Jason L Vollmer Mdu Resources Group Inc (MDU) insider trading activity

Jason L Vollmer is CFO of MDU RESOURCES GROUP INC. Currently has a direct ownership of 339,548 shares of MDU, which is worth approximately $5.63 Million. The most recent transaction as insider was on Aug 19, 2025, when has been sold 5,000 shares (Common Stock) at a price of $16.27 per share, resulting in proceeds of $81,350. This information was disclosed in a Form 4 filing with the Securities and Exchange Commission (SEC).

Shares Held (Direct Ownership) 340K

2.06% 3M change

57.48% 12M change

Total Value Held $5.63 Million

Jason L Vollmer Transaction History

Date	Transaction	Value	Shares Traded	Shares Held
Aug 19 2025	BUY Open market or private purchase	$81,350 $16.27 p/Share	5,000 Added 1.45%	339,548 Common Stock
Feb 12 2025	SELL Payment of exercise price or tax liability	$512,120 $16.83 p/Share	30,429 Reduced 8.38%	332,689 Common Stock
Feb 12 2025	BUY Grant, award, or other acquisition	-	16,700 Added 4.4%	363,118 Common Stock
Feb 15 2024	SELL Payment of exercise price or tax liability	$251,596 $20.85 p/Share	12,067 Reduced 5.3%	215,614 Common Stock
Feb 15 2024	BUY Grant, award, or other acquisition	-	56,459 Added 19.87%	227,681 Common Stock
May 31 2023	BUY Grant, award, or other acquisition	-	32,835 Added 19.89%	132,260 Common Stock
Feb 16 2023	SELL Payment of exercise price or tax liability	$202,103 $31.16 p/Share	6,486 Reduced 6.15%	99,032 Common Stock
Feb 16 2023	BUY Grant, award, or other acquisition	$750,254 $15.58 p/Share	48,155 Added 31.34%	105,518 Common Stock
Feb 17 2022	SELL Payment of exercise price or tax liability	$295,380 $27.73 p/Share	10,652 Reduced 20.11%	42,310 Common Stock
Feb 17 2022	BUY Grant, award, or other acquisition	-	6,957 Added 11.05%	56,017 Common Stock
Feb 17 2022	BUY Grant, award, or other acquisition	$743,025 $27.73 p/Share	26,795 Added 33.6%	52,962 Common Stock
Feb 11 2021	SELL Payment of exercise price or tax liability	$261,220 $27.35 p/Share	9,551 Reduced 27.28%	25,456 Common Stock
Feb 11 2021	BUY Grant, award, or other acquisition	-	6,750 Added 12.09%	49,060 Common Stock
Feb 11 2021	BUY Grant, award, or other acquisition	$655,853 $27.35 p/Share	23,980 Added 40.65%	35,007 Common Stock
Nov 11 2020	BUY Open market or private purchase	$24,930 $24.93 p/Share	1,000 Added 8.38%	10,938 Common Stock

JLV

Jason L Vollmer

CFO

Bismarck, ND

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