Form 4 • Statement of Changes in Beneficial Ownership
Type
Sell
Net shares
-108,590
% of shares
-10.26%
Amount (USD)
$1,528,055
Insider confidence score
23.8 out of 100
Positive
Negative
Security
Common Stock
Action
Exercise
Date
2026-03-04
Code
M
Net shares
+73,590.0
Price per Share
$4.32
Amount (USD)
$317,908.80
Acquired/Disposed
Acquired
Shares Owned Before
919,326.0
Shares Owned After
992,916.0
Security
Common Stock
Action
Sell
Date
2026-03-04
Code
S
Net shares
-73,590.0
Price per Share
$14.10
Amount (USD)
$1,037,464.46
Acquired/Disposed
Disposed
Shares Owned Before
992,916.0
Shares Owned After
919,326.0
Security
Common Stock
Action
Sell
Date
2026-03-04
Code
S
Net shares
-35,000.0
Price per Share
$14.02
Amount (USD)
$490,591.50
Acquired/Disposed
Disposed
Shares Owned Before
919,326.0
Shares Owned After
884,326.0
Security
Non-Qualified Stock Option (right to buy)
Action
Exercise
Date
2026-03-04
Code
M
Net shares
-73,590.0
Acquired/Disposed
Disposed
Shares Owned Before
73,590.0
Shares Owned After
0.0
1. The reported exercise of 73,590 options and subsequent sale of the shares acquired upon exercise occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 3, 2025.
2. The price reported is the weighted average price. These options were sold in multiple transactions in the open market at prices ranging from $14.00 to $14.31, inclusive. The reporting person undertakes to provide to NPK International Inc., any security holder of NPK International Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of options sold at each separate price within the range set forth in footnote (2) to this Form 4.
3. The reported sale of 35,000 shares occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 3, 2025.
4. The price reported is the weighted average price. These shares were sold in multiple transactions in the open market at prices ranging from $13.68 to $14.31, inclusive. The reporting person undertakes to provide to NPK International Inc., any security holder of NPK International Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in footnote (2) to this Form 4.
5. These shares are indirectly held by Trust.
ℹ️ Filed under Rule 10b5-1 trading plan
This page is for informational purposes only. While we strive for accuracy, the summary may contain inaccuracies or omissions. Please refer to the official SEC filing for authoritative information. Open the SEC filing.