HDSN
Hudson Technologies, Inc.
NASDAQ · Basic Materials · Chemicals - Specialty · US
$5.27
+0.29%11
Insider buys (3m)
0
Insider sells (3m)
$5.8M
Net value (3m)
-1.6%
Price return (3m)
Form 4 filings
| Date | Insider | Activity | Shares | Price |
|---|---|---|---|---|
| Aug 26, 2026 | Hartree Partners, LP · 10 percent owner | Purchase | 9,446 | $5.50 |
| Aug 26, 2026 | Hartree Partners, LP · 10 percent owner | Purchase | 91,166 | $5.50 |
| Aug 14, 2026 | Hartree Partners, LP · 10 percent owner | Purchase | 5,198 | $5.50 |
| Jul 31, 2026 | Hartree Partners, LP · 10 percent owner | Purchase | 52,104 | $5.99 |
| Jul 22, 2026 | Hartree Partners, LP · 10 percent owner | Purchase | 17,842 | $5.99 |
| Jul 22, 2026 | Hartree Partners, LP · 10 percent owner | Purchase | 47,708 | $5.99 |
| Jul 8, 2026 | Hartree Partners, LP · 10 percent owner | Purchase | 600 | $5.99 |
| Jul 8, 2026 | Hartree Partners, LP · 10 percent owner | Purchase | 4,634 | $5.99 |
| Jul 2, 2026 | Hartree Partners, LP · 10 percent owner | Purchase | 271,302 | $5.97 |
| Jul 2, 2026 | Hartree Partners, LP · 10 percent owner | Purchase | 288,111 | $5.88 |
| Jul 2, 2026 | Hartree Partners, LP · 10 percent owner | Purchase | 204,789 | $5.68 |
| Jun 22, 2026 | Feeler Jeffrey R · director | A-Award | 3,219 | $0.00 |
| Jun 22, 2026 | Parrillo Richard · director | A-Award | 31,780 | $5.63 |
| Jun 22, 2026 | Sheriff Alan · director | A-Award | 15,360 | $5.63 |
| Jun 22, 2026 | Mansy Loan Nguyen · director | A-Award | 21,186 | $5.63 |
| Jun 22, 2026 | Prouty Eric A · director | A-Award | 21,186 | $5.63 |
| Jun 22, 2026 | Sheriff Alan · director | A-Award | 3,219 | $0.00 |
| Jun 22, 2026 | Bulgarino Nicole E · director | A-Award | 31,780 | $5.63 |
| Jun 22, 2026 | Prouty Eric A · director | A-Award | 4,440 | $0.00 |
| Jun 22, 2026 | Mansy Loan Nguyen · director | A-Award | 8,881 | $0.00 |
| Jun 22, 2026 | Feeler Jeffrey R · director | A-Award | 15,360 | $5.63 |
| May 21, 2026 | Parrillo Richard · director | Purchase | 10,000 | $4.83 |
| May 21, 2026 | Bertaux Brian J. · officer: Chief Financial Officer | Purchase | 2,000 | $4.87 |
| May 15, 2026 | Sheriff Alan · director | Purchase | 5,200 | $4.88 |
| May 15, 2026 | Bulgarino Nicole E · director | Purchase | 550 | $4.84 |
| May 15, 2026 | Gaglione Kenneth · director, officer: President and CEO | Purchase | 5,000 | $4.89 |
| May 15, 2026 | Parrillo Richard · director | Purchase | 1,400 | $4.97 |
| May 15, 2026 | Feeler Jeffrey R · director | Purchase | 5,100 | $4.92 |
| May 15, 2026 | Prouty Eric A · director | Purchase | 5,000 | $4.84 |
| May 15, 2026 | Parrillo Richard · director | Purchase | 3,600 | $4.96 |
Institutional positioning
13F filings over the trailing two quarters
New 52Increased 94Reduced 112Sold out 31
| Filer | Action | Shares | Filed |
|---|---|---|---|
| Hartree Partners, LP | Increased | 4,411,889 | Aug 12, 2026 |
| HARTREE PARTNERS, LP | Unchanged | 3,800,000 | May 12, 2026 |
| WESTERLY CAPITAL MANAGEMENT, LLC | Increased | 3,380,000 | Aug 14, 2026 |
| WESTERLY CAPITAL MANAGEMENT, LLC | Increased | 3,175,000 | May 15, 2026 |
| BLACKROCK, INC. | Reduced | 2,862,539 | May 13, 2026 |
| BlackRock, Inc. | Reduced | 2,840,272 | Aug 7, 2026 |
| DIMENSIONAL FUND ADVISORS LP | Increased | 2,148,311 | May 7, 2026 |
| DIMENSIONAL FUND ADVISORS LP | Reduced | 1,967,914 | Aug 11, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 1,660,146 | May 15, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | Reduced | 1,654,259 | Aug 13, 2026 |
| RENAISSANCE TECHNOLOGIES LLC | Reduced | 1,504,250 | May 14, 2026 |
| AMERICAN CENTURY COMPANIES INC | Increased | 1,487,774 | May 15, 2026 |
| RENAISSANCE TECHNOLOGIES LLC | Reduced | 1,442,115 | Aug 13, 2026 |
| NEW SOUTH CAPITAL MANAGEMENT INC | Reduced | 1,241,223 | May 13, 2026 |
| AMERICAN CENTURY COMPANIES INC | Reduced | 1,169,462 | Aug 12, 2026 |
Insider activity from SEC Form 4; institutional positioning from 13F filings · Latest filing Aug 26, 2026