NPK International Inc.
NPK International Inc. (NPKI) Insider Trading
Form 4 buy vs sell counts, ratio, and sentiment — switch this quarter or last 12 months; chart and transactions below.
SEC EDGAR · FMP · NPKI · as of Jun 8, 2026
Activity summary
Buy transactions
0
P-Purchase only
Sell transactions
18
12 Months
Buy/Sell ratio
0.00
Buy/Sell (by trades)
Overall sentiment
NPK International Inc. insiders have been primarily selling shares over the past 12 Months. Selling activity is often driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment toward the company.
▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · Buy = P-Purchase only · Sell = S-Sale only
As of Jun 8, 2026
NPKI insider buying and selling by quarter
NPKI insider selling · NPKI insider buying stocks · quarterly insider activity
Mobile shows last 4Q · Desktop shows full 8Q
▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · last 8 quarters
As of Jun 8, 2026
Active insiders
Most active in past 12 months · NPKI ceo insider trading
Showing all insiders · Click a card to filter the transactions table below
▸ Aggregated from reportingName · top 5 by trade count (12M) · no extra API
Recent insider transactions
NPKI executive sell shares · NPKI board member insider trading · NPKI insider trading SEC filing
Scroll horizontally to see all columns
| Date | Insider | Type | Shares | Value | Filing |
|---|---|---|---|---|---|
| Jun 3, 2026 | LANIGAN MATTHEW President & CEO · Director | Sale | 167,375 | $2.42M⚡ | Form 4 |
| Jun 1, 2026 | Fruge Mary Celeste VP, General Counsel | Option | 17,274 | — | Form 4 |
| Jun 1, 2026 | Fruge Mary Celeste VP, General Counsel | Other | 3,833 | $55K | Form 4 |
| Jun 1, 2026 | Fruge Mary Celeste VP, General Counsel | Other | 5,218 | $75K | Form 4 |
| Jun 1, 2026 | Fruge Mary Celeste VP, General Counsel | Other | 6,797 | $97K | Form 4 |
| Jun 1, 2026 | LANIGAN MATTHEW President & CEO · Director | Option | 100,188 | — | Form 4 |
| Jun 1, 2026 | LANIGAN MATTHEW President & CEO · Director | Other | 22,232 | $318K | Form 4 |
| Jun 1, 2026 | LANIGAN MATTHEW President & CEO · Director | Other | 27,894 | $399K | Form 4 |
| Jun 1, 2026 | LANIGAN MATTHEW President & CEO · Director | Other | 39,423 | $564K | Form 4 |
| Jun 1, 2026 | Piontek Gregg Senior Vice President and CFO | Option | 40,379 | — | Form 4 |
| Jun 1, 2026 | Piontek Gregg Senior Vice President and CFO | Other | 8,959 | $128K | Form 4 |
| Jun 1, 2026 | Piontek Gregg Senior Vice President and CFO | Other | 15,889 | $227K | Form 4 |
| Jun 1, 2026 | Piontek Gregg Senior Vice President and CFO | Other | 11,241 | $161K | Form 4 |
| Jun 1, 2026 | Briggs Lori VP & President, Ind. Solutions | Option | 24,340 | — | Form 4 |
| Jun 1, 2026 | Briggs Lori VP & President, Ind. Solutions | Other | 5,401 | $77K | Form 4 |
| Jun 2, 2026 | Briggs Lori VP & President, Ind. Solutions | Sale | 10,446 | $152K | Form 4 |
| Jun 1, 2026 | Briggs Lori VP & President, Ind. Solutions | Other | 9,577 | $137K | Form 4 |
| Jun 1, 2026 | Briggs Lori VP & President, Ind. Solutions | Other | 6,777 | $97K | Form 4 |
| May 20, 2026 | ROBESON ROSE M Director | Award | 10,862 | — | Form 4 |
| May 20, 2026 | MINGE JOHN C Director | Award | 8,558 | — | Form 4 |
| May 20, 2026 | Meer Claudia Michel Director | Award | 8,558 | — | Form 4 |
| May 20, 2026 | Lewis Michael A Director | Award | 8,558 | — | Form 4 |
| May 20, 2026 | LARSON RODERICK A. Director | Award | 8,558 | — | Form 4 |
| May 20, 2026 | CUTILLO JOSEPH A Director | Award | 8,558 | — | Form 4 |
| May 19, 2026 | Piontek Gregg Senior Vice President and CFO | Award | 34,566 | — | Form 4 |
LANIGAN MATTHEW
President & CEO · Director
Date
Jun 3
Shares
167,375
Price
$14.43
Value
$2.42M ⚡
Fruge Mary Celeste
VP, General Counsel
Date
Jun 1
Shares
3,833
Price
$14.31
Value
$55K
Fruge Mary Celeste
VP, General Counsel
Date
Jun 1
Shares
5,218
Price
$14.31
Value
$75K
Fruge Mary Celeste
VP, General Counsel
Date
Jun 1
Shares
6,797
Price
$14.31
Value
$97K
LANIGAN MATTHEW
President & CEO · Director
Date
Jun 1
Shares
100,188
Price
—
Value
—
LANIGAN MATTHEW
President & CEO · Director
Date
Jun 1
Shares
22,232
Price
$14.31
Value
$318K
LANIGAN MATTHEW
President & CEO · Director
Date
Jun 1
Shares
27,894
Price
$14.31
Value
$399K
LANIGAN MATTHEW
President & CEO · Director
Date
Jun 1
Shares
39,423
Price
$14.31
Value
$564K
Piontek Gregg
Senior Vice President and CFO
Date
Jun 1
Shares
40,379
Price
—
Value
—
Piontek Gregg
Senior Vice President and CFO
Date
Jun 1
Shares
8,959
Price
$14.31
Value
$128K
Piontek Gregg
Senior Vice President and CFO
Date
Jun 1
Shares
15,889
Price
$14.31
Value
$227K
Piontek Gregg
Senior Vice President and CFO
Date
Jun 1
Shares
11,241
Price
$14.31
Value
$161K
Briggs Lori
VP & President, Ind. Solutions
Date
Jun 1
Shares
24,340
Price
—
Value
—
Briggs Lori
VP & President, Ind. Solutions
Date
Jun 1
Shares
5,401
Price
$14.31
Value
$77K
Briggs Lori
VP & President, Ind. Solutions
Date
Jun 2
Shares
10,446
Price
$14.58
Value
$152K
Briggs Lori
VP & President, Ind. Solutions
Date
Jun 1
Shares
9,577
Price
$14.31
Value
$137K
Briggs Lori
VP & President, Ind. Solutions
Date
Jun 1
Shares
6,777
Price
$14.31
Value
$97K
Piontek Gregg
Senior Vice President and CFO
Date
May 19
Shares
34,566
Price
—
Value
—
⚡ = value ≥ $1M · Award/Option price shows — · formType=4 · securityName=Common Stock · url → sec.gov/Archives/edgar
▸ Source: SEC EDGAR · Form 4 filings · ⚡ = value ≥ $1M · Award/Option price shows —
About NPKI insider trading
NPKI insider trades
NPK International Inc. (NPKI) insider trading data is sourced from SEC Form 4 filings submitted by corporate insiders, including LANIGAN MATTHEW (President & CEO · Director), Piontek Gregg (Senior Vice President and CFO), Fruge Mary Celeste (VP, General Counsel). Over the past 12 months, 5 insiders have filed transactions with the SEC. NPKI insiders have been primarily selling, which may reflect pre-scheduled Rule 10b5-1 plan executions.
For NPK International Inc.'s institutional ownership breakdown and insider ownership percentage, see the Ownership tab → Ownership tab →
Frequently asked questions
NPKI insider trading · 5 questionsThe insiders of NPK International Inc. (NPKI) include executives and directors such as LANIGAN MATTHEW (President & CEO · Director), Piontek Gregg (Senior Vice President and CFO), Fruge Mary Celeste (VP, General Counsel), among others. Over the past 12 months, 5 insiders have filed Form 4 transactions with the SEC. Insider transactions are required to be reported within 2 business days of the trade date.
▸ Source: FMP /stable/insider-trading/search · SEC EDGAR Form 3 & 4 · acquisitionOrDisposition A=Buy, D=Sell · RSU vesting (M-Exempt) excluded from sentiment bar · As of Jun 8, 2026