---
schema_version: "secwatch.filing_event.v1"
accession: "0001466593-26-000074"
form_type: "8-K"
ticker: "OTTR"
cik: "0001466593"
company_name: "Otter Tail Corp"
filed_at: "2026-09-01T13:58:27+00:00"
generated_at: "2026-09-01T14:00:03.376559+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.3
calibrated_materiality_score: 0.3
confidence: "high"
source: SEC EDGAR
---

# Two Otter Tail directors to retire at 2027 annual meeting

## Summary
- Thomas J. Webb will not stand for reelection and retires at 2027 Annual Meeting.
- Kathryn O. Johnson will not stand for reelection and retires at 2027 Annual Meeting.
- Both departures are not due to any disagreement with company operations or policies.
- Webb's retirement follows director retirement policy; Johnson reached retirement age.

## SEC filing metadata
- accession: 0001466593-26-000074
- form_type: 8-K
- ticker: OTTR
- cik: 0001466593
- company_name: Otter Tail Corp
- filed_at: 2026-09-01T13:58:27+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.3
- calibrated_materiality_score: 0.3
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1466593/000146659326000074/0001466593-26-000074-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1466593/000146659326000074/ottr-20260828.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001466593-26-000074
- JSON: https://secwatch.observer/filing/0001466593-26-000074.json
- Plain text: https://secwatch.observer/filing/0001466593-26-000074.txt

## Key facts
- Executive change
  Thomas J. Webb departed as Director at Otter Tail Corp.
  - Action: retire
  - Role: Director
  source text: On August 28, 2026, Thomas J. Webb notified Otter Tail Corporation (the “Company”) of his intention to not stand for reelection and instead retire from the Company’s Board of Directors effective at the conclusion of his current term, which expires at the time of the 2027 Annual Meeting of Shareholders, in accordance with the Corporation’s director retirement policy.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1466593/000146659326000074/0001466593-26-000074-index.htm
- Executive change
  Kathryn O. Johnson departed as Director at Otter Tail Corp.
  - Action: retire
  - Role: Director
  source text: On August 31, 2026, Kathryn O. Johnson notified the Company of her intention to not stand for reelection and instead retire from the Company’s Board of Directors effective at the conclusion of her current term, which expires at the time of the 2027 Annual Meeting of Shareholders, having reached retirement age in accordance with the Corporation’s director retirement policy.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1466593/000146659326000074/0001466593-26-000074-index.htm

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