X0609 4 2026-05-08 0000886128 FUELCELL ENERGY INC FCEL 0002051411 Achanta Shankar false 3 GREAT PASTURE ROAD DANBURY CT 06810 false true false false EVP, Chf. Product &Tech Ofc. false Common Stock 2026-05-08 4 M false 2020 0 A 5610 D Common Stock 2026-05-08 4 F false 492 13.70 D 5118 D Employee Restricted Stock Units 0 2026-05-08 4 M false 2020 0 D Common Stock 2020 2020 D Restricted stock units convert into common stock on a one-for-one basis. Represents shares withheld to satisfy tax obligations upon the vesting of restricted stock units. On May 8, 2024, the reporting person was granted restricted stock units, which vest 1/3 on each of the first three anniversaries of the date of grant, subject to continued employment. /s/ Michael S. Bishop, as Power of Attorney 2026-05-12