Form4insider filings, from the source

SEC Form 4 · accession 0001559334-26-000006

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 7, 2026
Accepted (ET)
Aug 11, 2026 · 1:32 pm EDT
Rule 10b5-1 plan
box not checked
Issuer CIK
0001466593

Table I — non-derivative securities

SecurityDateCodeSharesPriceA/DOwned afterD/INature of ownership
Common StockF1,F2Aug 7, 2026S3,500$93.11D21,495D
Common StockF2Aug 7, 2026G725$0.00D20,770D
Common StockAug 7, 2026G475$0.00A475IBy daughter
Common StockAug 7, 2026G250$0.00A250IBy son

Table II — derivative securities

No Table II lines on this filing.

Explanation of responses