Martin A White

CIK 1195503 · View on SEC EDGAR ↗

Insider

First SEC filing: Feb. 21, 2006 · Latest: Feb. 21, 2006

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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.
Initial holdings The stakes this person held when they first started reporting.
Compensation Executive pay disclosed in company proxy statements.

Insider at

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 43 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

43 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
May 24, 2011	FIBK	A	924	$13.25	$12,243	924 Direct	—	Acquired	185.1% (price as of 2026-08-20)
May 7, 2010	FIBK	A	1,972	$15.91	$31,375	1,972 Direct	—	Acquired	137.5% (price as of 2026-08-20)
May 15, 2009	FIBK	A	490	$61.00	$29,890	490 Direct	—	Acquired	-38.1% (price as of 2026-08-20)
Sept. 30, 2008	FIBK	P	1,299	$77.00	$100,023	3,853 Direct	+50.86%	Acquired	-50.9% (price as of 2026-08-20)
May 9, 2008	FIBK	A	626	$83.50	$52,271	626 Direct	—	Acquired	-54.8% (price as of 2026-08-20)
May 9, 2008	FIBK	A	179	$83.50	$14,946	2,554 Direct	+7.54%	Acquired	-54.8% (price as of 2026-08-20)
Sept. 28, 2007	FIBK	P	576	$86.75	$49,968	2,375 Direct	+32.02%	Acquired	-56.4% (price as of 2026-08-20)
May 4, 2007	FIBK	A	480	$89.00	$42,720	480 Direct	—	Acquired	-57.6% (price as of 2026-08-20)
Sept. 29, 2006	FIBK	P	647	$77.25	$49,981	1,799 Direct	+56.16%	Acquired	-51.1% (price as of 2026-08-20)
May 5, 2006	FIBK	A	538	$71.00	$38,198	538 Direct	—	Acquired	-46.8% (price as of 2026-08-20)
May 5, 2006	FIBK	A	183	—	—	1,152 Direct	+18.89%	Acquired	(price as of 2026-08-20)
Feb. 16, 2006	MDU	F	6,176	$34.65	$213,998	130,837 Direct	-4.51%	Disposed	134.6% (price as of 2026-08-20)
Feb. 16, 2006	MDU	A	13,439	—	—	137,013 Direct	+10.88%	Acquired	(price as of 2026-08-20)
Feb. 3, 2006	MDU	G	800	—	—	5,033 Indirect	+18.90%	Acquired	(price as of 2026-08-20)
Feb. 3, 2006	MDU	G	800	—	—	116,674 Direct	-0.68%	Disposed	(price as of 2026-08-20)
Sept. 29, 2005	FIBK	P	763	$65.50	$49,976	969 Direct	+370.39%	Acquired	-42.3% (price as of 2026-08-20)
May 9, 2005	FIBK	A	552	$63.00	$34,776	552 Direct	—	Acquired	-40.0% (price as of 2026-08-20)
May 9, 2005	FIBK	A	206	—	—	206 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 17, 2005	MDU	F	4,358	$27.68	$120,629	124,686 Direct	-3.38%	Disposed	193.7% (price as of 2026-08-20)
Feb. 17, 2005	MDU	F	2,277	$27.68	$63,027	129,044 Direct	-1.73%	Disposed	193.7% (price as of 2026-08-20)
Feb. 17, 2005	MDU	A	14,350	—	—	131,321 Direct	+12.27%	Acquired	(price as of 2026-08-20)
Feb. 14, 2005	MDU	G	600	—	—	1,770 Indirect	+51.28%	Acquired	(price as of 2026-08-20)
Feb. 14, 2005	MDU	G	600	—	—	109,471 Direct	-0.55%	Disposed	(price as of 2026-08-20)
Aug. 27, 2004	MDU	M	37,400	$19.83	$741,642	114,538 Direct	+48.48%	Acquired	310.0% (price as of 2026-08-20)
Aug. 27, 2004	MDU	M	30,900	$19.83	$612,747	145,438 Direct	+26.98%	Acquired	310.0% (price as of 2026-08-20)
Aug. 27, 2004	MDU	S	37,400	$24.85	$929,390	108,038 Direct	-25.72%	Disposed	227.2% (price as of 2026-08-20)
Aug. 27, 2004	MDU	G	300	—	—	107,738 Direct	-0.28%	Disposed	(price as of 2026-08-20)
Aug. 27, 2004	MDU	G	300	—	—	1,167 Indirect	+34.60%	Acquired	(price as of 2026-08-20)
Aug. 27, 2004	MDU	M	37,400	—	—	30,900 Direct	-54.76%	Disposed	(price as of 2026-08-20)
Aug. 27, 2004	MDU	M	30,900	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Aug. 26, 2004	MDU	M	50,000	$19.83	$991,500	127,138 Direct	+64.82%	Acquired	310.0% (price as of 2026-08-20)
Aug. 26, 2004	MDU	S	1,300	$24.74	$32,162	125,838 Direct	-1.02%	Disposed	228.6% (price as of 2026-08-20)
Aug. 26, 2004	MDU	S	14,600	$24.75	$361,350	111,238 Direct	-11.60%	Disposed	228.5% (price as of 2026-08-20)
Aug. 26, 2004	MDU	S	6,400	$24.76	$158,464	104,838 Direct	-5.75%	Disposed	228.4% (price as of 2026-08-20)
Aug. 26, 2004	MDU	S	20,000	$24.77	$495,400	84,838 Direct	-19.08%	Disposed	228.2% (price as of 2026-08-20)
Aug. 26, 2004	MDU	S	6,900	$24.78	$170,982	77,938 Direct	-8.13%	Disposed	228.1% (price as of 2026-08-20)
Aug. 26, 2004	MDU	S	800	$24.79	$19,832	77,138 Direct	-1.03%	Disposed	228.0% (price as of 2026-08-20)
Aug. 26, 2004	MDU	M	50,000	—	—	68,300 Direct	-42.27%	Disposed	(price as of 2026-08-20)
Aug. 24, 2004	MDU	M	1,700	—	—	118,300 Direct	-1.42%	Disposed	(price as of 2026-08-20)
Aug. 24, 2004	MDU	S	1,700	$24.70	$41,990	77,138 Direct	-2.16%	Disposed	229.2% (price as of 2026-08-20)
Aug. 24, 2004	MDU	M	1,700	$19.83	$33,711	78,838 Direct	+2.20%	Acquired	310.0% (price as of 2026-08-20)
Aug. 23, 2004	MDU	M	50,000	—	—	120,000 Direct	-29.41%	Disposed	(price as of 2026-08-20)
Aug. 23, 2004	MDU	S	100	$24.77	$2,477	77,138 Direct	-0.13%	Disposed	228.2% (price as of 2026-08-20)
Aug. 23, 2004	MDU	S	1,300	$24.76	$32,188	77,238 Direct	-1.66%	Disposed	228.4% (price as of 2026-08-20)
Aug. 23, 2004	MDU	S	5,400	$24.75	$133,650	78,538 Direct	-6.43%	Disposed	228.5% (price as of 2026-08-20)
Aug. 23, 2004	MDU	S	1,400	$24.74	$34,636	83,938 Direct	-1.64%	Disposed	228.6% (price as of 2026-08-20)
Aug. 23, 2004	MDU	S	5,400	$24.73	$133,542	85,338 Direct	-5.95%	Disposed	228.8% (price as of 2026-08-20)
Aug. 23, 2004	MDU	S	3,700	$24.72	$91,464	90,738 Direct	-3.92%	Disposed	228.9% (price as of 2026-08-20)
Aug. 23, 2004	MDU	S	2,000	$24.71	$49,420	94,438 Direct	-2.07%	Disposed	229.0% (price as of 2026-08-20)
Aug. 23, 2004	MDU	S	30,700	$24.70	$758,290	96,438 Direct	-24.15%	Disposed	229.2% (price as of 2026-08-20)
Aug. 23, 2004	MDU	M	50,000	$19.83	$991,500	127,138 Direct	+64.82%	Acquired	310.0% (price as of 2026-08-20)
Aug. 20, 2004	MDU	M	50,000	—	—	170,000 Direct	-22.73%	Disposed	(price as of 2026-08-20)
Aug. 20, 2004	MDU	S	700	$24.77	$17,339	77,138 Direct	-0.90%	Disposed	228.2% (price as of 2026-08-20)
Aug. 20, 2004	MDU	S	1,600	$24.76	$39,616	77,838 Direct	-2.01%	Disposed	228.4% (price as of 2026-08-20)
Aug. 20, 2004	MDU	S	14,500	$24.75	$358,875	79,438 Direct	-15.44%	Disposed	228.5% (price as of 2026-08-20)
Aug. 20, 2004	MDU	S	3,300	$24.74	$81,642	93,938 Direct	-3.39%	Disposed	228.6% (price as of 2026-08-20)
Aug. 20, 2004	MDU	S	2,300	$24.73	$56,879	97,238 Direct	-2.31%	Disposed	228.8% (price as of 2026-08-20)
Aug. 20, 2004	MDU	S	5,100	$24.72	$126,072	99,538 Direct	-4.87%	Disposed	228.9% (price as of 2026-08-20)
Aug. 20, 2004	MDU	S	9,700	$24.71	$239,687	104,638 Direct	-8.48%	Disposed	229.0% (price as of 2026-08-20)
Aug. 20, 2004	MDU	S	12,800	$24.70	$316,160	114,338 Direct	-10.07%	Disposed	229.2% (price as of 2026-08-20)
Aug. 20, 2004	MDU	M	50,000	$19.83	$991,500	127,138 Direct	+64.82%	Acquired	310.0% (price as of 2026-08-20)
Aug. 19, 2004	MDU	M	50,000	—	—	220,000 Direct	-18.52%	Disposed	(price as of 2026-08-20)
Aug. 19, 2004	MDU	S	1,000	$24.80	$24,800	77,138 Direct	-1.28%	Disposed	227.8% (price as of 2026-08-20)
Aug. 19, 2004	MDU	S	200	$24.79	$4,958	78,138 Direct	-0.26%	Disposed	228.0% (price as of 2026-08-20)
Aug. 19, 2004	MDU	S	4,100	$24.78	$101,598	78,338 Direct	-4.97%	Disposed	228.1% (price as of 2026-08-20)
Aug. 19, 2004	MDU	S	1,800	$24.77	$44,586	82,438 Direct	-2.14%	Disposed	228.2% (price as of 2026-08-20)
Aug. 19, 2004	MDU	S	4,800	$24.76	$118,848	84,238 Direct	-5.39%	Disposed	228.4% (price as of 2026-08-20)
Aug. 19, 2004	MDU	S	33,400	$24.75	$826,650	89,038 Direct	-27.28%	Disposed	228.5% (price as of 2026-08-20)
Aug. 19, 2004	MDU	S	4,700	$24.70	$116,090	122,438 Direct	-3.70%	Disposed	229.2% (price as of 2026-08-20)
Aug. 19, 2004	MDU	M	50,000	$19.83	$991,500	127,138 Direct	+64.82%	Acquired	310.0% (price as of 2026-08-20)
Feb. 12, 2004	MDU	F	6,104	$23.72	$144,787	76,389 Direct	-7.40%	Disposed	242.8% (price as of 2026-08-20)
Aug. 20, 2003	MDU	M	60,760	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Aug. 18, 2003	MDU	G	300	—	—	570 Indirect	+111.11%	Acquired	(price as of 2026-08-20)
Aug. 18, 2003	MDU	G	4,000	—	—	30,906 Indirect	+14.87%	Acquired	(price as of 2026-08-20)
Aug. 18, 2003	MDU	G	4,000	—	—	87,926 Direct	-4.35%	Disposed	(price as of 2026-08-20)
Aug. 18, 2003	MDU	M	60,760	$21.12	$1,283,251	91,926 Direct	+194.96%	Acquired	477.4% (price as of 2026-08-20)
May 23, 2003	MDU	G	5,000	—	—	26,726 Indirect	+23.01%	Acquired	(price as of 2026-08-20)
May 23, 2003	MDU	G	5,000	—	—	31,044 Direct	-13.87%	Disposed	(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.

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
May 7, 2010	FIBK	Stock Options [F1]	Class A Common Stock [F2] (1,972)	$15.91	May 7, 2020	1,972	Acquired
May 15, 2009	FIBK	Stock Options [F1]	Common Stock (490)	$61.00	May 15, 2019	490	Acquired
May 9, 2008	FIBK	Stock Options [F2]	Common Stock (626)	$83.50	May 9, 2018	626	Acquired
May 4, 2007	FIBK	Stock Options [F1]	Common Stock (480)	$89.00	May 4, 2017	480	Acquired
May 5, 2006	FIBK	Stock Options [F2]	Common Stock (538)	$71.00	May 5, 2016	538	Acquired
May 9, 2005	FIBK	Stock Options [F2]	Common Stock (552)	$63.00	May 9, 2015	552	Acquired
Aug. 27, 2004	MDU	Empl.Stock Opt.(Right to Buy)	Common Stock (37,400)	$19.83	Feb. 15, 2011	37,400	Disposed
Aug. 27, 2004	MDU	Empl.Stock Opt.(Right to Buy)	Common Stock (30,900)	$19.83	Feb. 15, 2011	30,900	Disposed
Aug. 26, 2004	MDU	Empl.Stock Opt.(Right to Buy)	Common Stock (50,000)	$19.83	Feb. 15, 2011	50,000	Disposed
Aug. 24, 2004	MDU	Empl.Stock Opt.(Right to Buy)	Common Stock (1,700)	$19.83	Feb. 15, 2011	1,700	Disposed
Aug. 23, 2004	MDU	Empl.Stock Opt.(Right to Buy)	Common Stock (50,000)	$19.83	Feb. 15, 2011	50,000	Disposed
Aug. 20, 2004	MDU	Empl.Stock Opt.(Right to Buy)	Common Stock (50,000)	$19.83	Feb. 15, 2011	50,000	Disposed
Aug. 19, 2004	MDU	Empl.Stock Opt.(Right to Buy)	Common Stock (50,000)	$19.83	Feb. 15, 2011	50,000	Disposed
Aug. 20, 2003	MDU	Empl.Stock Opt.(Right to Buy)	Common Stock (60,760)	$21.12	Feb. 10, 2008	60,760	Disposed

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

Initial ownership (Form 3) 2 holdings

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

Date	Ticker	Security	Shares	Ownership
May 10, 2005	FIBK	Common Stock [F1]	206	Direct
May 10, 2005	FIBK	Stock Options [F2]→ Common Stock (552)	552	Direct

Compensation (DEF 14A)

Matched by name from proxy statements (DEF 14A) — verify against the filing.

MDU

Fiscal year	Salary	Bonus	Stock awards	Option awards	Non-equity incentive	Pension change	Other	Total
2006	$468,750	—	$218,206	—	$1,000,000	$161,547	$25,110	$1,873,613

Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.