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Stocks · Technology · Services-Computer Integrated Systems Design

Ribbon Communications Inc.

RBBN Clue Score50
United States Fiscal year ends December CIK 0001708055
$1.70 -1.16% Close, 9 Oct 2026
Alert on the numbers Alert on insider trades
Price $1.70 −71.95% Close, 9 Oct 2026

Closing prices at the end of each trading day, from 29 Nov 2017. Not a live quote. Adjusted for share splits, so the line has no step at a split; dividends are not added back. P/E and P/FCF are the market value over the last full fiscal year's net income or free cash flow, as public on each day, so they step once a year when the annual report comes out. A hatched band marks a stretch with none: a year of net loss, or of cash burnt.

Revenue and profit

What the business sells, and what is left of it. Point at a year for the detail.
RevenueOperating incomeNet income
Fiscal year 2016Revenue252.6Operating income−13.6EPS, diluted−0.28Fiscal year 2017Revenue329.9 +30.6%Operating income−55.2EPS, diluted−0.60Fiscal year 2018Revenue577.9 +75.2%Operating income−65.4Net income−76.8EPS, diluted−0.74Fiscal year 2019Revenue563.1 −2.6%Operating income−189.5Net income−130.1EPS, diluted−1.19Fiscal year 2020Revenue843.8 +49.8%Operating income1.7Net income88.6EPS, diluted0.61Fiscal year 2021Revenue845.0 +0.1%Operating income−117.8Net income−177.2 −300.0%EPS, diluted−1.20Fiscal year 2022Revenue819.8 −3.0%Operating income−48.3Net income−98.1EPS, diluted−0.63Fiscal year 2023Revenue826.3 +0.8%Operating income−24.3Net income−66.2EPS, diluted−0.39Fiscal year 2024Revenue833.9 +0.9%Operating income16.9Net income−54.2EPS, diluted−0.31Fiscal year 2025Revenue844.6 +1.3%Operating income−3.3Net income39.6EPS, diluted0.22
FY2016FY2017FY2018FY2019FY2020FY2021FY2022FY2023FY2024FY2025
Revenue 252.6 329.9 577.9 563.1 843.8 845.0 819.8 826.3 833.9 844.6
Growth +30.6% +75.2% −2.6% +49.8% +0.1% −3.0% +0.8% +0.9% +1.3%
Operating income −13.6 −55.2 −65.4 −189.5 1.7 −117.8 −48.3 −24.3 16.9 −3.3
Net income n/a n/a −76.8 −130.1 88.6 −177.2 −98.1 −66.2 −54.2 39.6
Growth −300.0%
EPS, diluted −0.28 −0.60 −0.74 −1.19 0.61 −1.20 −0.63 −0.39 −0.31 0.22

Margins

How much of each dollar of revenue it keeps. Point at a year for the detail.
Gross marginOperating marginNet margin
Fiscal year 2016Gross margin66.4%Operating margin−5.4%Free cash flow margin5.8%Fiscal year 2017Gross margin61.1%Operating margin−16.7%Free cash flow margin1.2%Fiscal year 2018Gross margin60.1%Operating margin−11.3%Net margin−13.3%Free cash flow margin−3.0%Fiscal year 2019Gross margin56.3%Operating margin−33.6%Net margin−23.1%Free cash flow margin8.0%Fiscal year 2020Gross margin53.4%Operating margin0.2%Net margin10.5%Free cash flow margin8.9%Fiscal year 2021Gross margin52.6%Operating margin−13.9%Net margin−21.0%Free cash flow margin0.2%Fiscal year 2022Gross margin48.9%Operating margin−5.9%Net margin−12.0%Free cash flow margin−4.5%Fiscal year 2023Gross margin49.4%Operating margin−2.9%Net margin−8.0%Free cash flow margin0.9%Fiscal year 2024Gross margin52.7%Operating margin2.0%Net margin−6.5%Free cash flow margin3.3%Fiscal year 2025Gross margin49.8%Operating margin−0.4%Net margin4.7%Free cash flow margin3.1%
FY2016FY2017FY2018FY2019FY2020FY2021FY2022FY2023FY2024FY2025
Gross margin 66.4% 61.1% 60.1% 56.3% 53.4% 52.6% 48.9% 49.4% 52.7% 49.8%
Operating margin −5.4% −16.7% −11.3% −33.6% 0.2% −13.9% −5.9% −2.9% 2.0% −0.4%
Net margin n/a n/a −13.3% −23.1% 10.5% −21.0% −12.0% −8.0% −6.5% 4.7%
Free cash flow margin 5.8% 1.2% −3.0% 8.0% 8.9% 0.2% −4.5% 0.9% 3.3% 3.1%

Cash flow

The cash the business makes, what it reinvests, and what it hands back. Point at a year for the detail.
Operating cash flowCapital expenditureFree cash flow
Fiscal year 2016Operating cash flow19.2Capital expenditure−4.6Free cash flow14.6Buybacks−9.5Fiscal year 2017Operating cash flow8.1Capital expenditure−4.0Free cash flow4.1 −72.0%Buybacks0.0Fiscal year 2018Operating cash flow−9.6Capital expenditure−7.9Free cash flow−17.5 −528.9%Buybacks0.0Fiscal year 2019Operating cash flow55.7Capital expenditure−10.8Free cash flow44.9Buybacks−4.5Fiscal year 2020Operating cash flow101.6Capital expenditure−26.7Free cash flow74.8 +66.8%Buybacks0.0Fiscal year 2021Operating cash flow19.2Capital expenditure−17.1Free cash flow2.1 −97.3%Buybacks0.0Fiscal year 2022Operating cash flow−26.4Capital expenditure−10.3Free cash flow−36.6 −1,886.2%Fiscal year 2023Operating cash flow17.1Capital expenditure−9.4Free cash flow7.7Fiscal year 2024Operating cash flow50.2Capital expenditure−22.4Free cash flow27.8 +261.2%Fiscal year 2025Operating cash flow51.4Capital expenditure−25.3Free cash flow26.1 −6.4%Buybacks−9.0
FY2016FY2017FY2018FY2019FY2020FY2021FY2022FY2023FY2024FY2025
Operating cash flow 19.2 8.1 −9.6 55.7 101.6 19.2 −26.4 17.1 50.2 51.4
Capital expenditure −4.6 −4.0 −7.9 −10.8 −26.7 −17.1 −10.3 −9.4 −22.4 −25.3
Free cash flow 14.6 4.1 −17.5 44.9 74.8 2.1 −36.6 7.7 27.8 26.1
Growth −72.0% −528.9% +66.8% −97.3% −1,886.2% +261.2% −6.4%
Buybacks −9.5 0.0 0.0 −4.5 0.0 0.0 n/a n/a n/a −9.0

Balance sheet

What it holds against what it owes, at each year end. Point at a year for the detail.
CashTotal debt
Fiscal year 2016Cash31.9Shareholders’ equity219.1Fiscal year 2017Cash57.1Total debt20.0Net cash (debt)37.1Shareholders’ equity615.4Debt to equity0.03Fiscal year 2018Cash43.7Total debt0.0Net cash (debt)43.7Shareholders’ equity590.3Debt to equity0.00Fiscal year 2019Cash44.6Total debt48.5Net cash (debt)−3.9Shareholders’ equity483.3Debt to equity0.10Fiscal year 2020Cash128.4Total debt384.6Net cash (debt)−256.1Shareholders’ equity686.9Debt to equity0.56Fiscal year 2021Cash103.9Total debt370.3Net cash (debt)−266.4Shareholders’ equity527.2Debt to equity0.70Fiscal year 2022Cash67.3Total debt326.3Net cash (debt)−259.1Shareholders’ equity518.4Debt to equity0.63Fiscal year 2023Cash26.5Total debt232.6Net cash (debt)−206.1Shareholders’ equity452.8Debt to equity0.51Fiscal year 2024Cash87.8Total debt336.9Net cash (debt)−249.1Shareholders’ equity404.6Debt to equity0.83Fiscal year 2025Cash96.4Total debt333.3Net cash (debt)−236.9Shareholders’ equity449.0Debt to equity0.74
FY2016FY2017FY2018FY2019FY2020FY2021FY2022FY2023FY2024FY2025
Cash 31.9 57.1 43.7 44.6 128.4 103.9 67.3 26.5 87.8 96.4
Total debt n/a 20.0 0.0 48.5 384.6 370.3 326.3 232.6 336.9 333.3
Net cash (debt) n/a 37.1 43.7 −3.9 −256.1 −266.4 −259.1 −206.1 −249.1 −236.9
Shareholders’ equity 219.1 615.4 590.3 483.3 686.9 527.2 518.4 452.8 404.6 449.0
Debt to equity n/a 0.03 0.00 0.10 0.56 0.70 0.63 0.51 0.83 0.74

In millions of USD, except per-share figures and ratios. Fiscal years, as last filed with the SEC.

Financial statements FY2025 · 10-K

Income statement

In millions of USD, except per-share figures; shares in millions. Fiscal years ending December, each column as last filed with the SEC.
Click a line to chart it
Fiscal year FY2016 31 Dec 2016 FY2017 31 Dec 2017 FY2018† 31 Dec 2018 FY2019 31 Dec 2019 FY2020 31 Dec 2020 FY2021 31 Dec 2021 FY2022 31 Dec 2022 FY2023 31 Dec 2023 FY2024 31 Dec 2024 FY2025 31 Dec 2025
Revenue and profit
252.6 329.9 577.9 563.1 843.8 845.0 819.8 826.3 833.9 844.6
Growth +30.6% +75.2% −2.6% +49.8% +0.1% −3.0% +0.8% +0.9% +1.3%
85.0 128.4 230.6 246.0 393.0 400.3 418.8 418.3 394.4 423.9
167.6 201.5 347.3 317.1 450.8 444.7 400.9 408.1 439.5 420.7
Growth +20.2% +72.4% −8.7% +42.2% −1.4% −9.8% +1.8% +7.7% −4.3%
72.8 101.5 145.5 141.1 194.5 194.9 203.7 190.7 179.9 178.9
35.9 47.6 66.0 53.9 63.3 53.7 51.1 55.0 68.7 64.2
−13.6 −55.2 −65.4 −189.5 1.7 −117.8 −48.3 −24.3 16.9 −3.3
Growth −7,157.9% −119.7%
−11.4 −53.7 −73.4 −122.9 93.3 −208.1 −112.6 −55.4 −46.1 −45.1
2.5 −18.4 3.4 7.2 4.7 −31.0 −14.5 10.8 8.2 −84.7
n/a n/a −76.8 −130.1 88.6 −177.2 −98.1 −66.2 −54.2 39.6
Growth −300.0%
Per share
−0.28 −0.60 −0.74 −1.19 0.64 −1.20 −0.63 −0.39 −0.31 0.22
−0.28 −0.60 −0.74 −1.19 0.61 −1.20 −0.63 −0.39 −0.31 0.22
Growth −296.7%
49.4 58.8 103.9 109.7 139.0 147.6 156.7 170.4 174.0 176.2
49.4 58.8 103.9 109.7 144.7 147.6 156.7 170.4 174.0 179.8
Growth +19.1% +76.7% +5.6% +31.8% +2.0% +6.2% +8.8% +2.1% +3.3%

† The diluted share count jumps at 2018, so per-share figures either side of that column are not comparable. Usually a split, but the break lands on the restatement boundary rather than on the split date, because every column is that period’s latest filing.

Five years in brief

Worked out from the figures above, not from a press release
  • Revenue grew 0.0% a year over five years.
  • Operating margin is flat at -0.4%.
  • A net loss in 6 of 8 years on file.