← United States · Coverage record
US · SEC FORM 4
MDU RESOURCES GROUP INC
MDU · NYSE · CIK 0000067716 · Utilities · Utilities—Regulated Gas
INSIDER SIGNAL
0 qualifying P purchase groups
in the current 180-day scoring window
4 Form 4 transaction lines observed in the same window
0 sales · 4 option, withholding, award, gift or other lines
WHY NO ACTIVE SIGNAL?
Score anatomy
No score is calculated because there is no qualifying purchase in the active window. Unavailable inputs are not treated as zero or as a bearish signal.
Why is there no score?
- No qualifying open-market purchase supplies cluster, size, role, recency or conviction inputs.
- Sales and other Form 4 activity remain visible as context and do not create a negative score.
Sales and other Form 4 activity are shown separately and do not create a negative buy signal. Absence of buying is not scored as bearish.
Insider activity timeline
Owner lanes show the latest 180 days. Symbol shape identifies the transaction type; sales remain context only.
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Purchase breadth, concentration & cluster buying
These modules activate when qualifying purchases enter the 180-day research window.
SIGNAL HISTORY
Scores are archived only when the company qualifies for a published US buy-signal snapshot. Last qualifying purchase: 2026-02-13 · KELLEY CHARLES M.
Recent Form 4 activity
P is an open-market or private purchase. S is a sale. M, F, A and G usually describe exercises, tax withholding, awards and gifts. These categories remain visually separate.
Market context
Market context has not been captured for this ticker yet. The daily market-context job processes the US universe in rotating batches.
Short interest
Short interest is external context reported to FINRA by broker-dealers. It does not affect the Insider Signal.
- Shares short
- 18,814,289
- Previous report
- 17,086,955
- Avg daily volume
- 2,326,289
- Days to cover
- 8.1
FINRA settlement date: 2026-09-30 · Captured 2026-10-12 · FINRA equity short interest ↗. A share count, published about a week after each of two settlement dates a month; not a percentage of shares outstanding.
Historical equity purchases
Qualifying code P transactions in the local Form 4 history, including purchases outside the current signal window.
| Transaction date | Reporting owner | Type | Security | Shares | Avg. price | Approx. value | Source |
|---|---|---|---|---|---|---|---|
| 2026-02-13 | KELLEY CHARLES M | Purchase (P) | Common Stock | 5,000 | USD 20.85 | USD 104,250 | SEC filing ↗ |
| 2025-09-08 | Vollmer Jason L | Purchase (P) | Common Stock | 5,000 | USD 16.08 | USD 80,400 | SEC filing ↗ |
| 2025-08-19 | Vollmer Jason L | Purchase (P) | Common Stock | 5,000 | USD 16.28 | USD 81,400 | SEC filing ↗ |
| 2025-02-10 | JOHNSON DENNIS W | Purchase (P) | Common Stock | 30,000 | USD 16.64 | USD 499,200 | SEC filing ↗ |
| 2024-05-07 | Johnson Rob L. | Purchase (P) | Common Stock - 401(k) | 36,291 | USD 25.46 | USD 923,970 | SEC filing ↗ |
| 2024-03-12 | Rosenthal Dale | Purchase (P) | Common Stock | 375 | USD 22.55 | USD 8,456 | SEC filing ↗ |
| 2020-11-11 | Vollmer Jason L | Purchase (P) | Common Stock | 1,000 | USD 24.93 | USD 24,930 | SEC filing ↗ |
| 2020-08-20 | SPARBY DAVID M | Purchase (P) | Common Stock | 2,000 | USD 22.52 | USD 45,040 | SEC filing ↗ |
| 2020-05-18 | Link Margaret A | Purchase (P) | Common Stock | 5,000 | USD 21.39 | USD 106,950 | SEC filing ↗ |
| 2020-05-14 | JOHNSON DENNIS W | Purchase (P) | Common Stock | 5,000 | USD 18.80 | USD 94,000 | SEC filing ↗ |
| 2020-05-14 | Barney David C | Purchase (P) | Common Stock | 1,500 | USD 19.95 | USD 29,925 | SEC filing ↗ |
| 2020-05-13 | Vollmer Jason L | Purchase (P) | Common Stock | 1,000 | USD 19.62 | USD 19,620 | SEC filing ↗ |
| 2020-05-13 | SPARBY DAVID M | Purchase (P) | Common Stock | 4,000 | USD 20.16 | USD 80,640 | SEC filing ↗ |
| 2020-05-12 | Barth Stephanie A | Purchase (P) | Common Stock | 1,278 | USD 21.07 | USD 26,927 | SEC filing ↗ |
| 2020-05-12 | Goodin David L | Purchase (P) | Common Stock | 5,000 | USD 20.16 | USD 100,800 | SEC filing ↗ |
Form 4 evidence
29 transaction lines in the latest 365-day window; 273 in local history.
| Date | Owner | Type | Security | Shares | Avg. price | Approx. value | Source |
|---|---|---|---|---|---|---|---|
| 2026-09-30 | Dosch Vernon A. | Award / grant (A) | Common Stock | 1,462 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-09-30 | DURKIN MARIAN M | Award / grant (A) | Common Stock | 172 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-06-30 | Dosch Vernon A. | Award / grant (A) | Common Stock | 1,293 | USD 0.00 | USD 0 | SEC filing ↗ |
Show recent Form 4 evidence (29 grouped rows)
| Date | Owner | Type | Security | Shares | Avg. price | Approx. value | Source |
|---|---|---|---|---|---|---|---|
| 2026-09-30 | Dosch Vernon A. | Award / grant (A) | Common Stock | 1,462 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-09-30 | DURKIN MARIAN M | Award / grant (A) | Common Stock | 172 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-06-30 | Dosch Vernon A. | Award / grant (A) | Common Stock | 1,293 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-06-30 | DURKIN MARIAN M | Award / grant (A) | Common Stock | 152 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-02-18 | Vollmer Jason L | Tax withholding (F) | Common Stock | 36,766 | USD 20.36 | USD 748,556 | SEC filing ↗ |
| 2026-02-18 | Sievert Stephanie A | Tax withholding (F) | Common Stock | 10,438 | USD 20.36 | USD 212,518 | SEC filing ↗ |
| 2026-02-18 | Senger Garret | Tax withholding (F) | Common Stock | 8,167 | USD 20.36 | USD 166,280 | SEC filing ↗ |
| 2026-02-18 | Kivisto Nicole A | Tax withholding (F) | Common Stock | 35,668 | USD 20.36 | USD 726,200 | SEC filing ↗ |
| 2026-02-18 | Jones Anne M | Tax withholding (F) | Common Stock | 12,010 | USD 20.36 | USD 244,524 | SEC filing ↗ |
| 2026-02-18 | Johnson Rob L. | Tax withholding (F) | Common Stock | 10,630 | USD 20.36 | USD 216,427 | SEC filing ↗ |
| 2026-02-17 | Vollmer Jason L | Award / grant (A) | Common Stock | 15,229 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-02-17 | Sievert Stephanie A | Award / grant (A) | Common Stock | 4,544 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-02-17 | Senger Garret | Award / grant (A) | Common Stock | 6,920 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-02-17 | Kivisto Nicole A | Award / grant (A) | Common Stock | 45,037 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-02-17 | Jones Anne M | Award / grant (A) | Common Stock | 5,523 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-02-17 | Johnson Rob L. | Award / grant (A) | Common Stock | 5,830 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-02-17 | Foti Anthony Donald | Award / grant (A) | Common Stock | 8,161 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-02-17 | Boese Dyke A. | Award / grant (A) | Common Stock | 3,702 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-02-13 | KELLEY CHARLES M | Purchase (P) | Common Stock | 5,000 | USD 20.85 | USD 104,250 | SEC filing ↗ |
| 2025-12-31 | Dosch Vernon A. | Award / grant (A) | Common Stock | 1,394 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2025-12-31 | DURKIN MARIAN M | Award / grant (A) | Common Stock | 164 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2025-11-13 | Patel Priti Rashmikant | Award / grant (A) | Common Stock | 4,849 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2025-11-13 | Miller Tammy J | Award / grant (A) | Common Stock | 3,031 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2025-11-13 | KELLEY CHARLES M | Award / grant (A) | Common Stock | 3,031 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2025-11-13 | Jaeger Douglas W. | Award / grant (A) | Common Stock | 7,274 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2025-11-13 | JOHNSON DENNIS W | Award / grant (A) | Common Stock | 7,779 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2025-11-13 | Dosch Vernon A. | Award / grant (A) | Common Stock | 7,274 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2025-11-13 | DURKIN MARIAN M | Award / grant (A) | Common Stock | 7,274 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2025-11-13 | ANDERSON DARREL T | Award / grant (A) | Common Stock | 8,082 | USD 0.00 | USD 0 | SEC filing ↗ |
Multiple price lines in one filing are grouped and share-weighted. Price and value are blank when a grouped filing line lacks price evidence.
Snapshot & identity
| Snapshot date | 2026-10-18 |
|---|---|
| Ranking version | US-v1.2 |
| Data quality | PASS ELIGIBLE · — |
| Ticker | MDU |
| CIK | 0000067716 |
| Sector | Utilities |
| Industry | Utilities—Regulated Gas Yahoo Finance |
| SEC SIC | 4924 Natural Gas Distribution |
| Exchange | NYSE |
Data coverage
| Local Form 4 history | 273 transaction lines from 2020-02-13 to 2026-09-30 18 P purchase lines · 7 S sale lines · 248 other lines |
|---|---|
| SEC company submissions | Open SEC filings ↗ |
Local ledger as of 2026-10-18. Mapping status is an audit field and does not erase SEC filing evidence.