X0609 4 2026-07-17 0 0001868941 Fluence Energy, Inc. FLNC 0001781553 Williams Peter Bennett false C/O FLUENCE ENERGY, INC. 4601 FAIRFAX DRIVE, SUITE 600 ARLINGTON VA 22203 0 1 0 0 SVP and CPSCO 0 Class A Common Stock 2026-07-17 4 M 0 8588 0 A 26197 D Class A Common Stock 2026-07-17 4 F 0 3905 14.07 D 22292 D Restricted Stock Unit 2026-07-17 4 M 0 8588 0 D Class A Common Stock 8588 0 D Each restricted stock unit ("RSU") represents a contingent right to receive one share of Class A Common Stock of the Issuer. Represents the number of shares of Class A Common Stock that have been withheld to satisfy tax withholding obligations in connection with the vesting of the RSUs. The restricted stock units vested in three equal annual installments with the first installment having vested on July 17, 2024, the second installment having vested on July 17, 2025 and the final installment having vested on July 17, 2026. /s/ Leah Patterson as Attorney-in-fact for Peter Bennett Williams 2026-07-21