Hudson Technologies Inc /NY (HDSN) · Insider trading
What Hudson Technologies Inc /NY's directors, officers and largest holders bought and sold themselves, from the Form 4 each of them files with the SEC within two business days of a trade. Open-market purchases and sales first: those are the trades somebody chose to make at the market price.
Bought, 12 months
$6.79M
10 insiders, 28 trades
Sold, 12 months
$3.59M
1 insider, 0% under a plan
Net, 12 months
+$3.20M
bought less sold
Latest filing
2026-09-28
filings read to 2026-10-19
Who traded, two years
| Insider | Bought | Sold | Trades | Last trade | Holds after |
|---|---|---|---|---|---|
| Hartree Partners, LP10% owner | $6.55M | – | 16 | 2026-09-24 | 5,348,517 |
| Coleman Brian FOther | – | $3.59M | 1 | 2025-12-05 | 426,968 |
| Parrillo RichardDirector | $73,114 | – | 3 | 2026-05-14 | 24,195 |
| Abbatecola Vincent PDirector | $38,715 | – | 2 | 2025-11-17 | 169,748 |
| Sheriff AlanDirector | $25,376 | – | 1 | 2026-05-13 | 9,265 |
| Feeler Jeffrey RDirector | $25,092 | – | 1 | 2026-05-14 | 9,165 |
| Mansy Loan NguyenDirector | $24,814 | – | 2 | 2026-05-14 | 24,195 |
| Gaglione KennethDirector, President and CEO | $24,500 | – | 1 | 2026-05-13 | – |
| Prouty Eric ADirector | $24,200 | – | 1 | 2026-05-13 | 153,852 |
| Bertaux Brian J.Chief Financial Officer | $9,740 | – | 1 | 2026-05-19 | 2,000 |
| Bulgarino Nicole EDirector | $2,668 | – | 1 | 2026-05-14 | 11,048 |
Open-market purchases and sales
Newest first. “Plan” marks a trade made under a 10b5-1 plan set up in advance.
| Date | Insider | Trade | Shares | Price | Value | Holds after | Filing |
|---|---|---|---|---|---|---|---|
| 2026-09-24 | Hartree Partners, LP10% owner | Buy | 118,549 | 5.10 | $604,600 | 5,348,517 | Form 4 |
| 2026-09-23 | Hartree Partners, LP10% owner | Buy | 11,013 | 5.10 | $56,166 | 5,229,968 | Form 4 |
| 2026-09-21 | Hartree Partners, LP10% owner | Buy | 2,502 | 5.10 | $12,760 | 5,218,955 | Form 4 |
| 2026-09-16 | Hartree Partners, LP10% owner | Buy | 11,136 | 5.10 | $56,794 | 5,216,453 | Form 4 |
| 2026-09-02 | Hartree Partners, LP10% owner | Buy | 5,317 | 5.10 | $27,117 | 5,205,317 | Form 4 |
| 2026-08-25 | Hartree Partners, LP10% owner | Buy | 91,166 | 5.50 | $501,413 | 5,200,000 | Form 4 |
| 2026-08-24 | Hartree Partners, LP10% owner | Buy | 9,446 | 5.50 | $51,953 | 5,108,834 | Form 4 |
| 2026-08-12 | Hartree Partners, LP10% owner | Buy | 5,198 | 5.50 | $28,589 | 5,099,388 | Form 4 |
| 2026-07-29 | Hartree Partners, LP10% owner | Buy | 52,104 | 5.99 | $312,103 | 5,094,190 | Form 4 |
| 2026-07-21 | Hartree Partners, LP10% owner | Buy | 47,708 | 5.99 | $285,771 | 5,042,086 | Form 4 |
| 2026-07-20 | Hartree Partners, LP10% owner | Buy | 17,842 | 5.99 | $106,874 | 4,994,378 | Form 4 |
| 2026-07-07 | Hartree Partners, LP10% owner | Buy | 600 | 5.99 | $3,594 | 4,976,536 | Form 4 |
| 2026-07-06 | Hartree Partners, LP10% owner | Buy | 4,634 | 5.99 | $27,758 | 4,975,936 | Form 4 |
| 2026-07-02 | Hartree Partners, LP10% owner | Buy | 271,302 | 5.97 | $1.62M | 4,971,302 | Form 4 |
| 2026-07-01 | Hartree Partners, LP10% owner | Buy | 288,111 | 5.88 | $1.69M | 4,700,000 | Form 4 |
| 2026-06-30 | Hartree Partners, LP10% owner | Buy | 204,789 | 5.68 | $1.16M | 4,411,889 | Form 4 |
| 2026-05-19 | Bertaux Brian J.Chief Financial Officer | Buy | 2,000 | 4.87 | $9,740 | 2,000 | Form 4 |
| 2026-05-14 | Feeler Jeffrey RDirector | Buy | 5,100 | 4.92 | $25,092 | 9,165 | Form 4 |
| 2026-05-14 | Bulgarino Nicole EDirector | Buy | 550 | 4.85 | $2,668 | 11,048 | Form 4 |
| 2026-05-14 | Parrillo RichardDirector | Buy | 3,600 | 4.96 | $17,856 | 24,195 | Form 4 |
| 2026-05-14 | Parrillo RichardDirector | Buy | 1,400 | 4.97 | $6,958 | 25,595 | Form 4 |
| 2026-05-14 | Mansy Loan NguyenDirector | Buy | 3,600 | 4.96 | $17,856 | 24,195 | Form 4 |
| 2026-05-14 | Mansy Loan NguyenDirector | Buy | 1,400 | 4.97 | $6,958 | 25,595 | Form 4 |
| 2026-05-13 | Parrillo RichardDirector | Buy | 10,000 | 4.83 | $48,300 | 195,746 | Form 4/A |
| 2026-05-13 | Gaglione KennethDirector, President and CEO | Buyindirect | 5,000 | 4.90 | $24,500 | 5,000 | Form 4 |
| 2026-05-13 | Sheriff AlanDirector | Buy | 5,200 | 4.88 | $25,376 | 9,265 | Form 4 |
| 2026-05-13 | Prouty Eric ADirector | Buy | 5,000 | 4.84 | $24,200 | 153,852 | Form 4 |
| 2025-12-05 | Coleman Brian FOther | Sale | 484,616 | 7.40 | $3.59M | 426,968 | Form 4/A |
| 2025-11-17 | Abbatecola Vincent PDirector | Buy | 3,500 | 6.79 | $23,765 | 169,748 | Form 4 |
| 2024-11-07 | Abbatecola Vincent PDirector | Buy | 2,500 | 5.98 | $14,950 | 161,841 | Form 4 |
Grants, exercises and other transactions
Pay, tax and paperwork rather than a choice to trade at the market price. Two years.
11 × grant or award5 × option exercise5 × shares withheld for tax
Show them
| Date | Insider | What | Shares | Price | Holds after | Filing |
|---|---|---|---|---|---|---|
| 2026-06-17 | Feeler Jeffrey RDirector | Grant or award A | +3,219 | – | 12,384 | Form 4 |
| 2026-06-17 | Mansy Loan NguyenDirector | Grant or award A | +8,881 | – | 34,476 | Form 4 |
| 2026-06-17 | Prouty Eric ADirector | Grant or award A | +4,440 | – | 158,292 | Form 4 |
| 2026-06-17 | Sheriff AlanDirector | Grant or award A | +3,219 | – | 12,484 | Form 4 |
| 2026-04-10 | Feeler Jeffrey RDirector | Grant or award A | +4,065 | – | 4,065 | Form 4 |
| 2026-04-10 | Sheriff AlanDirector | Grant or award A | +4,065 | – | 4,065 | Form 4 |
| 2026-01-08 | Houghton KathleenDirector, Sr. VP-Sales and Marketing | Option exercise M | +120,000 | 0.75 | 161,163 | Form 4 |
| 2026-01-08 | Houghton KathleenDirector, Sr. VP-Sales and Marketing | Shares withheld for tax F | −44,873 | 7.10 | 116,290 | Form 4 |
| 2026-01-08 | Houghton KathleenDirector, Sr. VP-Sales and Marketing | Option exercise M | +47,619 | 1.60 | 163,909 | Form 4 |
| 2026-01-08 | Houghton KathleenDirector, Sr. VP-Sales and Marketing | Shares withheld for tax F | −21,797 | 7.10 | 142,112 | Form 4 |
| 2026-01-08 | Houghton KathleenDirector, Sr. VP-Sales and Marketing | Option exercise M | +50,888 | 3.81 | 193,000 | Form 4 |
| 2026-01-08 | Houghton KathleenDirector, Sr. VP-Sales and Marketing | Shares withheld for tax F | −34,382 | 7.10 | 158,618 | Form 4 |
| 2025-09-24 | Abbatecola Vincent PDirector | Option exercise M | +4,744 | 7.35 | 169,767 | Form 4 |
| 2025-09-24 | Abbatecola Vincent PDirector | Shares withheld for tax F | −3,519 | 9.91 | 166,248 | Form 4 |
| 2025-07-31 | Prouty Eric ADirector | Option exercise M | +4,744 | 7.35 | 152,565 | Form 4 |
| 2025-07-31 | Prouty Eric ADirector | Shares withheld for tax F | −3,713 | 9.39 | 148,852 | Form 4 |
| 2025-06-18 | Prouty Eric ADirector | Grant or award A | +3,182 | – | 147,821 | Form 4 |
| 2025-06-18 | Parrillo RichardDirector | Grant or award A | +3,182 | – | 185,746 | Form 4 |
| 2025-06-18 | Abbatecola Vincent PDirector | Grant or award A | +3,182 | – | 165,023 | Form 4 |
| 2025-06-18 | Mansy Loan NguyenDirector | Grant or award A | +6,365 | – | 20,595 | Form 4 |
| 2025-06-18 | Bulgarino Nicole EDirector | Grant or award A | +3,182 | – | 10,498 | Form 4 |
How to read it
- Buy, sale
- Code P and S on the form: shares bought or sold in the market, at the market price. The other codes are mostly pay (a grant, an option exercised) or tax (shares the company withheld), and say little about what the insider thinks of the price.
- Plan
- A sale or purchase under a Rule 10b5-1 plan, set up in advance and running on its own schedule. Since April 2023 the form has a box for it. Much executive selling is planned and says more about diversifying than about the company.
- Holds after
- The shares the insider still held after the trade, in the form the trade was in (directly, or indirectly through a trust or a fund).
- Value
- Shares times the price the form reports, which is often an average over several fills on the day.
Read from the SEC's own quarterly data sets of Forms 3, 4 and 5, and from each day's filings since the last one. A correcting amendment replaces the lines it restates. Every row links to its filing. None of this is advice: insiders sell for many reasons, and buy for fewer.