---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-22-100447"
form_type: "8-K"
ticker: "NSARO"
cik: "0000013372"
company_name: "NSTAR ELECTRIC CO"
filed_at: "2022-09-15T23:59:59+00:00"
generated_at: "2026-06-23T09:20:56.215342+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.55
calibrated_materiality_score: 0.55
confidence: "high"
source: SEC EDGAR
---

# NSTAR Electric issues $400M of 4.95% Debentures due 2052

## Summary
- Issued $400M aggregate principal of 4.95% Debentures due September 15, 2052.
- Interest payable semi-annually on March 15 and September 15, accruing from Sept 15, 2022.
- Underwriters include BofA Securities, J.P. Morgan, Morgan Stanley, and U.S. Bancorp.
- Debentures issued under indenture dated Sept 1, 1988 with Bank of New York Mellon as trustee.

## SEC filing metadata
- accession: 0001104659-22-100447
- form_type: 8-K
- ticker: NSARO
- cik: 0000013372
- company_name: NSTAR ELECTRIC CO
- filed_at: 2022-09-15T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.55
- calibrated_materiality_score: 0.55
- confidence: high
- sec_items: 2.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/13372/000110465922100447/0001104659-22-100447-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/13372/000110465922100447/tm2225900d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-22-100447
- JSON: https://secwatch.observer/filing/0001104659-22-100447.json
- Plain text: https://secwatch.observer/filing/0001104659-22-100447.txt

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