse stock split effected by the Issuer on November 8, 2024. Restricted stock units were converted into common stock on a one-for-one basis. Represents shares withheld to satisfy tax obligations upon the vesting of restricted stock units. Shares were issued in settlement of earned performance share units. Represents shares withheld to satisfy tax obligations upon the vesting of performance share units. On December 05, 2022, the reporting person was granted restricted stock units, which vested 1/3 on each of the first, second and third anniversaries of the date of grant, subject to continued employment. On December 05, 2022, the reporting person was granted performance shares which were based on performance over the three-year performance period ended October 31, 2025, subject to continued employment until the third anniversary of the grant date (December 5, 2025). The performance goal was the TSR of the Company relative to the TSR of the Russell 2000 during the performance period. The Compensation and Leadership Development Committee certified achievement at 36.77% of the target number previously reported (as adjusted to reflect the 1-for-30 reverse stock split effected by the Issuer on November 8, 2024), resulting in the award of 5,135 shares. /s/ Michael S. Bishop, as Power of Attorney 2025-12-09