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sellWeak cluster of 310b5-1 plan

Lori Briggs sold $76k of NPKI

VP & President, Ind. Solutions at NPK International Inc.. 8,005 shares at an average of $9.51, traded Aug 11, 2025, filed Aug 12, 2025.

Warning score
18
Value
$76k
8,005 shares
Holdings after
252,621
-3% from before
From 52-week low
+92%
low $4.95, close $9.49
From 52-week high
0%
high $9.49, as of Aug 11, 2025

Score components

  • Role
    Officer
    +15
  • Trade size
    $76k at market
    +8
  • Share of holdings sold
    Sold 3.1% of holdings
    0
  • Cluster
    3 insiders selling within 14 days
    +15
  • 10b5-1 plan
    Pre-scheduled under a 10b5-1 plan
    -20

What happened after comparable sells

Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.

This signal so far: 1m +8.1%, 3m +28.5%, 6m +44.2%.

Price around the trade, and since

From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.

NPKIOct 9, 2026 · close 11.34
Since filing Aug 12, 2025: +14.9%SPY +22.8% · excess -7.9%

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™

Rows in this filing

Every transaction in Form 4 0000071829-25-000121, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Aug 11, 2025SOpen-market sale
Common Stock10b5-1
-8,005$9.51$76k252,621Aug 12, 2025

Related signals

Other insiders at NPK International Inc. and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
9Weak
NPKIsell 210b5-1
NPK International Inc.
Matthew James Warren
Chief Accounting Officer
$40k
2,991 shares
-5%
21Weak
NPKIsell 310b5-1
NPK International Inc.
Rose M Robeson
director
$135k
10,000 shares
-4%
8Weak
NPKIsell 210b5-1
NPK International Inc.
Michael A Lewis
director
$29k
2,013 shares
-1%
13Weak
NPKIsell 210b5-1
NPK International Inc.
Lori Briggs
VP & President, Ind. Solutions
$123k
8,325 shares
-3%
48Moderate
NPKIsell 210b5-1
NPK International Inc.
Matthew Lanigan
President & CEO
$2.4M
167,375 shares
-40%
0Weak
NPKIsell 210b5-1
NPK International Inc.
Lori Briggs
VP & President, Ind. Solutions
$152k
10,446 shares
-4%
0Weak
NPKIsell10b5-1
NPK International Inc.
Michael A Lewis
director
$31k
2,013 shares
-2%
15Weak
NPKIsell10b5-1
NPK International Inc.
Gregg Piontek
Senior Vice President and CFO
$226k
15,000 shares
-2%
20Weak
NPKIsell10b5-1
NPK International Inc.
Gregg Piontek
Senior Vice President and CFO
$508k
35,000 shares
-4%
23Weak
NPKIsell 210b5-1
NPK International Inc.
Gregg Piontek
Senior Vice President and CFO
$225k
15,000 shares
-2%

Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.

Lori Briggs sold $76k of NPKI | InsiderTell