MDU Resources Group, Inc.
MX ˙ BMV ˙ US5526901096
SecurityMX:MDU / MDU Resources Group, Inc.
InstitutionNeuberger Berman Group LLC
Latest Disclosed Ownership1,226,667 shares
Latest Disclosed Value $ 25,497,896
Neuberger Berman Group LLC reports 3.15% increase in ownership of MDU / MDU Resources Group, Inc.

On May 14, 2026 - Neuberger Berman Group LLC filed a 13F-HR form disclosing ownership of 1,226,667 shares of MDU Resources Group, Inc. (MX:MDU) valued at $25,497,896 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 1,189,196 shares of MDU Resources Group, Inc.. This represents a change in shares of 3.15% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-14 2026-03-31 13F MDU RESOURCES GROUP Common 552690109 1,226,667 37,471 3.15 25,498 9.84 0.0099
2026-02-13 2025-12-31 13F MDU RESOURCES GROUP Common 552690109 1,189,196 -8,153 -0.68 23,213 8.86 0.0173
2025-11-12 2025-09-30 13F MDU RESOURCES GROUP Common 552690109 1,197,349 -2,430 -0.20 21,325 6.62 0.0156
2025-08-25 2025-06-30 13F/A-1 MDU RESOURCES GROUP Common 552690109 1,199,779 -10,151 -0.84 20,000 -2.24 0.0154
2025-08-13 2025-06-30 13F MDU RESOURCES GROUP Common 552690109 1,199,779 -10,151 20,000 0.0080
2025-05-13 2025-03-31 13F MDU RESOURCES GROUP Common 552690109 1,209,930 -19,031 -1.55 20,460 -7.61 0.0171
2025-02-13 2024-12-31 13F MDU RESOURCES GROUP Common 552690109 1,228,961 4,814 0.39 22,146 -34.00 0.0176
2024-11-14 2024-09-30 13F MDU RESOURCES GROUP Common 552690109 1,224,147 65,570 5.66 33,554 15.38 0.0262
2024-11-14 2024-06-30 13F/A-1 MDU RESOURCES GROUP Common 552690109 1,158,577 -1,043 -0.09 29,080 -0.49 0.0239
2024-08-13 2024-06-30 13F MDU RESOURCES GROUP Common 552690109 1,158,577 -1,043 29,080 0.0239
2024-11-14 2024-03-31 13F/A-1 MDU RESOURCES GROUP Common 552690109 1,159,620 -22,430 -1.90 29,222 24.86 0.0242
2024-05-13 2024-03-31 13F MDU RESOURCES GROUP Common 552690109 1,159,620 -22,430 29,222 0.0242
2024-11-14 2023-12-31 13F/A-2 MDU RESOURCES GROUP Common 552690109 1,182,050 -60,952 -4.90 23,405 -3.83 0.0204
2024-02-09 2023-12-31 13F MDU RESOURCES GROUP Common 552690109 1,182,050 -60,952 23,405 0.0204
2023-11-14 2023-09-30 13F MDU RESOURCES GROUP Common 552690109 1,243,002 -8,704 -0.70 24,338 -7.15 0.0222
2023-08-11 2023-06-30 13F MDU RESOURCES GROUP Common 552690109 1,251,706 533,074 74.18 26,211 19.66 0.0234
2023-05-12 2023-03-31 13F MDU RESOURCES GROUP Common 552690109 718,632 182,750 34.10 21,904 34.72 0.0203
2023-02-13 2022-12-31 13F MDU RESOURCES GROUP Common 552690109 535,882 14,318 2.75 16,259 13.97 0.0159
2022-11-15 2022-09-30 13F MDU RESOURCES GROUP Common 552690109 521,564 513,844 6,656.01 14,265 6,758.17 0.0149
2022-08-15 2022-06-30 13F MDU RESOURCES GROUP Common 552690109 7,720 -439 -5.38 208 -4.15 0.0002
2022-05-23 2022-03-31 13F/A-1 MDU RESOURCES GROUP Common 552690109 8,159 -23,756 -74.44 217 -77.95 0.0002
2022-05-13 2022-03-31 13F MDU RESOURCES GROUP Common 552690109 8,159 -23,756 217 0.0002
2022-02-11 2021-12-31 13F MDU RESOURCES GROUP Common 552690109 31,915 8,779 37.95 984 43.44 0.0008
2021-11-12 2021-09-30 13F MDU RESOURCES GROUP Common 552690109 23,136 -3,847 -14.26 686 -18.91 0.0006
2021-08-13 2021-06-30 13F MDU RESOURCES GROUP Common 552690109 26,983 -12,179 -31.10 846 -31.66 0.0007
2021-05-13 2021-03-31 13F MDU RESOURCES GROUP Common 552690109 39,162 -1,165 -2.89 1,238 16.57 0.0012
2021-02-10 2020-12-31 13F MDU RESOURCES GROUP Common 552690109 40,327 -23,973 -37.28 1,062 -26.61 0.0011
2020-11-12 2020-09-30 13F MDU RESOURCES GROUP Common 552690109 64,300 37,138 136.73 1,447 140.37 0.0017
2020-08-13 2020-06-30 13F MDU RESOURCES GROUP Common 552690109 27,162 27,162 602 0.0007
2019-05-13 2019-03-31 13F MDU RESOURCES GROUP Common 552690109 0 -10,557 -100.00 0 -100.00
2019-02-12 2018-12-31 13F MDU RESOURCES GROUP Common 552690109 10,557 -2,354 -18.23 252 -24.10 0.0004
2018-11-16 2018-09-30 13F/A-1 MDU RESOURCES GROUP Common 552690109 12,911 -105 -0.81 332 -10.99 0.0004
2018-11-13 2018-09-30 13F MDU RESOURCES GROUP Common 552690109 12,911 -105 332
2018-08-13 2018-06-30 13F MDU RESOURCES GROUP Common 552690109 13,016 1,300 11.10 373 13.03 0.0004
2018-05-08 2018-03-31 13F MDU RESOURCES GROUP Common 552690109 11,716 -8,491 -42.02 330 -39.23 0.0004
2018-02-14 2017-12-31 13F MDU RESOURCES GROUP Common 552690109 20,207 -46,527 -69.72 543 -68.65 0.0006
2017-11-15 2017-09-30 13F MDU RESOURCES GROUP COMMON STOCK 552690109 66,734 583 0.88 1,732 -0.06 0.0022
2017-08-08 2017-06-30 13F MDU RESOURCES GROUP COMMON STOCK 552690109 66,151 -37,886 -36.42 1,733 -39.13 0.0022
2017-05-10 2017-03-31 13F MDU RESOURCES GROUP COMMON STOCK 552690109 104,037 6,981 7.19 2,847 1.97 0.0037
2017-02-06 2016-12-31 13F MDU RESOURCES GROUP COMMON STOCK 552690109 97,056 97,056 0.00 2,792 0.0037
2015-02-05 2014-12-31 13F MDU RESOURCES GROUP COMMON STOCK 552690109 0 -24,836 -100.00 0 -100.00
2014-11-04 2014-09-30 13F MDU RESOURCES GROUP COMMON STOCK 552690109 24,836 12,439 100.34 690 58.62 0.0007
2014-08-05 2014-06-30 13F MDU RESOURCES GROUP COMMON STOCK 552690109 12,397 12,397 435 0.0004
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.