| Date Filed | Type | Description |
| 08/04/2023 |
8-K
| Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Submission of Matters to a Vote of Security Holders... |
| 07/27/2023 |
10-Q
| Quarterly Report for the period ended June 30, 2023 |
| 07/26/2023 |
8-K
| Quarterly results |
| 06/06/2023 |
PRE 14A
| Form PRE 14A - Other preliminary proxy statements: |
| 05/31/2023 |
SD
| Form SD - Specialized disclosure report: |
| 05/26/2023 |
8-K
| Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements... |
| 05/17/2023 |
S-3/A
| Form S-3/A - Registration statement under Securities Act of 1933: [Amend] |
| 04/28/2023 |
10-Q
| Quarterly Report for the period ended March 31, 2023 |
| 04/28/2023 |
10-K/A
| Annual Report for the period ended December 31, 2022 [amend] |
| 04/26/2023 |
8-K
| Quarterly results |
| 04/04/2023 |
S-3
| Form S-3 - Registration statement under Securities Act of 1933: |
| 03/31/2023 |
10-K
| Annual Report for the period ended December 31, 2022 |
| 03/16/2023 |
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: |
| 03/13/2023 |
8-K
| Regulation FD Disclosure Interactive Data |
| 02/13/2023 |
SC 13G/A
| Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend] |
| 02/10/2023 |
SC 13G
| Neuberger Berman Group LLC reports a 8% stake in RIBBON COMMUNICATIONS INC |
| 01/13/2023 |
8-K
| Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements... |
| 10/28/2022 |
10-Q
| Quarterly Report for the period ended September 30, 2022 |
| 10/26/2022 |
8-K
| Quarterly results |
| 09/26/2022 |
EFFECT
| Form EFFECT - Notice of Effectiveness: |
| 09/21/2022 |
SC 13D/A
| Ribbon Communications Inc. reports a 0% stake in American Virtual Cloud Technologies, Inc. |
| 09/14/2022 |
S-3
| Form S-3 - Registration statement under Securities Act of 1933: |
| 09/08/2022 |
8-K
| Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements... |
| 08/25/2022 |
D
| Form D - Notice of Exempt Offering of Securities: |
| 08/18/2022 |
SC 13D/A
| Swarth Investments Ltd. reports a 16.4% stake in RIBBON COMMUNICATIONS INC. |
| 08/16/2022 |
SC 13D/A
| Form SC 13D/A - General statement of acquisition of beneficial ownership: [Amend] |
| 08/16/2022 |
8-K
| Quarterly results |
| 07/29/2022 |
S-8
| Form S-8 - Securities to be offered to employees in employee benefit plans: |
| 07/28/2022 |
10-Q
| Quarterly Report for the period ended June 30, 2022 |
| 07/27/2022 |
8-K
| Quarterly results |
| 07/05/2022 |
8-K
| Quarterly results |
| 05/31/2022 |
SD
| Form SD - Specialized disclosure report: |
| 05/27/2022 |
8-K
| Quarterly results |
| 05/10/2022 |
10-Q
| Quarterly Report for the period ended March 31, 2022 |
|