(17) OPERATING SEGMENT INFORMATION

The Company has two operating and reportable segments, Cloud and Edge and IP Optical Networks, that align with the way the business is managed. The Company’s CODM, its President and Chief Executive Officer, makes key operating decisions and assesses performance based upon these reportable segments.

The Cloud and Edge segment provides secure and reliable software and hardware products, solutions and services for enabling Voice over Internet Protocol ("VoIP") communications, Voice over Long-Term Evolution ("VoLTE") and Voice Over 5G ("VoNR") communications, and Unified Communications and Collaboration ("UC&C") within service provider and enterprise networks and from the cloud. The Cloud and Edge products are increasingly software-centric and cloud-native for deployment on private, public or hybrid cloud infrastructures, in data centers, on enterprise premises

and within service provider networks. Ribbon's Cloud and Edge product portfolio consists primarily of its Session Border Controller (“SBC”) products and its Network Transformation products, along with related services such as large data analytics, fraud detection and prevention, and element management. The portfolio also includes the new Acumen AIOps and Automation platform.

The IP Optical Networks segment provides high-performance, secure solutions for IP networking and optical transport, supporting wireless networks including 5G, metro and edge aggregation, core networking, data center interconnect, legacy transformation and transport solutions for wholesale carriers. This portfolio is offered to service provider, enterprise and industry verticals with critical transport network infrastructures including utilities, government, defense, transportation, and education and research.

The Company does not provide segment asset information as such information is not provided to the CODM and accordingly, asset information is not used in assessing segment performance. Segment revenue and expenses included in the tables below represent direct revenue and expense attributable to each segment. Please see Note 9 for information regarding the allocation of goodwill between segments.

The CODM utilizes adjusted gross profit to evaluate each segment's performance. The Company calculates adjusted gross profit by excluding from cost of revenue both amortization of acquired technology and stock-based compensation and may also exclude other items in future periods that the Company believes are not part of the Company's core business. The Company uses adjusted gross profit to develop its annual budget and quarterly forecasts. The CODM analyzes adjusted gross profit compared to the annual budget and quarterly forecasts to allocate resources. Ribbon’s calculation of adjusted gross profit may not be comparable to similarly titled measures used by other companies. See below for a reconciliation of segment adjusted gross profit to gross profit and loss before income taxes.

The tables below present significant segment expenses regularly reviewed by the CODM for the years ended December 31, 2025, 2024 and 2023 (in thousands):

Year ended December 31, 

  ​ ​ ​

2025

  ​ ​ ​

2024

  ​ ​ ​

2023

Segment revenue:

Cloud and Edge

 

$

511,430

 

$

505,157

 

$

477,647

IP Optical Networks

 

333,126

 

328,724

 

348,692

Revenue

 

$

844,556

 

$

833,881

 

$

826,339

Year ended December 31, 

2025

  ​ ​ ​

2024

  ​ ​ ​

2023

Segment cost of revenue:

Cloud and Edge

$

188,355

 

$

175,940

 

$

177,629

IP Optical Networks

235,495

 

218,429

 

240,627

Cost of revenue

$

423,850

 

$

394,369

 

$

418,256

Year ended December 31, 

  ​ ​ ​

2025

  ​ ​ ​

2024

  ​ ​ ​

2023

Segment adjusted gross profit:

Cloud and Edge

 

$

326,717

 

$

338,194

 

$

314,594

IP Optical Networks

 

115,293

 

127,836

 

124,436

Total segment adjusted gross profit

 

442,010

 

466,030

 

439,030

Reconciliation of segment adjusted gross profit to gross profit and loss before income taxes

Stock-based compensation expense

(960)

(1,625)

(2,657)

Amortization of acquired technology

 

(20,344)

 

(24,893)

 

(28,290)

Gross profit

 

420,706

 

439,512

 

408,083

Research and development expense

178,872

179,941

190,660

Sales and marketing expense

133,075

137,830

137,460

General and administrative expense

64,239

68,740

54,962

Amortization of acquired intangible assets

23,849

25,969

28,601

Acquisition-, disposal- and integration-related expense

4,337

4,476

Restructuring and related expense

19,658

10,160

16,209

Interest expense, net

44,011

33,821

27,320

Other (income) expense, net

(2,226)

29,119

3,768

Loss before income taxes

$

(45,109)

$

(46,068)

$

(55,373)

Year ended December 31, 

  ​ ​ ​

2025

  ​ ​ ​

2024

  ​ ​ ​

2023

Segment depreciation expense:

Cloud and Edge

 

$

9,554

 

$

9,337

 

$

9,798

IP Optical Networks

 

7,174

 

4,202

 

4,307

Depreciation expense

 

$

16,728

 

$

13,539

 

$

14,105

Historical Timeline

Fiscal YearFiled
2025Feb 26, 2026Showing above
2024Feb 27, 2025
2023Feb 28, 2024
2022Mar 31, 2023
2021Mar 11, 2022
2020Feb 26, 2021
2017Mar 8, 2018

About Segments Disclosures

Segment disclosures break a company into its reportable operating units, revealing revenue, profit, and asset allocation that consolidated financial statements obscure. Under ASC 280, segments must match how the chief operating decision maker views the business, providing a window into internal management structure and resource allocation priorities.

Key signals: compare segment margins to identify which units drive profitability and which destroy value. Watch for changes in the number of reportable segments — segment aggregation or disaggregation often coincides with strategic shifts or attempts to obscure declining performance. Intersegment elimination patterns reveal internal pricing practices. The reconciliation between segment totals and consolidated figures exposes corporate overhead allocation and unallocated items. Geographic revenue concentration highlights regulatory and currency exposure. Compare segment-level capital expenditure against segment revenue to assess where management is investing for future growth versus harvesting existing assets.