X0609 4 2026-07-16 0000886128 FUELCELL ENERGY INC FCEL 0002140145 Livingston III Homer John false C/O FUELCELL ENERGY, INC. 3 GREAT PASTURE ROAD DANBURY CT 06810 true false false false false Common Stock 2026-07-16 4 P false 26343 18.7893 A 26343 D The price in Column 4 is a weighted average price. The prices actually paid for the shares ranged from $18.71 to $18.79. The reporting person has provided to the issuer, and will provide to any security holder of the issuer, or the SEC staff, upon request, information regarding the number of shares purchased at each price within the range for all transactions reported in this Form 4 utilizing a weighted average price. /s/ Michael S. Bishop, As Power of Attorney 2026-07-20