MDU RES GROUP INC

Ticker: MDU CUSIP: 552690109 Class: COM

PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO's Holding History (CIK: 0000315297)

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

Q4 2025

Shares 21,699 Value ($000) $0 Avg Close $19.57 Range $17.31 - $21.34

Q3 2025

Shares 21,699 Value ($000) $0 Avg Close $16.46 Range $15.63 - $17.87

Q2 2025

Shares 21,699 Value ($000) $0 Avg Close $16.45 Range $14.69 - $17.49

Q1 2025

Shares 21,699 Value ($000) $0 Avg Close $16.76 Range $15.90 - $18.33

Q4 2024

Shares 21,699 Value ($000) $0 Avg Close $16.91 Range $14.27 - $19.63

Q3 2024

Shares 21,699 Value ($000) $1 Avg Close $13.65 Range $12.67 - $14.89

Q2 2024

Shares 21,699 Value ($000) $1 Avg Close $13.17 Range $12.37 - $13.72

Q1 2024

Shares 25,026 Value ($000) $1 Avg Close $10.98 Range $9.86 - $13.32

Q4 2023

Shares 25,026 Value ($000) $0 Avg Close $9.95 Range $9.41 - $10.65

Q3 2023

Shares 25,026 Value ($000) $0 Avg Close $10.78 Range $10.08 - $11.69

Q2 2023

Shares 25,026 Value ($000) $1 Avg Close $10.43 Range $9.61 - $10.94

Q1 2023

Shares 25,026 Value ($000) $1 Avg Close $10.70 Range $9.98 - $11.37

Q4 2022

Shares 25,026 Value ($000) $1 Avg Close $10.27 Range $9.29 - $11.06

Q3 2022

Shares 25,026 Value ($000) $684 Avg Close $10.02 Range $8.94 - $11.08

Q2 2022

Shares 25,026 Value ($000) $675 Avg Close $9.15 Range $8.51 - $9.69

Q1 2022

Shares 25,026 Value ($000) $667 Avg Close $9.45 Range $8.60 - $10.74

Q4 2021

Shares 25,026 Value ($000) $772 Avg Close $9.99 Range $9.15 - $10.63

Q3 2021

Shares 25,026 Value ($000) $743 Avg Close $10.53 Range $9.83 - $11.13

Q2 2021

Shares 25,026 Value ($000) $784 Avg Close $10.95 Range $10.22 - $11.62

Q1 2021

Shares 25,026 Value ($000) $791 Avg Close $9.46 Range $8.38 - $10.66

Q4 2020

Shares 25,026 Value ($000) $659 Avg Close $8.05 Range $7.18 - $8.74

Q3 2020

Shares 25,026 Value ($000) $563 Avg Close $7.32 Range $6.58 - $8.03

Q2 2020

Shares 25,026 Value ($000) $555 Avg Close $7.03 Range $5.94 - $8.01

Q1 2020

Shares 25,026 Value ($000) $538 Avg Close $8.83 Range $4.81 - $10.26

Q4 2019

Shares 21,965 Value ($000) $653 Avg Close $9.10 Range $8.60 - $9.50

Q3 2019

Shares 21,965 Value ($000) $619 Avg Close $8.44 Range $7.93 - $9.12

Q2 2019

Shares 21,965 Value ($000) $567 Avg Close $7.99 Range $7.59 - $8.30

Q1 2019

Shares 26,995 Value ($000) $697 Avg Close $7.90 Range $7.22 - $8.40

Q4 2018

Shares 34,073 Value ($000) $812 Avg Close $7.88 Range $7.03 - $8.27

Q3 2018

Shares 34,155 Value ($000) $877 Avg Close $8.58 Range $7.77 - $9.02

Q2 2018

Shares 34,192 Value ($000) $981 Avg Close $8.49 Range $8.18 - $8.87

Q1 2018

Shares 34,355 Value ($000) $967 Avg Close $8.03 Range $7.29 - $8.53

Q4 2017

Shares 41,066 Value ($000) $1,104 Avg Close $8.04 Range $7.71 - $8.41

Q3 2017

Shares 39,829 Value ($000) $1,034 Avg Close $7.77 Range $7.44 - $8.20

Q2 2017

Shares 40,334 Value ($000) $1,057 Avg Close $7.92 Range $7.51 - $8.25

Q1 2017

Shares 40,377 Value ($000) $1,105 Avg Close $8.03 Range $7.53 - $8.67

Q4 2016

Shares 40,465 Value ($000) $1,164 Avg Close $7.89 Range $7.09 - $8.72

Q3 2016

Shares 40,773 Value ($000) $1,037 Avg Close $6.91 Range $6.46 - $7.47

Q2 2016

Shares 42,341 Value ($000) $1,016 Avg Close $6.12 Range $5.33 - $6.90

Q1 2016

Shares 43,128 Value ($000) $839 Avg Close $5.02 Range $4.40 - $5.57

Q4 2015

Shares 43,069 Value ($000) $789 Avg Close $5.10 Range $4.59 - $5.49

Q3 2015

Shares 43,015 Value ($000) $740 Avg Close $4.95 Range $4.48 - $5.44

Q2 2015

Shares 48,051 Value ($000) $938 Avg Close $5.79 Range $5.30 - $6.32

Q1 2015

Shares 141,788 Value ($000) $3,026 Avg Close $6.06 Range $5.47 - $6.65

Q4 2014

Shares 240,695 Value ($000) $5,656 Avg Close $6.84 Range $5.78 - $7.67

Q3 2014

Shares 240,799 Value ($000) $6,697 Avg Close $8.38 Range $7.36 - $9.47

Q2 2014

Shares 173,699 Value ($000) $6,097 Avg Close $9.15 Range $8.68 - $9.59

Q1 2014

Shares 53,684 Value ($000) $1,842 Avg Close $8.65 Range $7.84 - $9.29

Q4 2013

Shares 53,707 Value ($000) $1,641 Avg Close $7.80 Range $7.24 - $8.15

Q3 2013

Shares 61,458 Value ($000) $1,719 Avg Close $7.25 Range $6.78 - $7.90

Q2 2013

Shares 61,524 Value ($000) $1,594 Avg Close $6.58 Range $6.07 - $7.05

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	21,699	$0	$19.57	$17.31 - $21.34
Q3 2025	21,699	$0	$16.46	$15.63 - $17.87
Q2 2025	21,699	$0	$16.45	$14.69 - $17.49
Q1 2025	21,699	$0	$16.76	$15.90 - $18.33
Q4 2024	21,699	$0	$16.91	$14.27 - $19.63
Q3 2024	21,699	$1	$13.65	$12.67 - $14.89
Q2 2024	21,699	$1	$13.17	$12.37 - $13.72
Q1 2024	25,026	$1	$10.98	$9.86 - $13.32
Q4 2023	25,026	$0	$9.95	$9.41 - $10.65
Q3 2023	25,026	$0	$10.78	$10.08 - $11.69
Q2 2023	25,026	$1	$10.43	$9.61 - $10.94
Q1 2023	25,026	$1	$10.70	$9.98 - $11.37
Q4 2022	25,026	$1	$10.27	$9.29 - $11.06
Q3 2022	25,026	$684	$10.02	$8.94 - $11.08
Q2 2022	25,026	$675	$9.15	$8.51 - $9.69
Q1 2022	25,026	$667	$9.45	$8.60 - $10.74
Q4 2021	25,026	$772	$9.99	$9.15 - $10.63
Q3 2021	25,026	$743	$10.53	$9.83 - $11.13
Q2 2021	25,026	$784	$10.95	$10.22 - $11.62
Q1 2021	25,026	$791	$9.46	$8.38 - $10.66
Q4 2020	25,026	$659	$8.05	$7.18 - $8.74
Q3 2020	25,026	$563	$7.32	$6.58 - $8.03
Q2 2020	25,026	$555	$7.03	$5.94 - $8.01
Q1 2020	25,026	$538	$8.83	$4.81 - $10.26
Q4 2019	21,965	$653	$9.10	$8.60 - $9.50
Q3 2019	21,965	$619	$8.44	$7.93 - $9.12
Q2 2019	21,965	$567	$7.99	$7.59 - $8.30
Q1 2019	26,995	$697	$7.90	$7.22 - $8.40
Q4 2018	34,073	$812	$7.88	$7.03 - $8.27
Q3 2018	34,155	$877	$8.58	$7.77 - $9.02
Q2 2018	34,192	$981	$8.49	$8.18 - $8.87
Q1 2018	34,355	$967	$8.03	$7.29 - $8.53
Q4 2017	41,066	$1,104	$8.04	$7.71 - $8.41
Q3 2017	39,829	$1,034	$7.77	$7.44 - $8.20
Q2 2017	40,334	$1,057	$7.92	$7.51 - $8.25
Q1 2017	40,377	$1,105	$8.03	$7.53 - $8.67
Q4 2016	40,465	$1,164	$7.89	$7.09 - $8.72
Q3 2016	40,773	$1,037	$6.91	$6.46 - $7.47
Q2 2016	42,341	$1,016	$6.12	$5.33 - $6.90
Q1 2016	43,128	$839	$5.02	$4.40 - $5.57
Q4 2015	43,069	$789	$5.10	$4.59 - $5.49
Q3 2015	43,015	$740	$4.95	$4.48 - $5.44
Q2 2015	48,051	$938	$5.79	$5.30 - $6.32
Q1 2015	141,788	$3,026	$6.06	$5.47 - $6.65
Q4 2014	240,695	$5,656	$6.84	$5.78 - $7.67
Q3 2014	240,799	$6,697	$8.38	$7.36 - $9.47
Q2 2014	173,699	$6,097	$9.15	$8.68 - $9.59
Q1 2014	53,684	$1,842	$8.65	$7.84 - $9.29
Q4 2013	53,707	$1,641	$7.80	$7.24 - $8.15
Q3 2013	61,458	$1,719	$7.25	$6.78 - $7.90
Q2 2013	61,524	$1,594	$6.58	$6.07 - $7.05