| Date Filed | Type | Description |
| 10/12/2023 |
8-K
| Quarterly results |
| 08/22/2023 |
8-K
| Termination of a Material Definitive Agreement, Regulation FD Disclosure, Financial Statements and Exhibits ... |
| 08/08/2023 |
10-Q
| Quarterly Report for the period ended June 30, 2023 |
| 08/02/2023 |
8-K
| Quarterly results |
| 06/08/2023 |
8-K
| Submission of Matters to a Vote of Security Holders Interactive Data |
| 05/09/2023 |
10-Q
| Quarterly Report for the period ended March 31, 2023 |
| 04/26/2023 |
ARS
| Form ARS - Annual Report to Security Holders: |
| 04/26/2023 |
DEFA14A
| Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material: |
| 04/26/2023 |
DEF 14A
| Form DEF 14A - Other definitive proxy statements: |
| 03/14/2023 |
10-K
| Annual Report for the period ended December 31, 2022 |
| 03/08/2023 |
8-K
| Quarterly results |
| 02/23/2023 |
8-K/A
| Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements... |
| 02/13/2023 |
SC 13G/A
| Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend] |
| 02/02/2023 |
SC 13G/A
| Riva Ridge Capital Management LP reports a 5.4% stake in Hudson Technologies, Inc. |
| 01/24/2023 |
EFFECT
| Form EFFECT - Notice of Effectiveness: |
| 01/13/2023 |
S-3
| Form S-3 - Registration statement under Securities Act of 1933: |
| 11/08/2022 |
10-Q
| Quarterly Report for the period ended September 30, 2022 |
| 11/02/2022 |
8-K
| Quarterly results |
| 10/03/2022 |
8-K
| Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements... |
| 09/28/2022 |
SC 13G/A
| Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend] |
| 08/08/2022 |
10-Q
| Quarterly Report for the period ended June 30, 2022 |
| 08/03/2022 |
8-K
| Quarterly results |
| 06/10/2022 |
8-K
| Quarterly results |
| 05/10/2022 |
10-Q
| Quarterly Report for the period ended March 31, 2022 |
| 05/04/2022 |
8-K
| Quarterly results |
| 04/26/2022 |
DEFA14A
| Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material: |
| 04/26/2022 |
DEF 14A
| Form DEF 14A - Other definitive proxy statements: |
| 03/24/2022 |
10-K
| Annual Report for the period ended December 31, 2021 |
| 03/22/2022 |
SC 13G
| Goldberg Capital Management reports a 6.1% stake in Hudson Technologies, Inc. |
| 03/16/2022 |
NT 10-K
| Form NT 10-K - Notification of inability to timely file Form 10-K 405, 10-K, 10-KSB 405, 10-KSB, 10-KT, or 10-KT405: |
| 03/08/2022 |
8-K
| Quarterly results |
| 03/03/2022 |
8-K
| Quarterly results |
| 02/14/2022 |
SC 13G/A
| ArrowMark Colorado Holdings LLC reports a 7% stake in Hudson Technologies, Inc. |
| 02/14/2022 |
SC 13G
| COOPER CREEK PARTNERS MANAGEMENT LLC reports a 9.3% stake in Hudson Technologies Inc |
|