MDU RES GROUP INC

Ticker: MDU CUSIP: 552690109 Class: COM

DIMENSIONAL FUND ADVISORS LP's Holding History (CIK: 0000354204)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 10,031,797 Value ($000) $195,824 Avg Close $19.57 Range $17.31 - $21.34

Q3 2025

Shares 9,764,097 Value ($000) $173,898 Avg Close $16.46 Range $15.63 - $17.87

Q2 2025

Shares 9,424,524 Value ($000) $157,106 Avg Close $16.45 Range $14.69 - $17.49

Q1 2025

Shares 8,450,566 Value ($000) $142,894 Avg Close $16.76 Range $15.90 - $18.33

Q4 2024

Shares 8,186,994 Value ($000) $147,530 Avg Close $16.91 Range $14.27 - $19.63

Q3 2024

Shares 7,719,639 Value ($000) $211,595 Avg Close $13.65 Range $12.67 - $14.89

Q2 2024

Shares 7,491,990 Value ($000) $188,049 Avg Close $13.17 Range $12.37 - $13.72

Q1 2024

Shares 6,928,566 Value ($000) $174,600 Avg Close $10.98 Range $9.86 - $13.32

Q4 2023

Shares 6,181,092 Value ($000) $122,386 Avg Close $9.95 Range $9.41 - $10.65

Q3 2023

Shares 5,322,992 Value ($000) $104,227 Avg Close $10.78 Range $10.08 - $11.69

Q2 2023

Shares 5,085,681 Value ($000) $106,496 Avg Close $10.43 Range $9.61 - $10.94

Q1 2023

Shares 4,927,386 Value ($000) $150,186 Avg Close $10.70 Range $9.98 - $11.37

Q4 2022

Shares 5,255,578 Value ($000) $159 Avg Close $10.27 Range $9.29 - $11.06

Q3 2022

Shares 5,105,706 Value ($000) $139,646 Avg Close $10.02 Range $8.94 - $11.08

Q2 2022

Shares 4,898,247 Value ($000) $132,200 Avg Close $9.15 Range $8.51 - $9.69

Q1 2022

Shares 4,481,991 Value ($000) $119,443 Avg Close $9.45 Range $8.60 - $10.74

Q4 2021

Shares 4,063,582 Value ($000) $125,319 Avg Close $9.99 Range $9.15 - $10.63

Q3 2021

Shares 3,924,004 Value ($000) $116,431 Avg Close $10.53 Range $9.83 - $11.13

Q2 2021

Shares 3,203,093 Value ($000) $100,381 Avg Close $10.95 Range $10.22 - $11.62

Q1 2021

Shares 3,515,655 Value ($000) $111,130 Avg Close $9.46 Range $8.38 - $10.66

Q4 2020

Shares 3,288,806 Value ($000) $86,622 Avg Close $8.05 Range $7.18 - $8.74

Q3 2020

Shares 2,912,812 Value ($000) $65,533 Avg Close $7.32 Range $6.58 - $8.03

Q2 2020

Shares 2,555,240 Value ($000) $56,673 Avg Close $7.03 Range $5.94 - $8.01

Q1 2020

Shares 2,151,804 Value ($000) $46,262 Avg Close $8.83 Range $4.81 - $10.26

Q4 2019

Shares 2,061,975 Value ($000) $61,259 Avg Close $9.10 Range $8.60 - $9.50

Q3 2019

Shares 2,076,970 Value ($000) $58,552 Avg Close $8.44 Range $7.93 - $9.12

Q2 2019

Shares 2,044,299 Value ($000) $52,739 Avg Close $7.99 Range $7.59 - $8.30

Q1 2019

Shares 2,024,232 Value ($000) $52,284 Avg Close $7.90 Range $7.22 - $8.40

Q4 2018

Shares 1,931,365 Value ($000) $46,041 Avg Close $7.88 Range $7.03 - $8.27

Q3 2018

Shares 1,728,811 Value ($000) $44,412 Avg Close $8.58 Range $7.77 - $9.02

Q2 2018

Shares 1,334,976 Value ($000) $38,288 Avg Close $8.49 Range $8.18 - $8.87

Q1 2018

Shares 994,485 Value ($000) $28,005 Avg Close $8.03 Range $7.29 - $8.53

Q4 2017

Shares 969,483 Value ($000) $26,060 Avg Close $8.04 Range $7.71 - $8.41

Q3 2017

Shares 934,326 Value ($000) $24,246 Avg Close $7.77 Range $7.44 - $8.20

Q2 2017

Shares 926,888 Value ($000) $24,286 Avg Close $7.92 Range $7.51 - $8.25

Q1 2017

Shares 898,229 Value ($000) $24,583 Avg Close $8.03 Range $7.53 - $8.67

Q4 2016

Shares 802,319 Value ($000) $23,085 Avg Close $7.89 Range $7.09 - $8.72

Q3 2016

Shares 840,071 Value ($000) $21,371 Avg Close $6.91 Range $6.46 - $7.47

Q2 2016

Shares 770,212 Value ($000) $18,481 Avg Close $6.12 Range $5.33 - $6.90

Q1 2016

Shares 735,734 Value ($000) $14,317 Avg Close $5.02 Range $4.40 - $5.57

Q4 2015

Shares 730,192 Value ($000) $13,378 Avg Close $5.10 Range $4.59 - $5.49

Q3 2015

Shares 669,687 Value ($000) $11,517 Avg Close $4.95 Range $4.48 - $5.44

Q2 2015

Shares 445,091 Value ($000) $8,693 Avg Close $5.79 Range $5.30 - $6.32

Q1 2015

Shares 396,595 Value ($000) $8,464 Avg Close $6.06 Range $5.47 - $6.65

Q4 2014

Shares 380,068 Value ($000) $8,934 Avg Close $6.84 Range $5.78 - $7.67

Q3 2014

Shares 362,614 Value ($000) $10,085 Avg Close $8.38 Range $7.36 - $9.47

Q2 2014

Shares 347,104 Value ($000) $12,181 Avg Close $9.15 Range $8.68 - $9.59

Q1 2014

Shares 348,490 Value ($000) $11,954 Avg Close $8.65 Range $7.84 - $9.29

Q4 2013

Shares 348,792 Value ($000) $10,655 Avg Close $7.80 Range $7.24 - $8.15

Q3 2013

Shares 343,923 Value ($000) $9,618 Avg Close $7.25 Range $6.78 - $7.90

Q2 2013

Shares 334,679 Value ($000) $8,673 Avg Close $6.58 Range $6.07 - $7.05

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	10,031,797	$195,824	$19.57	$17.31 - $21.34
Q3 2025	9,764,097	$173,898	$16.46	$15.63 - $17.87
Q2 2025	9,424,524	$157,106	$16.45	$14.69 - $17.49
Q1 2025	8,450,566	$142,894	$16.76	$15.90 - $18.33
Q4 2024	8,186,994	$147,530	$16.91	$14.27 - $19.63
Q3 2024	7,719,639	$211,595	$13.65	$12.67 - $14.89
Q2 2024	7,491,990	$188,049	$13.17	$12.37 - $13.72
Q1 2024	6,928,566	$174,600	$10.98	$9.86 - $13.32
Q4 2023	6,181,092	$122,386	$9.95	$9.41 - $10.65
Q3 2023	5,322,992	$104,227	$10.78	$10.08 - $11.69
Q2 2023	5,085,681	$106,496	$10.43	$9.61 - $10.94
Q1 2023	4,927,386	$150,186	$10.70	$9.98 - $11.37
Q4 2022	5,255,578	$159	$10.27	$9.29 - $11.06
Q3 2022	5,105,706	$139,646	$10.02	$8.94 - $11.08
Q2 2022	4,898,247	$132,200	$9.15	$8.51 - $9.69
Q1 2022	4,481,991	$119,443	$9.45	$8.60 - $10.74
Q4 2021	4,063,582	$125,319	$9.99	$9.15 - $10.63
Q3 2021	3,924,004	$116,431	$10.53	$9.83 - $11.13
Q2 2021	3,203,093	$100,381	$10.95	$10.22 - $11.62
Q1 2021	3,515,655	$111,130	$9.46	$8.38 - $10.66
Q4 2020	3,288,806	$86,622	$8.05	$7.18 - $8.74
Q3 2020	2,912,812	$65,533	$7.32	$6.58 - $8.03
Q2 2020	2,555,240	$56,673	$7.03	$5.94 - $8.01
Q1 2020	2,151,804	$46,262	$8.83	$4.81 - $10.26
Q4 2019	2,061,975	$61,259	$9.10	$8.60 - $9.50
Q3 2019	2,076,970	$58,552	$8.44	$7.93 - $9.12
Q2 2019	2,044,299	$52,739	$7.99	$7.59 - $8.30
Q1 2019	2,024,232	$52,284	$7.90	$7.22 - $8.40
Q4 2018	1,931,365	$46,041	$7.88	$7.03 - $8.27
Q3 2018	1,728,811	$44,412	$8.58	$7.77 - $9.02
Q2 2018	1,334,976	$38,288	$8.49	$8.18 - $8.87
Q1 2018	994,485	$28,005	$8.03	$7.29 - $8.53
Q4 2017	969,483	$26,060	$8.04	$7.71 - $8.41
Q3 2017	934,326	$24,246	$7.77	$7.44 - $8.20
Q2 2017	926,888	$24,286	$7.92	$7.51 - $8.25
Q1 2017	898,229	$24,583	$8.03	$7.53 - $8.67
Q4 2016	802,319	$23,085	$7.89	$7.09 - $8.72
Q3 2016	840,071	$21,371	$6.91	$6.46 - $7.47
Q2 2016	770,212	$18,481	$6.12	$5.33 - $6.90
Q1 2016	735,734	$14,317	$5.02	$4.40 - $5.57
Q4 2015	730,192	$13,378	$5.10	$4.59 - $5.49
Q3 2015	669,687	$11,517	$4.95	$4.48 - $5.44
Q2 2015	445,091	$8,693	$5.79	$5.30 - $6.32
Q1 2015	396,595	$8,464	$6.06	$5.47 - $6.65
Q4 2014	380,068	$8,934	$6.84	$5.78 - $7.67
Q3 2014	362,614	$10,085	$8.38	$7.36 - $9.47
Q2 2014	347,104	$12,181	$9.15	$8.68 - $9.59
Q1 2014	348,490	$11,954	$8.65	$7.84 - $9.29
Q4 2013	348,792	$10,655	$7.80	$7.24 - $8.15
Q3 2013	343,923	$9,618	$7.25	$6.78 - $7.90
Q2 2013	334,679	$8,673	$6.58	$6.07 - $7.05