Stocks › MDU
MDU RESOURCES GROUP INC
MDU·NYSE·
United States·USD
United States·USD$18.95
+0.26 (+1.39%)
Close · Oct 6, 2026 · Close Prices from Tiingo.com
MDU
MDU RESOURCES GROUP INC · NYSE
Nasdaq 100S&P 500
Filings
Default90D1Y5YALL
MDUS&P 500 (rebased)
Congress BuyCongress SellInsider BuyInsider SellForm 1448-K ResultsLobbying
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Daily closes, adjusted for splits and dividends · Close Prices from Tiingo.comHover a marker, every one is a filing · move across the line for the crosshair
Congressional Trades
Recent trades of MDU by members of U.S. Congress · 3 on record
| Politician | Stock | Type | Filed | Traded | |
|---|---|---|---|---|---|
 John HoevenSenate · R · ND |
MDUMDU RESOURCES GROUP INC · Stock |
Sale $100,001 - $250,000 |
Dec 7, 2016 | Nov 23, 2016 | Filing ↗ |
| John HoevenSenate · R · ND |
MDUMDU RESOURCES GROUP INC · Stock |
Purchase $100,001 - $250,000 |
May 16, 2016 | Mar 20, 2015 | Filing ↗ |
| John HoevenSenate · R · ND |
MDUMDU RESOURCES GROUP INC · Stock |
Purchase $100,001 - $250,000 |
Apr 6, 2015 | Mar 20, 2015 | Filing ↗ |
Whale Activity
Position changes in MDU reported for 2026-06-30 by 10 tracked institutional filers
- Increased8
- New0
- Held0
- Decreased1
- Closed0
- No prior filing1
| Filer | Shares | Value | Change |
|---|---|---|---|
| BlackRock, Inc. | 27.4M | $580.1M | increased |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 12.7M | $269.2M | increased |
| VANGUARD CAPITAL MANAGEMENT LLC | 9.4M | $199.7M | increased |
| CITADEL ADVISORS LLC | 1.9M | $40.5M | increased |
| RENAISSANCE TECHNOLOGIES LLC | 957.1K | $20.3M | increased |
| TWO SIGMA INVESTMENTS, LP | 898.5K | $19.1M | increased |
| MILLENNIUM MANAGEMENT LLC | 624.8K | $13.3M | increased |
| D. E. Shaw & Co., Inc. | 450.8K | $9.6M | decreased |
| Bridgewater Associates, LP | 80.7K | $1.7M | increased |
| iSAM Funds (UK) Ltd | 42.9K | $910K | — |
KeyVex tracks a curated set of large 13F filers plus the largest positions in recent filings, so this is a sample of institutional activity, not the whole market.
Insider Trading
Net shares bought (+) or sold (−) on the open market by MDU insiders, by quarter · Form 4
Recent Insider Transactions
1,745 transactions on record · newest first
| Insider | Type | Shares | Price | Value | Date | |
|---|---|---|---|---|---|---|
| DURKIN MARIAN MDirector | Grant / award | +157 | $0.00 | $0 | Mar 31, 2026 | Form 4 ↗ |
| Dosch Vernon A.Director | Grant / award | +1,334 | $0.00 | $0 | Mar 31, 2026 | Form 4 ↗ |
| Vollmer Jason LCFO | Tax withholding | −36.8K | $20.36 | $749K | Feb 18, 2026 | Form 4 ↗ |
| Sievert Stephanie AChiefAccntg&RegAffairsOfficer | Tax withholding | −10.4K | $20.36 | $213K | Feb 18, 2026 | Form 4 ↗ |
| Senger GarretChief Utilities Officer | Tax withholding | −8,167 | $20.36 | $166K | Feb 18, 2026 | Form 4 ↗ |
| Kivisto Nicole APresident & CEO · Director | Tax withholding | −35.7K | $20.36 | $726K | Feb 18, 2026 | Form 4 ↗ |
| Jones Anne MChiefHRSafety&AdminOfficer | Tax withholding | −12.0K | $20.36 | $245K | Feb 18, 2026 | Form 4 ↗ |
| Johnson Rob L.President-WBI | Tax withholding | −10.6K | $20.36 | $216K | Feb 18, 2026 | Form 4 ↗ |
| Foti Anthony DonaldCLO & Corporate Secretary | Grant / award | +8,161 | $0.00 | $0 | Feb 17, 2026 | Form 4 ↗ |
| Boese Dyke A.CIO | Grant / award | +3,702 | $0.00 | $0 | Feb 17, 2026 | Form 4 ↗ |
| Vollmer Jason LCFO | Grant / award | +15.2K | $0.00 | $0 | Feb 17, 2026 | Form 4 ↗ |
| Sievert Stephanie AChiefAccntg&RegAffairsOfficer | Grant / award | +4,544 | $0.00 | $0 | Feb 17, 2026 | Form 4 ↗ |
| Senger GarretChief Utilities Officer | Grant / award | +6,920 | $0.00 | $0 | Feb 17, 2026 | Form 4 ↗ |
| Kivisto Nicole APresident & CEO · Director | Grant / award | +45.0K | $0.00 | $0 | Feb 17, 2026 | Form 4 ↗ |
| Jones Anne MChiefHRSafety&AdminOfficer | Grant / award | +5,523 | $0.00 | $0 | Feb 17, 2026 | Form 4 ↗ |
| Johnson Rob L.President-WBI | Grant / award | +5,830 | $0.00 | $0 | Feb 17, 2026 | Form 4 ↗ |
| KELLEY CHARLES MDirector | Purchase | +5,000 | $20.85 | $104K | Feb 13, 2026 | Form 4 ↗ |
| DURKIN MARIAN MDirector | Grant / award | +164 | $0.00 | $0 | Dec 31, 2025 | Form 4 ↗ |
| Dosch Vernon A.Director | Grant / award | +1,394 | $0.00 | $0 | Dec 31, 2025 | Form 4 ↗ |
| Patel Priti RashmikantDirector | Grant / award | +4,849 | $0.00 | $0 | Nov 13, 2025 | Form 4 ↗ |
Fund Holders
Mutual funds and ETFs holding MDU · SEC Form N-PORT
| Fund | Shares | Value | % of fund | As of |
|---|---|---|---|---|
| iShares Core S&P Small-Cap ETF iShares Trust | 12.6M | $267.1M | 0.24% | Jun 30, 2026 |
| VANGUARD TOTAL STOCK MARKET INDEX FUND VANGUARD INDEX FUNDS | 6.6M | $140.9M | 0.01% | Jun 30, 2026 |
| Bridge Builder Large Cap Value Fund Bridge Builder Trust | 5.1M | $108.6M | 0.37% | Jun 30, 2026 |
| VANGUARD SMALL-CAP INDEX FUND VANGUARD INDEX FUNDS | 4.8M | $101.7M | 0.05% | Jun 30, 2026 |
| VANGUARD SMALL-CAP VALUE INDEX FUND VANGUARD INDEX FUNDS | 3.0M | $64.4M | 0.09% | Jun 30, 2026 |
| VANGUARD EXTENDED MARKET INDEX FUND VANGUARD INDEX FUNDS | 2.4M | $50.8M | 0.05% | Jun 30, 2026 |
| U.S. SMALL CAP VALUE PORTFOLIO DFA INVESTMENT DIMENSIONS GROUP INC | 2.4M | $48.7M | 0.25% | Jul 31, 2026 |
| State Street(R) SPDR(R) Portfolio S&P 600(TM) Small Cap ETF SPDR SERIES TRUST | 1.9M | $40.6M | 0.24% | Jun 30, 2026 |
| iShares S&P Small-Cap 600 Value ETF iShares Trust | 1.8M | $38.2M | 0.48% | Jun 30, 2026 |
| Global X U.S. Infrastructure Development ETF GLOBAL X FUNDS | 1.8M | $37.8M | 0.28% | May 31, 2026 |
Mutual funds and ETFs whose N-PORT filings list MDU's shares (CUSIP 552690109), each fund at its latest report since Mar 7, 2026, largest positions first. Bonds, options and short positions are left out.
Activist & Passive Stakes
Schedule 13D / 13G beneficial-ownership filings
Corporate Lobbying
Estimated quarterly lobbying spending reported under the LDA, filings naming MDU RESOURCES GROUP INC as client
No lobbying filings found naming MDU RESOURCES GROUP INC as the client.
Government Contracts
Federal awards to mdu resources · USAspending
$340KAwarded · 4 contracts on record
- Department of Homeland SecurityELECTRICITY SERVICE FOR TSA AT BIS.$12K
Sep 29, 2026 · ↗ - Department of JusticeNATURAL GAS UTILITY SERVICE - INTERMOUNTAIN GAS COMPANY$66K
Jan 1, 2024 · ↗ - Department of Health and Human ServicesELECTRIC POWER AND NATURAL GAS SERVICE FOR FPSU MEDICAL FACILITIES AND GOVERNMENT QUARTERS LOCATED IN POPLAR, MONTANA. PERIOD OF PERFORMANCE$162K
Sep 20, 2023 · ↗ - Department of Health and Human ServicesFORT HALL SERVICE UNIT NATURAL GAS SERVICES$100K
Jul 11, 2022 · ↗
U.S. Patents
Recent USPTO applications naming MDU RESOURCES GROUP INC
No USPTO patent applications found for MDU RESOURCES GROUP INC.
Annual Financials
From MDU's 10-K filings · XBRL
No annual XBRL figures on record for MDU. KeyVex's fundamentals cover about 130 large companies so far.
Stock Splits
Every split and reverse split in the price history
- 47-for-26Stock splitNov 1, 2024
- 16-for-11Stock splitJun 1, 2023
- 3-for-2Stock splitJul 27, 2006
- 3-for-2Stock splitOct 30, 2003
- 3-for-2Stock splitJul 14, 1998
- 3-for-2Stock splitOct 16, 1995
Split dates and ratios from the price history · Close Prices from Tiingo.com
Material Events (8-K)
Corporate events filed with the SEC
About MDU RESOURCES GROUP INC
From SEC EDGAR company records
Industry (SIC 4924)Natural Gas Distribution
SectorUtilities
HeadquartersBISMARCK, ND
SEC CIK0000067716 ↗
Former namesMDU RESOURCES GROUP INC