---
schema_version: "secwatch.filing_event.v1"
accession: "0001466593-26-000057"
form_type: "8-K"
ticker: "OTTR"
cik: "0001466593"
company_name: "Otter Tail Corp"
filed_at: "2026-05-29T14:47:20+00:00"
generated_at: "2026-05-29T14:48:43.244013+00:00"
event_type: "litigation"
sentiment: "neutral"
materiality_score: 0.55
calibrated_materiality_score: 0.55
confidence: "high"
source: SEC EDGAR
---

# Otter Tail settles two class claims in PVC pipe antitrust litigation for $73.5M

## Summary
- Will pay $39.5M to Direct Purchaser Class and $34.0M to Non-Converter Seller Purchaser Class.
- EUP claims remain pending; company will continue to defend those.
- Settlement does not admit wrongdoing; company denies liability.
- Payments to be made ~21 days after court preliminary approval; expects to use available cash.
- Company says settlement not expected to materially affect financial position or liquidity.

## SEC filing metadata
- accession: 0001466593-26-000057
- form_type: 8-K
- ticker: OTTR
- cik: 0001466593
- company_name: Otter Tail Corp
- filed_at: 2026-05-29T14:47:20+00:00
- event_type: litigation
- sentiment: neutral
- materiality_score: 0.55
- calibrated_materiality_score: 0.55
- confidence: high
- sec_items: 1.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1466593/000146659326000057/0001466593-26-000057-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1466593/000146659326000057/ottr-20260528.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001466593-26-000057
- JSON: https://secwatch.observer/filing/0001466593-26-000057.json
- Plain text: https://secwatch.observer/filing/0001466593-26-000057.txt

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