Form4insider filings, from the source

Company · CIK 0001466593 · SIC 4911 — Electric Services · Nasdaq

Otter Tail Corp · OTTR

Insider activity reported against this company. All insider holders · On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted
Open-market buys & salesbuys $0 · 0sales $394k · 2net −$394k
$10k$10k$100k$100k$1M$1MbuyssalesJun 28Jul 13Jul 28Aug 13Aug 28Sep 12Sep 28

Reported at this company — common stock

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Aug 10, 2026 SForm 4 →Aug 12, 11:24 am EDTPaul L KnutsonVP, Human Resources725$94.01$68,1590−100%
Aug 7, 2026 GForm 4 →Aug 11, 1:32 pm EDTPaul L KnutsonVP, Human Resources1,450——250—
Aug 7, 2026 SForm 4 →Aug 11, 1:32 pm EDTPaul L KnutsonVP, Human Resources3,500$93.11$325,88521,495−14.0%

Reported at this company — derivatives (options, RSUs, warrants)

No reported derivative activity in this period.