{"schema_version":"secwatch.filing_event.v1","accession":"0001828536-25-000213","form_type":"8-K","ticker":"NRGV","cik":"0001828536","company_name":"Energy Vault Holdings, Inc.","filed_at":"2025-12-19T23:59:59+00:00","discovered_at":"2026-05-14T18:02:40.657663+00:00","generated_at":"2026-05-16T12:37:37.072041+00:00","sec_items":["2.03","3.02","9.01"],"event_type":"debt","sentiment":"neutral","materiality_score":0.6,"calibrated_materiality_score":0.6,"confidence":"high","headline":"Energy Vault closes $20M additional convertible debenture issuance to YA II PN","bullets":["Issued $20M aggregate principal of senior unsecured convertible debentures at 97% of par.","Debentures carry 7% annual interest (18% on default) and mature March 22, 2027.","Conversion price fixed at $7.53/share (150% of Dec 12 VWAP); amortization installments start Jan 2026.","Proceeds to fund working capital, energy storage project development, and construction.","This is second tranche following $30M initial closing on Sep 22, 2025, for total $50M."],"urls":{"canonical":"https://secwatch.observer/filing/0001828536-25-000213","json":"https://secwatch.observer/filing/0001828536-25-000213.json","markdown":"https://secwatch.observer/filing/0001828536-25-000213.md","text":"https://secwatch.observer/filing/0001828536-25-000213.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1828536/000182853625000213/0001828536-25-000213-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1828536/000182853625000213/nrgv-20251216.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-16T12:37:37.072041+00:00"},"review":{"review_status":"machine_generated","human_reviewed":false,"corrected":false,"correction_note":null,"correction_timestamp":null,"superseded_by":null,"related_filings":[]},"source_grounded_claims":[{"claim_id":"6d5794b4f2c0dd27f723d68b68cda1f522ca15c6","claim":"Energy Vault Holdings, Inc. incurred convertible notes of $20.0 million with YA II PN, Ltd. at 7% annual interest rate maturing March 22, 2027.","evidence_excerpt":"On December 16, 2025, the Company issued additional Debentures in the aggregate principal amount of $20.0 million to the Investor (the “Subsequent Closing”).","evidence_source":"SEC 8-K Item 2.03/2.04","evidence_url":"https://www.sec.gov/Archives/edgar/data/1828536/000182853625000213/0001828536-25-000213-index.htm","confidence":0.9,"family_label":"Debt Financings","details":[{"label":"Instrument","value":"convertible notes"},{"label":"Principal","value":"$20.0 million"},{"label":"Counterparty","value":"YA II PN, Ltd."},{"label":"Rate","value":"7% annual interest rate"},{"label":"Maturity","value":"March 22, 2027"},{"label":"Event","value":"incurrence"}]}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}