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sellModerate cluster of 6

John Richard Stamm sold $214k of VERX

director at Vertex, Inc.. 3,815 shares at an average of $56.11, traded Dec 6, 2024, filed Dec 10, 2024.

Warning score
47
Value
$214k
3,815 shares
Holdings after
11,720
-25% from before
From 52-week low
-
no price yet
From 52-week high
-
no price yet

Score components

  • Role
    Director
    +15
  • Trade size
    $214k at market
    +12
  • Share of holdings sold
    Sold 25% of holdings
    +5
  • Cluster
    6 insiders selling within 14 days
    +15

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 -3.1%, 3m -41.1%, 6m -30.3%.

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.

VERXOct 9, 2026 · close 12.95
Since filing Dec 10, 2024: -76.3%SPY +32.1% · excess -108.4%

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 0001415889-24-028828, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Dec 6, 2024SOpen-market sale
Class A Common Stock
-3,815$56.11$214k11,720Dec 10, 2024

Related signals

Other insiders at Vertex, Inc. and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
57Moderate
VERXbuy
Vertex, Inc.
Eric C. Andersen
director
$516k
40,000 shares
+36%
48Moderate
VERXsell 2
Vertex, Inc.
ITEM SECOND IRR. TRUST FBO ANNE MARIE WESTPHAL u/a of JEFFREY R. WESTPHAL dated October 5, 2001
owner, other
$836k
23,767 shares
-12%
65Notable
VERXsell 2
Vertex, Inc.
ITEM SECOND IRR. TRUST FBO ANNE MARIE WESTPHAL u/a of JEFFREY R. WESTPHAL dated October 5, 2001
owner, other
$14M
381,233 shares
-66%
61Notable
VERXsell 2
Vertex, Inc.
Jeffrey Westphal
other
$115M
3,000,000 shares
-198%
53Moderate
VERXsell 2
Vertex, Inc.
David DeStefano
PRESIDENT & CEO
$18M
472,531 shares
-35%
55Moderate
VERXsell 2
Vertex, Inc.
Ryan J Leib
Chief Accounting Officer
$219k
5,755 shares
-100%
35Weak
VERXbuy
Vertex, Inc.
Bradley M Gayton
director
$299k
9,400 shares
+25%
37Weak
VERXsell
Vertex, Inc.
ITEM SECOND IRR. TRUST FBO KYLE R. WESTPHAL u/a of JEFFREY R. WESTPHAL dated October 5, 2001
owner
$4.1M
72,000 shares
-6%
57Moderate
VERXsell 5
Vertex, Inc.
John R Schwab
CHIEF FINANCIAL OFFICER
$1.1M
20,000 shares
-27%
68Notable
VERXsell 5
Vertex, Inc.
Jeffrey Westphal
other
$30M
575,000 shares
-100%

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.

John Richard Stamm sold $214k of VERX | InsiderTell