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 |
|---|---|---|---|
| DEF 14A | Proxy statement | Apr 17, 2026 | Jun 3, 2026 |
| DEF 14A | Proxy statement | Apr 14, 2025 | May 28, 2025 |
| PRE 14A | Preliminary proxy statement | Apr 2, 2025 | May 28, 2025 |
| DEF 14A | Proxy statement | Apr 12, 2024 | Jun 4, 2024 |
| DEF 14A | Proxy statement | Jun 20, 2023 | Aug 3, 2023 |
| PRE 14A | Preliminary proxy statement | Jun 6, 2023 | — |
| DEFA14A | Additional proxy material | Apr 8, 2022 | — |
| DEF 14A | Proxy statement | Apr 8, 2022 | May 25, 2022 |
| DEFA14A | Additional proxy material | Apr 9, 2021 | — |
| DEF 14A | Proxy statement | Apr 9, 2021 | May 27, 2021 |
| DEF 14A | Proxy statement | Apr 29, 2020 | Jun 2, 2020 |
| DEFM14A | Filing | Jan 10, 2020 | — |
| PREM14A | Filing | Dec 24, 2019 | Jan 20, 2020 |
| DEFA14A | Additional proxy material | Nov 20, 2019 | — |
| DEFA14A | Additional proxy material | Nov 14, 2019 | — |
| DEF 14A | Proxy statement | Apr 25, 2019 | Jun 5, 2019 |
| DEF 14A | Proxy statement | Apr 30, 2018 | Jun 14, 2018 |
Showing 17 filings. 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.
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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.