# Otter Tail Corp: Form 8-K, filed Jun 18, 2026

- Company: [Otter Tail Corp](/companies/ottr.md) (CIK 1466593)
- Form: 8-K
- Filed: 2026-06-18
- Accepted by EDGAR: Jun 18, 2026, 08:02 ET
- Period: 2026-06-17
- Accession: 0001466593-26-000063
- Inline XBRL: yes
- Main document: https://www.sec.gov/Archives/edgar/data/1466593/000146659326000063/ottr-20260617.htm
- All documents and exhibits: https://www.sec.gov/Archives/edgar/data/1466593/000146659326000063/

## Items reported

- Item 1.01: Entry into a material agreement

## Sections

Sections are extracted only from 10-K and 10-Q reports. Read this filing’s documents on sec.gov. https://www.sec.gov/Archives/edgar/data/1466593/000146659326000063/ottr-20260617.htm

Filed Jun 18, 2026.
Source: SEC EDGAR, the filing index for accession 0001466593-26-000063. Last ingested by Listed: Nov 4, 2026, 12:58 ET. No prices; not investment advice.