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Insider · CIK 0002032778

Brian J. Bertaux

cfoofficer

Files at HDSN (HUDSON TECHNOLOGIES INC /NY). First filing May 21, 2026, latest May 21, 2026.

In brief

Brian J. Bertaux files SEC Form 4 as CFO at HDSN (HUDSON TECHNOLOGIES INC /NY). Since May 21, 2026, Brian J. Bertaux has reported 1 open-market buy worth $9,740 and 0 open-market sells worth $0, the latest filed on May 21, 2026.

A track record needs three past buys with six months of prices behind them; Brian J. Bertaux has 0, so none is measured yet.

The newest scored trade: bought $9,740 of HDSN on May 19, 2026, filed May 21, 2026, scored 63 (notable). In the last 12 months: 1 buy worth $9,740 and 0 sells worth $0.

Track record
Not enough history
Fewer than three past buys with six months of prices.
Median 6-month excess
-
after past buys, n = 0
Hit rate
-
past buys that beat the index over 6 months
Open-market trades
1 / 0
$9,740 bought, $0 sold

Where the trades landed

Last year at the company this insider has traded most, with each buy and sell on the bar it happened.

HDSN: HUDSON TECHNOLOGIES INC /NY

HDSNOct 9, 2026 · close 5.14

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™

Signals

This insider’s open-market buys and sells, scored.

ScoreCompanyValueHoldingsPrice contextFiled
63Notable
HDSNbuy 8
HUDSON TECHNOLOGIES INC /NY
$9,740
2,000 shares
-+1% from low-53% from high

Transactions

Every row this insider has filed, 2 in all, newest first.

DateCompanyTransactionSharesPriceValueHoldings afterFiled
May 19, 2026HDSN
HUDSON TECHNOLOGIES INC /NY
POpen-market purchase
Common Stock
+2,000$4.87$9,7402,000May 21, 2026
Mar 13, 2025HDSN
HUDSON TECHNOLOGIES INC /NY
AGrant or award
Stock Optionderivative
+55,109$0.00$055,109Mar 17, 2025

Questions about Brian J. Bertaux

Answered from the filings on this page, as of the latest one.

Is Brian J. Bertaux buying or selling?

In the last 12 months Brian J. Bertaux reported 1 open-market buy worth $9,740 and 0 open-market sells worth $0 on SEC Form 4; the latest was bought $9,740 of HDSN on May 19, 2026. Grants, option exercises and tax withholding are not counted.

How did Brian J. Bertaux's past buys perform?

Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Brian J. Bertaux has 0.

Where does Brian J. Bertaux file Form 4?

Brian J. Bertaux has filed Form 4 at HDSN (HUDSON TECHNOLOGIES INC /NY) as Chief Financial Officer. A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.

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.

Brian J. Bertaux: insider trades and track record | InsiderTell