HUDSON TECHNOLOGIES INC /NY (HDSN)
$5.43-$0.05 (-0.91%) Today
Hudson Technologies Inc is a refrigerant services company providing solutions to recurring challenges within the refrigeration industry. The company delivers environmentally sustainable offerings, covering the sale of refrigerant gases, recovery, reclamation, and reuse, as well as improving equipment performance through energy efficiency services, emergency air conditioning and refrigeration system repairs, refrigerant disposal, and carbon credit trading. It operates through one reportable segment. Its products and services are used in commercial air conditioning, industrial processing, and refrigeration systems, and include refrigerant and industrial gas sales, refrigerant management services (mainly reclamation of refrigerants), and RefrigerantSide services performed at customer sites.
| Form 4 transaction type | Transactions | Shares | Total value |
|---|---|---|---|
| Open-market purchase | 11 | 992,900 | $5.79M |
| Grant or award | 10 | 156,411 |
Dollar totals are shown for open-market purchases and sales only. Grants, option exercises, gifts and tax withholding are reported by share count because they are not trades at a market price.
30 Form 4 filings on record, the earliest from Nov 12, 2024, newest first.
| Date | Insider | Transaction | Security | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Hartree Partners, LP - 10% Owner | Open-market purchase | Common Stock, par value $0.01 | 9,446 | $5.50 | $52K | |
| Hartree Partners, LP - 10% Owner | Open-market purchase | Common Stock, par value $0.01 | 91,166 | $5.50 | $501K | |
| Hartree Partners, LP - 10% Owner | Open-market purchase | Common Stock, par value $0.01 | 5,198 | $5.50 | $29K | |
| Hartree Partners, LP - 10% Owner | Open-market purchase | Common Stock, par value $0.01 | 52,104 | $5.99 | $312K | |
| Hartree Partners, LP - 10% Owner | Open-market purchase | Common Stock, par value $0.01 | 17,842 | $5.99 | $107K | |
| Hartree Partners, LP - 10% Owner | Open-market purchase | Common Stock, par value $0.01 | 47,708 | $5.99 | $286K | |
| Hartree Partners, LP - 10% Owner | Open-market purchase | Common Stock, par value $0.01 | 4,634 | $5.99 | $28K | |
| Hartree Partners, LP - 10% Owner | Open-market purchase | Common Stock, par value $0.01 | 600 | $5.99 | $4K | |
| Hartree Partners, LP - 10% Owner | Open-market purchase | Common Stock, par value $0.01 | 204,789 | $5.68 | $1.16M | |
| Hartree Partners, LP - 10% Owner | Open-market purchase | Common Stock, par value $0.01 | 288,111 | $5.88 | $1.70M | |
| Hartree Partners, LP - 10% Owner | Open-market purchase | Common Stock, par value $0.01 | 271,302 | $5.97 | $1.62M | |
| Alan Sheriff - Director | Grant or award | Common Stock | 3,219 | $0.00 | - | |
| Alan Sheriff - Director | Grant or award | Stock Options | 15,360 | $0.00 | - | |
| Eric A. Prouty - Director | Grant or award | Common Stock | 4,440 | $0.00 | - | |
| Eric A. Prouty - Director | Grant or award | Stock Options | 21,186 | $0.00 | - | |
 Richard Parrillo - Director | Grant or award | Stock Options | 31,780 | $0.00 | - | |
| Loan Nguyen Mansy - Director | Grant or award | Common Stock | 8,881 | $0.00 | - | |
| Loan Nguyen Mansy - Director | Grant or award | Stock Options | 21,186 | $0.00 | - | |
| Nicole E. Bulgarino - Director | Grant or award | Stock Options | 31,780 | $0.00 | - | |
| Jeffrey R. Feeler - Director | Grant or award | Common Stock | 3,219 | $0.00 | - | |
| Jeffrey R. Feeler - Director | Grant or award | Stock Options | 15,360 | $0.00 | - | |
| Richard Parrillo - Director | Open-market purchase | Common Stock | 10,000 | $4.83 | $48K | |
 Brian J. Bertaux - Officer | Open-market purchase | Common Stock | 2,000 | $4.87 | $10K | |
| Loan Nguyen Mansy - Director | Open-market purchase | Common Stock | 3,600 | $4.96 | $18K | |
| Loan Nguyen Mansy - Director | Open-market purchase | Common Stock | 1,400 | $4.97 | $7K | |
| Richard Parrillo - Director | Open-market purchase | Common Stock | 3,600 | $4.96 | $18K | |
| Richard Parrillo - Director | Open-market purchase | Common Stock | 1,400 | $4.97 | $7K | |
| Nicole E. Bulgarino - Director | Open-market purchase | Common Stock | 550 | $4.85 | $3K | |
| Eric A. Prouty - Director | Open-market purchase | Common Stock | 5,000 | $4.84 | $24K | |
| Alan Sheriff - Director | Open-market purchase | Common Stock | 5,200 | $4.88 | $25K | |
| Jeffrey R. Feeler - Director | Open-market purchase | Common Stock | 5,100 | $4.92 | $25K | |
| Kenneth Gaglione - Officer | Open-market purchase | Common Stock | 5,000 | $4.90 | $24K | |
| Alan Sheriff - Director | Grant or award | Common Stock | 4,065 | $0.00 | - | |
| Jeffrey R. Feeler - Director | Grant or award | Common Stock | 4,065 | $0.00 | - | |
| Kathleen Houghton - Officer | Option exercise | Common Stock | 120,000 | $0.75 | $90K | |
| Kathleen Houghton - Officer | Tax withholding / forfeiture | Common Stock | 44,873 | $7.10 | $319K | |
| Kathleen Houghton - Officer | Option exercise | Common Stock | 47,619 | $1.60 | $76K | |
| Kathleen Houghton - Officer | Tax withholding / forfeiture | Common Stock | 21,797 | $7.10 | $155K | |
| Kathleen Houghton - Officer | Option exercise | Common Stock | 50,888 | $3.81 | $194K | |
| Kathleen Houghton - Officer | Tax withholding / forfeiture | Common Stock | 34,382 | $7.10 | $244K | |
| Kathleen Houghton - Officer | Option exercise | Stock Option | 120,000 | $0.00 | - | |
| Kathleen Houghton - Officer | Option exercise | Stock Option | 47,619 | $0.00 | - | |
| Kathleen Houghton - Officer | Option exercise | Stock Option | 50,888 | $0.00 | - | |
| Kenneth Gaglione - Officer | Grant or award | Stock Option | 216,309 | $0.00 | - | |
 Vincent P. Abbatecola - Director | Open-market purchase | Common Stock | 3,500 | $6.79 | $24K | |
| Vincent P. Abbatecola - Director | Option exercise | Common Stock | 4,744 | $7.35 | $35K | |
| Vincent P. Abbatecola - Director | Tax withholding / forfeiture | Common Stock | 3,519 | $9.91 | $35K | |
| Vincent P. Abbatecola - Director | Option exercise | Stock Options | 4,744 | $0.00 | - | |
| Eric A. Prouty - Director | Option exercise | Common Stock | 4,744 | $7.35 | $35K | |
| Eric A. Prouty - Director | Tax withholding / forfeiture | Common Stock | 3,713 | $9.39 | $35K | |
| Eric A. Prouty - Director | Option exercise | Stock Options | 4,744 | $0.00 | - | |
| Vincent P. Abbatecola - Director | Grant or award | Common Stock | 3,182 | $0.00 | - | |
| Vincent P. Abbatecola - Director | Grant or award | Stock Options | 13,698 | $0.00 | - | |
| Vincent P. Abbatecola - Director | Open-market purchase | Common Stock | 2,500 | $5.98 | $15K |
HUDSON TECHNOLOGIES INC /NY (HDSN) had 12 insider filings in the last 90 days, with the most recent on 2026-08-26. The full record for HDSN runs to 30 Form 4 filings, the earliest from 2024-11-12. InsiderAlpha tracks every Form 4, Form 144, and 8-K filing in real time.
11 insider purchases of HDSN were filed in the last 90 days, totaling $5.79M.
No insider sales of HDSN were filed in the last 90 days.
This page tracks HDSN Form 4 insider transactions, Form 144 sale notices, and 8-K material event disclosures in one timeline. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
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Every Form 4 below links to the original document on SEC EDGAR, so the numbers on this page can be checked against the filing they came from.
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