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 |
|---|---|---|---|
| 10-Q | Quarterly report | Oct 28, 2026 | Sep 30, 2026 |
| 8-K |
Current report
Results of operations
|
Oct 27, 2026 | Oct 27, 2026 |
| 10-Q | Quarterly report | Jul 31, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations
|
Jul 28, 2026 | Jul 28, 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 | — |
| 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 |
| ARS | Annual report to shareholders | Apr 17, 2026 | Dec 31, 2025 |
| DEF 14A | Proxy statement | Apr 17, 2026 | Jun 3, 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 |
| 8-K |
Current report
Results of operations
|
Feb 5, 2026 | Feb 5, 2026 |
| S-8 | Employee stock plan registration | Dec 10, 2025 | — |
| 10-Q | Quarterly report | Oct 23, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations
|
Oct 22, 2025 | Oct 22, 2025 |
| 8-K |
Current report
Officer or director change
|
Aug 29, 2025 | Aug 29, 2025 |
| 10-Q | Quarterly report | Jul 24, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations
|
Jul 23, 2025 | Jul 23, 2025 |
| S-8 | Employee stock plan registration | Jul 2, 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 | — |
| 10-Q | Quarterly report | Apr 30, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations
|
Apr 29, 2025 | Apr 29, 2025 |
| ARS | Annual report to shareholders | Apr 14, 2025 | Dec 31, 2024 |
| DEF 14A | Proxy statement | Apr 14, 2025 | May 28, 2025 |
| PRE 14A | Preliminary proxy statement | Apr 2, 2025 | May 28, 2025 |
| 10-K | Annual report | Feb 27, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Results of operations
|
Feb 12, 2025 | Feb 12, 2025 |
| 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 |
| 8-K |
Current report
Officer or director change
|
Oct 4, 2024 | Oct 3, 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 |
| 8-K |
Current report
Material agreement, Agreement ended, New debt, Other events
|
Jun 24, 2024 | Jun 21, 2024 |
| 8-K |
Current report
Shareholder vote results
|
Jun 6, 2024 | Jun 4, 2024 |
| SD | Specialized disclosure (conflict minerals) | May 31, 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 |
| DEF 14A | Proxy statement | Apr 12, 2024 | Jun 4, 2024 |
| 8-K |
Current report
Other events
|
Mar 13, 2024 | Mar 13, 2024 |
| 10-K | Annual report | Feb 28, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Results of operations
|
Feb 14, 2024 | Feb 14, 2024 |
| 10-Q | Quarterly report | Oct 26, 2023 | Sep 30, 2023 |
| 8-K |
Current report
Results of operations
|
Oct 25, 2023 | Oct 25, 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 |
| DEF 14A | Proxy statement | Jun 20, 2023 | Aug 3, 2023 |
| PRE 14A | Preliminary proxy statement | Jun 6, 2023 | — |
| SD | Specialized disclosure (conflict minerals) | May 31, 2023 | — |
| 8-K |
Current report
Officer or director change
|
May 26, 2023 | May 23, 2023 |
| EFFECT | Filing | May 19, 2023 | — |
| CORRESP | Letter to the SEC | May 18, 2023 | — |
| S-3/A | Form s-3/a | May 17, 2023 | — |
| CORRESP | Letter to the SEC | May 9, 2023 | — |
| CORRESP | Letter to the SEC | May 8, 2023 | — |
| 10-Q | Quarterly report | Apr 28, 2023 | Mar 31, 2023 |
| 10-K/A | Amended annual report | Apr 28, 2023 | Dec 31, 2022 |
| 8-K |
Current report
Results of operations
|
Apr 26, 2023 | Apr 26, 2023 |
| UPLOAD | Letter from the SEC | Apr 5, 2023 | — |
| S-3 | Shelf registration | Apr 4, 2023 | — |
| 10-K | Annual report | Mar 31, 2023 | Dec 31, 2022 |
| 8-K |
Current report
Material agreement, New debt, Unregistered share sale, Bylaw or fiscal year change, Regulation FD disclosure
|
Mar 30, 2023 | Mar 24, 2023 |
| 8-K |
Current report
Regulation FD disclosure
|
Mar 27, 2023 | Mar 24, 2023 |
| NT 10-K | Filing | Mar 16, 2023 | Dec 31, 2022 |
| 8-K |
Current report
Regulation FD disclosure
|
Mar 13, 2023 | Mar 13, 2023 |
| 8-K |
Current report
Results of operations
|
Feb 15, 2023 | Feb 15, 2023 |
| 8-K |
Current report
Officer or director change
|
Jan 13, 2023 | Jan 9, 2023 |
| 10-Q | Quarterly report | Oct 28, 2022 | Sep 30, 2022 |
| 8-K |
Current report
Results of operations
|
Oct 26, 2022 | Oct 26, 2022 |
| EFFECT | Filing | Sep 23, 2022 | — |
| CORRESP | Letter to the SEC | Sep 21, 2022 | — |
| UPLOAD | Letter from the SEC | Sep 21, 2022 | — |
| S-3 | Shelf registration | Sep 14, 2022 | — |
| 8-K |
Current report
Officer or director change
|
Sep 8, 2022 | Sep 7, 2022 |
| D | Filing | Aug 25, 2022 | — |
| 8-K |
Current report
Material agreement, Unregistered share sale, Other events
|
Aug 16, 2022 | Aug 12, 2022 |
| S-8 | Employee stock plan registration | Jul 29, 2022 | — |
| 10-Q | Quarterly report | Jul 28, 2022 | Jun 30, 2022 |
| 8-K |
Current report
Results of operations
|
Jul 27, 2022 | Jul 27, 2022 |
| 8-K |
Current report
Material agreement
|
Jul 5, 2022 | Jun 30, 2022 |
| SD | Specialized disclosure (conflict minerals) | May 31, 2022 | — |
| 8-K |
Current report
Shareholder vote results
|
May 27, 2022 | May 25, 2022 |
| 10-Q | Quarterly report | May 10, 2022 | Mar 31, 2022 |
| 8-K |
Current report
Results of operations
|
Apr 27, 2022 | Apr 27, 2022 |
| DEFA14A | Additional proxy material | Apr 8, 2022 | — |
| DEF 14A | Proxy statement | Apr 8, 2022 | May 25, 2022 |
| 8-K |
Current report
Officer or director change
|
Apr 1, 2022 | Mar 30, 2022 |
| 10-K | Annual report | Mar 11, 2022 | Dec 31, 2021 |
| 8-K |
Current report
Results of operations, Exit or restructuring costs
|
Feb 16, 2022 | Feb 14, 2022 |
| 8-K |
Current report
Results of operations
|
Jan 20, 2022 | Jan 20, 2022 |
| UPLOAD | Letter from the SEC | Jan 11, 2022 | — |
| CORRESP | Letter to the SEC | Jan 7, 2022 | — |
| CORRESP | Letter to the SEC | Dec 29, 2021 | — |
| UPLOAD | Letter from the SEC | Dec 17, 2021 | — |
| CORRESP | Letter to the SEC | Dec 14, 2021 | — |
| UPLOAD | Letter from the SEC | Nov 30, 2021 | — |
| 10-Q | Quarterly report | Oct 28, 2021 | Sep 30, 2021 |
| 8-K |
Current report
Results of operations
|
Oct 27, 2021 | Oct 27, 2021 |
| 10-Q | Quarterly report | Jul 29, 2021 | Jun 30, 2021 |
| 8-K |
Current report
Results of operations
|
Jul 28, 2021 | Jul 28, 2021 |
| 8-K |
Current report
Shareholder vote results
|
Jun 1, 2021 | May 27, 2021 |
| SD | Specialized disclosure (conflict minerals) | Jun 1, 2021 | — |
| 10-Q | Quarterly report | Apr 30, 2021 | Mar 31, 2021 |
| 8-K |
Current report
Results of operations
|
Apr 28, 2021 | Apr 28, 2021 |
| DEFA14A | Additional proxy material | Apr 9, 2021 | — |
| DEF 14A | Proxy statement | Apr 9, 2021 | May 27, 2021 |
| 8-K |
Current report
Officer or director change
|
Apr 2, 2021 | Mar 31, 2021 |
| 8-K |
Current report
Material agreement, New debt
|
Mar 4, 2021 | Mar 3, 2021 |
| 10-K | Annual report | Feb 26, 2021 | Dec 31, 2020 |
| 8-K |
Current report
Results of operations
|
Feb 17, 2021 | Feb 17, 2021 |
| 8-K |
Current report
Results of operations
|
Jan 25, 2021 | Jan 25, 2021 |
| 8-K |
Current report
Material agreement
|
Dec 7, 2020 | Dec 1, 2020 |
| 8-K/A |
Amended current report
Officer or director change
|
Oct 30, 2020 | Oct 26, 2020 |
| 10-Q | Quarterly report | Oct 30, 2020 | Sep 30, 2020 |
| 8-K |
Current report
Officer or director change
|
Oct 30, 2020 | Oct 27, 2020 |
| 8-K |
Current report
Results of operations
|
Oct 29, 2020 | Oct 29, 2020 |
| 8-K |
Current report
Material agreement, New debt
|
Aug 24, 2020 | Aug 18, 2020 |
| 8-K |
Current report
Material agreement, Regulation FD disclosure
|
Aug 7, 2020 | Aug 5, 2020 |
| 10-Q | Quarterly report | Aug 6, 2020 | Jun 30, 2020 |
| 8-K |
Current report
Results of operations
|
Aug 5, 2020 | Aug 5, 2020 |
| 8-K |
Current report
Officer or director change, Other events
|
Jun 23, 2020 | Jun 18, 2020 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Jun 3, 2020 | Jun 2, 2020 |
| S-8 | Employee stock plan registration | Jun 2, 2020 | — |
| SD | Specialized disclosure (conflict minerals) | May 29, 2020 | — |
| 8-K |
Current report
Officer or director change
|
May 11, 2020 | May 6, 2020 |
| 10-Q | Quarterly report | May 8, 2020 | Mar 31, 2020 |
| 8-K |
Current report
Results of operations
|
May 6, 2020 | May 6, 2020 |
| DEF 14A | Proxy statement | Apr 29, 2020 | Jun 2, 2020 |
| 8-K/A | Amended current report | Apr 13, 2020 | Mar 3, 2020 |
| S-8 | Employee stock plan registration | Mar 16, 2020 | — |
| 8-K |
Current report
Material agreement, New debt
|
Mar 4, 2020 | Mar 3, 2020 |
| 8-K |
Current report
Material agreement, Acquisition or sale of assets, Other events
|
Mar 3, 2020 | Mar 3, 2020 |
| 10-K | Annual report | Feb 28, 2020 | Dec 31, 2019 |
| 8-K |
Current report
Officer or director change
|
Feb 19, 2020 | Feb 17, 2020 |
| 8-K |
Current report
Results of operations
|
Feb 19, 2020 | Feb 19, 2020 |
| 8-K |
Current report
Officer or director change
|
Jan 30, 2020 | Jan 29, 2020 |
| 8-K |
Current report
Shareholder vote results
|
Jan 28, 2020 | Jan 27, 2019 |
| DEFM14A | Filing | Jan 10, 2020 | — |
| 8-K |
Current report
Officer or director change
|
Jan 2, 2020 | Dec 27, 2019 |
| PREM14A | Filing | Dec 24, 2019 | Jan 20, 2020 |
| 8-K |
Current report
Other events
|
Nov 20, 2019 | Nov 20, 2019 |
| DEFA14A | Additional proxy material | Nov 20, 2019 | — |
| 8-K |
Current report
Material agreement, Unregistered share sale, Other events
|
Nov 14, 2019 | Nov 14, 2019 |
| DEFA14A | Additional proxy material | Nov 14, 2019 | — |
| 8-K |
Current report
Officer or director change
|
Nov 14, 2019 | Nov 13, 2019 |
| 10-Q | Quarterly report | Oct 31, 2019 | Sep 30, 2019 |
| 8-K |
Current report
Results of operations
|
Oct 30, 2019 | Oct 30, 2019 |
| S-8 | Employee stock plan registration | Aug 1, 2019 | — |
| 10-Q | Quarterly report | Aug 1, 2019 | Jun 30, 2019 |
| 8-K |
Current report
Results of operations
|
Jul 31, 2019 | Jul 31, 2019 |
| UPLOAD | Letter from the SEC | Jun 28, 2019 | — |
| CORRESP | Letter to the SEC | Jun 26, 2019 | — |
| UPLOAD | Letter from the SEC | Jun 14, 2019 | — |
| 8-K |
Current report
Exit or restructuring costs, Officer or director change, Shareholder vote results, Regulation FD disclosure
|
Jun 11, 2019 | Jun 5, 2019 |
| SD | Specialized disclosure (conflict minerals) | May 30, 2019 | — |
| CORRESP | Letter to the SEC | May 21, 2019 | — |
| CORRESP | Letter to the SEC | May 13, 2019 | — |
| 8-K |
Current report
Results of operations
|
May 6, 2019 | May 2, 2019 |
| 10-Q | Quarterly report | May 2, 2019 | Mar 31, 2019 |
| 8-K |
Current report
Material agreement, Results of operations, New debt
|
May 2, 2019 | Apr 29, 2019 |
| UPLOAD | Letter from the SEC | Apr 30, 2019 | — |
| DEF 14A | Proxy statement | Apr 25, 2019 | Jun 5, 2019 |
| 8-K |
Current report
Other events
|
Apr 25, 2019 | Apr 22, 2019 |
| 10-K/A | Amended annual report | Mar 5, 2019 | Dec 31, 2018 |
| 10-K | Annual report | Mar 4, 2019 | Dec 31, 2018 |
| 8-K |
Current report
Results of operations
|
Feb 20, 2019 | Feb 20, 2019 |
| 8-K |
Current report
Unregistered share sale, Other events
|
Feb 4, 2019 | Jan 31, 2019 |
| 8-K |
Current report
Results of operations, Officer or director change, Other events
|
Jan 14, 2019 | Jan 13, 2019 |
| 8-K |
Current report
Officer or director change
|
Dec 17, 2018 | Dec 17, 2018 |
| 10-Q | Quarterly report | Oct 31, 2018 | Sep 30, 2018 |
| 8-K |
Current report
Results of operations
|
Oct 30, 2018 | Oct 30, 2018 |
| 8-K |
Current report
Regulation FD disclosure
|
Aug 23, 2018 | Aug 23, 2018 |
| 8-K |
Current report
New debt, Unregistered share sale, Other events
|
Aug 9, 2018 | Aug 3, 2018 |
| S-8 | Employee stock plan registration | Aug 6, 2018 | — |
| 10-Q | Quarterly report | Aug 1, 2018 | Jun 30, 2018 |
| 8-K |
Current report
Results of operations
|
Jul 31, 2018 | Jul 31, 2018 |
| 8-K |
Current report
Material agreement, New debt
|
Jun 28, 2018 | Jun 24, 2018 |
| 8-K |
Current report
Shareholder vote results
|
Jun 15, 2018 | Jun 14, 2018 |
| SD | Specialized disclosure (conflict minerals) | May 31, 2018 | — |
| 10-Q | Quarterly report | Apr 30, 2018 | Mar 31, 2018 |
| DEF 14A | Proxy statement | Apr 30, 2018 | Jun 14, 2018 |
| 8-K/A |
Amended current report
Officer or director change
|
Apr 26, 2018 | Dec 13, 2017 |
| 8-K |
Current report
Regulation FD disclosure
|
Apr 26, 2018 | Apr 26, 2018 |
| 8-K |
Current report
Results of operations
|
Apr 26, 2018 | Apr 26, 2018 |
| 10-K | Annual report | Mar 8, 2018 | Dec 31, 2017 |
| 8-K |
Current report
Results of operations
|
Mar 1, 2018 | Mar 1, 2018 |
| 8-K |
Current report
Material agreement, Agreement ended, New debt
|
Dec 26, 2017 | Dec 21, 2017 |
| 8-K/A | Amended current report | Dec 20, 2017 | Oct 27, 2017 |
| 8-K |
Current report
Officer or director change
|
Dec 14, 2017 | Dec 13, 2017 |
| 8-K |
Current report
Bylaw or fiscal year change, Other events
|
Nov 28, 2017 | Nov 28, 2017 |
| 8-K |
Current report
Regulation FD disclosure
|
Nov 7, 2017 | Nov 7, 2017 |
| 8-K |
Current report
Officer or director change
|
Oct 31, 2017 | Oct 31, 2017 |
| S-8 | Employee stock plan registration | Oct 31, 2017 | — |
| 8-K12B | Filing | Oct 30, 2017 | Oct 27, 2017 |
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.