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JV

Jason L. Vollmer

MDU
CFO · MDU RESOURCES GROUP INC · CIK 0001626019
FILING MIX · LIFETIME73%/27%
BUYS
19
SELLS
7
TOTAL VALUE
$4.46M
COMPANIES
1
ACTIVE SINCE
Feb 2020
HOLDINGS NOW
324,976
AVG SELL PX
$21.46
TRADE KIND
SHOWING 26 / 26
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
7 backtested trades · 8 horizons · 4 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Jason L. Vollmer, measured at 8 horizons from 7 days to 2 years. Deduped per economic event so co-filings count once. Excess return = trade return minus SPY return over the same window.
HORIZONTRADESWIN RATEINSIDER RETURNSPY RETURNMEAN EXCESSMEDIAN EXCESST-STAT
7d7+28.57%-6.42%-2.45%-3.98%-0.93%—
14d7+57.14%-5.89%-3.21%-2.69%+1.26%—
30d7+57.14%-0.28%+3.11%-3.38%-2.69%—
60d7+71.43%+5.49%+6.77%-1.28%+2.35%—
90d7+71.43%+10.73%+12.14%-1.42%+1.03%—
180d7+71.43%+21.77%+17.96%+3.81%+20.27%—
1y7(2 pending)+100.00%+31.23%+39.89%-8.66%-12.23%—
2y7(2 pending)+100.00%+21.16%+39.75%-18.59%-3.73%—
How to read this: Insider Returnis the average raw return of the filer's trades over the horizon. SPY Return is what SPY did over those same windows — reference only, not a comparison. The headline alpha number is Mean Excess = Insider − SPY; green means the filer beat SPY, red means they trailed it. Win rate is the share of individual trades where the filer beat SPY. T-statvalues above 2 mean the alpha is unlikely to be chance given the sample size. "Pending" counts trades where the horizon hasn't elapsed yet; their stats are not included in the row average.
Holdings over time
MDU · 324,976.397 shares · as of Feb 18, 2026
090,780181,559272,339363,118202120222023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY ● SELL ●
2020
2020
2020
2020
2021
2021
2021
2021
2022
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
FLOW · 19 buys / 7 sellsCOVERAGE · 25 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
MDU
MDU RESOURCES GROUP INC
SALE
CFO
36,766$20.36$748.6K324,976.397Feb 18, 2026Feb 19, 2026 ↗View →
MDU
MDU RESOURCES GROUP INC
PURCHASEGRANT
Stock grant
15,229——361,742.397Feb 17, 2026Feb 19, 2026 ↗View →
MDU
MDU RESOURCES GROUP INC
PURCHASE
CFO
5,000$16.08$80.4K344,548.197Sep 8, 2025Sep 9, 2025 ↗View →
MDU
MDU RESOURCES GROUP INC
PURCHASE
CFO
5,000$16.28$81.4K339,548.197Aug 19, 2025Aug 19, 2025 ↗View →
MDU
MDU RESOURCES GROUP INC
PURCHASEGRANT
Stock grant
16,700——363,118.327Feb 12, 2025Feb 14, 2025 ↗View →
MDU
MDU RESOURCES GROUP INC
SALE
CFO
30,429$16.83$512.1K332,689.327Feb 12, 2025Feb 14, 2025 ↗View →
MDU
MDU RESOURCES GROUP INC
SALE
VP & CFO
12,067$20.85$251.6K215,614.211Feb 15, 2024Feb 16, 2024 ↗View →
MDU
MDU RESOURCES GROUP INC
PURCHASEGRANT
Stock grant
56,459——227,681.211Feb 15, 2024Feb 16, 2024 ↗View →
MDU
MDU RESOURCES GROUP INC
PURCHASEGRANT
Stock grant
19,064——118,489.965May 31, 2023Jun 1, 2023 ↗View →
MDU
MDU RESOURCES GROUP INC
PURCHASEGRANT
Stock grant
13,771——132,260.965May 31, 2023Jun 1, 2023 ↗View →
MDU
MDU RESOURCES GROUP INC
PURCHASEGRANT
Stock grant
31,574——88,937.31Feb 16, 2023Feb 21, 2023 ↗View →
MDU
MDU RESOURCES GROUP INC
PURCHASEGRANT
Stock grant
16,581$31.16$516.7K105,518.31Feb 16, 2023Feb 21, 2023 ↗View →
MDU
MDU RESOURCES GROUP INC
SALE
VP & CFO
6,486$31.16$202.1K99,032.31Feb 16, 2023Feb 21, 2023 ↗View →
MDU
MDU RESOURCES GROUP INC
PURCHASEGRANT
Stock grant
26,795$27.73$743.0K52,962.59Feb 17, 2022Feb 22, 2022 ↗View →
MDU
MDU RESOURCES GROUP INC
SALE
VP & CFO
10,652$27.73$295.4K42,310.59Feb 17, 2022Feb 22, 2022 ↗View →
MDU
MDU RESOURCES GROUP INC
PURCHASEGRANT
Stock grant
6,957——56,017.59Feb 17, 2022Feb 28, 2022 ↗View →
MDU
MDU RESOURCES GROUP INC
PURCHASEGRANT
Stock grant
6,750——49,060.59Feb 11, 2021Feb 28, 2022 ↗View →
MDU
MDU RESOURCES GROUP INC
PURCHASEGRANT
Stock grant
23,980$27.35$655.9K35,007.706Feb 11, 2021Feb 16, 2021 ↗View →
MDU
MDU RESOURCES GROUP INC
SALE
VP & CFO
9,551$27.35$261.2K25,456.706Feb 11, 2021Feb 16, 2021 ↗View →
MDU
MDU RESOURCES GROUP INC
PURCHASE
VP, CFO & Treasurer
600$24.93$15.0K10,538.12Nov 11, 2020Nov 12, 2020 ↗View →
MDU
MDU RESOURCES GROUP INC
PURCHASE
VP, CFO & Treasurer
400$24.93$10.0K10,938.12Nov 11, 2020Nov 12, 2020 ↗View →
MDU
MDU RESOURCES GROUP INC
PURCHASE
VP, CFO & Treasurer
1,000$19.62$19.6K9,753.511May 13, 2020May 14, 2020 ↗View →
MDU
MDU RESOURCES GROUP INC
PURCHASE
VP, CFO & Treasurer
200$27.32$5.5K8,668.834Mar 9, 2020Mar 10, 2020 ↗View →
MDU
MDU RESOURCES GROUP INC
PURCHASE
VP, CFO & Treasurer
1,000$27.31$27.3K8,468.834Mar 9, 2020Mar 10, 2020 ↗View →
MDU
MDU RESOURCES GROUP INC
PURCHASEGRANT
Stock grant
899$31.63$28.4K7,751.834Feb 13, 2020Feb 18, 2020 ↗View →
MDU
MDU RESOURCES GROUP INC
SALE
VP, CFO & Treasurer
283$31.63$9.0K7,468.834Feb 13, 2020Feb 18, 2020 ↗View →
Other insiders · MDU
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About this filer
CIK 0001626019
ROLE
CFO
PRIMARY
MDU
COMPANIES
1
ACTIVE SINCE
Feb 2020
MARKETPEEL · /INSIDER/0001626019DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
FREE · DAILY · 6 AM ET

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