MDU RES GROUP INC

Ticker: MDU CUSIP: 552690109 Class: COM

PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO's Holding History (CIK: 0001007280)

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

Q4 2025

Shares 131,339 Value ($000) $2,564 Avg Close $19.57 Range $17.31 - $21.34

Q3 2025

Shares 80,427 Value ($000) $1,432 Avg Close $16.46 Range $15.63 - $17.87

Q2 2025

Shares 80,265 Value ($000) $1,338 Avg Close $16.45 Range $14.69 - $17.49

Q1 2025

Shares 86,675 Value ($000) $1,466 Avg Close $16.76 Range $15.90 - $18.33

Q4 2024

Shares 90,459 Value ($000) $1,630 Avg Close $16.91 Range $14.27 - $19.63

Q3 2024

Shares 79,190 Value ($000) $2,171 Avg Close $13.65 Range $12.67 - $14.89

Q2 2024

Shares 86,434 Value ($000) $2,169 Avg Close $13.17 Range $12.37 - $13.72

Q1 2024

Shares 77,322 Value ($000) $1,949 Avg Close $10.98 Range $9.86 - $13.32

Q4 2023

Shares 84,612 Value ($000) $1,675 Avg Close $9.95 Range $9.41 - $10.65

Q3 2023

Shares 91,447 Value ($000) $1,791 Avg Close $10.78 Range $10.08 - $11.69

Q2 2023

Shares 91,417 Value ($000) $1,914 Avg Close $10.43 Range $9.61 - $10.94

Q1 2023

Shares 104,849 Value ($000) $3,196 Avg Close $10.70 Range $9.98 - $11.37

Q4 2022

Shares 103,543 Value ($000) $3,141 Avg Close $10.27 Range $9.29 - $11.06

Q3 2022

Shares 101,371 Value ($000) $2,772 Avg Close $10.02 Range $8.94 - $11.08

Q2 2022

Shares 100,572 Value ($000) $2,714 Avg Close $9.15 Range $8.51 - $9.69

Q1 2022

Shares 122,356 Value ($000) $3,261 Avg Close $9.45 Range $8.60 - $10.74

Q4 2021

Shares 108,296 Value ($000) $3,340 Avg Close $9.99 Range $9.15 - $10.63

Q3 2021

Shares 120,771 Value ($000) $3,583 Avg Close $10.53 Range $9.83 - $11.13

Q2 2021

Shares 118,602 Value ($000) $3,717 Avg Close $10.95 Range $10.22 - $11.62

Q1 2021

Shares 108,445 Value ($000) $3,428 Avg Close $9.46 Range $8.38 - $10.66

Q4 2020

Shares 97,955 Value ($000) $2,580 Avg Close $8.05 Range $7.18 - $8.74

Q3 2020

Shares 76,017 Value ($000) $1,710 Avg Close $7.32 Range $6.58 - $8.03

Q2 2020

Shares 154,332 Value ($000) $3,423 Avg Close $7.03 Range $5.94 - $8.01

Q1 2020

Shares 157,589 Value ($000) $3,388 Avg Close $8.83 Range $4.81 - $10.26

Q4 2019

Shares 146,601 Value ($000) $4,356 Avg Close $9.10 Range $8.60 - $9.50

Q3 2019

Shares 144,898 Value ($000) $4,085 Avg Close $8.44 Range $7.93 - $9.12

Q2 2019

Shares 147,560 Value ($000) $3,807 Avg Close $7.99 Range $7.59 - $8.30

Q1 2019

Shares 158,463 Value ($000) $4,093 Avg Close $7.90 Range $7.22 - $8.40

Q4 2018

Shares 162,462 Value ($000) $3,873 Avg Close $7.88 Range $7.03 - $8.27

Q3 2018

Shares 159,841 Value ($000) $4,106 Avg Close $8.58 Range $7.77 - $9.02

Q2 2018

Shares 158,579 Value ($000) $4,548 Avg Close $8.49 Range $8.18 - $8.87

Q1 2018

Shares 163,132 Value ($000) $4,594 Avg Close $8.03 Range $7.29 - $8.53

Q4 2017

Shares 164,448 Value ($000) $4,420 Avg Close $8.04 Range $7.71 - $8.41

Q3 2017

Shares 164,331 Value ($000) $4,264 Avg Close $7.77 Range $7.44 - $8.20

Q2 2017

Shares 85,028 Value ($000) $2,228 Avg Close $7.92 Range $7.51 - $8.25

Q1 2017

Shares 113,190 Value ($000) $3,098 Avg Close $8.03 Range $7.53 - $8.67

Q4 2016

Shares 111,526 Value ($000) $2,981 Avg Close $7.89 Range $7.09 - $8.72

Q3 2016

Shares 107,633 Value ($000) $2,738 Avg Close $6.91 Range $6.46 - $7.47

Q2 2016

Shares 98,780 Value ($000) $2,371 Avg Close $6.12 Range $5.33 - $6.90

Q1 2016

Shares 97,223 Value ($000) $1,892 Avg Close $5.02 Range $4.40 - $5.57

Q4 2015

Shares 80,606 Value ($000) $1,477 Avg Close $5.10 Range $4.59 - $5.49

Q3 2015

Shares 65,709 Value ($000) $1,130 Avg Close $4.95 Range $4.48 - $5.44

Q2 2015

Shares 76,666 Value ($000) $1,497 Avg Close $5.79 Range $5.30 - $6.32

Q1 2015

Shares 69,266 Value ($000) $1,478 Avg Close $6.06 Range $5.47 - $6.65

Q4 2014

Shares 68,798 Value ($000) $1,617 Avg Close $6.84 Range $5.78 - $7.67

Q3 2014

Shares 54,074 Value ($000) $1,504 Avg Close $8.38 Range $7.36 - $9.47

Q2 2014

Shares 52,208 Value ($000) $1,833 Avg Close $9.15 Range $8.68 - $9.59

Q1 2014

Shares 51,569 Value ($000) $1,769 Avg Close $8.65 Range $7.84 - $9.29

Q4 2013

Shares 56,046 Value ($000) $1,712 Avg Close $7.80 Range $7.24 - $8.15

Q3 2013

Shares 45,679 Value ($000) $1,278 Avg Close $7.25 Range $6.78 - $7.90

Q2 2013

Shares 35,067 Value ($000) $909 Avg Close $6.58 Range $6.07 - $7.05

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	131,339	$2,564	$19.57	$17.31 - $21.34
Q3 2025	80,427	$1,432	$16.46	$15.63 - $17.87
Q2 2025	80,265	$1,338	$16.45	$14.69 - $17.49
Q1 2025	86,675	$1,466	$16.76	$15.90 - $18.33
Q4 2024	90,459	$1,630	$16.91	$14.27 - $19.63
Q3 2024	79,190	$2,171	$13.65	$12.67 - $14.89
Q2 2024	86,434	$2,169	$13.17	$12.37 - $13.72
Q1 2024	77,322	$1,949	$10.98	$9.86 - $13.32
Q4 2023	84,612	$1,675	$9.95	$9.41 - $10.65
Q3 2023	91,447	$1,791	$10.78	$10.08 - $11.69
Q2 2023	91,417	$1,914	$10.43	$9.61 - $10.94
Q1 2023	104,849	$3,196	$10.70	$9.98 - $11.37
Q4 2022	103,543	$3,141	$10.27	$9.29 - $11.06
Q3 2022	101,371	$2,772	$10.02	$8.94 - $11.08
Q2 2022	100,572	$2,714	$9.15	$8.51 - $9.69
Q1 2022	122,356	$3,261	$9.45	$8.60 - $10.74
Q4 2021	108,296	$3,340	$9.99	$9.15 - $10.63
Q3 2021	120,771	$3,583	$10.53	$9.83 - $11.13
Q2 2021	118,602	$3,717	$10.95	$10.22 - $11.62
Q1 2021	108,445	$3,428	$9.46	$8.38 - $10.66
Q4 2020	97,955	$2,580	$8.05	$7.18 - $8.74
Q3 2020	76,017	$1,710	$7.32	$6.58 - $8.03
Q2 2020	154,332	$3,423	$7.03	$5.94 - $8.01
Q1 2020	157,589	$3,388	$8.83	$4.81 - $10.26
Q4 2019	146,601	$4,356	$9.10	$8.60 - $9.50
Q3 2019	144,898	$4,085	$8.44	$7.93 - $9.12
Q2 2019	147,560	$3,807	$7.99	$7.59 - $8.30
Q1 2019	158,463	$4,093	$7.90	$7.22 - $8.40
Q4 2018	162,462	$3,873	$7.88	$7.03 - $8.27
Q3 2018	159,841	$4,106	$8.58	$7.77 - $9.02
Q2 2018	158,579	$4,548	$8.49	$8.18 - $8.87
Q1 2018	163,132	$4,594	$8.03	$7.29 - $8.53
Q4 2017	164,448	$4,420	$8.04	$7.71 - $8.41
Q3 2017	164,331	$4,264	$7.77	$7.44 - $8.20
Q2 2017	85,028	$2,228	$7.92	$7.51 - $8.25
Q1 2017	113,190	$3,098	$8.03	$7.53 - $8.67
Q4 2016	111,526	$2,981	$7.89	$7.09 - $8.72
Q3 2016	107,633	$2,738	$6.91	$6.46 - $7.47
Q2 2016	98,780	$2,371	$6.12	$5.33 - $6.90
Q1 2016	97,223	$1,892	$5.02	$4.40 - $5.57
Q4 2015	80,606	$1,477	$5.10	$4.59 - $5.49
Q3 2015	65,709	$1,130	$4.95	$4.48 - $5.44
Q2 2015	76,666	$1,497	$5.79	$5.30 - $6.32
Q1 2015	69,266	$1,478	$6.06	$5.47 - $6.65
Q4 2014	68,798	$1,617	$6.84	$5.78 - $7.67
Q3 2014	54,074	$1,504	$8.38	$7.36 - $9.47
Q2 2014	52,208	$1,833	$9.15	$8.68 - $9.59
Q1 2014	51,569	$1,769	$8.65	$7.84 - $9.29
Q4 2013	56,046	$1,712	$7.80	$7.24 - $8.15
Q3 2013	45,679	$1,278	$7.25	$6.78 - $7.90
Q2 2013	35,067	$909	$6.58	$6.07 - $7.05