Form4insider filings, from the source

SEC Form 4 · accession 0001559334-26-000010

Otter Tail Corp · OTTR

Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗

Reporting owner
Paul L Knutson
Officer — VP, Human Resources
Period of report
Aug 10, 2026
Accepted (ET)
Aug 12, 2026 · 11:24 am EDT
Rule 10b5-1 plan
box not checked
Issuer CIK
0001466593

Table I — non-derivative securities

SecurityDateCodeSharesPriceA/DOwned afterD/INature of ownership
Common StockF2Aug 10, 2026S250$92.84D0IBy son
Common StockF3Aug 11, 2026S475$94.63D0IBy daughter
Common StockF1holding———20,770D

Table II — derivative securities

No Table II lines on this filing.

Explanation of responses