Gary L Warren

Insider

First SEC filing: May 21, 2018 · Latest: May 21, 2018

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Insider at

0 buys (P) 0 sells (S) Net: $0 + 17 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

No open-market trades on record; showing all filings.

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
May 17, 2018	NPKI	A	13,953	—	—	226,706 Direct	+6.56%	Acquired	(price as of 2026-08-20)
May 18, 2017	NPKI	A	19,230	—	—	212,753 Direct	+9.94%	Acquired	(price as of 2026-08-20)
Dec. 6, 2016	NPKI	M	10,000	$7.66	$76,600	0 Direct	-100.00%	Disposed	81.1% (price as of 2026-08-20)
Dec. 6, 2016	NPKI	F	9,405	$7.66	$72,042	193,523 Direct	-4.63%	Disposed	81.1% (price as of 2026-08-20)
Dec. 6, 2016	NPKI	M	10,000	$7.17	$71,700	202,928 Direct	+5.18%	Acquired	93.4% (price as of 2026-08-20)
May 19, 2016	NPKI	A	34,722	—	—	192,928 Direct	+21.95%	Acquired	(price as of 2026-08-20)
May 22, 2015	NPKI	A	16,666	—	—	158,206 Direct	+11.77%	Acquired	(price as of 2026-08-20)
May 22, 2014	NPKI	A	13,345	—	—	141,540 Direct	+10.41%	Acquired	(price as of 2026-08-20)
June 6, 2013	NPKI	A	13,123	—	—	128,195 Direct	+11.40%	Acquired	(price as of 2026-08-20)
June 7, 2012	NPKI	A	23,423	—	—	115,072 Direct	+25.56%	Acquired	(price as of 2026-08-20)
June 9, 2011	NPKI	A	13,691	—	—	91,649 Direct	+17.56%	Acquired	(price as of 2026-08-20)
June 10, 2010	NPKI	A	20,194	—	—	77,958 Direct	+34.96%	Acquired	(price as of 2026-08-20)
June 10, 2009	NPKI	A	37,764	—	—	57,764 Direct	+188.82%	Acquired	(price as of 2026-08-20)
June 11, 2008	NPKI	A	10,000	—	—	20,000 Direct	+100.00%	Acquired	(price as of 2026-08-20)
June 13, 2007	NPKI	A	10,000	—	—	10,000 Direct	—	Acquired	(price as of 2026-08-20)
Dec. 28, 2006	NPKI	A	10,000	—	—	10,000 Direct	—	Acquired	(price as of 2026-08-20)
Dec. 15, 2005	NPKI	M	10,000	$8.34	$83,400	10,000 Direct	—	Acquired	66.3% (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.

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

Date	Ticker	Security	Underlying	Exercise price	Expiration	Shares	A/D
Dec. 6, 2016	NPKI	Non-Qualified Stock Option (right to buy)	Common Stock (10,000)	$7.17	Dec. 28, 2016	10,000	Disposed
Dec. 28, 2006	NPKI	Stock Options (right to buy)	Common Stock (10,000)	$7.17	Dec. 28, 2016	10,000	Acquired
Dec. 15, 2005	NPKI	Stock Options	Options (10,000)	$8.34	Dec. 15, 2015	10,000	Acquired

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

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

Date	Ticker	Security	Shares	Ownership
Dec. 22, 2005	NPKI	Stock Options→ Stock Options (10,000)	10,000	Direct