As of the latest Form 4 filed Apr 14, 2026.
What Otter Tail Corporation insiders — officers, directors and 10% owners — have bought and sold in their own stock, straight from their SEC Form 4 filings. Values are shares × the reported transaction price where both are disclosed.
Newest filing first — the 33 most recent filings for OTTR.
| Filed | Trade date | Insider | Transaction | Shares | Price | Value | 10b5-1 | Filing |
|---|---|---|---|---|---|---|---|---|
| 2026-04-14 | 2026-04-13 | Ludford Mary E Director | AAward | +1.50K | — | — | No | Form 4 ↗ |
| 2026-04-14 | 2026-04-13 | Crain Jeanne H Director | AAward | +1.50K | — | — | No | Form 4 ↗ |
| 2026-04-14 | 2026-04-13 | LeBeau Michael E Director | AAward | +1.50K | — | — | No | Form 4 ↗ |
| 2026-04-14 | 2026-04-13 | Clark Christopher B Director | AAward | +1.90K | — | — | No | Form 4 ↗ |
| 2026-04-14 | 2026-04-13 | Johnson Kathryn O Director | AAward | +1.50K | — | — | No | Form 4 ↗ |
| 2026-04-14 | 2026-04-13 | Rasche Steven P Director | AAward | +1.90K | — | — | No | Form 4 ↗ |
| 2026-04-14 | 2026-04-13 | ERICKSON JOHN D Director | AAward | +1.50K | — | — | No | Form 4 ↗ |
| 2026-04-14 | 2026-04-13 | PARTAIN NATHAN I Director | AAward | +2.00K | — | — | No | Form 4 ↗ |
| 2026-04-14 | 2026-04-13 | WEBB THOMAS J Director | AAward | +1.50K | — | — | No | Form 4 ↗ |
| 2026-04-09 | 2026-04-08 | Wahlund Todd R Chief Financial Officer | FTax | −186.00 | $90.11 | $16.8K | No | Form 4 ↗ |
| 2026-04-09 | 2026-04-08 | Wahlund Todd R, Chief Financial Officer | MExercise | +460.00 | $90.11 | $41.5K | No | Form 4 ↗ |
| 2026-02-12 | 2026-02-11 | Smestad Jennifer O. VP, General Council & Corp Sec | FTax | −3.03K | $86.43 | $262K | No | Form 4 ↗ |
| 2026-02-12 | 2026-02-11 | Smestad Jennifer O., VP, General Council & Corp Sec | AAward | +6.00K | $86.43 | $519K | No | Form 4 ↗ |
| 2026-02-12 | 2026-02-11 | Abbott John S Sr VP, Manufacturing Platform | FTax | −4.21K | $86.43 | $364K | No | Form 4 ↗ |
| 2026-02-12 | 2026-02-11 | Abbott John S, Sr VP, Manufacturing Platform | AAward | +8.40K | $86.43 | $726K | No | Form 4 ↗ |
| 2026-02-12 | 2026-02-11 | ROGELSTAD TIMOTHY J Sr VP, Electric Platform | FTax | −4.21K | $86.43 | $364K | No | Form 4 ↗ |
| 2026-02-12 | 2026-02-11 | ROGELSTAD TIMOTHY J, Sr VP, Electric Platform | AAward | +8.40K | $86.43 | $726K | No | Form 4 ↗ |
| 2026-02-12 | 2026-02-11 | KNUTSON PAUL L VP, Human Resources | FTax | −1.59K | $86.43 | $138K | No | Form 4 ↗ |
| 2026-02-12 | 2026-02-11 | KNUTSON PAUL L, VP, Human Resources | AAward | +3.60K | $86.43 | $311K | No | Form 4 ↗ |
| 2026-02-12 | 2026-02-11 | MACFARLANE CHARLES S President & CEO | FTax | −23.5K | $86.43 | $2.03M | No | Form 4 ↗ |
| 2026-02-12 | 2026-02-11 | MACFARLANE CHARLES S, President & CEO | AAward | +47.7K | $86.43 | $4.12M | No | Form 4 ↗ |
| 2026-02-09 | 2026-02-06 | Wahlund Todd R Chief Financial Officer | FTax | −119.00 | $87.83 | $10.5K | No | Form 4 ↗ |
| 2026-02-09 | 2026-02-06 | Wahlund Todd R, Chief Financial Officer | MExercise | +675.00 | — | — | No | Form 4 ↗ |
| 2026-02-09 | 2026-02-06 | Smestad Jennifer O. VP, General Council & Corp Sec | FTax | −541.00 | $87.83 | $47.5K | No | Form 4 ↗ |
| 2026-02-09 | 2026-02-06 | Smestad Jennifer O., VP, General Council & Corp Sec | MExercise | +1.15K | — | — | No | Form 4 ↗ |
| 2026-02-09 | 2026-02-06 | Abbott John S Sr VP, Manufacturing Platform | FTax | −763.00 | $87.83 | $67.0K | No | Form 4 ↗ |
| 2026-02-09 | 2026-02-06 | Abbott John S, Sr VP, Manufacturing Platform | MExercise | +1.63K | — | — | No | Form 4 ↗ |
| 2026-02-09 | 2026-02-06 | ROGELSTAD TIMOTHY J Sr VP, Electric Platform | FTax | −763.00 | $87.83 | $67.0K | No | Form 4 ↗ |
| 2026-02-09 | 2026-02-06 | ROGELSTAD TIMOTHY J, Sr VP, Electric Platform | MExercise | +1.63K | — | — | No | Form 4 ↗ |
| 2026-02-09 | 2026-02-06 | KNUTSON PAUL L VP, Human Resources | FTax | −279.00 | $87.83 | $24.5K | No | Form 4 ↗ |
| 2026-02-09 | 2026-02-06 | KNUTSON PAUL L, VP, Human Resources | MExercise | +700.00 | — | — | No | Form 4 ↗ |
| 2026-02-09 | 2026-02-06 | MACFARLANE CHARLES S President & CEO | FTax | −4.28K | $87.83 | $376K | No | Form 4 ↗ |
| 2026-02-09 | 2026-02-06 | MACFARLANE CHARLES S, President & CEO | MExercise | +9.13K | — | — | No | Form 4 ↗ |
Insiders — a company’s officers, directors and holders of more than 10% of its stock — must report any trade in that stock to the SEC on a Form 4 within two business days. Each row here is one transaction from those filings.
The transaction code tells you what happened: Purchase (P) and Sale (S) are open-market trades — the ones markets watch most; Award (A) is a granted stock or unit, Option exercise (M) converts options into shares, and Gift (G) is a transfer for no consideration. Awards, exercises and gifts are largely compensation or administrative, not a directional bet.
One caveat on sales: many are made under a Rule 10b5-1 plan scheduled months in advance, so a sale is not automatically a bearish signal. Insider activity is a noisy input — read it alongside the filings, not on its own.
See also OTTR’s full analysis or the market-wide insider trading feed. The tabs above jump to OTTR’s other SEC data.
Source: SEC Form 4 filings for OTTR, parsed from EDGAR. Transaction prices are as reported in the filing — SEC public-domain data, not market quotes. Values are shares × reported price where both are disclosed; grants and gifts often carry no price. A delayed record of what insiders reported, not a live position or a recommendation.
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