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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 3 | Initial insider ownership | Apr 15, 2026 | Apr 15, 2026 |
| 4 | Insider transaction | Feb 13, 2026 | Feb 10, 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 |
| 4 | Insider transaction | Nov 4, 2025 | Oct 31, 2025 |
| 3 | Initial insider ownership | Oct 27, 2025 | Oct 20, 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 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2025 | — |
| 4 | Insider transaction | Jul 17, 2025 | Jul 15, 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 |
| 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 |
| 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 |
| 4 | Insider transaction | Apr 11, 2025 | Apr 9, 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 |
| 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 |
| 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 |
| 4 | Insider transaction | Sep 16, 2024 | Sep 13, 2024 |
| 144 | Notice of proposed sale | Sep 13, 2024 | — |
| 4 | Insider transaction | Jul 18, 2024 | Jul 17, 2024 |
| 4 | Insider transaction | Jul 18, 2024 | Jul 16, 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 | — |
| 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 |
| 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 |
| 4 | Insider transaction | Jul 18, 2023 | Jul 17, 2023 |
| 4 | Insider transaction | Jul 18, 2023 | Jul 15, 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 |
| 4 | Insider transaction | Jun 16, 2023 | Jun 15, 2023 |
| 4 | Insider transaction | Jun 16, 2023 | Jun 15, 2023 |
| 4 | Insider transaction | Jun 16, 2023 | Jun 15, 2023 |
| 4 | Insider transaction | Jun 16, 2023 | Jun 15, 2023 |
| 4 | Insider transaction | Jun 16, 2023 | Jun 15, 2023 |
| 4 | Insider transaction | May 5, 2023 | May 3, 2023 |
| 4 | Insider transaction | May 5, 2023 | May 4, 2023 |
| 4 | Insider transaction | Apr 19, 2023 | Apr 17, 2023 |
| 4 | Insider transaction | Apr 19, 2023 | Apr 17, 2023 |
| 4 | Insider transaction | Apr 19, 2023 | Apr 17, 2023 |
| 4 | Insider transaction | Apr 19, 2023 | Apr 17, 2023 |
| 4 | Insider transaction | Apr 19, 2023 | Apr 17, 2023 |
| 4 | Insider transaction | Apr 19, 2023 | Apr 17, 2023 |
| 4 | Insider transaction | Apr 19, 2023 | Apr 17, 2023 |
| 4 | Insider transaction | Apr 3, 2023 | Mar 30, 2023 |
| 4 | Insider transaction | Mar 31, 2023 | Mar 30, 2023 |
| 4 | Insider transaction | Mar 17, 2023 | Mar 15, 2023 |
| 4 | Insider transaction | Mar 17, 2023 | Mar 15, 2023 |
| 4 | Insider transaction | Mar 17, 2023 | Mar 15, 2023 |
| 4 | Insider transaction | Mar 17, 2023 | Mar 15, 2023 |
| 3 | Initial insider ownership | Mar 1, 2023 | Feb 22, 2023 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2023 | — |
| SC 13G | Ownership over 5% (passive) | Feb 10, 2023 | — |
| 4 | Insider transaction | Jan 19, 2023 | Jan 17, 2023 |
| 4 | Insider transaction | Jan 19, 2023 | Jan 17, 2023 |
| 4 | Insider transaction | Jan 19, 2023 | Jan 17, 2023 |
| 4 | Insider transaction | Jan 19, 2023 | Jan 17, 2023 |
| 4 | Insider transaction | Jan 19, 2023 | Jan 17, 2023 |
| 4 | Insider transaction | Dec 19, 2022 | Dec 19, 2022 |
| 4 | Insider transaction | Oct 19, 2022 | Oct 17, 2022 |
| 4 | Insider transaction | Oct 19, 2022 | Oct 17, 2022 |
| 4 | Insider transaction | Sep 21, 2022 | Aug 29, 2022 |
| SC 13D/A | Amended ownership over 5% (active) | Sep 21, 2022 | — |
| 4 | Insider transaction | Sep 19, 2022 | Sep 15, 2022 |
| 4 | Insider transaction | Sep 19, 2022 | Sep 15, 2022 |
| 4 | Insider transaction | Sep 19, 2022 | Sep 15, 2022 |
| 4 | Insider transaction | Sep 19, 2022 | Sep 15, 2022 |
| 4 | Insider transaction | Sep 19, 2022 | Sep 15, 2022 |
| 4 | Insider transaction | Sep 19, 2022 | Sep 15, 2022 |
| 4 | Insider transaction | Sep 19, 2022 | Sep 15, 2022 |
| 3 | Initial insider ownership | Sep 12, 2022 | Sep 7, 2022 |
| SC 13D/A | Amended ownership over 5% (active) | Aug 18, 2022 | — |
| 4 | Insider transaction | Aug 18, 2022 | Aug 16, 2022 |
| 4 | Insider transaction | Aug 16, 2022 | Aug 11, 2022 |
| SC 13D/A | Amended ownership over 5% (active) | Aug 16, 2022 | — |
| 4 | Insider transaction | Jul 19, 2022 | Jul 15, 2022 |
| 4 | Insider transaction | Jul 19, 2022 | Jul 15, 2022 |
| 4 | Insider transaction | Jun 21, 2022 | Jun 21, 2022 |
| 4 | Insider transaction | Jun 17, 2022 | Jun 15, 2022 |
| 4 | Insider transaction | Jun 17, 2022 | Jun 15, 2022 |
| 4 | Insider transaction | Jun 17, 2022 | Jun 15, 2022 |
| 4 | Insider transaction | Jun 17, 2022 | Jun 15, 2022 |
| 4 | Insider transaction | Jun 17, 2022 | Jun 15, 2022 |
Showing 200 filings, the most recent 200. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
New to this? Read What Are SEC Filings? 10-K, 10-Q, 8-K and Other Forms Explained.
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)
Other Services-Computer Integrated Systems Design companies
- Samsara Inc. IOT
- Leidos Holdings, Inc. LDOS
- Caci International Inc /DE/ CACI
- GoDaddy Inc. GDDY
- IonQ, Inc. IONQ
- Jack Henry & Associates Inc JKHY
- Quantinuum Inc. QNT
- Aurora Innovation, Inc. AUR
All 56 Services-Computer Integrated Systems Design companies
Source: SEC EDGAR filings. This is company-reported data, not investment advice.