Stephanie A Barth

Insider

First SEC filing: Oct. 2, 2017 · Latest: Oct. 2, 2017

On this page

Insider at Companies where this person is a reporting insider.
Insider transactions Every share this person bought or sold, from Form 4 filings.
Initial holdings The stakes this person held when they first started reporting.

Insider at

MDU buying May 12, 2020

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 19 non-open-market transactions below last 12 months, based on the transactions shown below

Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

19 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Feb. 18, 2026	MDU	F	10,438	$20.36	$212,518	90,503 Direct	-10.34%	Disposed	1.2% (price as of 2026-08-20)
Feb. 17, 2026	MDU	A	4,544	—	—	100,941 Direct	+4.71%	Acquired	(price as of 2026-08-20)
Feb. 12, 2025	MDU	A	4,974	—	—	105,839 Direct	+4.93%	Acquired	(price as of 2026-08-20)
Feb. 12, 2025	MDU	F	9,506	$16.83	$159,986	96,333 Direct	-8.98%	Disposed	22.5% (price as of 2026-08-20)
Feb. 15, 2024	MDU	A	15,018	—	—	67,398 Direct	+28.67%	Acquired	(price as of 2026-08-20)
Feb. 15, 2024	MDU	F	3,842	$20.85	$80,106	63,556 Direct	-5.70%	Disposed	78.4% (price as of 2026-08-20)
May 31, 2023	MDU	A	6,061	—	—	35,787 Direct	+20.39%	Acquired	(price as of 2026-08-20)
May 31, 2023	MDU	A	4,721	—	—	40,508 Direct	+13.19%	Acquired	(price as of 2026-08-20)
Feb. 16, 2023	MDU	A	9,204	—	—	26,329 Direct	+53.75%	Acquired	(price as of 2026-08-20)
Feb. 16, 2023	MDU	A	5,275	$31.16	$164,369	31,604 Direct	+20.03%	Acquired	73.9% (price as of 2026-08-20)
Feb. 16, 2023	MDU	F	1,892	$31.16	$58,955	29,712 Direct	-5.99%	Disposed	73.9% (price as of 2026-08-20)
Feb. 17, 2022	MDU	A	2,212	—	—	17,064 Direct	+14.89%	Acquired	(price as of 2026-08-20)
Feb. 17, 2022	MDU	A	8,373	$27.73	$232,183	15,760 Direct	+113.35%	Acquired	95.5% (price as of 2026-08-20)
Feb. 17, 2022	MDU	F	3,222	$27.73	$89,346	12,538 Direct	-20.44%	Disposed	95.5% (price as of 2026-08-20)
Feb. 11, 2021	MDU	A	2,314	—	—	14,852 Direct	+18.46%	Acquired	(price as of 2026-08-20)
Feb. 11, 2021	MDU	A	6,280	$27.35	$171,758	9,548 Direct	+192.17%	Acquired	98.2% (price as of 2026-08-20)
Feb. 11, 2021	MDU	F	2,212	$27.35	$60,498	7,336 Direct	-23.17%	Disposed	98.2% (price as of 2026-08-20)
May 12, 2020	MDU	P	1,278	$21.07	$26,927	3,219 Direct	+65.84%	Acquired	157.2% (price as of 2026-08-20)
Feb. 13, 2020	MDU	A	542	$31.63	$17,143	2,106 Direct	+34.65%	Acquired	71.4% (price as of 2026-08-20)
Feb. 13, 2020	MDU	F	170	$31.63	$5,377	1,936 Direct	-8.07%	Disposed	71.4% (price as of 2026-08-20)
March 13, 2018	MDU	P	377	$27.07	$10,205	1,537 Direct	+32.50%	Acquired	100.2% (price as of 2026-08-20)

P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding

Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.

Initial ownership (Form 3) 3 holdings

Securities held when first becoming an insider, per SEC Form 3.

Date	Ticker	Security	Shares	Ownership
Oct. 2, 2017	MDU	Common Stock	1,157	Direct
Oct. 2, 2017	MDU	Common Stock	22	Indirect
Oct. 2, 2017	MDU	Common Stock - (401-k) [F1]	57	Indirect