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buyModerate cluster of 8

Nicole E Bulgarino bought $2,665 of HDSN

director at HUDSON TECHNOLOGIES INC /NY. 550 shares at an average of $4.85, traded May 14, 2026, filed May 15, 2026.

Conviction score
51
Value
$2,665
550 shares
Holdings after
11,048
+5% from before
From 52-week low
0%
low $4.84, close $4.84
From 52-week high
-54%
high $10.44, as of May 14, 2026

Score components

  • Role
    Director
    +15
  • Trade size
    $3k at market
    0
  • Relative to holdings
    Holdings up 5%
    +3
  • Price context
    0% above the 52-week low; 54% below the 52-week high
    +18
  • Cluster
    8 insiders buying within 14 days
    +15
  • 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 +17.5%, 3m +15.2%, 6m -.

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.

HDSNOct 9, 2026 · close 5.14
Since filing May 15, 2026: +4.5%SPY +5.8% · excess -1.3%

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 0000925528-26-000040, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
May 14, 2026POpen-market purchase
Common Stock
+550$4.85$2,66511,048May 15, 2026

Related signals

Other insiders at HUDSON TECHNOLOGIES INC /NY and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
49Moderate
HDSNbuy
HUDSON TECHNOLOGIES INC /NY
Hartree Partners, LP
owner
$604k
118,549 shares
+2%
33Weak
HDSNbuy
HUDSON TECHNOLOGIES INC /NY
Hartree Partners, LP
owner
$69k
13,515 shares
+0%
32Weak
HDSNbuy
HUDSON TECHNOLOGIES INC /NY
Hartree Partners, LP
owner
$57k
11,136 shares
+0%
30Weak
HDSNbuy
HUDSON TECHNOLOGIES INC /NY
Hartree Partners, LP
owner
$27k
5,317 shares
+0%
39Weak
HDSNbuy
HUDSON TECHNOLOGIES INC /NY
Hartree Partners, LP
owner
$553k
100,612 shares
+2%
20Weak
HDSNbuy
HUDSON TECHNOLOGIES INC /NY
Hartree Partners, LP
owner
$29k
5,198 shares
+0%
34Weak
HDSNbuy
HUDSON TECHNOLOGIES INC /NY
Hartree Partners, LP
owner
$312k
52,104 shares
+1%
36Weak
HDSNbuy
HUDSON TECHNOLOGIES INC /NY
Hartree Partners, LP
owner
$393k
65,550 shares
+1%
20Weak
HDSNbuy
HUDSON TECHNOLOGIES INC /NY
Hartree Partners, LP
owner
$31k
5,234 shares
+0%
43Moderate
HDSNbuy
HUDSON TECHNOLOGIES INC /NY
Hartree Partners, LP
owner
$4.5M
764,202 shares
+18%

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.

Nicole E Bulgarino bought $2,665 of HDSN | InsiderTell