---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-26-016759"
form_type: "8-K"
ticker: "NRGV"
cik: "0001828536"
company_name: "Energy Vault Holdings, Inc."
filed_at: "2026-02-18T23:59:59+00:00"
generated_at: "2026-05-16T02:09:10.668892+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# Energy Vault issues $140M 5.25% convertible notes due 2031; conversion price $5.18

## Summary
- $140M aggregate principal of 5.250% Convertible Senior Notes due 2031 issued.
- Conversion price ~$5.1765/share, premium ~27.5% above Feb 11, 2026 closing price.
- Capped call transactions entered to reduce dilution; cap price $8.12/share.
- Notes mature March 1, 2031; interest payable semi-annually at 5.250%.
- Company may not redeem notes before March 5, 2029.

## SEC filing metadata
- accession: 0001104659-26-016759
- form_type: 8-K
- ticker: NRGV
- cik: 0001828536
- company_name: Energy Vault Holdings, Inc.
- filed_at: 2026-02-18T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 1.01, 2.03, 3.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1828536/000110465926016759/0001104659-26-016759-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1828536/000110465926016759/tm266680d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-26-016759
- JSON: https://secwatch.observer/filing/0001104659-26-016759.json
- Plain text: https://secwatch.observer/filing/0001104659-26-016759.txt

## Source-grounded claims
- claim_id: ad4b6cd86456a3f1dccbb94071d51efd157e039f
  claim: Energy Vault Holdings, Inc. incurred convertible notes of $140.0 million aggregate principal amount with U.S. Bank Trust Company, National Association at 5.250% per year maturing mature on March 1, 2031.
  evidence_excerpt: On February 17, 2026, Energy Vault Holdings, Inc. (the “Company”) completed its previously announced private offering (the “Offering”) of $140.0 million aggregate principal amount of 5.250% Convertible Senior Notes due 2031 (the “Notes”).
  evidence_url: https://www.sec.gov/Archives/edgar/data/1828536/000110465926016759/0001104659-26-016759-index.htm
- claim_id: 9269eb5ac46008efde1369b66a7ab3ae15ca93ff
  claim: Energy Vault Holdings, Inc. entered into Indenture with U.S. Bank Trust Company, National Association valued at $140.0 million aggregate principal amount of 5.250% Convertible Senior Notes due 2031 (effective 2026-02-17).
  evidence_excerpt: On February 17, 2026, Energy Vault Holdings, Inc. (the “Company”) completed its previously announced private offering (the “Offering”) of $140.0 million aggregate principal amount of 5.250% Convertible Senior Notes due 2031 (the “Notes”). The Notes were issued pursuant to an indenture, dated February 17, 2026 (the “Indenture”), between the Company and U.S. Bank Trust Company, National Association, as trustee.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1828536/000110465926016759/0001104659-26-016759-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.