Energy Vault Holdings NRGV Bank guarantees

In the ordinary course of business and under certain contracts, the Company is required to post letters of credit or bank guarantees for its customers, for project performance, and for its vendors for payment guarantees. Such letters of credit or bank guarantees are generally issued by a bank or a similar financial institution. The letter of credit or bank guarantee commits the issuer to pay specified amounts to the holder of the letter of credit or bank guarantee under certain conditions. As of June 30, 2026, the Company had $18.0 million in outstanding letters of credit and $18.3 million in bank guarantees issued through the Company’s credit relationships. The Company’s outstanding letters of credit and bank guarantees are collateralized by cash classified as restricted cash on the condensed consolidated balance sheet. The Company is not aware of any material claims relating to its outstanding letters of credit or bank guarantees.