---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-26-060236"
form_type: "8-K"
ticker: "NSARO"
cik: "0000013372"
company_name: "NSTAR ELECTRIC CO"
filed_at: "2026-05-13T20:10:16+00:00"
generated_at: "2026-05-13T22:07:12.378813+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.4
confidence: "high"
source: SEC EDGAR
---

# NSTAR Electric issues $700M in debentures: $350M at 4.650% due 2031, $350M at 5.200% due 2036

## Summary
- Issued $350M of 4.650% debentures due May 15, 2031; interest payable semi-annually starting Nov 15, 2026.
- Issued $350M of 5.200% debentures due May 15, 2036; interest payable semi-annually starting Nov 15, 2026.
- Underwriting syndicate includes Goldman Sachs, Mizuho, TD Securities, U.S. Bancorp, and Wells Fargo.
- Debentures issued under 1988 indenture with Bank of New York Mellon Trust as trustee.

## SEC filing metadata
- accession: 0001104659-26-060236
- form_type: 8-K
- ticker: NSARO
- cik: 0000013372
- company_name: NSTAR ELECTRIC CO
- filed_at: 2026-05-13T20:10:16+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.4
- confidence: high
- sec_items: 2.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/13372/000110465926060236/0001104659-26-060236-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/13372/000110465926060236/tm2614485d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-26-060236
- JSON: https://secwatch.observer/filing/0001104659-26-060236.json
- Plain text: https://secwatch.observer/filing/0001104659-26-060236.txt

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