// company-profile
Northwestern Corp
NWESectorElectric & Other Services CombinedInc.DEFilings2Insiders2
// api This Northwestern Corp insider-trading data is served live by the Form4API insider trading API. Get the same data via API.
// activity-summary
No insider transactions in the last 30 days.
// 90-day insight
Over the last 90 days, Northwestern Corp insiders bought $318K across 8 transactions with no open-market sales.
- Most active insider: Sullivan Linda G with 1 transaction totaling $55K.
- Largest single purchase: $55K by Sullivan Linda G on Apr 7, 2026.
Activity skews bullish — buys outpace sales.
Institutional Ownership
Top 13F-HR holders of Northwestern Corp as of 2026-03-31
Total reported AUM
$3.57B
QoQ change
+12.3%
Reporting period
2026-03-31
#1
BlackRock, Inc.
CIK 2012383
$328.4M
5.0M shares
#2
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
$183.5M
2.8M shares
#3
STATE STREET CORP
CIK 93751
$154.0M
2.3M shares
Data source: SEC Form 13F-HR filings. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| May 11, 2026 | HORSFALL JAN ROBERT | NWE | Award | 569 | $65.94 | $38K |
| May 11, 2026 | Yingling Jeffrey W. | NWE | Award | 569 | $65.94 | $38K |
| Apr 7, 2026 | Goodin David L | NWE | Award | 569 | $65.94 | $38K |
| Apr 7, 2026 | Larson Kent T | NWE | Award | 569 | $65.94 | $38K |
| Apr 7, 2026 | Sullivan Linda G | NWE | Award | 834 | $65.94 | $55K |
45 more transactions hidden
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