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 |
|---|---|---|---|
| S-8 | Employee stock plan registration | Dec 10, 2025 | — |
| S-8 | Employee stock plan registration | Jul 2, 2025 | — |
| S-8 | Employee stock plan registration | Oct 28, 2024 | — |
| S-3/A | Form s-3/a | May 17, 2023 | — |
| S-3 | Shelf registration | Apr 4, 2023 | — |
| S-3 | Shelf registration | Sep 14, 2022 | — |
| S-8 | Employee stock plan registration | Jul 29, 2022 | — |
| S-8 | Employee stock plan registration | Jun 2, 2020 | — |
| S-8 | Employee stock plan registration | Mar 16, 2020 | — |
| S-8 | Employee stock plan registration | Aug 1, 2019 | — |
| S-8 | Employee stock plan registration | Aug 6, 2018 | — |
| S-8 | Employee stock plan registration | Oct 31, 2017 | — |
| 424B3 | Prospectus | Sep 22, 2017 | — |
| S-4/A | Filing | Sep 20, 2017 | — |
| S-4/A | Filing | Sep 11, 2017 | — |
| S-4/A | Filing | Aug 23, 2017 | — |
| S-4 | Registration for a merger or exchange | Jun 28, 2017 | — |
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.
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)
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.