---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-26-013787"
form_type: "8-K"
ticker: "NRGV"
cik: "0001828536"
company_name: "Energy Vault Holdings, Inc."
filed_at: "2026-02-12T23:59:59+00:00"
generated_at: "2026-05-16T03:05:57.221762+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# Energy Vault prices $140M convertible notes at 5.25%, due 2031

## Summary
- Offering upsized from $125M; initial purchasers have option to buy additional $20M.
- Notes bear 5.250% interest, mature March 1, 2031; conversion price ~$5.18/share (27.5% premium to $4.06 close).
- Net proceeds estimated at ~$135.5M (or ~$154.8M with full option exercise).
- Proceeds to fund capped call transactions, redeem $35M–$45M of existing convertible debentures, and for general corporate purposes.
- Capped call transactions cap price $8.12/share; reduce dilution upon conversion.

## SEC filing metadata
- accession: 0001104659-26-013787
- form_type: 8-K
- ticker: NRGV
- cik: 0001828536
- company_name: Energy Vault Holdings, Inc.
- filed_at: 2026-02-12T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1828536/000110465926013787/0001104659-26-013787-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1828536/000110465926013787/tm265927d5_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-26-013787
- JSON: https://secwatch.observer/filing/0001104659-26-013787.json
- Plain text: https://secwatch.observer/filing/0001104659-26-013787.txt

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