StockSEC filings

MDU RESOURCES GROUP INC (MDU): Insider Trades and Fund Holdings

What insiders and tracked funds have reported about MDU RESOURCES GROUP INC in SEC filings.

0Insider buys, 12 months

$0Bought by insiders, 12 months

$0Sold by insiders, 12 months

2Tracked funds holding

Tracked funds that report MDU

From each fund's latest 13F. Holdings are as of quarter end and are filed up to 45 days later.

Fund	Quarter	Shares	Value	% of portfolio	Change
Renaissance Technologies	Q2 2026	957,150	$20.3M	0.03%	▲ +2.9%
Bridgewater Associates	Q2 2026	80,657	$1.71M	0.01%	▲ +53.3%

Source: SEC Form 13F-HR filings, retrieved Oct 28, 2026. How we read filings

Reading these numbers

Insiders sell for many reasons: taxes, diversification, a house. Purchases with their own money are rarer and are usually read as more informative. A Form 4 is due within two business days of the trade. How to read a Form 4 →