Michael A Lewis Sells $28.7K of NPK International Inc (NPKI) — SEC Form 4, Aug 19, 2026
Open-Market Net Sale · SEC Form 4
−$28,705
10b5-1 Plan
Equity position changed by -1.5%
Equity Position
136K sh
137,878 → 135,865
Equity Change
-1.5%
shares held after vs before
Filing Lag
2 business days
within 2-day SEC deadline
Form 4 · Statement of Changes in Beneficial Ownership
Reporting Owner
| Name | Relationship |
|---|---|
| Michael A Lewis CIK 0001423238 |
Director
|
Michael A Lewis at NPK International Inc
Full insider history
Bought (12 mo)
—
Sold (12 mo)
$112,459
More from this insider at NPK International Inc
| 2026-05-21 | Award | — | View |
| 2026-05-19 | Sell | -$30,802 | View |
| 2026-02-25 | Sell | -$28,796 | View |
| 2025-11-25 | Sell | -$24,156 | View |
| 2025-08-26 | Sell | -$20,796 | View |
Non-Derivative Securities Transactions
Footnotes (2)
- F1
- The reported sale of 2,013 shares occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 7, 2025. Show more
- F2
- The price reported is the weighted average price. These shares were sold in multiple transactions in the open market at prices ranging from $14.15 to $14.40, 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. Show more
Related filings at NPK International Inc
Institutional Holders
13F holders · Jun 30, 2026
255
institutional managers reporting a position
Largest by reported value
- Black Rock, Inc. $126M
- Ameriprise Financial, Inc. $71.4M
- Dimensional Fund Advisors Lp $57.9M
5%+ Holders · 13D/G
2 filers
-
Black Rock, Inc. 8.4%
Other insiders at NPK International Inc
GET /v1/forms/4/0001423238-26-000010
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