Bart A Holaday

Insider

First SEC filing: Nov. 17, 2008 · Latest: Nov. 17, 2008

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.
Derivatives Options and other derivative holdings reported by this person.

Insider at

MDU buying Feb. 26, 2010

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 30 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

30 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
March 30, 2018	MDU	A	624	$28.06	$17,509	12,109 Direct	+5.43%	Acquired	93.5% (price as of 2026-08-18)
Dec. 29, 2017	MDU	A	657	$26.62	$17,489	11,405 Direct	+6.11%	Acquired	104.0% (price as of 2026-08-18)
Nov. 21, 2017	MDU	A	4,091	$26.88	$109,966	65,002 Direct	+6.72%	Acquired	102.0% (price as of 2026-08-18)
Sept. 30, 2017	MDU	A	745	$26.08	$19,430	10,747 Direct	+7.45%	Acquired	108.2% (price as of 2026-08-18)
June 30, 2017	MDU	A	702	$26.30	$18,463	10,002 Direct	+7.55%	Acquired	106.5% (price as of 2026-08-18)
March 31, 2017	MDU	A	662	$27.04	$17,900	9,300 Direct	+7.66%	Acquired	100.8% (price as of 2026-08-18)
Dec. 31, 2016	MDU	A	615	$28.95	$17,804	8,638 Direct	+7.67%	Acquired	87.6% (price as of 2026-08-18)
Nov. 21, 2016	MDU	A	3,886	$28.30	$109,974	60,911 Direct	+6.81%	Acquired	91.9% (price as of 2026-08-18)
Sept. 30, 2016	MDU	A	691	$25.50	$17,620	8,023 Direct	+9.42%	Acquired	113.0% (price as of 2026-08-18)
June 30, 2016	MDU	A	748	$23.38	$17,488	7,332 Direct	+11.36%	Acquired	132.3% (price as of 2026-08-18)
March 31, 2016	MDU	A	893	$19.39	$17,315	6,584 Direct	+15.69%	Acquired	180.1% (price as of 2026-08-18)
Dec. 31, 2015	MDU	A	925	$18.52	$17,131	5,691 Direct	+19.41%	Acquired	193.2% (price as of 2026-08-18)
Nov. 18, 2015	MDU	A	6,039	$18.21	$109,970	57,025 Direct	+11.84%	Acquired	198.2% (price as of 2026-08-18)
Sept. 30, 2015	MDU	A	1,025	$16.52	$16,933	4,766 Direct	+27.40%	Acquired	228.7% (price as of 2026-08-18)
June 30, 2015	MDU	A	854	$19.66	$16,790	3,741 Direct	+29.58%	Acquired	176.2% (price as of 2026-08-18)
March 31, 2015	MDU	A	775	$21.46	$16,632	2,887 Direct	+36.70%	Acquired	153.1% (price as of 2026-08-18)
Dec. 31, 2014	MDU	A	685	$24.10	$16,508	2,112 Direct	+48.00%	Acquired	125.3% (price as of 2026-08-18)
Nov. 19, 2014	MDU	A	4,340	$25.34	$109,976	50,986 Direct	+9.30%	Acquired	114.3% (price as of 2026-08-18)
Sept. 30, 2014	MDU	A	593	$27.63	$16,385	1,427 Direct	+71.10%	Acquired	96.6% (price as of 2026-08-18)
June 30, 2014	MDU	A	427	$34.32	$14,655	834 Direct	+104.91%	Acquired	58.2% (price as of 2026-08-18)
March 31, 2014	MDU	A	407	$33.81	$13,761	407 Direct	—	Acquired	60.6% (price as of 2026-08-18)
Dec. 9, 2013	MDU	A	1,843	$29.83	$54,977	46,646 Direct	+4.11%	Acquired	82.1% (price as of 2026-08-18)
Nov. 20, 2013	MDU	A	3,603	$30.53	$110,000	44,803 Direct	+8.75%	Acquired	77.9% (price as of 2026-08-18)
Dec. 7, 2012	MDU	A	721	$20.80	$14,997	41,200 Direct	+1.78%	Acquired	161.1% (price as of 2026-08-18)
Nov. 19, 2012	MDU	A	5,467	$20.12	$109,996	40,479 Direct	+15.61%	Acquired	169.9% (price as of 2026-08-18)
Dec. 9, 2011	MDU	A	731	$20.52	$15,000	35,012 Direct	+2.13%	Acquired	164.7% (price as of 2026-08-18)
Nov. 21, 2011	MDU	A	5,450	$20.18	$109,981	34,281 Direct	+18.90%	Acquired	169.1% (price as of 2026-08-18)
Dec. 8, 2010	MDU	A	731	$20.51	$14,993	28,831 Direct	+2.60%	Acquired	164.8% (price as of 2026-08-18)
May 17, 2010	MDU	A	4,050	$19.52	$79,056	28,100 Direct	+16.84%	Acquired	178.2% (price as of 2026-08-18)
Feb. 26, 2010	MDU	P	2,100	$20.41	$42,861	24,050 Direct	+9.57%	Acquired	166.1% (price as of 2026-08-18)
Feb. 26, 2010	MDU	P	400	$20.40	$8,160	21,950 Direct	+1.86%	Acquired	166.2% (price as of 2026-08-18)
Feb. 26, 2010	MDU	P	3,341	$20.40	$68,156	21,550 Direct	+18.35%	Acquired	166.2% (price as of 2026-08-18)
Feb. 26, 2010	MDU	P	300	$20.40	$6,120	18,209 Direct	+1.68%	Acquired	166.2% (price as of 2026-08-18)
Feb. 26, 2010	MDU	P	500	$20.40	$10,200	17,909 Direct	+2.87%	Acquired	166.2% (price as of 2026-08-18)
Feb. 26, 2010	MDU	P	2,959	$20.39	$60,334	17,409 Direct	+20.48%	Acquired	166.3% (price as of 2026-08-18)
Feb. 26, 2010	MDU	P	400	$20.38	$8,152	14,450 Direct	+2.85%	Acquired	166.5% (price as of 2026-08-18)
May 18, 2009	MDU	A	4,050	$17.15	$69,458	14,050 Direct	+40.50%	Acquired	216.7% (price as of 2026-08-18)
Nov. 14, 2008	MDU	P	10,000	$19.00	$190,000	10,000 Direct	—	Acquired	185.8% (price as of 2026-08-18)

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.

Derivative holdings (Form 4 Table II)

Options, RSUs and convertible securities reported on Form 4 Table II.

Date	Ticker	Security	Underlying	Exercise price	Expiration	Shares	A/D
March 30, 2018	MDU	Phantom Stock	Common Stock (624)	—	—	624	Acquired
Dec. 29, 2017	MDU	Phantom Stock	Common Stock (657)	—	—	657	Acquired
Sept. 30, 2017	MDU	Phantom Stock	Common Stock (745)	—	—	745	Acquired
June 30, 2017	MDU	Phantom Stock	Common Stock (702)	—	—	702	Acquired
March 31, 2017	MDU	Phantom Stock	Common Stock (662)	—	—	662	Acquired
Dec. 31, 2016	MDU	Phantom Stock	Common Stock (615)	—	—	615	Acquired
Sept. 30, 2016	MDU	Phantom Stock	Common Stock (691)	—	—	691	Acquired
June 30, 2016	MDU	Phantom Stock	Common Stock (748)	—	—	748	Acquired
March 31, 2016	MDU	Phantom Stock	Common Stock (893)	—	—	893	Acquired
Dec. 31, 2015	MDU	Phantom Stock	Common Stock (925)	—	—	925	Acquired
Sept. 30, 2015	MDU	Phantom Stock	Common Stock (1,025)	—	—	1,025	Acquired
June 30, 2015	MDU	Phantom Stock	Common Stock (854)	—	—	854	Acquired
March 31, 2015	MDU	Phantom Stock	Common Stock (775)	—	—	775	Acquired
Dec. 31, 2014	MDU	Phantom Stock	Common Stock (685)	—	—	685	Acquired
Sept. 30, 2014	MDU	Phantom Stock	Common Stock (593)	—	—	593	Acquired
June 30, 2014	MDU	Phantom Stock	Common Stock (427)	—	—	427	Acquired
March 31, 2014	MDU	Phantom Stock	Common Stock (407)	—	—	407	Acquired

Exercise/conversion price is blank when not applicable (e.g. RSUs).