SEC Form 4
MDU Resources Group, Inc. (MDU) insider trading
In the 12 months to Oct 24, 2026, one MDU insider reported open-market purchases of $104.2K across 1 filing; no open-market sales were filed.
Latest filing · Last 12 months · Source: SEC EDGAR · How we count
- Open-market sales
- $0
- 0 filings · 0 insiders
- Open-market purchases
- $104.2K
- 1 filing · Charles M. Kelley, Director
Who traded MDU, and when
- Purchase
MDU daily close from Oct 24, 2025 to Oct 23, 2026, between $18.39 and $22.80, last $19.22. 0 sale and 1 purchase filings by 1 insider, marked at their filing dates. Charles M. Kelley, Director: bought $104.2K across 1 filing, first filed Feb 17, 2026, last Feb 17, 2026.
Largest mark · tap a row for others
Charles M. Kelley · Director
Purchase $104,225
5,000 shares at $20.85 avg
Filed Feb 17, 2026 · traded Feb 13
Close on filing date $20.27
Charles M. Kelley · Director
Director
$104.2K boughtHas MDU Resources Group, Inc.'s CEO sold stock?
No. Nicole A. Kivisto (CEO) made no open-market sales filed as CEO in the last 12 months.
Open-market trades
1 filing in the last 12 months| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
|---|---|---|---|---|---|---|
| Charles M. Kelley | Director | — | $104.2K | 1 | — |
| Filed | Insider | Type | Shares | Avg price | Value | Held after | Source |
|---|---|---|---|---|---|---|---|
traded | Charles M. Kelley Director | Purchase | 5,000 | $20.85 | $104.2K | 8,031 |
GET /stocks/filings/vX/form-4?tickers=MDU&filing_date.gte=2025-10-24&sort=filing_date.desc&limit=500{
"status": "OK",
"results": [
{
"tickers": [
"MDU"
],
"issuer_cik": "0000067716",
"owner_cik": "0001741956",
"accession_number": "0001225208-26-001965",
"form_type": "4",
"filing_date": "2026-02-17",
"period_of_report": "2026-02-13",
"issuer_name": "MDU RESOURCES GROUP INC",
"issuer_trading_symbol": "MDU",
"owner_name": "KELLEY CHARLES M",
"is_director": true,
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Common Stock",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-02-13",
"transaction_code": "P",
"equity_swap_involved": false,
"transaction_shares": 5000,
"transaction_price_per_share": 20.845,
"transaction_acquired_disposed": "A",
"shares_owned_following_transaction": 8031,
"transaction_value": 104225,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F1",
"description": "Mr. Kelley purchased these shares in an open market transaction."
}
]
}
]
}
// trimmed to 1 resultsThe response includes every Form 4 record; this page keeps open-market purchases and sales on common stock and removes duplicate joint-filer rows.
Other insider activity (not market trades) · 30 records
- Tax withholding6 records
- Grants and awards24 records
Reported on Form 4 but not purchases or sales in the market, so not counted in the totals above.
Build this yourself
This page joins two Massive endpoints: Form 4 filings and daily prices. Ask an agent to watch for new filings:
Using the Massive API (massive.com/docs/llms.txt), check Form 4 filings for MDU every day with transaction_code=P and tell me when an insider files an open-market purchase, with their role, shares, price and the filing link.
How to read this page
- Open-market purchase or sale
- A buy or sell of the company's stock at market price. Grants, option exercises, shares withheld for tax, gifts and employee stock plan purchases are listed separately and not counted.
- Filing date
- Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.