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Ribbon Communications Inc. (RBBN)

NASDAQ / Communication Services / Telecommunications Services

Share price

1.42 USD Market dataClose of Oct 15, 2026

Market capitalisation

253.9M USD Market dataClose of Oct 15, 2026
Market data
Oct 15, 2026
Filed accounts
FY2025, filed Feb 26, 2026
Ratios computed
Oct 15, 2026
Filed years
11, FY2015 to FY2025
Four kinds of sourceSEC filingCompany statementMarket dataComputedWhat each means
SEC filingFiled with the SEC
Read from a statement the company filed with the SEC, with the form, fiscal year, filing date and accession beside it.
Company statementCompany statement
What the company says about itself in a filing: an 8-K item, the auditor, its own segment names.
Market dataMarket data
Prices, market value and what analysts publish, with the date they are as of.
ComputedComputed by ValueScreener
Worked out by us from the other three, with the inputs and the formula one press away. A score is a research output, not a rating or a recommendation.
Reading

1 of 10

Overview

What the business is, what it costs, and how it reads on four questions.

Market dataSEC filingComputed

Four questions, at a glance

Quality

Return on equity

8.8% Computed

From the FY2025 filing

Read quality

Valuation

Price to earnings

6.45x Computed

FY2025 accounts, priced at the latest close

Read valuation

Cash generation

Free cash flow yield

10.2% Computed

FY2025 accounts, priced at the latest close

Read cash generation

Revenue and net income, as filed

FY2016 Revenue: 252.6M USDFY2016 Net income: -13.9M USDFY2017 Revenue: 329.9M USDFY2017 Net income: -35.3M USDFY2018 Revenue: 577.9M USDFY2018 Net income: -76.8M USDFY2019 Revenue: 563.1M USDFY2019 Net income: -130.1M USDFY2020 Revenue: 843.8M USDFY2020 Net income: 88.6M USDFY2021 Revenue: 845.0M USDFY2021 Net income: -177.2M USDFY2022 Revenue: 819.8M USDFY2022 Net income: -98.1M USDFY2023 Revenue: 826.3M USDFY2023 Net income: -66.2M USDFY2024 Revenue: 833.9M USDFY2024 Net income: -54.2M USDFY2025 Revenue: 844.6M USDFY2025 Net income: 39.6M USD
Revenue Net income10 filed fiscal years, from the annual reports; the table in Filings names each document.
Named tests met
6 of 30 Which tests
The business, and the score behind its five axes

The reading, in brief

Is it cheap

Price to earnings is 6.45x at the close of 2026-10-15 on FY2025 figures; the lines are 15.00x (Graham's defensive ceiling) and, by market convention, 10.00x, 25.00x and 40.00x, and this sits below the lowest.

Today, against the Telecommunications Services industry (31 companies), 6.45x sits at the 17th percentile; the middle half of that group runs from 8.97x to 23.29x.

Is it good

Return on equity was 8.8% in FY2025, in the band labelled "Ordinary" (8.0% to 15.0%), on lines anchored on Damodaran's cost-of-capital data.

Today, against the Telecommunications Services industry (46 companies), 8.8% sits at the 49th percentile; the middle half of that group runs from -3.6% to 19.5%.

Is it safe

Net debt to EBITDA was 23.03x in FY2025, in the band labelled "High, covenant territory" (4.00x and above), on lines set by credit-analyst convention, suggesting debt in the range lenders write covenants around.

Year by year against peers
Whether Ribbon Communications Inc.'s return on equity stayed above the median of the Telecommunications Services industry, year by year. (FY2021 to FY2025, 5 fiscal years of Ribbon Communications Inc. with a comparable figure)
The direction
Which way Ribbon Communications Inc.'s return on equity has moved, and how steadily. (FY2016 to FY2025, 10 filed years of Ribbon Communications Inc.)
What could explain it
What in Ribbon Communications Inc.'s filed statements could explain the movements. (6 readings drawn from the statement lines Ribbon Communications Inc. filed)
What to check next
What to check next on Ribbon Communications Inc., and where in its filings. (5 questions for Ribbon Communications Inc.)
In one paragraph
One paragraph on Ribbon Communications Inc.'s returns, cash, balance sheet and price. (12 of sixteen figures read for Ribbon Communications Inc.)

These are RBBN’s filed figures. The research desk says what they mean, against peers and its own years, with what to check next.

Research RBBNPart of Serious. New accounts start with 30 days of Professional, free, no card.

2 of 10

What changed

The newest filing, what it moved, and when the next one is due.

SEC filingCompany statement

The newest accounts on file are the FY2025 annual report: 10-K, filed Feb 26, 2026, accession 0001708055-26-000012.

3 of 10

Quality

The returns the business earns on its capital, and the margins behind them.

SEC filingComputed

Ribbon Communications Inc: returns on capital and margins, each with its source
FigureValue, source and document
Return on invested capital, after tax
Why n/a

The filed income tax is outside 0 to 100% of pre-tax income (a tax benefit on a profit, a charge on a loss, or a charge above the profit), which is a one-off in the tax line and not a rate operating profit was taxed at, so after-tax operating profit is not computed.

n/a ComputedFY2025 10-K, filed Feb 26, 2026, 0001708055-26-000012
Return on equity8.8% ComputedFY2025 10-K, filed Feb 26, 2026, 0001708055-26-000012
Return on capital employed, pre-tax-0.4% ComputedFY2025 10-K, filed Feb 26, 2026, 0001708055-26-000012
Return on assets3.3% ComputedFY2025 10-K, filed Feb 26, 2026, 0001708055-26-000012
Gross margin49.8% ComputedFY2025 10-K, filed Feb 26, 2026, 0001708055-26-000012
Operating margin-0.4% ComputedFY2025 10-K, filed Feb 26, 2026, 0001708055-26-000012
Net margin4.7% ComputedFY2025 10-K, filed Feb 26, 2026, 0001708055-26-000012
RBBN 4.7%
OPTU -21.8%CXDO 7.4%RDCM 16.8%
-21.8%16.8%
Net margin: RBBN against the 3 companies named under Valuation context, each as filed for its own latest year. Placement only: no average is drawn.

4 of 10

Financial strength

What it owes against what it owns, and whether it can meet what falls due.

SEC filingComputedCompany statement

Ribbon Communications Inc: leverage, liquidity and distress, each with its source
FigureValue, source and document
Debt to equity0.90 ComputedFY2025 10-K, filed Feb 26, 2026, 0001708055-26-000012
Current ratio1.44 ComputedFY2025 10-K, filed Feb 26, 2026, 0001708055-26-000012
Quick ratio1.19 ComputedFY2025 10-K, filed Feb 26, 2026, 0001708055-26-000012
Interest coverage
Why n/a

No interest expense is filed for this year, so coverage is not computed.

n/a ComputedFY2025 10-K, filed Feb 26, 2026, 0001708055-26-000012
Altman Z-score-0.75 ComputedClose of Oct 15, 2026 · FY2025 10-K, filed Feb 26, 2026, 0001708055-26-000012
Net debt308.7M ComputedFY2025 10-K, filed Feb 26, 2026, 0001708055-26-000012
Total assets 1.21BTotal liabilities 763.3MShareholders' equity 449.0MOwnsOwes, and equity
Total assets Total liabilities Shareholders’ equity
The balance sheet, line by line

Financial health

What Ribbon Communications Inc owned and owed at the end of fiscal 2025, from the balance sheet it filed (10-K, filed Feb 26, 2026, 0001708055-26-000012).

Ribbon Communications Inc: balance sheet position
Total assets1.21B FiledFY2025 10-K, filed Feb 26, 2026
Total liabilities763.3M FiledFY2025 10-K, filed Feb 26, 2026
Shareholders' equity449.0M FiledFY2025 10-K, filed Feb 26, 2026
Cash96.4M FiledFY2025 10-K, filed Feb 26, 2026
Total debt405.1M FiledFY2025 10-K, filed Feb 26, 2026
Net debt308.7M
Current ratio1.44
Debt to equity0.90
  • Interest cover: FY2025: No interest expense is filed for this year, so coverage is not computed.

Read from the filed balance sheet for each year, with the income statement of the same year supplying operating profit where a ratio needs it. Nothing here is a view on whether this company is sound.

5 of 10

Valuation context

What the market charges for it, against its own record and companies like it.

Market dataSEC filingComputed

Ribbon Communications Inc: what the market charges, each with its source
FigureValue, source and document
Price to earnings6.45x ComputedClose of Oct 15, 2026 · FY2025 10-K, filed Feb 26, 2026, 0001708055-26-000012
P/E on trailing twelve months19.62x ComputedClose of Oct 15, 2026 · Trailing four quarters, each as known on the day; the quarterly filings are listed under Filings
Price to book0.57x ComputedClose of Oct 15, 2026 · FY2025 10-K, filed Feb 26, 2026, 0001708055-26-000012
Price to sales0.30x ComputedClose of Oct 15, 2026 · FY2025 10-K, filed Feb 26, 2026, 0001708055-26-000012
Enterprise value to EBIT
Why n/a

We do not hold this figure for this company, so there is nothing to show.

n/a ComputedClose of Oct 15, 2026 · FY2025 10-K, filed Feb 26, 2026, 0001708055-26-000012
Enterprise value to EBITDA42.08x ComputedClose of Oct 15, 2026 · FY2025 10-K, filed Feb 26, 2026, 0001708055-26-000012
Price to earnings over growth
Why n/a

We do not hold this figure for this company, so there is nothing to show.

n/a ComputedClose of Oct 15, 2026 · FY2025 10-K, filed Feb 26, 2026, 0001708055-26-000012
Diluted earnings per share0.22 USD FiledFY2025 10-K, filed Feb 26, 2026, 0001708055-26-000012
Graham number3.52 USD ComputedFY2025 10-K, filed Feb 26, 2026, 0001708055-26-000012

We publish no fair value or price target of our own. Value RBBN on your own assumptions in the DCF workbench, starting from the filed figures.

Its own record, and companies like it

Valuation

What the market charges for Ribbon Communications Inc today, and the multiples it has carried. No value of ours: the figures are the filings’ and the market’s.

Ribbon Communications Inc: valuation
Share price1.42 USD
Market capitalisation253.9M USD
Enterprise value to EBITDA42.08x
Graham number3.52 USD
Diluted earnings per share, FY20250.22 USD

Price to earnings on trailing twelve months, a different basis from the fiscal-year P/E above, since Apr 30, 2018: low 7.45x, median 15.06x, high 97.75x, latest 19.62x. 565 trading days with a meaningful ratio, 1,560 more on a loss and left out. Each close over the trailing twelve months of earnings as known that day: a quarter counts from the day it was filed.

Companies like Ribbon Communications Inc

  1. Optimum Communications, Inc. (OPTU)Market cap 261.2M USD
  2. Crexendo, Inc. (CXDO)Market cap 187.9M USD
  3. RADCOM Ltd. (RDCM)Market cap 171.4M USD

Same industry (Telecommunications Services) and size band (Micro, 50M to 300M), nearest in market value, net margin and current ratio. Each of those counts equally, by how many of the companies considered sit between the two on it. Closest first: the order is likeness and nothing else.

6 of 10

Cash generation

Whether profit arrives as cash, and what is paid back to shareholders.

SEC filingComputed

Ribbon Communications Inc: cash generation and what is paid out, each with its source
FigureValue, source and document
Free cash flow yield10.2% ComputedClose of Oct 15, 2026 · FY2025 10-K, filed Feb 26, 2026, 0001708055-26-000012
Free cash flow26.1M USD ComputedFY2025 10-K, filed Feb 26, 2026, 0001708055-26-000012
Free cash flow margin3.1% ComputedFY2025 10-K, filed Feb 26, 2026, 0001708055-26-000012
Dividend yield
Why n/a

We do not hold this figure for this company, so there is nothing to show.

n/a ComputedClose of Oct 15, 2026 · FY2025 10-K, filed Feb 26, 2026, 0001708055-26-000012
Payout ratio
Why n/a

We do not hold this figure for this company, so there is nothing to show.

n/a ComputedFY2025 10-K, filed Feb 26, 2026, 0001708055-26-000012
FY2016 Free cash flow: 14.6M USDFY2016 Net income: -13.9M USDFY2017 Free cash flow: 4.1M USDFY2017 Net income: -35.3M USDFY2018 Free cash flow: -17.5M USDFY2018 Net income: -76.8M USDFY2019 Free cash flow: 44.9M USDFY2019 Net income: -130.1M USDFY2020 Free cash flow: 74.8M USDFY2020 Net income: 88.6M USDFY2021 Free cash flow: 2.0M USDFY2021 Net income: -177.2M USDFY2022 Free cash flow: -36.6M USDFY2022 Net income: -98.1M USDFY2023 Free cash flow: 7.7M USDFY2023 Net income: -66.2M USDFY2024 Free cash flow: 27.8M USDFY2024 Net income: -54.2M USDFY2025 Free cash flow: 26.1M USDFY2025 Net income: 39.6M USD
Free cash flow Net incomeProfit that arrives as cash stands level with net income; a gap year after year is worth reading about.

7 of 10

Filings

Every figure, the year it is for and the document it was read from.

SEC filingMarket data

The filed figures

Computed from the accounts this company filed with the SEC and, in a ratio with a price in it, the last close, dated on this page. Every filed figure below carries the fiscal year and the filing date its accounts were read from, and every blank carries the reason it is blank. Nothing here is a view on this company.

Ribbon Communications Inc.: the eight ratios, with the fiscal year and filing date behind each.
FigureValueYearAs of
6.45xFY2025Oct 15, 2026
0.57xFY2025Oct 15, 2026
n/aFY2025Oct 15, 2026
n/a Operating profit is zero or negative, so there is no profit for a buyer's price to be a multiple of.
10.2%FY2025Oct 15, 2026
n/aFY2025Feb 26, 2026
n/a The filed income tax is outside 0 to 100% of pre-tax income (a tax benefit on a profit, a charge on a loss, or a charge above the profit), which is a one-off in the tax line and not a rate operating profit was taxed at, so after-tax operating profit is not computed.
n/aFY2025Oct 15, 2026
n/a The filed cash flow statement reports no dividend paid at all. That is not the same as a filed zero, and we will not read it as one.
0.90FY2025Feb 26, 2026
1.44FY2025Feb 26, 2026
0.30xFY2025Oct 15, 2026
n/aFY2025Oct 15, 2026
n/a This figure compares a year against the one before it, and we hold one filed year for this company.
-0.75FY2025Oct 15, 2026
-2.57FY2025Feb 26, 2026
6/9FY2025Feb 26, 2026

The figures are computed from the accounts for fiscal 2025, the newest full year on file. 11 filed fiscal years on record, FY2015 to FY2025, from SEC EDGAR. Prices as of Oct 15, 2026. Ratios recomputed Oct 15, 2026. Two facts, because a recompute is not a fresh quote.

The year and the filing date name the statement each figure’s accounts are read from, and they stand even where the figure itself could not be computed: the line beneath a blank says what that statement did not carry. A figure’s name opens its formula and the filings behind it; a statement that names no SEC filing has no filing date, and reads n/a.

Ten years of filed figures, year by year

Ten years of filed figures

10 filed fiscal years, FY2016 to FY2025, read from the annual reports Ribbon Communications Inc filed with the SEC. Each year names its filing. Amounts in USD, as filed.

Ribbon Communications Inc: revenue, earnings, free cash flow and returns, by fiscal year, with the filing each year was read from
YearRevenueOperating incomeNet incomeEPS, dilutedFree cash flowOperating marginReturn on equityFiling
FY2025844.6M-3.3M39.6M0.2226.1M-0.4%8.8%10-K, Feb 26, 20260001708055-26-000012
FY2024833.9M16.9M-54.2M-0.3127.8M2.0%-13.4%10-K, Feb 27, 20250001558370-25-001773
FY2023826.3M-24.3M-66.2M-0.397.7M-2.9%-14.6%10-K, Feb 28, 20240001708055-24-000003
FY2022819.8M-48.3M-98.1M-0.63-36.6M-5.9%-18.9%10-K, Mar 31, 20230001708055-23-000003
FY2021845.0M-117.8M-177.2M-1.202.0M-13.9%-33.6%10-K, Mar 11, 20220001708055-22-000003
FY2020843.8M1.7M88.6M0.6174.8M0.2%12.9%10-K, Feb 26, 20210001708055-21-000014
FY2019563.1M-189.5M-130.1M-1.1944.9M-33.6%-26.9%10-K, Feb 28, 20200001708055-20-000019
FY2018577.9M-65.4M-76.8M-0.74-17.5M-11.3%-13.0%10-K, Mar 4, 20190001708055-19-000005
FY2017329.9M-55.2M-35.3M-0.604.1M-16.7%-5.7%10-K, Mar 8, 20180001628280-18-002933
FY2016252.6M-13.6M-13.9M-0.2814.6M-5.4%-6.4%10-K, Mar 8, 20180001628280-18-002933
  • Revenue, compound annual growth FY2016 to FY2025: 14.4%
  • Earnings: Earnings was not positive in both 2016 and 2025, so a compound rate across the window is not defined. Both figures are in the table.
  • Earnings per share: Earnings per share was not positive in both 2016 and 2025, so a compound rate across the window is not defined. Both figures are in the table.
  • Free cash flow, compound annual growth FY2016 to FY2025: 6.7%

Every figure in this section is a line of a filed annual statement or a ratio of two of them. Nothing here is estimated or smoothed. Earnings per share filed before a share split are put on today's share count, and say so. Nothing here is a verdict on the company.

8 of 10

Risks and guardrails

The accounting screens, the published tests, and the lines you can set to be told.

ComputedCompany statement

Ribbon Communications Inc: accounting screens and published tests, each with its source
FigureValue, source and document
Beneish M-score-2.57 ComputedFY2025 10-K, filed Feb 26, 2026, 0001708055-26-000012
Piotroski F-score6/9 ComputedFY2025 10-K, filed Feb 26, 2026, 0001708055-26-000012
Named tests met6 of 30 Computed
Beta1.66 ComputedClose of Oct 15, 2026

The named tests

Of 30 tests value investors published: 6 met, 18 not met, 6 we could not complete. Counts, never a score: a single figure would have to decide that meeting one investor’s criteria and meeting another’s are worth the same.

Which tests, by name(all 30)
Meets
Deep value; P/E times P/B (Benjamin Graham); Low P/S, rising earnings (James O'Shaughnessy); Book or below, low debt (Walter Schloss); Cheapest quarter on P/E (David Dreman); Cheapest quarter on P/B (David Dreman)
Does not
Defensive investor (Benjamin Graham); Large cap, low P/E; High F-score, low P/B (Joseph Piotroski); Three forensic scores; Low PEG, low debt (Peter Lynch); High returns and growth; Gross margin, turnover (Robert Novy-Marx); EV/EBITDA and coverage; Dividends and buybacks; Low beta, profitable; Z-score and coverage (Edward Altman); Two thirds of NCAV (Benjamin Graham); High returns, low debt; Owner earnings yield; High return on tangibles; Tangible book or below; Clean books, high ROIC; Low P/E, growth, yield (John Neff)
Not measured
Earnings yield and ROIC (Joel Greenblatt); High yield, low payout; ROIC at or above WACC; Near the 52-week low; Cash-covered dividend; Cash-flow yield and ROIC. A test with a figure we could not read is incomplete, never met and never failed.
Figures we could not read(9)
  • EV/EBIT: We do not hold this figure for this company, so there is nothing to show.
  • Return on Invested Capital: The filed income tax is outside 0 to 100% of pre-tax income (a tax benefit on a profit, a charge on a loss, or a charge above the profit), which is a one-off in the tax line and not a rate operating profit was taxed at, so after-tax operating profit is not computed.
  • PEG Ratio: We do not hold this figure for this company, so there is nothing to show.
  • Interest Coverage: No interest expense is filed for this year, so coverage is not computed.
  • Dividend Yield: We do not hold this figure for this company, so there is nothing to show.
  • Payout Ratio: We do not hold this figure for this company, so there is nothing to show.
  • ROIC-WACC Spread: We do not hold this figure for this company, so there is nothing to show.
  • Dividend Coverage Ratio: We do not hold this figure for this company, so there is nothing to show.
  • Dividend Streak: We do not hold this figure for this company, so there is nothing to show.

9 of 10

Declared positions

Whether anybody here owns this company.

Positions declared by the founder: no holding in any company shown here, as of October 3, 2026.

10 of 10

Next step

What to do with what you have read.

A thesis is your reason for owning it, in your words, with the figures that must stay true. Checking those figures every night against the newest filed accounts, and telling you once when one breaks, is what the subscription adds.

More on this company

What this cannot tell you

  • 9 figures could not be read on this company, among them EV/EBIT, Return on Invested Capital, PEG Ratio. Each blank in the table above names the rest, with its reason. 6 named tests come back incomplete because of them, which is neither met nor missed.

And the one that is true of all of it: This is what the numbers say today. It cannot tell you the day one of them stops being true. Nothing here can, because the reasons are not written down.

Running this once is arithmetic on public documents and you are welcome to it. Writing down why you own each company, in your own words and with the numbers that have to stay true for it to hold, and then having those numbers re-checked every night against the newest filed accounts, and against the latest close where a rule watches a price, is Professional, the plan a new account starts on for 30 days, one trial per person. It writes to you the day one breaks, and stays quiet when nothing does. The check runs every night at 23:30 UTC. A filing is picked up the night after it is published.

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ValueScreener · valuescreener.ai · Computed from accounts filed with the SEC by this company, read from EDGAR, and from dated closing prices. On this page a filed figure opens into its formula, its inputs and the statement, fiscal year and filing date it was read from, and a price into the day of its close. A figure that cannot show that trail says so.

A computation on accounts filed with the SEC, not a recommendation and not advice. Past filings do not indicate future results. Risk disclaimer.

Once a week, what changed in the filings of US-listed companies, why it can matter to a thesis, and what deserves a closer review. Grounded in filings, not market noise.

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Risk disclaimer. This service is provided for research and education only. Nothing on it is investment advice, a recommendation, or an offer to buy or sell any security. Capital is at risk, and past performance does not indicate future results. Figures come from filed accounts and may be incomplete, delayed or later restated, so verify a number against the filing before you act on it.