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MDU Resources Group stock timeline
A year of the price with every insider trade, planned sale, earnings report and material 8-K marked
252 sessions−7.1% to $18.63
MDU Resources Group (MDU) stock fell 7% over the last 252 sessions, to $18.63. On the way it reported 5 quarters, its insiders filed 1 open-market trade, and the company filed 5 material 8-Ks. Each is marked on the price and listed with what the stock did next.
Each mark, and what followed
| Date | Kind | What | Next session | 5 sessions | 21 sessions |
|---|---|---|---|---|---|
| Nov 5, 2026 | Earnings | Earnings: missed the EPS estimate by -18.1% | −6.7% (−2.2% vs SPY) | — | — |
| Aug 6, 2026 | Earnings | Earnings: beat the EPS estimate by 3.3% | +3.6% (+3.8% vs SPY) | +2.5% (+2.1% vs SPY) | −1.4% (−1.9% vs SPY) |
| May 13, 2026 | 8-K | Directors and officers: departures, appointments, pay | −0.2% (−1.0% vs SPY) | −2.8% (−2.6% vs SPY) | −6.2% (−6.2% vs SPY) |
| May 7, 2026 | Earnings | Earnings: missed the EPS estimate by -2.4% | +0.7% (+1.0% vs SPY) | +1.4% (+0.2% vs SPY) | −4.3% (−4.9% vs SPY) |
| Feb 13, 2026 | Insider buy | Kelley Charles M bought $104K | 0.0% (−0.1% vs SPY) | −2.8% (−4.0% vs SPY) | −0.3% (+1.6% vs SPY) |
| Feb 5, 2026 | Earnings | Earnings: beat the EPS estimate by 2.7% | −4.2% (−3.0% vs SPY) | −2.5% (−3.3% vs SPY) | −0.3% (+1.8% vs SPY) |
| Jan 16, 2026 | 8-K | Material definitive agreement | −0.7% (+1.3% vs SPY) | −1.0% (−1.1% vs SPY) | −1.5% (−0.7% vs SPY) |
| Dec 29, 2025 | 8-K | Material definitive agreement | −0.2% (−0.1% vs SPY) | +0.8% (+0.2% vs SPY) | +3.7% (+2.8% vs SPY) |
| Dec 12, 2025 | 8-K | Material definitive agreement | −0.2% (0.0% vs SPY) | −2.2% (−2.3% vs SPY) | +3.7% (+2.1% vs SPY) |
| Dec 5, 2025 | 8-K | Material definitive agreement | +0.5% (+0.8% vs SPY) | +2.4% (+3.0% vs SPY) | +2.9% (+2.1% vs SPY) |
| Nov 6, 2025 | Earnings | Earnings: missed the EPS estimate by -15.9% | +4.6% (+5.7% vs SPY) | +7.3% (+6.4% vs SPY) | −2.2% (−3.4% vs SPY) |
Insiders’ record here
In the year on the chart, MDU Resources Group's insiders reported 1 open-market buy ($104K) and 0 sales ($0). Of the 1 old enough to score, 0 were followed by the stock doing what the trade implied over the next 63 sessions (beating SPY after a buy, lagging it after a sale); the median excess return after a buy was −2.0% and after a sale —.
Across the whole universe (19,782 scored trades), insider buys beat the market 46% of the time and sales were followed by a lagging stock 61% of the time; buys of $1M or more 39%. Every pattern →
What this kind of 8-K usually did
| Item | 8-Ks | Next session, median | Up next session | 21 sessions, median | Typical size |
|---|---|---|---|---|---|
| 1.01 Material definitive agreement | 23,525 | 0.0% | 51% | +1.0% | ±1.4% |
| 2.01 Completed acquisition or disposition | 2,671 | +0.1% | 52% | +1.2% | ±1.6% |
| 2.03 New debt or off-balance-sheet obligation | 13,268 | 0.0% | 50% | +1.2% | ±1.3% |
| 5.02 Directors and officers: departures, appointments, pay | 39,174 | −0.1% | 48% | +0.7% | ±1.4% |
Across every company in the move-odds universe, measured from the close before the filing. Every 8-K item ranked →
Report card: every quarter against the estimate → MDU Resources Group: every quarter → Live insider trades →
Prices are daily closes; filings and trades are as filed with the SEC (Form 4 within two business days of the trade, 8-K within four of the event). Moves after a mark are the stock's close-to-close change and the same for SPY; they describe the record, not what the next one will do. Not investment advice.