MDU RES GROUP INC

Ticker: MDU CUSIP: 552690109 Class: COM

COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS's Holding History (CIK: 0001083190)

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

Q4 2025

Shares 384,308 Value ($000) $7,502 Avg Close $19.57 Range $17.31 - $21.34

Q3 2025

Shares 385,759 Value ($000) $6,870 Avg Close $16.46 Range $15.63 - $17.87

Q2 2025

Shares 52,460 Value ($000) $875 Avg Close $16.45 Range $14.69 - $17.49

Q1 2025

Shares 48,792 Value ($000) $825 Avg Close $16.76 Range $15.90 - $18.33

Q4 2024

Shares 43,527 Value ($000) $784 Avg Close $16.91 Range $14.27 - $19.63

Q3 2024

Shares 44,944 Value ($000) $1,232 Avg Close $13.65 Range $12.67 - $14.89

Q2 2024

Shares 45,190 Value ($000) $1,134 Avg Close $13.17 Range $12.37 - $13.72

Q1 2024

Shares 45,046 Value ($000) $1,135 Avg Close $10.98 Range $9.86 - $13.32

Q4 2023

Shares 44,934 Value ($000) $890 Avg Close $9.95 Range $9.41 - $10.65

Q3 2023

Shares 41,237 Value ($000) $807 Avg Close $10.78 Range $10.08 - $11.69

Q2 2023

Shares 98,436 Value ($000) $2,061 Avg Close $10.43 Range $9.61 - $10.94

Q1 2023

Shares 91,590 Value ($000) $2,792 Avg Close $10.70 Range $9.98 - $11.37

Q4 2022

Shares 91,479 Value ($000) $3 Avg Close $10.27 Range $9.29 - $11.06

Q3 2022

Shares 80,625 Value ($000) $2,205 Avg Close $10.02 Range $8.94 - $11.08

Q2 2022

Shares 80,504 Value ($000) $2,173 Avg Close $9.15 Range $8.51 - $9.69

Q1 2022

Shares 74,526 Value ($000) $1,986 Avg Close $9.45 Range $8.60 - $10.74

Q4 2021

Shares 67,420 Value ($000) $2,079 Avg Close $9.99 Range $9.15 - $10.63

Q3 2021

Shares 66,878 Value ($000) $1,984 Avg Close $10.53 Range $9.83 - $11.13

Q2 2021

Shares 67,026 Value ($000) $2,101 Avg Close $10.95 Range $10.22 - $11.62

Q1 2021

Shares 66,896 Value ($000) $2,115 Avg Close $9.46 Range $8.38 - $10.66

Q4 2020

Shares 66,961 Value ($000) $1,764 Avg Close $8.05 Range $7.18 - $8.74

Q3 2020

Shares 64,268 Value ($000) $1,446 Avg Close $7.32 Range $6.58 - $8.03

Q2 2020

Shares 42,422 Value ($000) $941 Avg Close $7.03 Range $5.94 - $8.01

Q1 2020

Shares 47,143 Value ($000) $1,014 Avg Close $8.83 Range $4.81 - $10.26

Q4 2019

Shares 35,344 Value ($000) $1,050 Avg Close $9.10 Range $8.60 - $9.50

Q3 2019

Shares 35,048 Value ($000) $988 Avg Close $8.44 Range $7.93 - $9.12

Q2 2019

Shares 34,906 Value ($000) $901 Avg Close $7.99 Range $7.59 - $8.30

Q1 2019

Shares 34,546 Value ($000) $892 Avg Close $7.90 Range $7.22 - $8.40

Q4 2018

Shares 34,396 Value ($000) $820 Avg Close $7.88 Range $7.03 - $8.27

Q3 2018

Shares 39,825 Value ($000) $1,023 Avg Close $8.58 Range $7.77 - $9.02

Q2 2018

Shares 52,717 Value ($000) $1,512 Avg Close $8.49 Range $8.18 - $8.87

Q1 2018

Shares 52,658 Value ($000) $1,483 Avg Close $8.03 Range $7.29 - $8.53

Q4 2017

Shares 28,527 Value ($000) $767 Avg Close $8.04 Range $7.71 - $8.41

Q3 2017

Shares 28,491 Value ($000) $739 Avg Close $7.77 Range $7.44 - $8.20

Q2 2017

Shares 28,503 Value ($000) $747 Avg Close $7.92 Range $7.51 - $8.25

Q1 2017

Shares 28,529 Value ($000) $781 Avg Close $8.03 Range $7.53 - $8.67

Q4 2016

Shares 28,915 Value ($000) $832 Avg Close $7.89 Range $7.09 - $8.72

Q3 2016

Shares 28,888 Value ($000) $735 Avg Close $6.91 Range $6.46 - $7.47

Q2 2016

Shares 37,591 Value ($000) $902 Avg Close $6.12 Range $5.33 - $6.90

Q1 2016

Shares 34,905 Value ($000) $679 Avg Close $5.02 Range $4.40 - $5.57

Q4 2015

Shares 56,613 Value ($000) $1,037 Avg Close $5.10 Range $4.59 - $5.49

Q3 2015

Shares 56,313 Value ($000) $969 Avg Close $4.95 Range $4.48 - $5.44

Q2 2015

Shares 56,274 Value ($000) $1,099 Avg Close $5.79 Range $5.30 - $6.32

Q1 2015

Shares 50,741 Value ($000) $1,083 Avg Close $6.06 Range $5.47 - $6.65

Q4 2014

Shares 41,639 Value ($000) $979 Avg Close $6.84 Range $5.78 - $7.67

Q3 2014

Shares 26,916 Value ($000) $749 Avg Close $8.38 Range $7.36 - $9.47

Q2 2014

Shares 26,641 Value ($000) $935 Avg Close $9.15 Range $8.68 - $9.59

Q1 2014

Shares 26,441 Value ($000) $907 Avg Close $8.65 Range $7.84 - $9.29

Q4 2013

Shares 26,501 Value ($000) $810 Avg Close $7.80 Range $7.24 - $8.15

Q3 2013

Shares 26,803 Value ($000) $750 Avg Close $7.25 Range $6.78 - $7.90

Q2 2013

Shares 26,871 Value ($000) $696 Avg Close $6.58 Range $6.07 - $7.05

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	384,308	$7,502	$19.57	$17.31 - $21.34
Q3 2025	385,759	$6,870	$16.46	$15.63 - $17.87
Q2 2025	52,460	$875	$16.45	$14.69 - $17.49
Q1 2025	48,792	$825	$16.76	$15.90 - $18.33
Q4 2024	43,527	$784	$16.91	$14.27 - $19.63
Q3 2024	44,944	$1,232	$13.65	$12.67 - $14.89
Q2 2024	45,190	$1,134	$13.17	$12.37 - $13.72
Q1 2024	45,046	$1,135	$10.98	$9.86 - $13.32
Q4 2023	44,934	$890	$9.95	$9.41 - $10.65
Q3 2023	41,237	$807	$10.78	$10.08 - $11.69
Q2 2023	98,436	$2,061	$10.43	$9.61 - $10.94
Q1 2023	91,590	$2,792	$10.70	$9.98 - $11.37
Q4 2022	91,479	$3	$10.27	$9.29 - $11.06
Q3 2022	80,625	$2,205	$10.02	$8.94 - $11.08
Q2 2022	80,504	$2,173	$9.15	$8.51 - $9.69
Q1 2022	74,526	$1,986	$9.45	$8.60 - $10.74
Q4 2021	67,420	$2,079	$9.99	$9.15 - $10.63
Q3 2021	66,878	$1,984	$10.53	$9.83 - $11.13
Q2 2021	67,026	$2,101	$10.95	$10.22 - $11.62
Q1 2021	66,896	$2,115	$9.46	$8.38 - $10.66
Q4 2020	66,961	$1,764	$8.05	$7.18 - $8.74
Q3 2020	64,268	$1,446	$7.32	$6.58 - $8.03
Q2 2020	42,422	$941	$7.03	$5.94 - $8.01
Q1 2020	47,143	$1,014	$8.83	$4.81 - $10.26
Q4 2019	35,344	$1,050	$9.10	$8.60 - $9.50
Q3 2019	35,048	$988	$8.44	$7.93 - $9.12
Q2 2019	34,906	$901	$7.99	$7.59 - $8.30
Q1 2019	34,546	$892	$7.90	$7.22 - $8.40
Q4 2018	34,396	$820	$7.88	$7.03 - $8.27
Q3 2018	39,825	$1,023	$8.58	$7.77 - $9.02
Q2 2018	52,717	$1,512	$8.49	$8.18 - $8.87
Q1 2018	52,658	$1,483	$8.03	$7.29 - $8.53
Q4 2017	28,527	$767	$8.04	$7.71 - $8.41
Q3 2017	28,491	$739	$7.77	$7.44 - $8.20
Q2 2017	28,503	$747	$7.92	$7.51 - $8.25
Q1 2017	28,529	$781	$8.03	$7.53 - $8.67
Q4 2016	28,915	$832	$7.89	$7.09 - $8.72
Q3 2016	28,888	$735	$6.91	$6.46 - $7.47
Q2 2016	37,591	$902	$6.12	$5.33 - $6.90
Q1 2016	34,905	$679	$5.02	$4.40 - $5.57
Q4 2015	56,613	$1,037	$5.10	$4.59 - $5.49
Q3 2015	56,313	$969	$4.95	$4.48 - $5.44
Q2 2015	56,274	$1,099	$5.79	$5.30 - $6.32
Q1 2015	50,741	$1,083	$6.06	$5.47 - $6.65
Q4 2014	41,639	$979	$6.84	$5.78 - $7.67
Q3 2014	26,916	$749	$8.38	$7.36 - $9.47
Q2 2014	26,641	$935	$9.15	$8.68 - $9.59
Q1 2014	26,441	$907	$8.65	$7.84 - $9.29
Q4 2013	26,501	$810	$7.80	$7.24 - $8.15
Q3 2013	26,803	$750	$7.25	$6.78 - $7.90
Q2 2013	26,871	$696	$6.58	$6.07 - $7.05