MDU Resources Group, Inc.
MX ˙ BMV ˙ US5526901096
SecurityMX:MDU / MDU Resources Group, Inc.
InstitutionM&t Bank Corp
Latest Disclosed Ownership315,252 shares
Latest Disclosed Value $ 6,532,021
M&t Bank Corp reports 0.67% decrease in ownership of MDU / MDU Resources Group, Inc.

On May 12, 2026 - M&t Bank Corp filed a 13F-HR form disclosing ownership of 315,252 shares of MDU Resources Group, Inc. (MX:MDU) valued at $6,532,021 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on January 30, 2026 disclosing 317,375 shares of MDU Resources Group, Inc.. This represents a change in shares of -0.67% 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)
2026-05-12 2026-03-31 13F MDU RES GROUP COM 552690109 315,252 -2,123 -0.67 6,532 5.44 0.0053
2026-01-30 2025-12-31 13F/A-1 MDU RES GROUP COM 552690109 317,375 2,026 0.64 6,195 10.31 0.0199
2026-01-28 2025-12-31 13F MDU RES GROUP COM 552690109 10,934 -304,415 409 0.0002
2025-11-14 2025-09-30 13F MDU RES GROUP COM 552690109 315,349 -2,251 -0.71 5,616 6.08 0.0189
2025-08-13 2025-06-30 13F MDU RES GROUP COM 552690109 317,600 5,282 1.69 5,294 0.25 0.0182
2025-04-30 2025-03-31 13F MDU RES GROUP COM 552690109 312,318 -948 -0.30 5,281 -6.45 0.0192
2025-02-06 2024-12-31 13F MDU RES GROUP COM 552690109 313,266 50 0.02 5,645 -34.25 0.0189
2024-11-19 2024-09-30 13F/A-1 MDU RES GROUP COM 552690109 313,216 -13,542 -4.14 8,586 4.68 0.0282
2024-11-15 2024-09-30 13F MDU RES GROUP COM 552690109 313,216 -13,542 8,586 0.0052
2024-07-31 2024-06-30 13F MDU RES GROUP COM 552690109 326,758 725 0.22 8,202 -0.18 0.0280
2024-05-07 2024-03-31 13F MDU RES GROUP COM 552690109 326,033 -280 -0.09 8,216 27.16 0.0286
2024-02-06 2023-12-31 13F MDU RES GROUP COM 552690109 326,313 -2,324 -0.71 6,461 0.40 0.0237
2023-11-02 2023-09-30 13F MDU RES GROUP COM 552690109 328,637 9,926 3.11 6,435 -3.57 0.0257
2023-08-09 2023-06-30 13F MDU RES GROUP COM 552690109 318,711 -2,580 -0.80 6,674 -31.85 0.0249
2023-05-11 2023-03-31 13F MDU RES GROUP COM 552690109 321,291 400 0.12 9,793 0.58 0.0379
2023-02-13 2022-12-31 13F/A-1 MDU RES GROUP COM 552690109 320,891 -554 -0.17 9,736 10.76 0.0392
2023-02-13 2022-12-31 13F M D C HLDGS COM 552690109 21,010 -300,435 656 0.0026
2022-11-17 2022-09-30 13F/A-1 MDU RES GROUP COM 552690109 321,445 -9,441 -2.85 8,790 -1.44 0.0390
2022-11-14 2022-09-30 13F MDU RES GROUP COM 552690109 321,445 -9,441 8,778 0.0075
2022-08-05 2022-06-30 13F MDU RES GROUP COM 552690109 330,886 2,284 0.70 8,918 1.83 0.0420
2022-05-09 2022-03-31 13F MDU RES GROUP COM 552690109 328,602 2,455 0.75 8,758 -12.93 0.0387
2022-02-07 2021-12-31 13F MDU RES GROUP COM 552690109 326,147 -18 -0.01 10,058 3.94 0.0423
2021-10-28 2021-09-30 13F MDU RES GROUP COM 552690109 326,165 14 0.00 9,677 -5.33 0.0436
2021-08-13 2021-06-30 13F MDU RES GROUP COM 552690109 326,151 -700 -0.21 10,222 -1.06 0.0449
2021-05-06 2021-03-31 13F MDU RES GROUP COM 552690109 326,851 -12,911 -3.80 10,332 15.45 0.0446
2021-02-12 2020-12-31 13F MDU RES GROUP COM 552690109 339,762 -850 -0.25 8,949 16.77 0.0393
2020-11-06 2020-09-30 13F MDU RES GROUP COM 552690109 340,612 -6,044 -1.74 7,664 -0.33 0.0376
2020-07-29 2020-06-30 13F MDU RES GROUP COM 552690109 346,656 -92 -0.03 7,689 3.14 0.0412
2020-05-14 2020-03-31 13F MDU RES GROUP COM 552690109 346,748 1,978 0.57 7,455 -27.22 0.0441
2020-02-07 2019-12-31 13F MDU RES GROUP COM 552690109 344,770 -9,500 -2.68 10,243 2.56 0.0481
2019-11-12 2019-09-30 13F MDU RES GROUP COM 552690109 354,270 -8,898 -2.45 9,987 6.58 0.0498
2019-08-12 2019-06-30 13F MDU RES GROUP COM 552690109 363,168 0 0.00 9,370 -0.12 0.0489
2019-05-15 2019-03-31 13F MDU RES GROUP COM 552690109 363,168 -2,462 -0.67 9,381 7.62 0.0490
2019-02-01 2018-12-31 13F MDU RES GROUP COM 552690109 365,630 -31 -0.01 8,717 -7.21 0.0500
2018-11-09 2018-09-30 13F MDU RES GROUP COM 552690109 365,661 -4,880 -1.32 9,394 -11.60 0.0470
2018-08-10 2018-06-30 13F MDU RES GROUP COM 552690109 370,541 -3,000 -0.80 10,627 1.03 0.0572
2018-05-04 2018-03-31 13F MDU RES GROUP COM 552690109 373,541 -1,951 -0.52 10,519 4.22 0.0565
2018-02-06 2017-12-31 13F MDU RES GROUP COM 552690109 375,492 -1,231 -0.33 10,093 3.24 0.0529
2017-11-13 2017-09-30 13F MDU RES GROUP COM 552690109 376,723 -577 -0.15 9,776 -1.10 0.0530
2017-08-11 2017-06-30 13F MDU RES GROUP COM 552690109 377,300 -828 -0.22 9,885 -4.49 0.0584
2017-05-10 2017-03-31 13F MDU RES GROUP COM 552690109 378,128 -7,466 -1.94 10,350 -6.70 0.0625
2017-02-14 2016-12-31 13F MDU RES GROUP COM 552690109 385,594 -1,608 -0.42 11,093 12.61 0.0691
2016-11-04 2016-09-30 13F MDU RES GROUP COM 552690109 387,202 9,388 2.48 9,851 8.63 0.0628
2016-08-04 2016-06-30 13F MDU RES GROUP COM 552690109 377,814 44 0.01 9,068 23.36 0.0610
2016-05-11 2016-03-31 13F MDU RES GROUP COM 552690109 377,770 2,162 0.58 7,351 6.81 0.0498
2016-02-12 2015-12-31 13F MDU RES GROUP COM 552690109 375,608 0 0.00 6,882 6.52 0.0457
2015-11-13 2015-09-30 13F MDU RES GROUP COM 552690109 375,608 -5,124 -1.35 6,461 -13.11 0.0440
2015-08-14 2015-06-30 13F MDU RES GROUP COM 552690109 380,732 -2,715 -0.71 7,436 -9.12 0.0449
2015-05-14 2015-03-31 13F MDU RES GROUP COM 552690109 383,447 -11,084 -2.81 8,182 -11.76 0.0510
2015-02-12 2014-12-31 13F MDU RES GROUP COM 552690109 394,531 -7,826 -1.95 9,272 -17.13 0.0580
2014-11-14 2014-09-30 13F MDU RES GROUP COM 552690109 402,357 402,357 11,189 0.0784
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.