RBBN Ribbon Communications Inc.
company
SEC Filings & Insider Trading Activity 2026

CIK: 1708055
Information Technology
Services-Computer Integrated Systems Design 47 filings
Russell 2000

Latest Ribbon Communications Inc. (RBBN) SEC EDGAR filings in 2026, including the most recent 10-K annual report filed on February 26, 2026, a 10-Q quarterly report filed on May 6, 2026, an 8-K current report filed on July 28, 2026. SignalX aggregates every new 10-K annual report, 10-Q quarterly report, 8-K current report, and Form 4 insider transaction for Ribbon Communications Inc. (RBBN) (SEC CIK 1708055), with AI-powered section-by-section summaries updated daily.

10-Q: 26
10-K: 9
8-K: 6
SC 13G: 3
SC 13D: 3

Latest 2026 SEC Filing Dates

10-K Annual Report
Feb 26, 2026
10-Q Quarterly Report
May 6, 2026
8-K Current Report
Jul 28, 2026

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Latest 2026 SEC Filings: 10-K, 10-Q, 8-K & Form 4

FormFiling DatePeriodAnalysisSEC
8-K
Jul 28, 2026---
8-K
Jun 17, 2026---
8-K
Jun 5, 2026--
10-Q
May 6, 2026Mar 31, 2026-
8-K
Apr 28, 2026---
8-K
Apr 15, 2026---
10-K
Feb 26, 2026Dec 31, 2025-
8-K
Feb 5, 2026--
10-Q
Oct 23, 2025Sep 30, 2025-
10-Q
Jul 24, 2025Jun 30, 2025-
10-Q
Apr 30, 2025Mar 31, 2025-
10-K
Feb 27, 2025Dec 31, 2024-
10-Q
Oct 24, 2024Sep 30, 2024-
10-Q
Jul 29, 2024Jun 30, 2024-
10-Q
May 15, 2024Mar 31, 2024-
10-K
Feb 28, 2024Dec 31, 2023-
SC 13G
Feb 9, 2024--
10-Q
Oct 26, 2023Sep 30, 2023-
10-Q
Jul 27, 2023Jun 30, 2023-
10-Q
Apr 28, 2023Mar 31, 2023-
10-K
Mar 31, 2023Dec 31, 2022-
SC 13G
Feb 10, 2023--
10-Q
Oct 28, 2022Sep 30, 2022-
10-Q
Jul 28, 2022Jun 30, 2022-
10-Q
May 10, 2022Mar 31, 2022-

13F Fund Holdings: Quarterly Trend

Latest: Q1 2026

Aggregate RBBN share value held by 13F filers tracked by SignalX, by quarter.

Position changes: Q4 2025 → Q1 2026
Top Buyers
Top Sellers
Closed Positions

Source: 13F-HR filings on SEC EDGAR (aggregated from 167 fund-quarter rows). Reflects only 13F filers tracked by SignalX, not the full institutional ownership universe.

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Frequently Asked Questions

What are the latest RBBN SEC filings in 2026?

Ribbon Communications Inc. (RBBN) has filed a 10-K annual report on February 26, 2026, a 10-Q quarterly report on May 6, 2026, an 8-K current report on July 28, 2026 with the SEC. SignalX tracks every new SEC EDGAR filing daily, including 10-K, 10-Q, 8-K, and Form 4 insider transactions, with AI-powered summaries of key sections.

When did RBBN file its most recent 10-K annual report?

Ribbon Communications Inc. (RBBN) filed its most recent 10-K annual report on February 26, 2026. The 10-K includes audited financial statements, business overview, risk factors, and management discussion, all available on SignalX with AI-generated summaries and XBRL financial data.

How do I view RBBN 10-Q quarterly reports?

Ribbon Communications Inc. (RBBN)'s most recent 10-Q quarterly report was filed on May 6, 2026. SignalX displays every RBBN 10-Q with AI-generated summaries of the MD&A (Management Discussion & Analysis) and Risk Factors sections, plus links to the original SEC EDGAR document.

What 8-K current reports has RBBN filed recently?

Ribbon Communications Inc. (RBBN)'s most recent 8-K was filed on July 28, 2026. 8-K filings disclose material corporate events such as earnings releases, executive changes, mergers, and other significant developments. SignalX surfaces each 8-K with item-level summaries so you can quickly see what happened.

Where can I find RBBN insider trading activity (Form 4)?

SignalX aggregates every RBBN Form 4 insider transaction from SEC EDGAR. Form 4 reports show when officers, directors, and 10% shareholders buy or sell company stock, with transaction code, share count, and price per share.

How often does RBBN file with the SEC?

Ribbon Communications Inc. (RBBN) files a 10-K annual report once per year (typically within 60 days of fiscal year-end) and 10-Q quarterly reports three times per year. 8-K current reports are filed as needed when material events occur, and Form 4 insider transaction reports are due within two business days of a trade. SignalX monitors SEC EDGAR daily to surface every new RBBN filing with AI-powered analysis.

What is the difference between 10-K, 10-Q, and 8-K SEC filings?

A 10-K is a comprehensive annual report with audited financials, business overview, and risk factors. A 10-Q is a shorter quarterly report with unaudited financials and management discussion. An 8-K is a current report filed when a material event occurs, such as earnings releases, executive changes, acquisitions, or other significant developments. SignalX provides AI-generated summaries for all three filing types for Ribbon Communications Inc. (RBBN).

What is RBBN's SEC CIK number?

Ribbon Communications Inc. (RBBN)'s SEC CIK (Central Index Key) number is 1708055. The CIK is a unique identifier assigned by the SEC to every filing entity. You can use CIK 1708055 to look up all RBBN filings on SEC EDGAR, or browse them here on SignalX with AI-powered analysis.

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Insider trading data, fund holdings, cross-signal detection, and AI-powered analysis for 47+ filings.