| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
10% Owner
1 company
Hartree Partners, LP is 10% Owner at HDSN.
Historically, Hartree Partners, LP's trades have earned a below-average insider score of 37/100 across 8 rated trades. On a 3-month view, none of the rated trades came out ahead, averaging -13.2% over three months.
Net of sales, the HDSN filings show accumulation of 1,441,417 shares.
Hartree Partners, LP has 11 Form 4 filings on record from June 2026 to October 2026, all as 10% Owner at Hudson Technologies (HDSN), 2026.
The 19 reported transactions were 19 open-market purchases.
Counted by filing, the open-market trades come to 11 purchases worth about $7.9M and no sales.
The largest open-market purchase was 764,202 shares of HDSN at an average $5.86 on July 2, 2026, about $4.5M.
| Date | Ticker | Role | Type | Shares | Price | Value | Chg% | 3M | 12M | SEC |
|---|---|---|---|---|---|---|---|---|---|---|
| Nov 2, 2026 | HDSN Hudson Technologies, Inc. | 10% Owner | Buy | 300,000 | $4.38 | $1,313,588.26 | +5.6% | - | - | |
| Sep 24, 2026 | HDSN Hudson Technologies, Inc. | 10% Owner | Buy | 118,549 | $5.10 | $604,445.79 | +2.3% | - | - | |
| Sep 23, 2026 | HDSN Hudson Technologies, Inc. | 10% Owner | Buy | 13,515 | $5.10 | $68,923.50 | +0.3% | - | - | |
| Sep 16, 2026 | HDSN Hudson Technologies, Inc. | 10% Owner | Buy | 11,136 | $5.10 | $56,793.60 | +0.2% | - | - | |
| Sep 2, 2026 | HDSN Hudson Technologies, Inc. | 10% Owner | Buy | 5,317 | $5.10 | $27,116.70 | +0.1% | - | - | |
| Aug 25, 2026 | HDSN Hudson Technologies, Inc. | 10% Owner | Buy | 100,612 | $5.50 | $553,046.92 | +2.0% | - | - | |
| Aug 12, 2026 | HDSN Hudson Technologies, Inc. | 10% Owner | Buy | 5,198 | $5.50 | $28,589.00 | +0.1% | - | - | |
| Jul 29, 2026 | HDSN Hudson Technologies, Inc. | 10% Owner | Buy | 52,104 | $5.99 | $312,102.96 | +1.0% | -9.9% | - | |
| Jul 21, 2026 | HDSN Hudson Technologies, Inc. | 10% Owner | Buy | 65,550 | $5.99 | $392,601.60 | +1.3% | -14.3% | - | |
| Jul 7, 2026 | HDSN Hudson Technologies, Inc. | 10% Owner | Buy | 5,234 | $5.99 | $31,351.66 | +0.1% | -17.5% | - |