What SEC filings does Ribbon Communications Inc. submit to the SEC?

Ribbon Communications Inc. (RBBN) submits several types of SEC filings including Form 4 (insider transactions), Form 144 (proposed insider sales), 8-K reports (material events such as earnings releases, acquisitions, leadership changes), and periodic reports — the 10-Q (quarterly) and 10-K (annual). All filings are publicly available through SEC EDGAR.

What does a Form 4 filing tell me about RBBN?

A Form 4 for RBBN discloses a transaction by a company insider — typically a director, officer, or 10%+ shareholder. It shows the source-reported date, number of shares, price, and updated ownership. These facts do not establish motive or predict future returns.

How do I interpret an 8-K filing from Ribbon Communications Inc.?

An 8-K signals a material event requiring prompt disclosure. Common triggers include earnings pre-announcements, acquisitions, leadership appointments or departures, credit changes, or regulatory actions. Read the item codes inside the filing to understand exactly what was disclosed before drawing conclusions.

What is the difference between a 10-K and 10-Q for RBBN?

The 10-K is Ribbon Communications Inc.'s annual report with fully audited financial statements, comprehensive MD&A, and complete risk factor disclosures — filed 60–90 days after fiscal year-end. The 10-Q is a lighter quarterly report with unaudited financials filed for the first three quarters. Together they provide a continuous financial picture of the company.

Where can I see all RBBN SEC filings directly on EDGAR?

You can view all historical Ribbon Communications Inc. filings on the SEC EDGAR company page for RBBN. Each filing card on this page links directly to the original SEC document.

How often does Ribbon Communications Inc. file with the SEC?

Ribbon Communications Inc. files one 10-K per year and up to three 10-Qs per year. Form 4 insider transactions must be reported within two business days of each trade, so the frequency depends on how often insiders are buying or selling RBBN shares. 8-K filings occur whenever a material event happens — which can be several times per quarter for an active company.

RBBN SEC Filing News — Ribbon Communications Inc.

Latest SEC filings for Ribbon Communications Inc. (RBBN) explained in plain English. Covers insider buying and selling (Form 4), proposed insider sales (Form 144), material company events (8-K), and quarterly & annual reports (10-Q / 10-K). StrongBuyAnalytics provides navigation and brief excerpts or summaries; original filings remain at the SEC/source links and were authored by their filers, not StrongBuyAnalytics. Filing dates shown are source dates. Coverage and detection can be delayed or incomplete because of SEC availability, amendments, parsing, caching, or outages. Latest source filing date shown: 2026-07-31.

Ribbon Communications Inc. provides communications technology in the United States, Europe, the Middle East, Africa, the Asia Pacific, and internationally. It operates through two segments, Cloud and Edge, and IP Optical Networks. The Cloud and Edge segment provides software and hardware products, solutions, and services for voice over internet protocol communications, voice over long-term evolution, and voice over 5G communications, and unified communications and collaboration. It also offers s…

Sector: Technology Industry: Software - Application Market Cap: $236.0M CIK: 1708055

Total Filings

Bullish Classifications

Bearish Classifications

Insider Transactions

Material Events (8-K)

Periodic Reports

What you're looking at: Each item below is parsed from an actual SEC filing submitted by Ribbon Communications Inc.. Form 4 = confirmed insider transaction · Form 144 = proposed sale notice · 8-K = material event (earnings, M&A, leadership change, etc.) · 10-Q / 10-K = quarterly / annual report.

RBBN Filing Activity Snapshot 2026-04-15 — 2026-07-31

Insider Transactions (Form 4)

0 buys vs 0 sells

Insider buying and selling activity is balanced in this period.

Insider Transactions 13 · Forms 3, 4 and 5

A Form 4 is filed within two business days of a company insider — an officer, a director, or a holder of more than ten percent of the stock — changing their position in the shares. All 13 filings in this group are Form 4s for Ribbon Communications Inc.

The difficulty with reading these filings as a group is that a single form type covers transactions that mean entirely different things. An executive spending their own money to buy stock and an executive having shares withheld to pay tax on a vesting grant both appear as a Form 4. Every filing below is therefore tagged with the nature of the underlying transaction, taken from the transaction code reported on the form itself.

Across the 13 insider filings shown, the breakdown is 13 compensation award. None of the classified filings involved a discretionary open-market trade, so this period says nothing about what insiders think of the price.

What each transaction type means

Compensation award ×13: Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Form 4 Compensation award Tax / Compensation Filing 2026-07-15

RBBN insider Form 4 filed for equity award, exercise, or tax withholding

GRAYSON BRUNS H (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award	14,423	—	—

Filing: Form 4 (Insider Transaction) Insider: GRAYSON BRUNS H (Director) Shares: 14,423

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-07-15

RBBN insider Form 4 filed for equity award, exercise, or tax withholding

SHANI SHAUL (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award	11,752	—	—

Filing: Form 4 (Insider Transaction) Insider: SHANI SHAUL (Director) Shares: 11,752

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-06-17

RBBN insider Form 4 filed for equity award, exercise, or tax withholding

Bucci Sam (EVP, Chief Operating Officer) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award derivative · Restructed Stock Unites (RSUs)	250,000	—	—
`A`	Compensation award derivative · Performance-Based RSUs (PSUs)	150,000	—	—
`A`	Compensation award derivative · PSUs	100,000	—	—

Filing: Form 4 (Insider Transaction) Insider: Bucci Sam (EVP, Chief Operating Officer)

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-06-17

RBBN insider Form 4 filed for equity award, exercise, or tax withholding

McCaffery Stephen J. (EVP, Global Sales) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award derivative · Restructed Stock Unites (RSUs)	200,000	—	—
`A`	Compensation award derivative · Performance-Based RSUs (PSUs)	120,000	—	—
`A`	Compensation award derivative · PSUs	80,000	—	—

Filing: Form 4 (Insider Transaction) Insider: McCaffery Stephen J. (EVP, Global Sales)

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-06-17

RBBN insider Form 4 filed for equity award, exercise, or tax withholding

Marmurek Eric S (EVP, Chief Financial Officer) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award derivative · Restructed Stock Unites (RSUs)	150,000	—	—
`A`	Compensation award derivative · Performance-Based RSUs (PSUs)	90,000	—	—
`A`	Compensation award derivative · PSUs	60,000	—	—

Filing: Form 4 (Insider Transaction) Insider: Marmurek Eric S (EVP, Chief Financial Officer)

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-06-17

RBBN insider Form 4 filed for equity award, exercise, or tax withholding

Macken Patrick W (EVP, Chief Legal Officer) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award derivative · Restructed Stock Unites (RSUs)	162,500	—	—
`A`	Compensation award derivative · Performance-Based RSUs (PSUs)	97,500	—	—
`A`	Compensation award derivative · PSUs	65,000	—	—

Filing: Form 4 (Insider Transaction) Insider: Macken Patrick W (EVP, Chief Legal Officer)

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-06-17

RBBN insider Form 4 filed for equity award, exercise, or tax withholding

Tamone Tanya (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`M`	Option exercise	42,500	—	—
`A`	Compensation award derivative · Restricted Stock Units (RSUs)	63,197	—	—
`M`	Option exercise derivative · RSUs	42,500	—	—

Filing: Form 4 (Insider Transaction) Insider: Tamone Tanya (Director) Shares: 42,500

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-06-17

RBBN insider Form 4 filed for equity award, exercise, or tax withholding

SILVER LOUIS (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`A`	Compensation award derivative · Restricted Stock Units (RSUs)	63,197	—	—

Filing: Form 4 (Insider Transaction) Insider: SILVER LOUIS (Director)

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-06-17

RBBN insider Form 4 filed for equity award, exercise, or tax withholding

Mair Scott (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`M`	Option exercise	67,500	—	—
`A`	Compensation award derivative · Restricted Stock Units (RSUs)	63,197	—	—
`M`	Option exercise derivative · RSUs	67,500	—	—

Filing: Form 4 (Insider Transaction) Insider: Mair Scott (Director) Shares: 67,500

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-06-17

RBBN insider Form 4 filed for equity award, exercise, or tax withholding

SHANI SHAUL (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`M`	Option exercise	42,500	—	—
`A`	Compensation award derivative · Restricted Stock Units (RSUs)	63,197	—	—
`M`	Option exercise derivative · RSUs	42,500	—	—

Filing: Form 4 (Insider Transaction) Insider: SHANI SHAUL (Director) Shares: 42,500

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-06-17

RBBN insider Form 4 filed for equity award, exercise, or tax withholding

INFANTE BEATRIZ V (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`M`	Option exercise	42,500	—	—
`A`	Compensation award derivative · Restricted Stock Units (RSUs)	63,197	—	—
`M`	Option exercise derivative · RSUs	42,500	—	—

Filing: Form 4 (Insider Transaction) Insider: INFANTE BEATRIZ V (Director) Shares: 42,500

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-06-17

RBBN insider Form 4 filed for equity award, exercise, or tax withholding

GRAYSON BRUNS H (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`M`	Option exercise	42,500	—	—
`A`	Compensation award derivative · Restricted Stock Units (RSUs)	63,197	—	—
`M`	Option exercise derivative · RSUs	42,500	—	—

Filing: Form 4 (Insider Transaction) Insider: GRAYSON BRUNS H (Director) Shares: 42,500

View on SEC EDGAR → Open Filing Document →

Form 4 Compensation award Tax / Compensation Filing 2026-06-17

RBBN insider Form 4 filed for equity award, exercise, or tax withholding

EWING R STEWART JR (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`M`	Option exercise	42,500	—	—
`A`	Compensation award derivative · Restricted Stock Units (RSUs)	63,197	—	—
`M`	Option exercise derivative · RSUs	42,500	—	—

Filing: Form 4 (Insider Transaction) Insider: EWING R STEWART JR (Director) Shares: 42,500

View on SEC EDGAR → Open Filing Document →

Material Events 5 · Form 8-K

An 8-K reports a material event in the window between scheduled reports. There are 5 in this period for Ribbon Communications Inc. Each 8-K names the item number it is filed under, and that number is the fastest way to tell a routine disclosure from a consequential one.

Item 2.02 is an earnings release, Item 5.02 is a change of directors or officers, and Item 1.01 or 2.01 covers a material agreement or a completed acquisition. Item 7.01 and Item 8.01 are the general-purpose disclosure items and carry no fixed meaning on their own.

Form 8-K Material Company Update 2026-07-28

RBBN filed 8-K — material company event

Ribbon Communications Inc. filed an 8-K with the SEC reporting a material event. Read the SEC filing for the full details.

Filing: 8-K (Material Event)

View on SEC EDGAR → Open Filing Document →

Form 8-K Material Company Update 2026-06-17

RBBN filed 8-K — material company event

Ribbon Communications Inc. filed an 8-K with the SEC reporting a material event. Read the SEC filing for the full details.

Filing: 8-K (Material Event)

View on SEC EDGAR → Open Filing Document →

Form 8-K Material Company Update 2026-06-05

RBBN filed 8-K — material company event

Ribbon Communications Inc. filed an 8-K with the SEC reporting a material event. Read the SEC filing for the full details.

Filing: 8-K (Material Event)

View on SEC EDGAR → Open Filing Document →

Form 8-K Material Company Update 2026-04-28

RBBN filed 8-K — material company event

Ribbon Communications Inc. filed an 8-K with the SEC reporting a material event. Read the SEC filing for the full details.

Filing: 8-K (Material Event)

View on SEC EDGAR → Open Filing Document →

Form 8-K Material Company Update 2026-04-15

RBBN filed 8-K — material company event

Ribbon Communications Inc. filed an 8-K with the SEC reporting a material event. Read the SEC filing for the full details.

Filing: 8-K (Material Event)

View on SEC EDGAR → Open Filing Document →

Periodic Reports 2 · Forms 10-K and 10-Q

The periodic reports are where the audited and reviewed financial statements live. This period contains 2 quarterly reports (10-Q) for Ribbon Communications Inc.

The two are not equivalent in weight. A 10-K is audited by an external firm and includes the full risk factor disclosure, business description and management discussion; a 10-Q is unaudited, reviewed rather than examined, and much shorter. When a figure in a quarterly report is later revised, the annual report is usually where the correction appears.

An amended report — 10-K/A or 10-Q/A — restates or corrects something in the original filing, and is worth reading against the version it replaces.

Form 10-Q Quarterly Report 2026-07-31

RBBN filed Quarterly Report (10-Q)

Ribbon Communications Inc. filed its quarterly report with the SEC. This report includes unaudited financial statements and management discussion for the quarter.

Filing: 10-Q (Quarterly Report)

View on SEC EDGAR → Open Filing Document →

Form 10-Q Quarterly Report 2026-05-06

RBBN filed Quarterly Report (10-Q)

Ribbon Communications Inc. filed its quarterly report with the SEC. This report includes unaudited financial statements and management discussion for the quarter.

Filing: 10-Q (Quarterly Report)

View on SEC EDGAR → Open Filing Document →

How we classify Ribbon Communications Inc.'s filings

Straight from EDGAR

Each displayed record links to an original source document. StrongBuyAnalytics provides navigation and brief excerpts or summaries, not the filing itself. Parsing may omit context or contain errors, so read the original document in full.

Transaction codes, not guesswork

The nature shown on each insider filing comes from the transaction code the filer entered on the form itself — P for an open-market purchase, A for a compensation award, F for shares withheld to pay tax, M for an option exercise. Where one filing contains several codes, the transaction table lists them line by line.

Why the distinction matters

Insider activity is routinely summarised as buying or selling, which flattens together decisions that mean very different things. Shares withheld for tax on a vesting grant are an automatic administrative step; shares bought on the open market are someone committing their own money at the current price.

What this page does not tell you

A filing records what happened, not why. Form 4 does not always disclose whether a sale was executed under a pre-arranged Rule 10b5-1 plan, and no single filing is a basis for a decision on RBBN. Read these alongside the fundamentals rather than in isolation.

Frequently Asked Questions — RBBN SEC Filings

More Tools for RBBN

RBBN Full Stock Analysis RBBN Live Chart Institutional Ownership Earnings Calendar Options Flow Scanner Semiconductor Demand Zone Tracker Sector Scanner Browse All Stocks

Want deeper RBBN analysis?

View valuation, growth metrics, the rule-based stock-page score, demand zones, peer comparison, and more — all on the RBBN stock analysis page.

RBBN Full Analysis

Publisher, sources & limitations — September 15, 2026. StrongBuyAnalytics provides navigation and brief excerpts or summaries for educational use. Original filings remain at SEC EDGAR or other displayed source links; StrongBuyAnalytics does not author them. Filing dates are source dates, not publication dates for this page. Coverage can be delayed, incomplete, amended, or unavailable because of SEC/source availability, parsing, caching, or outages. Verify every material statement in the original filing.

Data Sources · Methodology · AI Disclosure · Corrections Policy · Disclaimer