X0508 4 2025-04-21 0000886128 FUELCELL ENERGY INC FCEL 0001766331 Jordan Tyrone Michael C/O FUELCELL ENERGY, INC 3 GREAT PASTURE ROAD DANBURY CT 06810 true false Deferred Common Stock Units. 2025-04-21 4 A 0 23859 0 A Common Stock 23859 27983 D Deferred common stock units issued to the reporting person pursuant to the FuelCell Energy, Inc. Directors Deferred Compensation Plan. In accordance with elections made by the reporting person under the Directors Deferred Compensation Plan, the shares of common stock underlying the common stock units are payable to the reporting person, on a one-for-one basis (i.e., one share of common stock for each common stock unit), upon separation from service as a director. Reflects the 1-for-30 reverse stock split effected by the Issuer on November 8, 2024. /s/ Michael S. Bishop, As Power of Attorney 2025-04-23