Ribbon Communications (RBBN) Earnings: Q3 2026 Results

The quarter ended September 30, 2026 and Ribbon Communications published the results on October 27, 2026. Revenue and diluted EPS are shown against Q3 2025, the same quarter a year earlier, which takes seasonal swings out of the comparison. Ribbon Communications reports EPS two ways: GAAP, under the accounting rules every US filer follows, and non-GAAP, which leaves out items the company considers outside its operating results. The release reconciles the two, and when they diverge, the reconciliation says why.

• Ribbon's release headline rounds revenue to $219 million. The figures here come from its statement of operations, which reports $218.7 million.

Source: Ribbon Communications Q3 2026 results, October 27, 2026. Also in the Form 10-Q for the quarter ended September 30, 2026. Figures as reported; checked against the release on November 10, 2026.

How Ribbon Communications splits revenue in its own release, under its own labels, for Q3 2026 against Q3 2025. Indented lines are parts of the line above them.

• Ribbon Communications's Cloud and Edge revenue was $123 million in Q3 2026, down 1% from $124 million in Q3 2025, 56% of total revenue.
• Ribbon Communications's IP Optical Networks revenue was $95.8 million in Q3 2026, up 5% from $90.9 million in Q3 2025, 44% of total revenue.

Segment lines are the figures writers cite most often, because they show where the growth in a quarter came from. Companies redraw their segments from time to time and restate the prior year to match, so a year-ago figure here can differ from the one printed a year ago. When that has happened, the note above says so.

From the earnings release

In its Q3 2026 release, Ribbon Communications said:

“For the fourth quarter of 2026, the Company projects revenue of $233 million to $247 million.”

“Non-GAAP gross margin is projected in a range of 53.5% to 54.5%.”

“Adjusted EBITDA is projected in a range of $40 million to $47 million.”

Source: Ribbon Q3 2026 release, Oct 27, 2026.

This is the company's own guidance as of Oct 27, 2026, quoted as given. Walnut does not make forecasts of its own. Analyst estimates for the coming quarters are on the RBBN forecast page.

Revenue and diluted EPS for the last 5 quarters. Each date links to that quarter's release.

GAAP total revenue and diluted EPS, each as first reported in that quarter's release.

We do not hold a confirmed date for Ribbon Communications's next report. Companies post the date on their investor relations site a few weeks ahead, usually with the time of the conference call.

Each quarter keeps its own page with the figures as reported, so a link to one stays pointed at the same numbers after the next report.

• Q3 2026 (this page), reported Oct 27, 2026

Ribbon Communications reports two segments. Cloud and Edge, its voice software and services business (VoIP, VoLTE, voice over 5G and unified communications), brought in $122.9 million of the $218.7 million total in Q3 2026. IP Optical Networks, which sells IP routing, switching and optical transport equipment, brought in $95.8 million. (Ribbon Form 10-Q, Q3 2026, Oct 28, 2026; Ribbon Form 10-K, 2025, Feb 26, 2026)

Product sales drove the change. Product revenue rose to $121.3 million from $110.0 million, which the 10-Q attributes to $8.5 million of higher IP Optical Networks product sales and $2.8 million of higher Cloud and Edge product sales, mainly to enterprise customers. Service revenue fell 7.6% to $97.4 million on lower maintenance and professional services. (Ribbon Form 10-Q, Q3 2026, Oct 28, 2026)

Ribbon's largest customer is Verizon, at 17% of revenue in the quarter against 18% a year earlier. The release says sales to that largest customer rose 50% from the second quarter. Enterprise customers were 31% of total revenue, up from 29%. (Ribbon Form 10-Q, Q3 2026, Oct 28, 2026; Ribbon Q3 2026 release (Form 8-K, Exhibit 99.1), Oct 27, 2026)

More than half of Ribbon's revenue comes from outside the United States: customers domiciled abroad were 54% of revenue in the quarter. By region, the United States contributed $100.5 million, Europe, Middle East and Africa $56.1 million and Asia Pacific $51.3 million. (Ribbon Form 10-Q, Q3 2026, Oct 28, 2026)

Ribbon Communications lost $9.1 million on a GAAP basis in Q3 2026, or $(0.05) per diluted share, and earned $12.4 million, or $0.07 per share, on a non-GAAP basis. The non-GAAP figure adds back $9.8 million of amortization of intangible assets, $5.7 million of stock-based compensation and $1.4 million of restructuring, and applies a tax adjustment of $5.4 million. (Ribbon Q3 2026 release (Form 8-K, Exhibit 99.1), Oct 27, 2026)

Debt service is a large fixed cost: net interest expense was $11.3 million in the quarter, about twice the $5.6 million of GAAP operating income. Ribbon also recorded a $4.6 million income tax provision on a pre-tax loss. (Ribbon Q3 2026 release (Form 8-K, Exhibit 99.1), Oct 27, 2026)

GAAP diluted shares were 178.9 million and non-GAAP diluted shares 179.6 million. Ribbon repurchased 0.4 million shares for $0.8 million in the first nine months of 2026. (Ribbon Q3 2026 release (Form 8-K, Exhibit 99.1), Oct 27, 2026; Ribbon Form 10-Q, Q3 2026, Oct 28, 2026)

Diluted EPS divides net income by the weighted average number of shares outstanding in the quarter, plus the shares that options and other equity awards could add. Buybacks shrink that count and lift EPS for the same profit; share issuance and stock awards enlarge it.

Ribbon Communications gives next-quarter revenue, non-GAAP gross margin and Adjusted EBITDA ranges in its release. For Q4 2026 it projected revenue of $233 million to $247 million, non-GAAP gross margin of 53.5% to 54.5% and Adjusted EBITDA of $40 million to $47 million. It does not provide GAAP earnings guidance. (Ribbon Q3 2026 release (Form 8-K, Exhibit 99.1), Oct 27, 2026)

The outlook table puts the full-year 2026 revenue midpoint at $814 million, plus or minus $7 million, against $573.7 million of revenue in the first nine months. (Ribbon Q3 2026 release (Form 8-K, Exhibit 99.1), Oct 27, 2026)

A consensus figure is the average of the models published by the analysts who cover Ribbon Communications, collected by a data provider and revised up to the day of the report. A quarter that lands above it says how expectations were set as much as how the business did, and the share price on the day also reflects the guidance and the lines no consensus covers.

The consensus figures on this page are Yahoo Finance's, as pulled on the date shown. Each comes with the number of analysts behind it; the smaller that number, the more one revised estimate can move the average.

The figures below are the ones Ribbon Communications's own release and filings put weight on for Q3 2026, with the latest reported value for each.

What the quarter means for a holding is a separate question from what it reported. The case for and against owning RBBN is on is RBBN a buy or a sell?, what analysts expect next is on the RBBN forecast, and what the company does is on the Ribbon Communications (RBBN) stock page.

Every number on this page can be traced to a document Ribbon Communications published. Checking one takes a couple of minutes, and it is worth doing before you quote a figure anywhere.

• The results release is the document linked in the source line above. Companies publish it on their investor relations site at the moment results go out, and it carries the headline tables: revenue, operating income, net income and EPS for the quarter and the year-ago quarter.
• The same release is filed with the SEC as Exhibit 99.1 to a Form 8-K under Item 2.02, usually on the day of the report. The SEC copy does not change after the fact, which makes it the safer thing to link when you cite a number.
• The quarterly report (Form 10-Q) follows within a few weeks and carries the full financial statements, the segment note and management's discussion of what changed. The fourth quarter is covered by the annual report (Form 10-K) instead.
• Restated comparisons are flagged in the notes on this page. When a company redraws its segments or changes how it adjusts EPS, it restates the year-ago column, so the year-ago figure in a new release can differ from the one printed a year ago. This page always uses the comparison in the newer release, because that is the like-for-like one.

A walk-through of every line in a release, with what each one tells you, is in how to read an earnings report.