---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-25-017424"
form_type: "8-K"
ticker: "NSARO"
cik: "0000013372"
company_name: "NSTAR ELECTRIC CO"
filed_at: "2025-02-26T23:59:59+00:00"
generated_at: "2026-05-26T03:25:44.447161+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# NSTAR Electric issues $800M in debentures with 4.85% and 5.20% coupons

## Summary
- Issued $400 million of 4.85% debentures due 2030 on February 26, 2025.
- Issued $400 million of 5.20% debentures due 2035 on February 26, 2025.
- Debentures issued under indenture with Bank of New York Mellon Trust Company.
- Underwriters include Goldman Sachs, Mizuho, BNY Mellon, PNC, RBC, Citigroup, J.P. Morgan, and Wells Fargo.

## SEC filing metadata
- accession: 0001104659-25-017424
- form_type: 8-K
- ticker: NSARO
- cik: 0000013372
- company_name: NSTAR ELECTRIC CO
- filed_at: 2025-02-26T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.7
- confidence: high
- sec_items: 2.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/13372/000110465925017424/0001104659-25-017424-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/13372/000110465925017424/tm257669d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-25-017424
- JSON: https://secwatch.observer/filing/0001104659-25-017424.json
- Plain text: https://secwatch.observer/filing/0001104659-25-017424.txt

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