X0306 4 2022-12-16 1 0001828536 Energy Vault Holdings, Inc. NRGV 0001908861 Elkus Henry 4360 PARK TERRACE DRIVE, SUITE 100 WESTLAKE VILLAGE CA 91361 1 0 0 0 Common Stock 2022-12-16 4 A 0 43271 0 A 66684 D Common Stock 2357944 I Held by HSI Energy Vault I LLC Common Stock 933839 I Held by HSI Energy Vault II LLC Common Stock 116728 I Held by HSI EV Brasil LLC Common Stock 55952 I Held by EN Fund I, A Series of Helena Special Investments AL Ventures, LP Reflects an award of restricted stock units ("RSUs"), which represent a contingent right to receive one share of Common Stock for each RSU. The RSUs vest (subject to the Reporting Person's continued service to the Company or its subsidiaries through the applicable vesting date) in three equal annual installments, such that the RSUs will be fully vested on October 31, 2025. /s/ Timothy Maloche, Attorney-in-Fact 2023-02-10