| $238M | ||
| $100M | ||
| $85M | ||
| $68M | ||
| $34M | ||
| $27M |
Buys | $233,154 | 10 | 91 |
Sells | $3,588,097 | 1 | 9 |
| Parrillo Richard | director | 2 | $73,071 | 0 | $0 | $73,071 |
| Sheriff Alan | director | 1 | $25,350 | 0 | $0 | $25,350 |
| Feeler Jeffrey R | director | 1 | $25,092 | 0 | $0 | $25,092 |
| Mansy Loan Nguyen | director | 1 | $24,814 | 0 | $0 | $24,814 |
| Gaglione Kenneth | President and CEO | 1 | $24,475 | 0 | $0 | $24,475 |
| Prouty Eric A | director | 1 | $24,200 | 0 | $0 | $24,200 |
| ABBATECOLA VINCENT P | director | 1 | $23,748 | 0 | $0 | $23,748 |
| Bertaux Brian J. | Chief Financial Officer | 1 | $9,740 | 0 | $0 | $9,740 |
| Bulgarino Nicole E | director | 1 | $2,665 | 0 | $0 | $2,665 |
| COLEMAN BRIAN F | Former Director | 0 | $0 | 1 | $3.59M | $-3.59M |
Hudson Technologies, Inc. (HDSN) operates as a dedicated provider of specialized refrigerant services, addressing persistent issues within the refrigeration industry, primarily throughout the United States. The company's core business involves the sale of refrigerants and various industrial gases. It also delivers a comprehensive range of refrigerant management solutions, including the recovery and reprocessing of used refrigerants, the refurbishment of reusable cylinders, and hydrostatic testing. Furthermore, Hudson offers "RefrigerantSide" services, which focus on deep system decontamination to eliminate moisture, oils, and other harmful contaminants from refrigeration systems. Beyond these offerings, Hudson provides its SmartEnergy OPS service, a proprietary web-based platform designed for continuous, real-time monitoring of refrigeration and other energy systems. Additional specialized services encompass Chiller Chemistry and Chill Smart programs. The firm also contributes to environmental efforts by participating in the development of carbon offset projects. Hudson serves a diverse clientele, including commercial, industrial, and governmental organizations, as well as refrigerant wholesalers, distributors, contractors, and original equipment manufacturers in the refrigeration sector. Established in 1991, Hudson Technologies, Inc. maintains its corporate headquarters in Woodcliff Lake, New Jersey.
Over the last 12 months, insiders at Hudson Technologies, Inc. have bought $233,154 and sold $3.59M worth of Hudson Technologies, Inc. stock.
On average, over the past 5 years, insiders at Hudson Technologies, Inc. have bought $82,155 and sold $2.08M worth of stock each year.
Highest buying activity among insiders over the last 12 months: Parrillo Richard (director) — $73,071. Sheriff Alan (director) — $25,350. Feeler Jeffrey R (director) — $25,092.
The last purchase of 2,000 shares for transaction amount of $9,740 was made by Bertaux Brian J. (Chief Financial Officer) on 2026‑05‑19.
| 2026-05-19 | Bertaux Brian J. | Chief Financial Officer | 2,000 0.0047% | $4.87 | $9,740 | +8.90% | ||
| 2026-05-14 | Parrillo Richard | director | 5,000 0.0122% | $4.96 | $24,814 | +9.15% | ||
| 2026-05-14 | Mansy Loan Nguyen | director | 5,000 0.0122% | $4.96 | $24,814 | +9.15% | ||
| 2026-05-14 | Bulgarino Nicole E | director | 550 0.0013% | $4.84 | $2,665 | +9.15% | ||
| 2026-05-14 | Feeler Jeffrey R | director | 5,100 0.0123% | $4.92 | $25,092 | +9.15% | ||
| 2026-05-13 | Parrillo Richard | director | 10,000 0.0233% | $4.83 | $48,257 | +6.63% | ||
| 2026-05-13 | Prouty Eric A | director | 5,000 0.0117% | $4.84 | $24,200 | +6.63% | ||
| 2026-05-13 | Sheriff Alan | director | 5,200 0.0122% | $4.88 | $25,350 | +6.63% | ||
| 2026-05-13 | Gaglione Kenneth | President and CEO | 5,000 0.0118% | $4.89 | $24,475 | +6.63% | ||
| 2025-12-05 | Sale | COLEMAN BRIAN F | Former Director | 484,616 1.1258% | $7.40 | $3.59M | -13.27% | |
| 2025-11-17 | ABBATECOLA VINCENT P | director | 3,500 0.0082% | $6.79 | $23,748 | 0.00% | ||
| 2024-11-07 | ABBATECOLA VINCENT P | director | 2,500 0.0057% | $5.98 | $14,948 | +20.50% | ||
| 2024-06-14 | Sale | ABBATECOLA VINCENT P | director | 10,000 0.0216% | $9.20 | $92,000 | -26.43% | |
| 2023-12-14 | Sale | Parrillo Richard | director | 20,205 0.0452% | $13.29 | $268,491 | -31.05% | |
| 2023-12-13 | Sale | Parrillo Richard | director | 22,399 0.0495% | $12.93 | $289,631 | -30.10% | |
| 2023-12-12 | Sale | Parrillo Richard | director | 30,000 0.0659% | $12.85 | $385,500 | -29.36% | |
| 2023-06-14 | Sale | Prouty Eric A | director | 20,000 0.0442% | $9.56 | $191,200 | +25.65% | |
| 2023-03-14 | ABBATECOLA VINCENT P | director | 1,000 0.0023% | $8.27 | $8,270 | +50.00% | ||
| 2022-12-12 | Sale | Gaglione Kenneth | VP-Operations | 19,000 0.0408% | $11.53 | $219,070 | -15.97% | |
| 2022-11-09 | Sale | Krishnamurti Nat | CFO | 46,194 0.1026% | $10.13 | $467,945 | -0.99% |
| COLEMAN BRIAN F | Former Director | 426968 1.0149% | $2.39M | 5 | 13 | <0.0001% |
| ABBATECOLA VINCENT P | director | 169748 0.4035% | $948,891.32 | 12 | 13 | +8.74% |
| Prouty Eric A | director | 153852 0.3657% | $860,032.68 | 5 | 2 | <0.0001% |
| Parrillo Richard | director | 25595 0.0608% | $143,076.05 | 6 | 7 | <0.0001% |
| Mansy Loan Nguyen | director | 25595 0.0608% | $143,076.05 | 1 | 0 | |
| Bulgarino Nicole E | director | 11048 0.0263% | $61,758.32 | 1 | 0 | |
| Sheriff Alan | director | 9265 0.022% | $51,791.35 | 1 | 0 | |
| Feeler Jeffrey R | director | 9165 0.0218% | $51,232.35 | 1 | 0 | |
| Gaglione Kenneth | President and CEO | 5000 0.0119% | $27,950.00 | 1 | 1 | |
| Bertaux Brian J. | Chief Financial Officer | 2000 0.0048% | $11,180.00 | 1 | 0 | |
| ZUGIBE KEVIN J | Chairman, CEO | 3604923 8.5691% | $20.15M | 4 | 28 | <0.0001% |
| FLEMING US DISCOVERY FUND III LP | 3113802 7.4017% | $17.41M | 2 | 2 | ||
| MANDRACCHIA STEPHEN P | 463541 1.1019% | $2.59M | 5 | 36 | <0.0001% | |
| BUSCEMI JAMES R | Vice President Chief Financial | 360525 0.857% | $2.02M | 1 | 14 | +5.36% |
| HARKINS CHARLES F | Vice President Sales | 160000 0.3803% | $894,400.00 | 1 | 16 | |
| MONETTA DOMINIC J | director | 80316 0.1909% | $448,966.44 | 3 | 10 | +50.3% |
| SCHELL HARRY C | director | 80000 0.1902% | $447,200.00 | 4 | 1 | |
| Houghton Kathleen | VP-Sales and Marketing | 41163 0.0978% | $230,101.17 | 0 | 2 | |
| MORCH OTTO C | director | 37085 0.0882% | $207,305.15 | 2 | 16 | |
| Krishnamurti Nat | CFO | 25207 0.0599% | $140,907.13 | 0 | 4 |
| Increased Positions | 70 | +31.53% | 3M | +8.69% |
| Decreased Positions | 95 | -42.79% | 4M | -10.9% |
| New Positions | 27 | New | 1M | New |
| Sold Out Positions | 27 | Sold Out | 734,970 | Sold Out |
| Total Postitions | 197 | -11.26% | 33M | -2.21% |
| Hartree Partners, Lp | $25,840.00 | 8.84% | 3.8M | -200,000 | -5% | 2025-09-30 |
| Blackrock, Inc. | $19,470.00 | 6.66% | 2.86M | -42,560 | -1.47% | 2025-09-30 |
| Vanguard Group Inc | $16,138.00 | 5.52% | 2.37M | -107,128 | -4.32% | 2025-09-30 |
| Dimensional Fund Advisors Lp | $13,664.00 | 4.67% | 2.01M | +2,515 | +0.13% | 2025-09-30 |
| Westerly Capital Management, Llc | $12,852.00 | 4.39% | 1.89M | -110,000 | -5.5% | 2025-09-30 |
| Renaissance Technologies Llc | $12,219.00 | 4.18% | 1.8M | +125,000 | +7.48% | 2025-09-30 |
| New South Capital Management Inc | $9,073.00 | 3.1% | 1.33M | -16,606 | -1.23% | 2025-09-30 |
| American Century Companies Inc | $8,662.00 | 2.96% | 1.27M | +201,136 | +18.75% | 2025-09-30 |
| Arrowstreet Capital, Limited Partnership | $7,560.00 | 2.59% | 1.11M | 0 | 0% | 2025-09-30 |
| Geode Capital Management, Llc | $6,490.00 | 2.22% | 954,426 | +10,002 | +1.06% | 2025-09-30 |