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buyWeak cluster of 2

Nancy E. Calderon bought $7,452 of NTIC

director at NORTHERN TECHNOLOGIES INTERNATIONAL CORP. 1,000 shares at an average of $7.45, traded Apr 25, 2025, filed Apr 28, 2025.

Conviction score
26
Value
$7,452
1,000 shares
Holdings after
7,954
+14% from before
From 52-week low
-
no price yet
From 52-week high
-
no price yet

Score components

  • Role
    Director
    +15
  • Trade size
    $7k at market
    0
  • Relative to holdings
    Holdings up 14%
    +3
  • Price context
    No price history yet
    0
  • Cluster
    2 insiders buying within 14 days
    +8
  • Repeat buying
    First buy in 90 days
    0
  • Track record
    Too few past buys to judge (0 with prices)
    0

What happened after comparable buys

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 -2.2%, 3m +6.8%, 6m +4.1%.

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.

NTICOct 12, 2026 · close 7.70
Since filing Apr 28, 2025: +5.0%SPY +43.6% · excess -38.6%

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 0001791477-25-000003, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Apr 25, 2025POpen-market purchase
Common Stock
+1,000$7.45$7,4527,954Apr 28, 2025

Related signals

Other insiders at NORTHERN TECHNOLOGIES INTERNATIONAL CORP and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
34Weak
NTICsell 2
NORTHERN TECHNOLOGIES INTERNATIONAL CORP
G Patrick Lynch
President and CEO
$129k
16,072 shares
-13%
23Weak
NTICsell 2
NORTHERN TECHNOLOGIES INTERNATIONAL CORP
Richard Nigon
director
$96k
12,000 shares
-20%
26Weak
NTICbuy 2
NORTHERN TECHNOLOGIES INTERNATIONAL CORP
Konstantin von Falkenhausen
director
$7,953
1,100 shares
+6%

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.

Nancy E. Calderon bought $7,452 of NTIC | InsiderTell