---
schema_version: "secwatch.filing_event.v1"
accession: "0000755001-26-000031"
form_type: "8-K"
ticker: "UTL"
cik: "0000755001"
company_name: "UNITIL CORP"
filed_at: "2026-09-29T20:30:14+00:00"
generated_at: "2026-10-12T13:50:58.070819+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.4
calibrated_materiality_score: 0.4
confidence: "high"
source: SEC EDGAR
---

# Unitil issues $60M senior notes: $27M at 5.42% due 2031, $33M at 5.79% due 2036

## Summary
- $27,000,000 Series 2026A Senior Unsecured Notes priced at 5.42%, due September 24, 2031; $33,000,000 Series 2026B at 5.79%, due September 24, 2036.
- Purchasers: CoBank ACB, Thrivent Financial for Lutherans, MetLife Reinsurance Company of Hamilton Ltd., Modern Woodmen of America and CMFG Life Insurance Company.
- Net proceeds intended for capital contributions to Unitil's utility subsidiaries, refinancing existing debt and general corporate purposes.
- Note Purchase Agreement dated September 24, 2026; notes sold in a private placement exempt under Section 4(a)(2) and are unregistered.
- Notes are senior unsecured obligations, immediately due upon an event of default; some purchasers already hold other Unitil debt.

## SEC filing metadata
- accession: 0000755001-26-000031
- form_type: 8-K
- ticker: UTL
- cik: 0000755001
- company_name: UNITIL CORP
- filed_at: 2026-09-29T20:30:14+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.4
- calibrated_materiality_score: 0.4
- confidence: high
- sec_items: 1.01, 2.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/755001/000075500126000031/0000755001-26-000031-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/755001/000075500126000031/utl-20260924.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000755001-26-000031
- JSON: https://secwatch.observer/filing/0000755001-26-000031.json
- Plain text: https://secwatch.observer/filing/0000755001-26-000031.txt

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