---
schema_version: "secwatch.filing_event.v1"
accession: "0000755001-26-000019"
form_type: "8-K"
ticker: "UTL"
cik: "0000755001"
company_name: "UNITIL CORP"
filed_at: "2026-05-27T20:30:16+00:00"
generated_at: "2026-05-27T20:32:21.137518+00:00"
event_type: "m_and_a"
sentiment: "neutral"
materiality_score: 0.55
calibrated_materiality_score: 0.55
confidence: "high"
source: SEC EDGAR
---

# Unitil extends Aquarion water acquisition closing deadline to June 30, 2026

## Summary
- Amendment No. 3 extends termination date from May 25, 2026 to June 30, 2026.
- Purchase price and other material terms of the original Purchase Agreement remain unchanged.
- Seller also notified Buyer of an amendment to the Eversource Agreement as required by the agreement.
- This is the third extension; prior extensions pushed date to Feb 23 and May 25, 2026 respectively.

## SEC filing metadata
- accession: 0000755001-26-000019
- form_type: 8-K
- ticker: UTL
- cik: 0000755001
- company_name: UNITIL CORP
- filed_at: 2026-05-27T20:30:16+00:00
- event_type: m_and_a
- sentiment: neutral
- materiality_score: 0.55
- calibrated_materiality_score: 0.55
- confidence: high
- sec_items: 1.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/755001/000075500126000019/0000755001-26-000019-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/755001/000075500126000019/utl-20260525.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000755001-26-000019
- JSON: https://secwatch.observer/filing/0000755001-26-000019.json
- Plain text: https://secwatch.observer/filing/0000755001-26-000019.txt

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