MDU RES GROUP INC

Ticker: MDU CUSIP: 552690109 Class: COM

Grove Bank & Trust's Holding History (CIK: 0001662212)

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

Q4 2017

Shares 790 Value ($000) $21 Avg Close $8.04 Range $7.71 - $8.41

Q3 2017

Shares 790 Value ($000) $21 Avg Close $7.77 Range $7.44 - $8.20

Q2 2017

Shares 400 Value ($000) $10 Avg Close $7.92 Range $7.51 - $8.25

Q4 2016

Shares 1,670 Value ($000) $48 Avg Close $7.89 Range $7.09 - $8.72

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2017	790	$21	$8.04	$7.71 - $8.41
Q3 2017	790	$21	$7.77	$7.44 - $8.20
Q2 2017	400	$10	$7.92	$7.51 - $8.25
Q4 2016	1,670	$48	$7.89	$7.09 - $8.72