| $247M | ||
| $203M | ||
| $40M | ||
| $21M | ||
| $18M | ||
| $18M |
Buys | $265,975 | 3 | 100 |
Sells | $0 | 0 | 0 |
| Vollmer Jason L | CFO | 2 | $161,750 | 0 | $0 | $161,750 |
| KELLEY CHARLES M | director | 1 | $104,225 | 0 | $0 | $104,225 |
MDU Resources Group, Inc. engages in the regulated energy delivery, and construction materials and services businesses in the United States. The company's Electric segment generates, transmits, and distributes electricity for residential, commercial, industrial, and municipal customers in Montana, North Dakota, South Dakota, and Wyoming, as well as operates 3,500 miles of transmission lines and 4,800 miles of distribution lines. Its Natural Gas Distribution segment distributes natural gas for residential, commercial, and industrial customers in Idaho, Minnesota, Montana, North Dakota, Oregon, South Dakota, Washington, and Wyoming; and offers supply-related value-added services. The company's Pipeline segment provides natural gas transportation and underground storage services through a regulated pipeline system primarily in the Rocky Mountain and northern Great Plains regions; and cathodic protection and other energy-related services. Its Construction Materials and Contracting segment mines, processes, and sells construction aggregates; produces and sells asphalt mix; and supplies ready-mixed concrete. This segment is also involved in the sale of cement, finished concrete products, and other building materials and related contracting services. The company's Construction Services segment designs, constructs, and maintains electrical and communication wiring and infrastructure, fire suppression systems, mechanical piping and services; overhead and underground electrical, gas, and communication infrastructure; and manufactures and distributes transmission lines construction equipment. It serves manufacturing, commercial, industrial, transportation, institutional, and renewable and government customers, as well as utilities. The company was founded in 1924 and is headquartered in Bismarck, North Dakota.
Over the last 12 months, insiders at MDU Resources Group, Inc. have bought $265,975 and sold $0 worth of MDU Resources Group, Inc. stock.
On average, over the past 5 years, insiders at MDU Resources Group, Inc. have bought $565,867 and sold $5.29M worth of stock each year.
Highest buying activity among insiders over the last 12 months: Vollmer Jason L (CFO) — $161,750. KELLEY CHARLES M (director) — $104,225.
The last purchase of 5,000 shares for transaction amount of $104,225 was made by KELLEY CHARLES M (director) on 2026‑02‑13.
| 2026-02-13 | KELLEY CHARLES M | director | 5,000 0.0025% | $20.84 | $104,225 | +3.19% | ||
| 2025-09-08 | Vollmer Jason L | CFO | 5,000 0.0024% | $16.07 | $80,375 | +28.89% | ||
| 2025-08-19 | Vollmer Jason L | CFO | 5,000 0.0024% | $16.27 | $81,375 | +26.00% | ||
| 2025-02-10 | JOHNSON DENNIS W | director | 30,000 0.0148% | $16.64 | $499,200 | +4.86% | ||
| 2024-05-07 | Johnson Rob L. | President-WBI Holdings | 36,291.05 0.0178% | $25.46 | $923,970 | +17.12% | ||
| 2024-03-12 | Rosenthal Dale | director | 375 0.0002% | $22.55 | $8,456 | +17.79% | ||
| 2021-06-14 | Sale | EVERIST THOMAS S | director | 17,795 0.0089% | $33.04 | $587,876 | -10.09% | |
| 2021-06-11 | Sale | Kivisto Nicole A | President & CEO-Montana-Dakota | 7,410 0.0037% | $33.26 | $246,449 | -11.13% | |
| 2021-06-09 | Sale | EVERIST THOMAS S | director | 1 <0.0001% | $33.50 | $34 | -11.12% | |
| 2021-06-08 | Sale | EVERIST THOMAS S | director | 50,000 0.0248% | $33.51 | $1.68M | -11.12% | |
| 2021-06-08 | Sale | Kivisto Nicole A | President & CEO-Montana-Dakota | 7,410 0.0037% | $33.51 | $248,322 | -11.12% | |
| 2021-06-07 | Sale | EVERIST THOMAS S | director | 75,000 0.0372% | $33.70 | $2.53M | -11.43% | |
| 2021-06-04 | Sale | EVERIST THOMAS S | director | 70,678 0.0353% | $33.97 | $2.4M | -11.58% | |
| 2020-11-11 | Vollmer Jason L | VP, CFO & Treasurer | 1,000 0.0005% | $24.93 | $24,925 | +27.13% | ||
| 2020-08-20 | SPARBY DAVID M | director | 2,000 0.001% | $22.52 | $45,040 | +28.99% | ||
| 2020-05-18 | Link Margaret A | VP and CIO | 5,000 0.0025% | $21.39 | $106,949 | +16.16% | ||
| 2020-05-14 | JOHNSON DENNIS W | director | 5,000 0.0023% | $18.80 | $93,975 | +25.08% | ||
| 2020-05-14 | Barney David C | President & CEO-Knife River | 1,500 0.0007% | $19.95 | $29,925 | +25.08% | ||
| 2020-05-13 | SPARBY DAVID M | director | 4,000 0.0021% | $20.16 | $80,640 | +30.62% | ||
| 2020-05-13 | Vollmer Jason L | VP, CFO & Treasurer | 1,000 0.0005% | $19.61 | $19,615 | +30.62% |
| Vollmer Jason L | CFO | 344548 0.1649% | $7.36M | 5 | 0 | +15.31% |
| KELLEY CHARLES M | director | 8031 0.0038% | $171,542.16 | 1 | 0 | |
| EVERIST THOMAS S | director | 556526 0.2663% | $11.89M | 1 | 74 | <0.0001% |
| Goodin David L | President & CEO | 271760 0.13% | $5.8M | 6 | 2 | +14.73% |
| PEARCE HARRY J | director | 193600 0.0926% | $4.14M | 1 | 0 | +15.84% |
| JOHNSON DENNIS W | director | 180166 0.0862% | $3.85M | 2 | 4 | +14.97% |
| WHITE MARTIN A | Chairman and CEO | 108038 0.0517% | $2.31M | 0 | 7 | |
| Harp John G | President and CEO | 100000 0.0478% | $2.14M | 0 | 1 | |
| MOSS PATRICIA L | director | 75418 0.0361% | $1.61M | 2 | 1 | +6.6% |
| WILSON JOHN K | director | 60115 0.0288% | $1.28M | 7 | 0 | +5.01% |
| Kivisto Nicole A | President & CEO-Montana-Dakota | 54907 0.0263% | $1.17M | 4 | 2 | +14.52% |
| TIPTON RONALD D | CEO - Montana-Dakota Utilities | 54707 0.0262% | $1.17M | 0 | 2 | |
| NANCE ROBERT L | director | 42824 0.0205% | $914,718.23 | 5 | 0 | +12.94% |
| Johnson Rob L. | President-WBI Holdings | 41934 0.0201% | $895,704.47 | 1 | 0 | +17.12% |
| Schneider William E | EVP-Bakken Development | 38755 0.0185% | $827,806.80 | 0 | 4 | |
| Barney David C | President & CEO-Knife River | 38563 0.0185% | $823,705.68 | 1 | 0 | +25.08% |
| Schwartz Doran N | VP and CFO | 37083 0.0177% | $792,092.88 | 16 | 0 | +7.73% |
| Bietz Steven L | Pres. & CEO - WBI Energy, Inc. | 34704 0.0166% | $741,268.73 | 0 | 4 | |
| CHRISTOPHERSON CATHLEEN M | Vice President - Corporate Com | 33309 0.0159% | $711,480.24 | 0 | 3 | |
| WELLS JAMES KENT | President & CEO-Fidelity E&P | 27743 0.0133% | $592,590.48 | 1 | 0 | +0.18% |
| ROBINSON WARREN L | EVP & CFO | 25896 0.0124% | $553,138.56 | 0 | 3 | |
| RAILE VERNON A | EVP, Treas. & CFO | 24808 0.0119% | $529,898.69 | 0 | 5 | |
| Holaday A Bart | director | 24050 0.0115% | $513,708.00 | 2 | 0 | +3.54% |
| LOBLE LESTER H II | EVP, Gen. Counsel & Secretary | 23670 0.0113% | $505,591.20 | 0 | 1 | |
| LEWIS RICHARD H | director | 22700 0.0109% | $484,872.00 | 0 | 1 | |
| SPARBY DAVID M | director | 20807 0.01% | $444,437.52 | 4 | 0 | +19.42% |
| Rosenthal Dale | director | 16499 0.0079% | $352,418.64 | 1 | 0 | +17.79% |
| NORLAND CYNTHIA J | VP - Administration | 14757 0.0071% | $315,209.52 | 1 | 2 | <0.0001% |
| Fagg Karen B | director | 14119 0.0068% | $301,581.84 | 1 | 0 | +16.95% |
| Ryan Edward A | director | 14190 0.0068% | $303,098.40 | 1 | 0 | +12.76% |
| SANDNESS PAUL K | General Counsel and Secretary | 10391 0.005% | $221,950.44 | 3 | 1 | +12.84% |
| Imsdahl Bruce T | President & CEO, Mont.-Dakota | 6498 0.0031% | $138,797.28 | 0 | 2 | |
| Stumpf John P | VP - Strategic Planning | 6468 0.0031% | $138,158.72 | 1 | 1 | +7.45% |
| CASTLEBERRY JOHN K | EVP - Administration | 6230 0.003% | $133,071.52 | 0 | 8 | |
| Knudson Thomas C | director | 5450 0.0026% | $116,412.00 | 1 | 0 | +16.95% |
| Connors William R | VP - Renewable Resources | 5300 0.0025% | $113,208.00 | 2 | 2 | +21.91% |
| Link Margaret A | VP and CIO | 5000 0.0024% | $106,800.00 | 1 | 0 | +16.16% |
| Morehouse Kenneth Frank | President & CEO-Montana-Dakota | 4459 0.0021% | $95,244.24 | 0 | 1 | |
| WOOD ROBERT E | SVP-Gov.& PA | 3553 0.0017% | $75,892.08 | 0 | 3 | |
| Barth Stephanie A | VP, CAO & Controller | 3219 0.0015% | $68,765.44 | 2 | 0 | +12.44% |
| Mahowald Douglass A | Treasurer & Asst. Secretary | 1165 0.0006% | $24,892.40 | 0 | 3 | |
| HILDESTAD TERRY D | President and CEO | 0 0% | $0 | 1 | 4 | +18.64% |
$172,232,855 | 481 | 12.18% | $800.51M | |
$119,496,970 | 138 | 4.50% | $519.56M | |
$8,827,617 | 96 | 36.18% | $148.29M | |
$26,999,442 | 88 | 8.31% | $3.92B | |
MDU Resources Group, Inc. (MDU) | $7,018,155 | 71 | 10.82% | $4.46B |
$654,999,221 | 66 | 38.20% | $4.98B | |
$2,333,668 | 59 | -32.09% | $28.63M | |
$8,399,392 | 53 | 21.68% | $168.54M | |
$7,438,470 | 29 | 7.63% | $790.98M | |
$585,989 | 17 | 37.97% | $159.93M | |
$3,478,600 | 15 | 9.47% | $80.2B | |
$1,391,846 | 13 | 13.20% | $135.58B | |
$873,306 | 8 | 20.58% | $10.36B | |
$310,113 | 4 | 12.03% | $491.56M | |
$6,316,863 | 1 | -16.92% | $575.46M | |
$966,900 | 1 | 37.56% | $5.2B |
| Increased Positions | 230 | +52.63% | 46M | +26.97% |
| Decreased Positions | 180 | -41.19% | 20M | -11.81% |
| New Positions | 68 | New | 8M | New |
| Sold Out Positions | 64 | Sold Out | 9M | Sold Out |
| Total Postitions | 487 | +11.44% | 195M | +15.16% |
| Blackrock, Inc. | $512,362.00 | 12.64% | 25.79M | +768,927 | +3.07% | 2025-09-30 |
| Vanguard Group Inc | $462,126.00 | 11.4% | 23.26M | -40,798 | -0.17% | 2025-09-30 |
| Dimensional Fund Advisors Lp | $194,013.00 | 4.79% | 9.76M | +339,573 | +3.6% | 2025-09-30 |
| Barrow Hanley Mewhinney & Strauss Llc | $181,377.00 | 4.47% | 9.13M | +348,762 | +3.97% | 2025-09-30 |
| State Street Corp | $135,918.00 | 3.35% | 6.84M | +291,663 | +4.45% | 2025-09-30 |
| River Road Asset Management, Llc | $105,112.00 | 2.59% | 5.29M | +4M | +249.56% | 2025-09-30 |
| Corvex Management Lp | $83,119.00 | 2.05% | 4.18M | 0 | 0% | 2025-09-30 |
| Morgan Stanley | $72,708.00 | 1.79% | 3.66M | +82,433 | +2.31% | 2025-09-30 |
| Geode Capital Management, Llc | $67,434.00 | 1.66% | 3.39M | -33,256 | -0.97% | 2025-09-30 |
| Macquarie Group Ltd | $63,958.00 | 1.58% | 3.22M | -146,355 | -4.35% | 2025-09-30 |