As of the latest Form 4 filed May 12, 2026.
What NorthWestern 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 21 most recent filings for NWE.
| Filed | Trade date | Insider | Transaction | Shares | Price | Value | 10b5-1 | Filing |
|---|---|---|---|---|---|---|---|---|
| 2026-05-12 | 2026-05-11 | Yingling Jeffrey W. Director | AAward | +569.00 | $65.94 | $37.5K | No | Form 4 ↗ |
| 2026-05-12 | 2026-05-11 | HORSFALL JAN ROBERT Director | AAward | +569.00 | $65.94 | $37.5K | No | Form 4 ↗ |
| 2026-04-07 | 2026-04-07 | Edwards Sherina M. Director | AAward | +569.00 | $65.94 | $37.5K | No | Form 4 ↗ |
| 2026-04-07 | 2026-04-07 | Ide Britt E Director | AAward | +569.00 | $65.94 | $37.5K | No | Form 4 ↗ |
| 2026-04-07 | 2026-04-07 | Larson Kent T Director | AAward | +569.00 | $65.94 | $37.5K | No | Form 4 ↗ |
| 2026-04-07 | 2026-04-07 | Goodin David L Director | AAward | +569.00 | $65.94 | $37.5K | No | Form 4 ↗ |
| 2026-04-07 | 2026-04-07 | Sullivan Linda G Director | AAward | +834.00 | $65.94 | $55.0K | No | Form 4 ↗ |
| 2026-04-07 | 2026-04-07 | YAZDI MAHVASH Director | AAward | +569.00 | $65.94 | $37.5K | No | Form 4 ↗ |
| 2026-02-04 | 2026-02-03 | Yingling Jeffrey W. Director | AAward | +581.00 | $64.54 | $37.5K | No | Form 4 ↗ |
| 2026-02-04 | 2026-02-03 | HORSFALL JAN ROBERT Director | AAward | +581.00 | $64.54 | $37.5K | No | Form 4 ↗ |
| 2026-01-26 | 2026-01-22 | Berzina Jeffrey B. Controller | FTax | −124.00 | $64.54 | $8.00K | No | Form 4 ↗ |
| 2026-01-23 | 2026-01-22 | LaFave Bleau VP - Bus Dvlpmt & Asset Mgmt | FTax | −89.00 | $64.54 | $5.74K | No | Form 4 ↗ |
| 2026-01-23 | 2026-01-22 | Merkel Jason VP - Distribution | FTax | −206.00 | $64.54 | $13.3K | No | Form 4 ↗ |
| 2026-01-23 | 2026-01-22 | Vold Jeanne VP - Technology | FTax | −223.00 | $64.54 | $14.4K | No | Form 4 ↗ |
| 2026-01-23 | 2026-01-22 | Lail Crystal Dawn VP and CFO | FTax | −808.00 | $64.54 | $52.1K | No | Form 4 ↗ |
| 2026-01-23 | 2026-01-22 | Cashell Michael R VP - Transmission | FTax | −381.00 | $64.54 | $24.6K | No | Form 4 ↗ |
| 2026-01-23 | 2026-01-22 | Schroeppel Bobbi L VP - HR, Cust Care, Corp Comm | FTax | −327.00 | $64.54 | $21.1K | No | Form 4 ↗ |
| 2026-01-23 | 2026-01-22 | BIRD BRIAN B President and CEO | FTax | −2.40K | $64.54 | $155K | No | Form 4 ↗ |
| 2026-01-20 | 2026-01-15 | Heim Shannon VP and General Counsel | FTax | −442.00 | $64.54 | $28.5K | No | Form 4 ↗ |
| 2026-01-20 | 2026-01-15 | Hines John D VP - Energy Supply & MT Gov | FTax | −84.00 | $64.54 | $5.42K | No | Form 4 ↗ |
| 2025-12-19 | 2025-12-19 | BIRD BRIAN B President and CEO | FTax | −3.13K | $67.84 | $212K | 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 NWE’s full analysis or the market-wide insider trading feed. The tabs above jump to NWE’s other SEC data.
Source: SEC Form 4 filings for NWE, 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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