| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Stoody Robert | Senior VP - Operations | C/O HUDSON TECHNOLOGIES, INC., 300 TICE BOULEVARD, SUITE 290, WOODCLIFF LAKE | /s/ Robert Stoody | 02 Feb 2026 | 0002107144 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| holding | HDSN | Common Stock | 70,047 | 30 Jan 2026 | By Stoody Family Trust |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Underlying Class | Amount | Exercise Price | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| holding | HDSN | Stock Option | 30 Jan 2026 | Common Stock | 38,147 | $10.09 | Direct | |||||||
| holding | HDSN | Stock Option | 30 Jan 2026 | Common Stock | 5,902 | $14.89 | Direct | |||||||
| holding | HDSN | Stock Option | 30 Jan 2026 | Common Stock | 24,849 | $5.95 | Direct | F1 |
| Id | Content |
|---|---|
| F1 | Vests on December 31, 2027 dependent upon achievement of stock price and earnings per share targets. |