Ribbon Communications Inc. SEC filings RBBN
Ribbon Communications Inc. has 732 filings in SEC EDGAR's recent list, going back to Jun 28, 2017. Its latest annual report, Form ARS, was filed on Apr 17, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Oct 28, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on Oct 27, 2026 (results of operations). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 4 | Insider transaction | Nov 3, 2026 | Oct 31, 2026 |
| 4 | Insider transaction | Nov 2, 2026 | Oct 30, 2026 |
| 10-Q | Quarterly report | Oct 28, 2026 | Sep 30, 2026 |
| 8-K |
Current report
Results of operations
|
Oct 27, 2026 | Oct 27, 2026 |
| 4 | Insider transaction | Oct 19, 2026 | Oct 15, 2026 |
| 4 | Insider transaction | Oct 19, 2026 | Oct 15, 2026 |
| 4 | Insider transaction | Oct 19, 2026 | Oct 15, 2026 |
| 10-Q | Quarterly report | Jul 31, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations
|
Jul 28, 2026 | Jul 28, 2026 |
| 4 | Insider transaction | Jul 15, 2026 | Jul 15, 2026 |
| 4 | Insider transaction | Jul 15, 2026 | Jul 15, 2026 |
| 4 | Insider transaction | Jun 17, 2026 | Jun 15, 2026 |
| 4 | Insider transaction | Jun 17, 2026 | Jun 15, 2026 |
| 4 | Insider transaction | Jun 17, 2026 | Jun 15, 2026 |
| 4 | Insider transaction | Jun 17, 2026 | Jun 15, 2026 |
| 4 | Insider transaction | Jun 17, 2026 | Jun 15, 2026 |
| 4 | Insider transaction | Jun 17, 2026 | Jun 15, 2026 |
| 4 | Insider transaction | Jun 17, 2026 | Jun 15, 2026 |
| 4 | Insider transaction | Jun 17, 2026 | Jun 15, 2026 |
| 4 | Insider transaction | Jun 17, 2026 | Jun 15, 2026 |
| 4 | Insider transaction | Jun 17, 2026 | Jun 15, 2026 |
| 4 | Insider transaction | Jun 17, 2026 | Jun 15, 2026 |
| 8-K |
Current report
Regulation FD disclosure
|
Jun 17, 2026 | Jun 17, 2026 |
| 8-K |
Current report
Shareholder vote results
|
Jun 5, 2026 | Jun 3, 2026 |
| SD | Specialized disclosure (conflict minerals) | May 29, 2026 | — |
| 4 | Insider transaction | May 19, 2026 | Apr 17, 2026 |
| 4 | Insider transaction | May 19, 2026 | Apr 17, 2026 |
| 4 | Insider transaction | May 19, 2026 | Apr 17, 2026 |
| 4 | Insider transaction | May 19, 2026 | Apr 17, 2026 |
| 10-Q | Quarterly report | May 6, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations, Officer or director change
|
Apr 28, 2026 | Apr 28, 2026 |
| 4 | Insider transaction | Apr 17, 2026 | Apr 15, 2026 |
| 4 | Insider transaction | Apr 17, 2026 | Apr 15, 2026 |
| 4 | Insider transaction | Apr 17, 2026 | Apr 15, 2026 |
| 4 | Insider transaction | Apr 17, 2026 | Apr 15, 2026 |
| ARS | Annual report to shareholders | Apr 17, 2026 | Dec 31, 2025 |
| DEF 14A | Proxy statement | Apr 17, 2026 | Jun 3, 2026 |
| 3 | Initial insider ownership | Apr 15, 2026 | Apr 15, 2026 |
| 8-K |
Current report
Officer or director change
|
Apr 15, 2026 | Apr 15, 2026 |
| 10-K | Annual report | Feb 26, 2026 | Dec 31, 2025 |
| 4 | Insider transaction | Feb 13, 2026 | Feb 10, 2026 |
| 8-K |
Current report
Results of operations
|
Feb 5, 2026 | Feb 5, 2026 |
| 4 | Insider transaction | Jan 20, 2026 | Jan 15, 2026 |
| 4 | Insider transaction | Jan 20, 2026 | Jan 15, 2026 |
| 4 | Insider transaction | Dec 16, 2025 | Dec 15, 2025 |
| S-8 | Employee stock plan registration | Dec 10, 2025 | — |
| 4 | Insider transaction | Nov 4, 2025 | Oct 31, 2025 |
| 3 | Initial insider ownership | Oct 27, 2025 | Oct 20, 2025 |
| 10-Q | Quarterly report | Oct 23, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations
|
Oct 22, 2025 | Oct 22, 2025 |
| 4 | Insider transaction | Oct 17, 2025 | Oct 17, 2025 |
| 4 | Insider transaction | Oct 17, 2025 | Oct 17, 2025 |
| 4 | Insider transaction | Oct 17, 2025 | Oct 17, 2025 |
| 4 | Insider transaction | Oct 17, 2025 | Oct 15, 2025 |
| 4 | Insider transaction | Oct 17, 2025 | Oct 15, 2025 |
| 4 | Insider transaction | Oct 17, 2025 | Oct 15, 2025 |
| 4 | Insider transaction | Oct 17, 2025 | Oct 15, 2025 |
| 4 | Insider transaction | Sep 8, 2025 | Sep 5, 2025 |
| 4 | Insider transaction | Sep 8, 2025 | Sep 4, 2025 |
| 144 | Notice of proposed sale | Sep 8, 2025 | — |
| 144 | Notice of proposed sale | Sep 8, 2025 | — |
| 144 | Notice of proposed sale | Sep 5, 2025 | — |
| 144 | Notice of proposed sale | Sep 4, 2025 | — |
| 8-K |
Current report
Officer or director change
|
Aug 29, 2025 | Aug 29, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2025 | — |
| 10-Q | Quarterly report | Jul 24, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations
|
Jul 23, 2025 | Jul 23, 2025 |
| 4 | Insider transaction | Jul 17, 2025 | Jul 15, 2025 |
| S-8 | Employee stock plan registration | Jul 2, 2025 | — |
| 4 | Insider transaction | Jun 18, 2025 | Jun 16, 2025 |
| 4 | Insider transaction | Jun 18, 2025 | Jun 16, 2025 |
| 4 | Insider transaction | Jun 18, 2025 | Jun 16, 2025 |
| 4 | Insider transaction | Jun 18, 2025 | Jun 16, 2025 |
| 4 | Insider transaction | Jun 18, 2025 | Jun 16, 2025 |
| 4 | Insider transaction | Jun 18, 2025 | Jun 16, 2025 |
| 4 | Insider transaction | Jun 17, 2025 | Jun 15, 2025 |
| 8-K |
Current report
Officer or director change, Bylaw or fiscal year change, Shareholder vote results
|
May 30, 2025 | May 28, 2025 |
| SD | Specialized disclosure (conflict minerals) | May 30, 2025 | — |
| 4 | Insider transaction | May 19, 2025 | May 15, 2025 |
| 4 | Insider transaction | May 19, 2025 | May 15, 2025 |
| 4 | Insider transaction | May 19, 2025 | May 15, 2025 |
| 4 | Insider transaction | May 19, 2025 | May 15, 2025 |
| 4 | Insider transaction | May 19, 2025 | May 15, 2025 |
| 10-Q | Quarterly report | Apr 30, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations
|
Apr 29, 2025 | Apr 29, 2025 |
| 4 | Insider transaction | Apr 22, 2025 | Apr 17, 2025 |
| 4 | Insider transaction | Apr 22, 2025 | Apr 17, 2025 |
| 4 | Insider transaction | Apr 22, 2025 | Apr 17, 2025 |
| 4 | Insider transaction | Apr 22, 2025 | Apr 17, 2025 |
| 4 | Insider transaction | Apr 22, 2025 | Apr 17, 2025 |
| 4 | Insider transaction | Apr 17, 2025 | Apr 15, 2025 |
| ARS | Annual report to shareholders | Apr 14, 2025 | Dec 31, 2024 |
| DEF 14A | Proxy statement | Apr 14, 2025 | May 28, 2025 |
| 4 | Insider transaction | Apr 11, 2025 | Apr 9, 2025 |
| PRE 14A | Preliminary proxy statement | Apr 2, 2025 | May 28, 2025 |
| 4 | Insider transaction | Mar 18, 2025 | Mar 15, 2025 |
| 4 | Insider transaction | Mar 18, 2025 | Mar 15, 2025 |
| 4 | Insider transaction | Mar 18, 2025 | Mar 15, 2025 |
| 4/A | Amended statement of changes in beneficial ownership of securities | Mar 18, 2025 | Apr 17, 2024 |
| 4/A | Amended statement of changes in beneficial ownership of securities | Mar 18, 2025 | Apr 17, 2024 |
| 4/A | Amended statement of changes in beneficial ownership of securities | Mar 18, 2025 | Apr 17, 2024 |
| 4/A | Amended statement of changes in beneficial ownership of securities | Mar 18, 2025 | Apr 17, 2024 |
| 10-K | Annual report | Feb 27, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Results of operations
|
Feb 12, 2025 | Feb 12, 2025 |
| 4 | Insider transaction | Jan 16, 2025 | Jan 15, 2025 |
| 4 | Insider transaction | Dec 16, 2024 | Dec 15, 2024 |
| 3 | Initial insider ownership | Nov 4, 2024 | Nov 1, 2024 |
| S-8 | Employee stock plan registration | Oct 28, 2024 | — |
| 10-Q | Quarterly report | Oct 24, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Results of operations
|
Oct 23, 2024 | Oct 23, 2024 |
| 4 | Insider transaction | Oct 21, 2024 | Oct 17, 2024 |
| 4 | Insider transaction | Oct 21, 2024 | Oct 17, 2024 |
| 4 | Insider transaction | Oct 21, 2024 | Oct 17, 2024 |
| 4 | Insider transaction | Oct 21, 2024 | Oct 17, 2024 |
| 4 | Insider transaction | Oct 21, 2024 | Oct 17, 2024 |
| 4 | Insider transaction | Oct 21, 2024 | Oct 17, 2024 |
| 4 | Insider transaction | Oct 17, 2024 | Oct 15, 2024 |
| 4 | Insider transaction | Oct 17, 2024 | Oct 15, 2024 |
| 8-K |
Current report
Officer or director change
|
Oct 4, 2024 | Oct 3, 2024 |
| 4 | Insider transaction | Sep 16, 2024 | Sep 13, 2024 |
| 144 | Notice of proposed sale | Sep 13, 2024 | — |
| 8-K |
Current report
Officer or director change
|
Aug 13, 2024 | Aug 13, 2024 |
| 10-Q | Quarterly report | Jul 29, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Results of operations
|
Jul 24, 2024 | Jul 24, 2024 |
| 4 | Insider transaction | Jul 18, 2024 | Jul 17, 2024 |
| 4 | Insider transaction | Jul 18, 2024 | Jul 16, 2024 |
| 8-K |
Current report
Material agreement, Agreement ended, New debt, Other events
|
Jun 24, 2024 | Jun 21, 2024 |
| 4 | Insider transaction | Jun 18, 2024 | Jun 15, 2024 |
| 4 | Insider transaction | Jun 18, 2024 | Jun 15, 2024 |
| 4 | Insider transaction | Jun 18, 2024 | Jun 15, 2024 |
| 4 | Insider transaction | Jun 18, 2024 | Jun 15, 2024 |
| 4 | Insider transaction | Jun 18, 2024 | Jun 15, 2024 |
| 4 | Insider transaction | Jun 18, 2024 | Jun 15, 2024 |
| 4 | Insider transaction | Jun 18, 2024 | Jun 15, 2024 |
| 8-K |
Current report
Shareholder vote results
|
Jun 6, 2024 | Jun 4, 2024 |
| SD | Specialized disclosure (conflict minerals) | May 31, 2024 | — |
| 4 | Insider transaction | May 17, 2024 | May 15, 2024 |
| 4 | Insider transaction | May 17, 2024 | May 15, 2024 |
| 4 | Insider transaction | May 17, 2024 | May 15, 2024 |
| 4 | Insider transaction | May 17, 2024 | May 15, 2024 |
| 4 | Insider transaction | May 17, 2024 | May 15, 2024 |
| 10-Q | Quarterly report | May 15, 2024 | Mar 31, 2024 |
| NT 10-Q | Filing | May 13, 2024 | Mar 31, 2024 |
| 8-K |
Current report
Results of operations
|
Apr 24, 2024 | Apr 24, 2024 |
| 4 | Insider transaction | Apr 19, 2024 | Apr 17, 2024 |
| 4 | Insider transaction | Apr 19, 2024 | Apr 17, 2024 |
| 4 | Insider transaction | Apr 19, 2024 | Apr 17, 2024 |
| 4 | Insider transaction | Apr 19, 2024 | Apr 17, 2024 |
| 4 | Insider transaction | Apr 19, 2024 | Apr 17, 2024 |
| 4 | Insider transaction | Apr 19, 2024 | Apr 17, 2024 |
| 4 | Insider transaction | Apr 16, 2024 | Apr 15, 2024 |
| DEF 14A | Proxy statement | Apr 12, 2024 | Jun 4, 2024 |
| 4 | Insider transaction | Mar 18, 2024 | Mar 15, 2024 |
| 4 | Insider transaction | Mar 18, 2024 | Mar 15, 2024 |
| 4 | Insider transaction | Mar 18, 2024 | Mar 15, 2024 |
| 4 | Insider transaction | Mar 18, 2024 | Mar 15, 2024 |
| 4 | Insider transaction | Mar 18, 2024 | Mar 15, 2024 |
| 8-K |
Current report
Other events
|
Mar 13, 2024 | Mar 13, 2024 |
| 4 | Insider transaction | Mar 6, 2024 | Mar 4, 2024 |
| 4 | Insider transaction | Mar 5, 2024 | Mar 5, 2024 |
| 4/A | Amended statement of changes in beneficial ownership of securities | Mar 4, 2024 | Mar 1, 2024 |
| 4 | Insider transaction | Mar 1, 2024 | Mar 1, 2024 |
| 4 | Insider transaction | Mar 1, 2024 | Feb 28, 2024 |
| 4 | Insider transaction | Feb 28, 2024 | Feb 26, 2024 |
| 10-K | Annual report | Feb 28, 2024 | Dec 31, 2023 |
| 144 | Notice of proposed sale | Feb 27, 2024 | — |
| 4 | Insider transaction | Feb 23, 2024 | Feb 21, 2024 |
| 144 | Notice of proposed sale | Feb 21, 2024 | — |
| 8-K |
Current report
Results of operations
|
Feb 14, 2024 | Feb 14, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 12, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 12, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Feb 9, 2024 | — |
| 4 | Insider transaction | Jan 19, 2024 | Jan 18, 2024 |
| 4 | Insider transaction | Jan 19, 2024 | Jan 18, 2024 |
| 4 | Insider transaction | Jan 19, 2024 | Jan 18, 2024 |
| 4 | Insider transaction | Jan 19, 2024 | Jan 18, 2024 |
| 4 | Insider transaction | Jan 17, 2024 | Jan 16, 2024 |
| 4 | Insider transaction | Dec 18, 2023 | Dec 15, 2023 |
| 4 | Insider transaction | Dec 11, 2023 | Dec 7, 2023 |
| 10-Q | Quarterly report | Oct 26, 2023 | Sep 30, 2023 |
| 8-K |
Current report
Results of operations
|
Oct 25, 2023 | Oct 25, 2023 |
| 4 | Insider transaction | Oct 23, 2023 | Oct 18, 2023 |
| 4 | Insider transaction | Oct 23, 2023 | Oct 18, 2023 |
| 4 | Insider transaction | Oct 23, 2023 | Oct 18, 2023 |
| 4 | Insider transaction | Oct 23, 2023 | Oct 18, 2023 |
| 4 | Insider transaction | Oct 17, 2023 | Oct 16, 2023 |
| 4 | Insider transaction | Sep 19, 2023 | Sep 15, 2023 |
| 4 | Insider transaction | Sep 19, 2023 | Sep 15, 2023 |
| 4 | Insider transaction | Sep 19, 2023 | Sep 15, 2023 |
| 4 | Insider transaction | Sep 19, 2023 | Sep 15, 2023 |
| 8-K |
Current report
Bylaw or fiscal year change, Shareholder vote results
|
Aug 4, 2023 | Aug 3, 2023 |
| 10-Q | Quarterly report | Jul 27, 2023 | Jun 30, 2023 |
| 8-K |
Current report
Results of operations
|
Jul 26, 2023 | Jul 26, 2023 |
| 4 | Insider transaction | Jul 18, 2023 | Jul 17, 2023 |
| 4 | Insider transaction | Jul 18, 2023 | Jul 15, 2023 |
| DEF 14A | Proxy statement | Jun 20, 2023 | Aug 3, 2023 |
| 4 | Insider transaction | Jun 20, 2023 | Jun 16, 2023 |
| 4 | Insider transaction | Jun 20, 2023 | Jun 19, 2023 |
| 4 | Insider transaction | Jun 16, 2023 | Jun 15, 2023 |
| 4 | Insider transaction | Jun 16, 2023 | Jun 15, 2023 |
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Company profile
- Industry
- Services-Computer Integrated Systems Design (SIC 7373)
- Listed as
- RBBN (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Plano, TX
- SEC filer status
- Accelerated filer
- SEC CIK
- 1708055
- Former names
- Sonus Networks, Inc. (until Nov 28, 2017); Solstice Sapphire Investments, Inc. (until Oct 27, 2017)
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.