Brent L Korb

Insider

First SEC filing: Aug. 4, 2008 · Latest: Jan. 19, 2010

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

Insider at

NX selling Sept. 14, 2018

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 56 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

56 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Dec. 5, 2018	NX	A	13,600	—	—	112,745 Direct	+13.72%	Acquired	(price as of 2026-08-20)
Dec. 2, 2018	NX	F	3,660	$15.79	$57,791	99,145 Direct	-3.56%	Disposed	29.3% (price as of 2026-08-20)
Sept. 14, 2018	NX	M	11,800	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Sept. 14, 2018	NX	S	11,800	$19.26	$227,268	102,805 Direct	-10.30%	Disposed	6.0% (price as of 2026-08-20)
Sept. 14, 2018	NX	M	11,800	$7.83	$92,394	114,605 Direct	+11.48%	Acquired	160.7% (price as of 2026-08-20)
Sept. 13, 2018	NX	M	50,000	—	—	11,800 Direct	-80.91%	Disposed	(price as of 2026-08-20)
Sept. 13, 2018	NX	S	50,000	$19.09	$954,500	102,805 Direct	-32.72%	Disposed	6.9% (price as of 2026-08-20)
Sept. 13, 2018	NX	M	50,000	$7.83	$391,500	152,805 Direct	+48.64%	Acquired	160.7% (price as of 2026-08-20)
Aug. 1, 2018	NX	M 10b5-1	25,098	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Aug. 1, 2018	NX	S 10b5-1	25,098	$16.97	$425,913	102,805 Direct	-19.62%	Disposed	20.3% (price as of 2026-08-20)
Aug. 1, 2018	NX	M 10b5-1	25,098	$15.32	$384,501	127,903 Direct	+24.41%	Acquired	33.3% (price as of 2026-08-20)
July 31, 2018	NX	M 10b5-1	63,400	—	—	25,098 Direct	-71.64%	Disposed	(price as of 2026-08-20)
July 31, 2018	NX	S 10b5-1	63,400	$17.52	$1,110,768	102,805 Direct	-38.15%	Disposed	16.5% (price as of 2026-08-20)
July 31, 2018	NX	M 10b5-1	63,400	$15.32	$971,288	166,205 Direct	+61.67%	Acquired	33.3% (price as of 2026-08-20)
July 30, 2018	NX	M 10b5-1	11,502	—	—	88,498 Direct	-11.50%	Disposed	(price as of 2026-08-20)
July 30, 2018	NX	S 10b5-1	11,502	$17.26	$198,525	102,805 Direct	-10.06%	Disposed	18.3% (price as of 2026-08-20)
July 30, 2018	NX	M 10b5-1	11,502	$15.32	$176,211	114,307 Direct	+11.19%	Acquired	33.3% (price as of 2026-08-20)
Dec. 13, 2017	NX	F	982	$23.75	$23,322	102,805 Direct	-0.95%	Disposed	-14.0% (price as of 2026-08-20)
Dec. 13, 2017	NX	A	3,588	—	—	103,787 Direct	+3.58%	Acquired	(price as of 2026-08-20)
Dec. 7, 2017	NX	A	7,900	—	—	100,199 Direct	+8.56%	Acquired	(price as of 2026-08-20)
Dec. 3, 2017	NX	F	2,380	$21.95	$52,241	92,299 Direct	-2.51%	Disposed	-7.0% (price as of 2026-08-20)
Sept. 25, 2017	NX	S	17,500	$21.15	$370,125	94,679 Direct	-15.60%	Disposed	-3.5% (price as of 2026-08-20)
Dec. 19, 2016	NX	F	2,708	$20.50	$55,514	112,179 Direct	-2.36%	Disposed	-0.4% (price as of 2026-08-20)
Dec. 19, 2016	NX	A	9,900	—	—	114,887 Direct	+9.43%	Acquired	(price as of 2026-08-20)
Dec. 5, 2016	NX	F	2,708	$20.05	$54,295	104,987 Direct	-2.51%	Disposed	1.8% (price as of 2026-08-20)
Nov. 30, 2016	NX	A	33,300	—	—	33,300 Direct	—	Acquired	(price as of 2026-08-20)
Nov. 30, 2016	NX	A	10,700	—	—	107,695 Direct	+11.03%	Acquired	(price as of 2026-08-20)
Dec. 5, 2015	NX	F	2,571	$18.97	$48,772	96,995 Direct	-2.58%	Disposed	7.6% (price as of 2026-08-20)
Dec. 2, 2015	NX	A	28,000	—	—	28,000 Direct	—	Acquired	(price as of 2026-08-20)
Dec. 2, 2015	NX	A	9,300	—	—	99,566 Direct	+10.30%	Acquired	(price as of 2026-08-20)
Dec. 3, 2014	NX	A	15,800	—	—	15,800 Direct	—	Acquired	(price as of 2026-08-20)
Dec. 3, 2014	NX	A	8,700	—	—	90,266 Direct	+10.67%	Acquired	(price as of 2026-08-20)
Nov. 30, 2014	NX	M	23,200	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Nov. 30, 2014	NX	D	23,200	$19.78	$458,896	81,566 Direct	-22.14%	Disposed	3.2% (price as of 2026-08-20)
Nov. 30, 2014	NX	M	23,200	$19.78	$458,896	104,766 Direct	+28.44%	Acquired	3.2% (price as of 2026-08-20)
Nov. 30, 2014	NX	F	3,173	$19.78	$62,762	81,566 Direct	-3.74%	Disposed	3.2% (price as of 2026-08-20)
Dec. 5, 2013	NX	A	18,200	—	—	18,200 Direct	—	Acquired	(price as of 2026-08-20)
Dec. 5, 2013	NX	A	9,900	—	—	84,739 Direct	+13.23%	Acquired	(price as of 2026-08-20)
Dec. 2, 2013	NX	F	2,435	$17.84	$43,440	74,839 Direct	-3.15%	Disposed	14.4% (price as of 2026-08-20)
Dec. 5, 2012	NX	A	43,700	—	—	43,700 Direct	—	Acquired	(price as of 2026-08-20)
Dec. 5, 2012	NX	A	9,400	—	—	77,274 Direct	+13.85%	Acquired	(price as of 2026-08-20)
Dec. 2, 2012	NX	F	3,937	$20.92	$82,362	67,874 Direct	-5.48%	Disposed	-2.4% (price as of 2026-08-20)
Dec. 3, 2011	NX	F	6,197	$15.17	$94,008	71,811 Direct	-7.94%	Disposed	34.6% (price as of 2026-08-20)
Dec. 1, 2011	NX	A	23,200	—	—	23,200 Direct	—	Acquired	(price as of 2026-08-20)
Nov. 30, 2011	NX	A	54,700	—	—	54,700 Direct	—	Acquired	(price as of 2026-08-20)
Nov. 30, 2011	NX	A	11,600	—	—	78,008 Direct	+17.47%	Acquired	(price as of 2026-08-20)
Aug. 1, 2011	NX	F	10,935	$15.67	$171,351	66,407 Direct	-14.14%	Disposed	30.3% (price as of 2026-08-20)
Dec. 1, 2010	NX	A	41,900	—	—	41,900 Direct	—	Acquired	(price as of 2026-08-20)
Dec. 1, 2010	NX	A	8,900	—	—	77,342 Direct	+13.00%	Acquired	(price as of 2026-08-20)
March 31, 2010	NX	A	0	$16.84	—	68,442 Direct	0.00%	Acquired	21.2% (price as of 2026-08-20)
Dec. 31, 2009	NX	A	0	$17.26	—	68,530 Direct	0.00%	Acquired	18.3% (price as of 2026-08-20)
Dec. 2, 2009	NX	A	37,500	$16.21	$607,875	37,500 Direct	—	Acquired	25.9% (price as of 2026-08-20)
Dec. 2, 2009	NX	A	10,800	—	—	68,527 Direct	+18.71%	Acquired	(price as of 2026-08-20)
Sept. 30, 2009	NX	J	0	$14.09	—	58,822 Direct	0.00%	Acquired	44.9% (price as of 2026-08-20)
June 30, 2009	NX	J	0	$11.46	—	58,822 Direct	0.00%	Acquired	78.1% (price as of 2026-08-20)
March 31, 2009	NX	J	0	$7.66	—	58,822 Direct	0.00%	Acquired	166.5% (price as of 2026-08-20)
April 23, 2008	NX	A	14,071	—	—	18,274 Direct	+334.78%	Acquired	(price as of 2026-08-20)
April 23, 2008	NX	A	7,550	$15.02	$113,401	7,550 Direct	—	Acquired	35.9% (price as of 2026-08-20)
April 23, 2008	NX	A	58,546	—	—	58,546 Direct	—	Acquired	(price as of 2026-08-20)
April 23, 2008	NX	A	14,071	—	—	19,424 Direct	+262.86%	Acquired	(price as of 2026-08-20)
April 23, 2008	NX	A	58,546	—	—	58,546 Direct	—	Acquired	(price as of 2026-08-20)
April 23, 2008	NX	A	14,071	—	—	19,424 Direct	+262.86%	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
Sept. 14, 2018	NX	Stock Options (Right to Buy)	Common Stock (11,800)	$7.83	Dec. 3, 2018	11,800	Disposed
Sept. 13, 2018	NX	Stock Options (Right to Buy)	Common Stock (50,000)	$7.83	Dec. 3, 2018	50,000	Disposed
Aug. 1, 2018	NX	Stock Options (Right to Buy)	Common Stock (25,098)	$15.32	Aug. 1, 2018	25,098	Disposed
July 31, 2018	NX	Stock Options (Right to Buy)	Common Stock (63,400)	$15.32	Aug. 1, 2018	63,400	Disposed
July 30, 2018	NX	Stock Options (Right to Buy)	Common Stock (11,502)	$15.32	Aug. 1, 2018	11,502	Disposed
Nov. 30, 2016	NX	Stock Options (Right to Buy)	Common Stock (33,300)	$19.45	Nov. 30, 2026	33,300	Acquired
Dec. 2, 2015	NX	Stock Options (Right to Buy)	Common Stock (28,000)	$19.31	Dec. 2, 2025	28,000	Acquired
Dec. 3, 2014	NX	Stock Options (Right to Buy)	Common Stock (15,800)	$20.28	Dec. 3, 2024	15,800	Acquired
Nov. 30, 2014	NX	Restricted Stock Units	Common Stock (23,200)	—	—	23,200	Disposed
Dec. 5, 2013	NX	Stock Options (Right to Buy)	Common Stock (18,200)	$17.63	Dec. 5, 2023	18,200	Acquired
Dec. 5, 2012	NX	Stock Options (Right to Buy)	Common Stock (43,700)	$21.11	Dec. 5, 2022	43,700	Acquired
Dec. 1, 2011	NX	Restricted Stock Units	Common Stock (23,200)	—	—	23,200	Acquired
Nov. 30, 2011	NX	Stock Options (Right to Buy)	Common Stock (54,700)	$15.08	Nov. 30, 2021	54,700	Acquired
Dec. 1, 2010	NX	Stock Options (Right to Buy)	Common Stock (41,900)	$16.90	Dec. 1, 2020	41,900	Acquired
Dec. 2, 2009	NX	Stock Options (Right to Buy)	Common Stock (37,500)	$16.21	Dec. 2, 2019	37,500	Acquired
April 23, 2008	NX	Phantom Stock Units	Common Stock (7,550)	—	—	7,550	Acquired
April 23, 2008	NX	Employee Stock Option (right to buy)	Common Stock (58,546)	$15.02	April 23, 2018	58,546	Acquired
April 23, 2008	NX	Employee Stock Option (right to buy)	Common Stock (58,546)	$15.02	April 23, 2018	58,546	Acquired

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
Aug. 4, 2008	NX	Common Stock	4,239	Direct
Aug. 4, 2008	NX	Phantom Stock Units [F1]→ Common Stock (7,565)	7,565	Direct

Compensation (DEF 14A)

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

NX

Fiscal year	Salary	Bonus	Stock awards	Option awards	Non-equity incentive	Pension change	Other	Total
2019	$279,314	—	$373,462	—	—	$295,228	$968,822	$1,916,826
2018	$418,000	—	$500,940	—	$463,828	$140,986	$38,320	$1,562,074
2017	$418,000	—	$455,688	$221,445	$82,943	$165,149	$36,939	$1,380,164

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