HDSN
insider transactionsHUDSON TECHNOLOGIES INC /NY — buys & sells by directors, officers and 10% owners A shareholder owning more than 10% of the company. Must report trades, but usually a weaker signal than an officer or director. (SEC Form 4).
Cluster buy signal: Multiple insiders at the same company buying around the same time — often a stronger signal than a single buy. 7 different insiders made open-market purchases in the last 90 days, totalling $184.3K.
Net shares · 90d
+37.8K
37.8K buy · 0 sell
Net value · 90d
$184.3K
$184.3K in · $0 out
Sentiment · 90d
Net buying
100% buying · 0% selling
Open-market trades · 90d
10
37.8K buy · 0 sell
Net buy / sell volume
Not enough data to chart yet.
Tap or hover the chart for daily net volume. Green = net buying, red = net selling.
All transactions
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Buy·P
Brian J. Bertaux KEY
Chief Financial Officer
$9.7K
2.0K sh · $4.87
Own New
-
Buy·P
Director
$7.0K
1.4K sh · $4.97
Own +6%
-
Buy·P
Director
$17.9K
3.6K sh · $4.96
Own +17%
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Buy·P
Director
$7.0K
1.4K sh · $4.97
Own +6%
-
Buy·P
Director
$17.9K
3.6K sh · $4.96
Own +17%
-
Buy·P
Director
$2.7K
550 sh · $4.85
Own +5%
-
Buy·P
Director
$24.2K
5.0K sh · $4.84
Own +3%
-
Buy·P
Director
$25.4K
5.2K sh · $4.88
Own +128%
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Buy·P
Kenneth Gaglione KEY
President and CEO
$24.5K
5.0K sh · $4.90
Own New
-
Buy·P
Director
$48.3K
10.0K sh · $4.83
Own +5%
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Grant·A
Director
$0
4.1K sh
Own New
| Date▾ | Insider | Type | Shares | Value |
|---|---|---|---|---|
| May 19, 2026 | Brian J. Bertaux KEY | Buy P | 2.0K | $9.7K |
| May 14, 2026 | Loan Nguyen Mansy | Buy P | 1.4K | $7.0K |
| May 14, 2026 | Loan Nguyen Mansy | Buy P | 3.6K | $17.9K |
| May 14, 2026 | Richard Parrillo | Buy P | 1.4K | $7.0K |
| May 14, 2026 | Richard Parrillo | Buy P | 3.6K | $17.9K |
| May 14, 2026 | Nicole E Bulgarino | Buy P | 550 | $2.7K |
| May 13, 2026 | Eric A Prouty | Buy P | 5.0K | $24.2K |
| May 13, 2026 | Alan Sheriff | Buy P | 5.2K | $25.4K |
| May 13, 2026 | Kenneth Gaglione KEY | Buy P | 5.0K | $24.5K |
| May 13, 2026 | Richard Parrillo | Buy P | 10.0K | $48.3K |
| Apr 10, 2026 | Alan Sheriff | Grant A | 4.1K | $0 |
About HDSN insider trading
This page tracks insider transactions for HUDSON TECHNOLOGIES INC /NY (HDSN) reported to the U.S. Securities and Exchange Commission on Form 4. Corporate insiders — directors, executive officers and beneficial owners of more than 10% of the stock — must disclose their trades within two business days. Open-market purchases (code P) and sales (code S) made at the insider's discretion are the most-watched opportunistic signals, while awards (A), option exercises (M) and tax-withholding (F) reflect compensation rather than conviction. Trades marked 10b5-1 were made under a pre-arranged plan and are considered routine. A cluster buy — several insiders buying within a short window — is historically a stronger bullish indicator than any single trade.