Gregg Piontek

NPKI

Gregg Piontek serves as officer: Senior Vice President and CFO at NPK International Inc. (NPKI). This page tracks their complete SEC Form 4 insider trading history including stock purchases and sales.

Total Buys

1 trades

$25.5K

Total Sells

5 trades

$2.83M

Net Position

Net Seller

$2.80M

Companies Traded

NPKI

Active Period

Aug 2022 – Apr 2026

6 total trades

Most Recent

Sell NPKI

Apr 10, 2026 · $225.7K

Gregg Piontek's Insider Trading at NPK International Inc. (NPKI)

Buys

1 · $25.5K

Sells

5 · $2.83M

Total Shares Bought

10,000

Total Shares Sold

215,669

NPKI Price Chart

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Date	Type	Shares	Avg Price	Value	Shares After
Apr 10, 2026	Sell	15,000	$15.05	$225.7K	819,326
Apr 3, 2026	Sell	35,000	$14.51	$507.9K	834,326
Mar 26, 2026	Sell	15,000	$15.03	$225.4K	869,326
Mar 5, 2026	Sell	108,590	$14.07	$1.53M	919,326
Jun 1, 2025	Sell	42,079	$8.09	$340.4K	0
Aug 9, 2022	Buy	10,000	$2.55	$25.5K	65,000