---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-25-100409"
form_type: "8-K"
ticker: "NSARO"
cik: "0000013372"
company_name: "NSTAR ELECTRIC CO"
filed_at: "2025-10-17T23:59:59+00:00"
generated_at: "2026-05-17T03:21:42.903084+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# NSTAR Electric issues additional $300M of 5.20% debentures due 2035

## Summary
- Issued $300M additional principal of 5.20% Debentures due 2035 on October 17, 2025.
- Total outstanding of the series now $700M; debentures mature March 1, 2035.
- Interest at 5.20% payable semi-annually on March 1 and September 1.
- Underwriting syndicate led by BofA Securities, J.P. Morgan, Morgan Stanley, PNC, RBC, U.S. Bancorp.

## SEC filing metadata
- accession: 0001104659-25-100409
- form_type: 8-K
- ticker: NSARO
- cik: 0000013372
- company_name: NSTAR ELECTRIC CO
- filed_at: 2025-10-17T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.5
- confidence: high
- sec_items: 2.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/13372/000110465925100409/0001104659-25-100409-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/13372/000110465925100409/tm2528955d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-25-100409
- JSON: https://secwatch.observer/filing/0001104659-25-100409.json
- Plain text: https://secwatch.observer/filing/0001104659-25-100409.txt

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