12 insiders reported 38 Form 4 transactions for HUDSON TECHNOLOGIES INC /NY (HDSN) over the past 18 months (most recent 2026-07-02). Recent activity: Hartree Partners, LP (Insider) Buy 288,111 shares, Hartree Partners, LP (Insider) Buy 204,789 shares, Hartree Partners, LP (Insider) Buy 271,302 shares, Feeler Jeffrey R (Director) Buy 3,219 shares, Prouty Eric A (Director) Buy 4,440 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-07-02 | Hartree Partners, LP | Insider | Buy | 288,111 | $1.7M |
| 2026-07-02 | Hartree Partners, LP | Insider | Buy | 204,789 | $1.2M |
| 2026-07-02 | Hartree Partners, LP | Insider | Buy | 271,302 | $1.6M |
| 2026-06-22 | Feeler Jeffrey R | Director | Buy | 3,219 | $0 |
| 2026-06-22 | Prouty Eric A | Director | Buy | 4,440 | $0 |
| 2026-06-22 | Sheriff Alan | Director | Buy | 3,219 | $0 |
| 2026-06-22 | Mansy Loan Nguyen | Director | Buy | 8,881 | $0 |
| 2026-05-21 | Parrillo Richard | Director | Buy | 10,000 | $48,257 |
| 2026-05-21 | Bertaux Brian J. | Chief Financial Officer | Buy | 2,000 | $9,740 |
| 2026-05-15 | Sheriff Alan | Director | Buy | 5,200 | $25,350 |
| 2026-05-15 | Prouty Eric A | Director | Buy | 5,000 | $24,200 |
| 2026-05-15 | Parrillo Richard | Director | Buy | 3,600 | $17,856 |
| 2026-05-15 | Feeler Jeffrey R | Director | Buy | 5,100 | $25,092 |
| 2026-05-15 | Gaglione Kenneth | President and CEO | Buy | 5,000 | $24,475 |
| 2026-05-15 | Mansy Loan Nguyen | Director | Buy | 3,600 | $17,856 |
| 2026-05-15 | Parrillo Richard | Director | Buy | 1,400 | $6,958 |
| 2026-05-15 | Mansy Loan Nguyen | Director | Buy | 1,400 | $6,958 |
| 2026-05-15 | Bulgarino Nicole E | Director | Buy | 550 | $2,665 |
| 2026-04-14 | Feeler Jeffrey R | Director | Buy | 4,065 | $0 |
| 2026-04-14 | Sheriff Alan | Director | Buy | 4,065 | $0 |
| 2026-01-12 | Houghton Kathleen | Sr. VP-Sales and Marketing | Buy | 50,888 | $193,883 |
| 2026-01-12 | Houghton Kathleen | Sr. VP-Sales and Marketing | Buy | 120,000 | $90,000 |
| 2026-01-12 | Houghton Kathleen | Sr. VP-Sales and Marketing | Sell | 44,873 | $318,598 |
| 2026-01-12 | Houghton Kathleen | Sr. VP-Sales and Marketing | Buy | 47,619 | $76,190 |
| 2026-01-12 | Houghton Kathleen | Sr. VP-Sales and Marketing | Sell | 21,797 | $154,759 |
Source: SEC Form 4 filings · as of 2026-07-02