Deborah S Parker

Insider

First SEC filing: July 1, 2011 · Latest: July 1, 2011

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

NI selling June 12, 2015

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
June 12, 2015	NI	S	3,100	$46.31	$143,561	11,842 Direct	-20.75%	Disposed	130.2% (price as of 2026-08-20)
June 12, 2015	NI	S	329	$46.03	$15,144	14,942 Direct	-2.15%	Disposed	131.6% (price as of 2026-08-20)
May 12, 2015	NI	A	2,699	$44.46	$119,998	15,202 Direct	+21.59%	Acquired	139.8% (price as of 2026-08-20)
Feb. 20, 2015	NI	S	3,808	$43.50	$165,648	12,503 Direct	-23.35%	Disposed	145.1% (price as of 2026-08-20)
May 13, 2014	NI	A	3,346	—	—	15,991 Direct	+26.46%	Acquired	(price as of 2026-08-20)
May 14, 2013	NI	A	3,695	—	—	12,284 Direct	+43.02%	Acquired	(price as of 2026-08-20)
Sept. 13, 2012	NI	S	9,637	$25.58	$246,514	8,428 Direct	-53.35%	Disposed	316.8% (price as of 2026-08-20)
May 15, 2012	NI	A	4,285	—	—	17,946 Direct	+31.37%	Acquired	(price as of 2026-08-20)
June 30, 2011	NI	A	679	—	—	23,807 Direct	+2.94%	Acquired	(price as of 2026-08-20)
June 1, 2011	NI	A	3,900	—	—	13,537 Direct	+40.47%	Acquired	(price as of 2026-08-20)
March 31, 2011	NI	A	1,075	—	—	22,870 Direct	+4.93%	Acquired	(price as of 2026-08-20)
Dec. 31, 2010	NI	A	1,171	—	—	21,535 Direct	+5.75%	Acquired	(price as of 2026-08-20)
Sept. 30, 2010	NI	A	1,185	—	—	20,093 Direct	+6.27%	Acquired	(price as of 2026-08-20)
June 30, 2010	NI	A	1,422	—	—	18,648 Direct	+8.25%	Acquired	(price as of 2026-08-20)
March 31, 2010	NI	A	1,305	—	—	16,962 Direct	+8.33%	Acquired	(price as of 2026-08-20)
Dec. 31, 2009	NI	A	1,341	—	—	15,422 Direct	+9.52%	Acquired	(price as of 2026-08-20)
Sept. 30, 2009	NI	A	1,485	—	—	13,849 Direct	+12.01%	Acquired	(price as of 2026-08-20)
Aug. 20, 2009	NI	A	212	—	—	12,365 Direct	+1.74%	Acquired	(price as of 2026-08-20)
June 30, 2009	NI	A	1,769	—	—	12,153 Direct	+17.04%	Acquired	(price as of 2026-08-20)
May 20, 2009	NI	A	220	—	—	10,384 Direct	+2.16%	Acquired	(price as of 2026-08-20)
March 31, 2009	NI	A	2,105	—	—	10,164 Direct	+26.12%	Acquired	(price as of 2026-08-20)
March 6, 2009	NI	P	9,500	$7.97	$75,715	9,500 Direct	—	Acquired	1237.6% (price as of 2026-08-20)
Feb. 20, 2009	NI	A	208	—	—	8,059 Direct	+2.65%	Acquired	(price as of 2026-08-20)
Dec. 31, 2008	NI	A	1,880	—	—	7,852 Direct	+31.48%	Acquired	(price as of 2026-08-20)
Nov. 20, 2008	NI	A	128	—	—	5,972 Direct	+2.19%	Acquired	(price as of 2026-08-20)
Sept. 30, 2008	NI	A	1,397	—	—	5,843 Direct	+31.42%	Acquired	(price as of 2026-08-20)
Aug. 20, 2008	NI	A	61	—	—	4,446 Direct	+1.39%	Acquired	(price as of 2026-08-20)
June 30, 2008	NI	A	1,151	—	—	4,385 Direct	+35.59%	Acquired	(price as of 2026-08-20)
May 20, 2008	NI	A	40	—	—	3,234 Direct	+1.25%	Acquired	(price as of 2026-08-20)
March 31, 2008	NI	A	493	—	—	3,194 Direct	+18.25%	Acquired	(price as of 2026-08-20)
Feb. 20, 2008	NI	A	34	—	—	2,701 Direct	+1.27%	Acquired	(price as of 2026-08-20)
Dec. 31, 2007	NI	A	450	—	—	2,667 Direct	+20.30%	Acquired	(price as of 2026-08-20)
Nov. 20, 2007	NI	A	28	—	—	2,217 Direct	+1.28%	Acquired	(price as of 2026-08-20)
Sept. 28, 2007	NI	A	444	—	—	2,189 Direct	+25.44%	Acquired	(price as of 2026-08-20)
Aug. 28, 2007	NI	A	1,745	—	—	1,745 Direct	—	Acquired	(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
June 30, 2011	NI	Phantom Stock	Common Stock (679)	$0.00	—	679	Acquired
March 31, 2011	NI	Phantom Stock	Common Stock (1,075)	$0.00	—	1,075	Acquired
Dec. 31, 2010	NI	Phantom Stock	Common Stock (1,171)	$0.00	—	1,171	Acquired
Sept. 30, 2010	NI	Phantom Stock	Common Stock (1,185)	$0.00	—	1,185	Acquired
June 30, 2010	NI	Phantom Stock	Common Stock (1,422)	$0.00	—	1,422	Acquired
March 31, 2010	NI	Phantom Stock	Common Stock (1,305)	$0.00	—	1,305	Acquired
Dec. 31, 2009	NI	Phantom Stock	Common Stock (1,341)	$0.00	—	1,341	Acquired
Sept. 30, 2009	NI	Phantom Stock	Common Stock (1,485)	$0.00	—	1,485	Acquired
Aug. 20, 2009	NI	Phantom Stock	Common Stock (212)	$0.00	—	212	Acquired
June 30, 2009	NI	Phantom Stock	Common Stock (1,769)	$0.00	—	1,769	Acquired
May 20, 2009	NI	Phantom Stock	Common Stock (220)	$0.00	—	220	Acquired
March 31, 2009	NI	Phantom Stock	Common Stock (2,105)	$0.00	—	2,105	Acquired
Feb. 20, 2009	NI	Phantom Stock	Common Stock (208)	$0.00	—	208	Acquired
Dec. 31, 2008	NI	Phantom Stock	Common Stock (1,880)	$0.00	—	1,880	Acquired
Nov. 20, 2008	NI	Phantom Stock	Common Stock (128)	$0.00	Aug. 8, 1988	128	Acquired
Sept. 30, 2008	NI	Phantom Stock	Common Stock (1,397)	$0.00	Aug. 8, 1988	1,397	Acquired
Aug. 20, 2008	NI	Phantom Stock	Common Stock (61)	$0.00	Aug. 8, 1988	61	Acquired
June 30, 2008	NI	Phantom Stock	Common Stock (1,151)	$0.00	Aug. 8, 1988	1,151	Acquired
May 20, 2008	NI	Phantom Stock	Common Stock (40)	$0.00	Aug. 8, 1988	40	Acquired
March 31, 2008	NI	Phantom Stock	Common Stock (493)	$0.00	Aug. 8, 1988	493	Acquired
Feb. 20, 2008	NI	Phantom Stock	Common Stock (34)	$0.00	Aug. 8, 1988	34	Acquired
Dec. 31, 2007	NI	Phantom Stock	Common Stock (450)	$0.00	Aug. 8, 1988	450	Acquired
Nov. 20, 2007	NI	Phantom Stock	Common Stock (28)	$0.00	Aug. 8, 1988	28	Acquired
Sept. 28, 2007	NI	Phantom Stock	Common Stock (444)	$0.00	Aug. 8, 1988	444	Acquired
Aug. 28, 2007	NI	Phantom Stock	Common Stock (1,745)	$0.00	Aug. 8, 1988	1,745	Acquired

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