| $126M | ||
| $85M | ||
| $34M | ||
| $33M | ||
| $32M | ||
| $27M |
Buys | $8,098,921 | 29 | 97 |
Sells | $3,588,097 | 1 | 3 |
| Hartree Partners, LP | 10 percent owner | 19 | $7.87M | 0 | $0 | $7.87M |
| 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" …
Over the last 12 months, insiders at Hudson Technologies, Inc. have bought $8.1M and sold $3.59M worth of Hudson Technologies, Inc. stock.
On average, over the past 5 years, insiders at Hudson Technologies, Inc. have bought $2.71M and sold $2.55M worth of stock each year.
Highest buying activity among insiders over the last 12 months: Hartree Partners, LP (10 percent owner) — $7.87M. Parrillo Richard (director) — $73,071. Sheriff Alan (director) — $25,350.
The last purchase of 41,290 shares for transaction amount of $175,483 was made by Hartree Partners, LP (10 percent owner) on 2026‑11‑02.
| 2026-11-02 | Hartree Partners, LP | 10 percent owner | 41,290 0.0986% | $4.25 | $175,483 | +2.13% | ||
| 2026-10-30 | Hartree Partners, LP | 10 percent owner | 58,710 0.1375% | $4.25 | $249,506 | -0.81% | ||
| 2026-10-29 | Hartree Partners, LP | 10 percent owner | 200,000 0.4777% | $4.44 | $888,600 | -2.49% | ||
| 2026-09-24 | Hartree Partners, LP | 10 percent owner | 118,549 0.2747% | $5.10 | $604,446 | -1.43% | ||
| 2026-09-23 | Hartree Partners, LP | 10 percent owner | 11,013 0.026% | $5.10 | $56,166 | +0.39% | ||
| 2026-09-21 | Hartree Partners, LP | 10 percent owner | 2,502 0.0059% | $5.10 | $12,757 | -0.58% | ||
| 2026-09-16 | Hartree Partners, LP | 10 percent owner | 11,136 0.0259% | $5.10 | $56,794 | -0.96% | ||
| 2026-09-02 | Hartree Partners, LP | 10 percent owner | 5,317 0.0126% | $5.10 | $27,117 | +1.56% | ||
| 2026-08-25 | Hartree Partners, LP | 10 percent owner | 91,166 0.2178% | $5.50 | $501,094 | -4.75% | ||
| 2026-08-24 | Hartree Partners, LP | 10 percent owner | 9,446 0.0224% | $5.50 | $51,953 | -5.57% | ||
| 2026-08-12 | Hartree Partners, LP | 10 percent owner | 5,198 0.0121% | $5.50 | $28,589 | -6.61% | ||
| 2026-07-29 | Hartree Partners, LP | 10 percent owner | 52,104 0.127% | $5.99 | $312,103 | -9.67% | ||
| 2026-07-21 | Hartree Partners, LP | 10 percent owner | 47,708 0.1132% | $5.99 | $285,742 | -11.42% | ||
| 2026-07-20 | Hartree Partners, LP | 10 percent owner | 17,842 0.0416% | $5.99 | $106,859 | -12.93% | ||
| 2026-07-07 | Hartree Partners, LP | 10 percent owner | 600 0.0013% | $5.99 | $3,594 | -15.48% | ||
| 2026-07-06 | Hartree Partners, LP | 10 percent owner | 4,634 0.011% | $5.99 | $27,758 | -11.13% | ||
| 2026-07-02 | Hartree Partners, LP | 10 percent owner | 271,302 0.6788% | $5.97 | $1.62M | -10.60% | ||
| 2026-07-01 | Hartree Partners, LP | 10 percent owner | 288,111 0.7106% | $5.88 | $1.7M | -5.47% | ||
| 2026-06-30 | Hartree Partners, LP | 10 percent owner | 204,789 0.4816% | $5.68 | $1.16M | -6.53% | ||
| 2026-05-19 | Bertaux Brian J. | Chief Financial Officer | 2,000 0.0047% | $4.87 | $9,740 | +10.94% |
| Hartree Partners, LP | 10 percent owner | 5648517 13.4206% | $24.4M | 19 | 0 | |
| COLEMAN BRIAN F | Former Director | 426968 1.0145% | $1.84M | 5 | 13 | <0.0001% |
| ABBATECOLA VINCENT P | director | 169748 0.4033% | $733,311.36 | 12 | 13 | +8.74% |
| Prouty Eric A | director | 153852 0.3655% | $664,640.64 | 5 | 2 | <0.0001% |
| Parrillo Richard | director | 25595 0.0608% | $110,570.40 | 6 | 7 | <0.0001% |
| Mansy Loan Nguyen | director | 25595 0.0608% | $110,570.40 | 1 | 0 | |
| Bulgarino Nicole E | director | 11048 0.0262% | $47,727.36 | 1 | 0 | |
| Sheriff Alan | director | 9265 0.022% | $40,024.80 | 1 | 0 | |
| Feeler Jeffrey R | director | 9165 0.0218% | $39,592.80 | 1 | 0 | |
| Gaglione Kenneth | President and CEO | 5000 0.0119% | $21,600.00 | 1 | 1 | |
| Bertaux Brian J. | Chief Financial Officer | 2000 0.0048% | $8,640.00 | 1 | 0 | |
| ZUGIBE KEVIN J | Chairman, CEO | 3604923 8.5651% | $15.57M | 4 | 28 | <0.0001% |
| FLEMING US DISCOVERY FUND III LP | 3113802 7.3982% | $13.45M | 2 | 2 | ||
| MANDRACCHIA STEPHEN P | 463541 1.1013% | $2M | 5 | 36 | <0.0001% | |
| BUSCEMI JAMES R | Vice President Chief Financial | 360525 0.8566% | $1.56M | 1 | 14 | +5.36% |
| HARKINS CHARLES F | Vice President Sales | 160000 0.3802% | $691,200.00 | 1 | 16 | |
| MONETTA DOMINIC J | director | 80316 0.1908% | $346,965.12 | 3 | 10 | +50.3% |
| SCHELL HARRY C | director | 80000 0.1901% | $345,600.00 | 4 | 1 | |
| MORCH OTTO C | director | 37085 0.0881% | $160,207.20 | 2 | 16 |
| 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 |