RBBN on Nasdaq

Ribbon Communications

American communications software company

Ribbon Communications Inc. is a public company that makes software, IP and optical networking solutions for service providers, enterprises and critical infrastructure sectors. The company was formed in 2017, following the merger of Genband and Sonus Networks and is headquartered in Plano, Texas.3 Its shares trade on Nasdaq under the symbol RBBN.1 Wikipedia text CC BY-SA 4.0

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Last updated Oct 21, 2026.

Overview

2017Founded1

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  • TickerRBBN on Nasdaq1
  • Industrytelecommunications1
  • HeadquartersWestford1
  • Websiteribboncommunications.com
  • Legal formDelaware corporation1
  • Incorporated inDE5
  • Business address6500 Chase Oaks Boulevard, Plano, Tx 750235
  • Filer categoryAccelerated filer5
  • LEI549300L1E8Z8RL7CUL524
  • StatusActive4
  • LEI statusLapsed (not renewed)4
  • Registered addressC/O UNITED AGENT GROUP INC., 19803 Wilmington, United States4
  • Registered withDivision of Corporations, Department of State, 64166094

Ribbon Communications Inc. is a public company that makes software, IP and optical networking solutions for service providers, enterprises and critical infrastructure sectors. The company was formed in 2017, following the merger of Genband and Sonus Networks and is headquartered in Plano, Texas.3

Financials

From the company’s reports to the SEC. Every number links to the filing it came from.

Key numbers, fiscal 2025

49.8%Gross margin8
-0.4%Operating margin8
4.7%Net margin8
1.3%Revenue growth, 20258
8.8%Return on equity8
0.72×Debt to equity8
$26.1MFree cash flow8

What sells

Revenue by product, business segment and region, as the company reports it to the SEC.

Products and services

Service brought in 50% of the revenue Ribbon Communications broke down this way in fiscal 2025.

  1. Service$410.0M850%up 6% from 2024
  2. Service Revenue, Maintenance$270.6M833%down 1% from 2024
  3. Service Revenue, Professional Services$139.4M817%up 24% from 2024
Products and services by year
Products and services202320242025
Service$381.2M$386.7M$410.0M
Service Revenue, Maintenance$279.7M$274.6M$270.6M
Service Revenue, Professional Services$101.5M$112.1M$139.4M

Business segments

Cloud and Edge brought in 61% of the revenue Ribbon Communications broke down this way in fiscal 2025.

  1. Cloud and Edge$511.4M861%up 1% from 2024
  2. IP Optical Networks$333.1M839%up 1% from 2024
Business segments by year
Business segments202320242025
Cloud and Edge$477.6M$505.2M$511.4M
IP Optical Networks$348.7M$328.7M$333.1M

Regions

United States brought in 48% of the revenue Ribbon Communications broke down this way in fiscal 2025.

  1. United States$403.0M848%up 2% from 2024
  2. EMEA$214.2M825%down 9% from 2024
  3. Asia Pacific$181.0M821%up 19% from 2024
  4. Other Geographical Location$46.5M86%down 10% from 2024
Regions by year
Regions202320242025
United States$344.4M$396.0M$403.0M
EMEA$261.9M$234.7M$214.2M
Asia Pacific$167.1M$151.6M$181.0M
Other Geographical Location$52.9M$51.6M$46.5M

Where the money goes

Where each dollar of revenue went, fiscal 2025

  • Cost of revenue50¢$423.9M
  • Research and development21¢$178.9M
  • Other costs14¢$117.5M
  • Income tax10¢$84.7M
  • Profit5¢$39.6M

Out of $844.6M in revenue.8

Where each dollar of operating cash went, fiscal 2025

  • Capital spending49¢$25.3M
  • Share buybacks17¢$9.0M
  • Kept or used elsewhere33¢$17.1M

Out of $51.4M of cash from operations.8

Financial statements

Revenue91011128$844.6M in 2025+50% since 2019
0$250.0M$500.0M$750.0M$1.0B2019: $563.1M$563.1M20192020: $843.8M$843.8M2020+50%2021: $845.0M$845.0M2021+0%2022: $819.8M$819.8M2022−3%2023: $826.3M$826.3M2023+1%2024: $833.9M$833.9M2024+1%2025: $844.6M$844.6M2025+1%
Gross profit91011128$420.7M in 2025+33% since 2019
0$200.0M$400.0M$600.0M2019: $317.1M$317.1M20192020: $450.8M$450.8M2020+42%2021: $444.7M$444.7M2021−1%2022: $400.9M$400.9M2022−10%2023: $408.1M$408.1M2023+2%2024: $439.5M$439.5M2024+8%2025: $420.7M$420.7M2025−4%
Operating income91011128-$3.3M in 2025−98% since 2019
-$200.0M-$100.0M0$100.0M2019: -$189.5M-$189.5M20192020: $1.7M$1.7M20202021: -$117.8M-$117.8M20212022: -$48.3M-$48.3M2022−59%2023: -$24.3M-$24.3M2023−50%2024: $16.9M$16.9M20242025: -$3.3M-$3.3M2025
Net income91011128$39.6M in 2025
-$200.0M-$100.0M0$100.0M2019: -$130.1M-$130.1M20192020: $88.6M$88.6M20202021: -$177.2M-$177.2M20212022: -$98.1M-$98.1M2022−45%2023: -$66.2M-$66.2M2023−33%2024: -$54.2M-$54.2M2024−18%2025: $39.6M$39.6M2025

Every line of the income statement as filed: the last 3 fiscal years, latest first.8

Period ending2025-12-312024-12-312023-12-31
Total revenue$844.6M$833.9M$826.3M
Total cost of revenue$423.9M$394.4M$418.3M
Gross profit$420.7M$439.5M$408.1M
Research and development$178.9M$179.9M$190.7M
Sales and marketing$133.1M$137.8M$137.5M
General and administrative$64.2M$68.7M$55.0M
Amortization of acquired intangible assets$23.8M$26.0M$28.6M
Acquisition-, disposal- and integration-related$4.3M$4.5M
Restructuring and related$19.7M$10.2M$16.2M
Total operating expenses$424.0M$422.6M$432.4M
(Loss) income from operations-$3.3M$16.9M-$24.3M
Interest expense, net-$44.0M-$33.8M-$27.3M
Other income (expense), net$2.2M-$29.1M-$3.8M
Loss before income taxes-$45.1M-$46.1M-$55.4M
Income tax benefit (provision)$84.7M-$8.2M-$10.8M
Net income (loss)$39.6M-$54.2M-$66.2M
Basic (in dollars per share)$0.22-$0.31-$0.39
Diluted (in dollars per share)$0.22-$0.31-$0.39
Basic (in shares)176.2M shares174.0M shares170.4M shares
Diluted (in shares)179.8M shares174.0M shares170.4M shares

Compare Ribbon Communications with another company

Corporate structure

Ribbon Communications sits at the top of its group. 44 entities, 34 countries on record. Switch between the flow chart and the network, and select any entity to see its details.

Major holders of Ribbon Communications

  • Ribbon Communications Westford, Massachusetts, United States
    • American Virtual Cloud Technologies, Inc. Stake · Atlanta, Georgia
    • ECI de Argentina S.A. Subsidiary · Argentina
    • ECI Telecom 2005 LLC Subsidiary · Russia
    • ECI Telecom Group Ltd. Subsidiary · Israel
    • ECI Telecom Holdings B.V. Vietnam Rep. Office Subsidiary · Vietnam
    • ECI Telecom India Private Limited Subsidiary · India
    • ECI Telecom Kenya Limited Subsidiary · Kenya
    • ECI Telecom Ltd. Subsidiary · Israel
    • ECI Telecom Ukraine LLC Subsidiary · Ukraine
    • GENBAND Canada B.V. Subsidiary · Netherlands
    • GENBAND NS B.V. Subsidiary · Netherlands
    • N.E.T. APLA, Inc. – Uruguay Branch Subsidiary · Uruguay
    • Negev Telecom Ltd. Subsidiary · Israel
    • Ribbon Communication Pvt. Ltd. Subsidiary · India
    • Ribbon Communications Australia Pty Ltd Subsidiary · Australia
    • Ribbon Communications Canada ULC Subsidiary · Canada
    • Ribbon Communications Costa Rica S.A. Subsidiary · Costa Rica
    • Ribbon Communications Czech Republic s.r.o. Subsidiary · Czechia
    • Ribbon Communications do Brasil Ltda. Subsidiary · Brazil
    • Ribbon Communications France EURL Subsidiary · France
    • Ribbon Communications Germany GmbH Subsidiary · Germany
    • Ribbon Communications Hong Kong Limited Subsidiary · Hong Kong
    • RIBBON COMMUNICATIONS INTERNATIONAL LIMITED Subsidiary · Galway, Ireland
    • Ribbon Communications Israel Ltd. Subsidiary · Israel
    • Ribbon Communications Italy S.R.L. Subsidiary · Italy
    • and 18 more

Built from parent and subsidiary links from GLEIF, the Global Legal Entity Identifier Foundation (CC0); subsidiaries listed in Exhibit 21 of annual reports filed with the SEC; major holders from Schedules 13D and 13G; stakes of 5% or more it reported on Schedules 13D and 13G (1 companies). Each entity in the chart links to its source.

What it owns

What Ribbon Communications reports owning in its annual reports to the SEC: buildings, land and equipment, real estate and locations, investments, intangible assets and inventory, at the end of its latest fiscal year and a year before.

Property and equipment

ItemLatestA year beforeChange
Operating-lease assets (leased space)$46.2M8 Dec 31, 2025$34.5M8 Dec 31, 2024+33.9%

Real estate and locations

ItemLatestA year beforeChange
Countries it operates in308 Dec 31, 20253012 Dec 31, 20240%

Investments

ItemLatestA year beforeChange
Cash and cash equivalents$96.4M8 Dec 31, 2025$87.8M8 Dec 31, 2024+9.8%

Intangibles and goodwill

ItemLatestA year beforeChange
Goodwill$300.9M8 Dec 31, 2025$300.9M8 Dec 31, 20240%
Intangible assets, net (excluding goodwill)$143.3M8 Dec 31, 2025$187.5M8 Dec 31, 2024−23.6%
Finite-lived intangibles, gross$619.3M8 Dec 31, 2025$619.3M8 Dec 31, 20240%
Accumulated amortization$475.9M8 Dec 31, 2025$431.7M8 Dec 31, 2024+10.2%
Finite-lived intangibles, net$143.3M8 Dec 31, 2025$187.5M12 Dec 31, 2024−23.6%

Inventory

ItemLatestA year beforeChange
Inventory, total$78.8M8 Dec 31, 2025$79.2M8 Dec 31, 2024−0.5%
Finished goods$93.0M8 Dec 31, 2025$95.4M8 Dec 31, 2024−2.5%

Properties, in its own words

We continue to consolidate and reduce the number of facilities we operate worldwide. As of December 31, 2025, we maintained the following principal facilities:

Location · Location · Lease expiration

The rest of Item 2

Plano, Texas (a) · Corporate headquarters, sales, marketing, research and development/engineering, customer support, general and administrative · September 2032

Westford, Massachusetts (a) · Research and development, customer support, general and administrative · August 2028

Ottawa, Canada (b) · Research and development/engineering, customer support, general and administrative · December 2029

Petah Tikva, Israel · Research and development/engineering, sales and marketing, customer support, general and administrative · February 2031

Bangalore, India (Delta) · Research and development/engineering, customer support, general and administrative · December 2034

Bangalore, India (Alpha) · Research and development/engineering, customer support, general and administrative · December 2028

(a) · A portion of this facility was not in use at December 31, 2025 and is being marketed for sublease.

(b) · A portion of this facility was not in use at December 31, 2025 and some of the unused space is being subleased.

We also lease smaller spaces that are each under 50,000 square feet for our staff in various countries around the world in sales, marketing, R&D/engineering, customer services and support, as well as for warehouse purposes. We believe our remaining facilities will be adequate for our current needs and that suitable additional space will be available as needed.

Item 2 of the 10-K filed Feb 26, 2026.16

The story

Ribbon Communications was the combination of two companies, each of which had acquired other businesses over their history.

Ribbon Communications

Ribbon Communications was founded in October 2017, following the merger of Genband and Sonus Networks in May.

Ray Dolan initially headed the combined company, while Walsh led the Kandy business unit.

By December, Dolan, who had led Sonus since 2010, resigned.

Franklin (Fritz) W. Hobbs was appointed as president and CEO of the combined organization and served in that role until November 2019.

In January 2018, the company announced that its session border controllers would be used in the virtual network services of Verizon. In 2018 Ribbon also acquired Edgewater Networks.

In November 2019, Ribbon announced it would acquire ECI Telecom from Shaul Shani for $486 million in cash and stock. The company completed the merger in March 2020.

In February 2020, Bruce McClelland was named president, CEO and director. A year later, Ribbon moved its headquarters to Plano, Texas.

Read the full text

In August 2020, AVCTechnologies announced an agreement to buy Kandy Communications Business.

Genband

General Bandwidth was founded in 1999 by Paul Carew, Brendon Mills, Ron Lutz and Steve Raich in Austin, Texas, and received initial venture capital funding of $12 million. The company raised over $200 million in four rounds of venture funding and grew to over 200 people by 2003. In 2004, Mills resigned and was replaced as CEO by Charles Vogt.

In March 2006, General Bandwidth changed its name to Genband, Inc. and moved its headquarters to Plano, Texas.

Genband started as a media gateway vendor selling the G6 media gateway, but eventually branched out to IP switching, IP applications, IP Multimedia Subsystem and session border controllers.

In August 2006, Genband acquired Syndeo and Baypackets (headquartered in Fremont, California, with employees mostly in India).

In October 2006, it acquired the digital central office products known as Siemens DCO.

In 2007, Genband acquired Tekelec's switching group, which expanded product offerings in application software and SIP trunking gateways. In 2008, the company acquired Nokia Siemens Networks’ Surpass HiG media gateway product portfolio, including fixed-line trunking media gateways. The company concluded 2008 with the acquisition of NextPoint Networks, which included session border controller (SBCs) and security gateway offerings.

In May 2010, Genband purchased Nortel Networks' carrier VoIP and application business for an estimated net $182 million after Nortel became bankrupt.

Existing shareholder One Equity Partners assisted in financing.

In June 2010, Genband was re-incorporated as Genband, Inc, and disclosed an equity investment from executives and board members of about $4 million.

In December 2010, it moved its headquarters to Frisco, Texas, keeping its Plano campus as a design center. Both are near Dallas, Texas.

In January 2011, Genband acquired Cedar Point Communications in Derry, New Hampshire.

In 2012, Genband acquired Aztek Networks, a switch maker specializing in hardware that allows for a smoother transition from legacy to IP networks. Genband was named the top-ventured capital backed company by the Wall Street Journal out of nearly 6,000 companies that were considered.

On February 12, 2013, Genband announced the launch of the NUViA Cloud offering which was their entry into the SaaS market. The NUViA Unified Communications as a Service (UCaaS) offering included HD voice, video, multimedia messaging, mobility, conferencing, Web collaboration, desktop clients, and fixed and mobile convergence hosted from datacenters run by the company around the globe.

Also in 2013, Genband acquired Fringland Ltd., provider of the Fring! app, an over-the-top (OTT) mobile IP communications service provider. Two years later, it announced the Fring Alliance, a community promoting communications service providers to provide instant messaging, voice and video services to their subscribers. Charles Vogt left Genband in 2013 and David Walsh added the CEO position to his other already held title of chairman.

In 2014, Genband acquired uReach Technologies, a provider of unified communications and messaging, and introduced unified communications products and services for business customers.

In September 2014, Genband announced Kandy.io, cloud-based, real-time software support communications marketed as platform as a service (PaaS).

In May 2015, Genband was named in CNBC's "disruptor" list.

In 2016, it was involved in a patent dispute with Metaswitch.

In September 2016, pre-packaged software using the Kandy technology were announced, called "Kandy wrappers".

Sonus Networks

Sonus Networks, Inc. was founded in August 1997 by Jay Pasco-Anderson, Karl Schwiegershausen, Michael G. Hluchyj, Rubin Gruber and Tony Risica.

Hluchyj was chief technology officer, Gruber served as president until November 1998, when Hassan M. Ahmed became CEO and chairman.

There were no revenues until the quarter ending in March 2000, with accumulated losses of about $50 million against $1.1 million revenues.

On May 31, 2000, Sonus had its initial public offering (IPO), raising over $100 million. It was listed on Nasdaq with the symbol SONS.

At the time (near the end of the dot-com bubble), it was located in Westford, Massachusetts.

In January 2001, Sonus acquired Anousheh Ansari's firm Telecom Technologies, Inc., in an all-stock deal. Sonus subsequently integrated TTI's soft switch technology INtelligentIP into its own packet telephony suite.

In 2008, Richard Nottenburg joined as chief executive.

A product called a network border switch was announced in 2003, and updated in 2006.

In August 2012, Sonus acquired Network Equipment Technologies, Inc., for approximately $42 million. The acquisition complemented their existing SBC line with the NET UX series for SIP Trunking and SIP-based UC.

On December 13, 2013, Sonus agreed to acquire Performance Technologies Inc., entering into a definitive merger agreement under which Sonus would acquire PT for $3.75 per share in cash, or approximately $30 million.[6]

In 2014 Sonus acquired Performance Technologies, moving into the diameter signaling market.

In 2016 Sonus Networks Inc., acquired Taqua expanding its soft switching portfolio.

From Wikipedia’s article on Ribbon Communications, shared under CC BY-SA 4.0.6

Leadership

Who has led Ribbon Communications, and when. Pick a name to see everywhere that person has worked.

Board members and other officers (29)

Named in SEC Form D filings

People the company listed in its private-offering notices.

  • DirectorBreatriz V Infante named Aug 25, 202253
  • DirectorMariano S de Beer named Aug 25, 202253
  • DirectorRichard W Smith named Aug 25, 202253
  • DirectorShaul A Shani named Aug 25, 202253

Subsidiaries and ownership

Subsidiaries (Exhibit 21)

  • ECI Telecom 2005 LLC Russia7
  • ECI Telecom Group Ltd. Israel7
  • ECI Telecom Holdings B.V. Vietnam Rep. Office Vietnam7
  • ECI Telecom India Private Limited India7
  • ECI Telecom Kenya Limited Kenya7
  • ECI Telecom Ltd. Israel7
  • ECI Telecom Ukraine LLC Ukraine7
  • ECI de Argentina S.A. Argentina7
  • GENBAND Canada B.V. Netherlands7
  • GENBAND NS B.V. Netherlands7
  • N.E.T. APLA, Inc. – Uruguay Branch Uruguay7
  • Negev Telecom Ltd. Israel7
  • Ribbon Communication Pvt. Ltd. India7
  • Ribbon Communications Australia Pty Ltd Australia7
  • Ribbon Communications B.V. Netherlands7
  • Ribbon Communications Canada ULC Canada7
  • Ribbon Communications Costa Rica S.A. Costa Rica7
  • Ribbon Communications Czech Republic s.r.o. Czech Republic7
  • Ribbon Communications France EURL France7
  • Ribbon Communications Germany GmbH Germany7
  • Ribbon Communications Hong Kong Limited Hong Kong7
  • Ribbon Communications International Ltd. Ireland7
  • Ribbon Communications Israel Ltd. Israel7
  • Ribbon Communications Italy S.R.L. Italy7
All 44 listed subsidiaries
  • Ribbon Communications Kabushiki Kaisha Japan7
  • Ribbon Communications Malaysia Sdn. Bhd. Malaysia7
  • Ribbon Communications Mexico S. de R.L. de C.V. Mexico7
  • Ribbon Communications Operating Company, Inc. (Thailand Branch) Thailand7
  • Ribbon Communications Philippines, Inc. Philippines7
  • Ribbon Communications Rus Limited Liability Company Russia7
  • Ribbon Communications Shanghai Co., LTD Hangzhou Branch China7
  • Ribbon Communications Shanghai Co., Ltd. China7
  • Ribbon Communications Singapore Pte. Ltd. Singapore7
  • Ribbon Communications Spain, S.L. Spain7
  • Ribbon Communications Sur America Ltda. Colombia7
  • Ribbon Communications Switzerland GmbH Switzerland7
  • Ribbon Communications UK Limited UK7
  • Ribbon Communications do Brasil Ltda. Brazil7
  • Ribbon Communications sp.z.o.o. Poland7
  • Ribbon Networks B.V. Netherlands7
  • Ribbon Networks Co., Ltd. Taiwan7
  • Ribbon Networks Communications Chile Limitada Chile7
  • Ribbon Networks Saudi Arabia for Information Technology Saudi Arabia7
  • The Representative Office of Ribbon Networks B.V. in Hanoi City Vietnam7

The subsidiaries the company lists in Exhibit 21 of its annual report, as filed.

Acquisitions

  1. Succeeded GENBAND1

Former names

  • Sonus Networks, Inc.Jul 28, 2017 to Nov 28, 20175
  • Solstice Sapphire Investments, Inc.Jun 28, 2017 to Oct 27, 20175

Timeline

  1. Jul 28, 20268-K Results of operations54
  2. Jun 17, 20268-K Regulation FD disclosure55
  3. Jun 5, 20268-K Shareholder vote56
  4. Apr 28, 20268-K Results of operations; Executive or director change57
  5. Apr 15, 20268-K Executive or director change58
  6. Feb 5, 20268-K Results of operations59
  7. Oct 22, 20258-K Results of operations60
  8. Aug 29, 20258-K Executive or director change61
  9. Jul 23, 20258-K Results of operations62
  10. May 30, 20258-K Executive or director change; Bylaws or fiscal year changed; Shareholder vote63
  11. Apr 29, 20258-K Results of operations64
  12. Feb 12, 20258-K Results of operations65
  13. Mar 4, 2020New chief executive Bruce William McClelland becomes CEO17
  14. Dec 18, 2019New chief executive Kevin W. Riley becomes CEO19
  15. Nov 19, 2019New chief executive Steven M. Bruny becomes CEO18
  16. Mar 9, 2018New chief executive Franklin W. Hobbs Iv. becomes CEO20
  17. Nov 6, 2017New chief executive Raymond P. Dolan becomes CEO21
  18. 2017Went public Listed on NASDAQ1
  19. 2017Founded Founded1

Calendar

Coming up

  1. Oct 27, 2026 · After the closeReports results for the quarter ending Sep/2026 A year earlier it reported $0.01 a share, on Oct 22, 2025.66

When it reported results

  1. Jul 28, 2026Reported quarterly or annual results54
  2. Apr 28, 2026Reported quarterly or annual results57
  3. Feb 5, 2026Reported quarterly or annual results59
  4. Oct 22, 2025Reported quarterly or annual results60
  5. Jul 23, 2025Reported quarterly or annual results62
  6. Apr 29, 2025Reported quarterly or annual results64
  7. Feb 12, 2025Reported quarterly or annual results65
  8. Oct 23, 2024Reported quarterly or annual results67

Upcoming dates from Nasdaq's calendar; past results from the company's 8-K filings (Item 2.02). The full markets calendar

Filings

328 filings to the SEC since October 2021: 6 annual reports, 15 quarterly reports, 42 major events, 210 insider forms, 9 large holders, 1 private raises, 45 other. The latest 20:

  1. Jul 31, 202610-Q EDGAR
  2. Jul 28, 20268-K EDGAR
  3. Jul 15, 20264 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES EDGAR
  4. Jul 15, 20264 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES EDGAR
  5. Jun 17, 20264 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES EDGAR
  6. Jun 17, 20264 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES EDGAR
  7. Jun 17, 20264 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES EDGAR
  8. Jun 17, 20264 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES EDGAR
  9. Jun 17, 20264 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES EDGAR
  10. Jun 17, 20264 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES EDGAR
  11. Jun 17, 20264 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES EDGAR
  12. Jun 17, 20264 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES EDGAR
  13. Jun 17, 20264 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES EDGAR
  14. Jun 17, 20264 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES EDGAR
  15. Jun 17, 20264 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES EDGAR
  16. Jun 17, 20268-K EDGAR
  17. Jun 5, 20268-K EDGAR
  18. May 29, 2026SD EDGAR
  19. May 19, 20264 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES EDGAR
  20. May 19, 20264 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES EDGAR

The 328 filings since October 2021 can be filtered by form type and year here when JavaScript is on.

Every filing from the last five years, summarized. The full record is on SEC EDGAR.

Insider trades

30 open-market trades by officers, directors and large owners since October 2021: 19 buys and 11 sales. Grants, option exercises and gifts are left out.

DateWhoTradeSharesPriceValueFiling
Feb 13, 2026McClelland Bruce WilliamChief Executive OfficerBuy12,500$1.98$24.8KForm 4
Feb 11, 2026McClelland Bruce WilliamChief Executive OfficerBuy12,500$1.99$24.9KForm 4
Feb 10, 2026McClelland Bruce WilliamChief Executive OfficerBuy12,000$2.06$24.7KForm 4
Sep 8, 2025Redington DanEVP, Global SalesSale14,176$4.02$57.0KForm 4
Sep 5, 2025INFANTE BEATRIZ VDirectorSale8,690$3.98$34.6KForm 4
Sep 5, 2025Redington DanEVP, Global SalesSale155,434$4.03$626.4KForm 4
Sep 4, 2025Redington DanEVP, Global SalesSale20,000$4.16$83.2KForm 4
Sep 13, 2024INFANTE BEATRIZ VDirectorSale5,790$3.04$17.6KForm 4
Mar 15, 2024LOPEZ MIGUEL AEVP, CFOBuy2,000$2.90$5.8KForm 4
Mar 15, 2024GRAYSON BRUNS HDirectorBuy100,000$2.89$289.0KForm 4
Mar 5, 2024LOPEZ MIGUEL AEVP, CFOBuy1,000$2.98$3.0KForm 4
Mar 5, 2024LOPEZ MIGUEL AEVP, CFOBuy1,000$2.88$2.9KForm 4
Mar 4, 2024LOPEZ MIGUEL AEVP, CFOBuy1,000$2.92$2.9KForm 4
Mar 1, 2024McClelland Bruce WilliamChief Executive OfficerBuy10,000$3.02$30.2KForm 4
Mar 1, 2024McClelland Bruce WilliamChief Executive OfficerBuy9,900$3.02$29.9KForm 4
Feb 28, 2024Macken Patrick WEVP, Chief Legal OfficerSale42,094$3.07$129.2KForm 4
Feb 26, 2024Redington DanEVP, Global SalesSale34,452$3.10$106.8KForm 4
Feb 23, 2024Redington DanEVP, Global SalesSale23,964$3.09$74.0KForm 4
Feb 21, 2024Redington DanEVP, Global SalesSale7,584$3.20$24.3KForm 4
Dec 8, 2023LOPEZ MIGUEL AEVP, CFOBuy3,526$2.19$7.7KForm 4

All 30 trades can be filtered by person here when JavaScript is on.

From Forms 4 filed with the SEC.

Major holders

Investors who own more than 5% of the shares must tell the SEC: a 13D if they may seek to influence the company, a 13G if they hold passively.

Stakes it holds

Ribbon Communications has told the SEC it owns more than 5% of 1 company, latest first (Schedules 13D and 13G).

Executive pay

What the company paid its top executives, from the summary compensation table in its proxy statement. Total pay includes salary, bonus, stock and option awards and other pay, as the company valued them.

YearExecutiveAgeSalaryTotal pay
2025Bruce McClellandPresident and Chief Executive Officer59$750.0K$17.5M73
2025Patrick MackenExecutive Vice President, Chief Legal Officer and Corporate Secretary52$478.5K$2.5M73
2025Dan RedingtonFormer Executive Vice President, Global Sales$1.4M$2.0M73
2025John TownsendExecutive Vice President and Chief Financial Officer63$500.0K$641.7K73
2025Sam BucciExecutive Vice President and Chief Operating Officer61$493.1K$25.5K73
2025Steve McCafferyExecutive Vice President, Global Sales59$105.9K$12.0K73
2024Bruce McClellandPresident and Chief Executive Officer59$750.0K$4.5M73
2024John TownsendExecutive Vice President and Chief Financial Officer63$2.6M$2.7M73
2024Patrick MackenExecutive Vice President, Chief Legal Officer and Corporate Secretary52$478.5K$1.5M73
2024Sam BucciExecutive Vice President and Chief Operating Officer61$458.9K$1.4M73
2024Dan RedingtonFormer Executive Vice President, Global Sales$430.0K$1.3M73
2023Bruce McClellandPresident and Chief Executive Officer59$750.0K$2.7M73
2023Sam BucciExecutive Vice President and Chief Operating Officer61$435.8K$1.8M73
2023Patrick MackenExecutive Vice President, Chief Legal Officer and Corporate Secretary52$435.0K$1.6M73
2023Dan RedingtonFormer Executive Vice President, Global Sales$405.0K$1.3M73

Money raised

Private offerings the company reported to the SEC on Form D.

  1. Aug 12, 2022Raised $52.1 million in a private offering of equity Form D: 13 investors so far Form D

Held by these funds

The largest holders among investment managers' 13F reports for the quarter ending Jun 30, 2026, the top 25 of 100. Change is in shares since the quarter before.

FundSharesValueShare of the fundChange
Jpmorgan Chase & Co52,042,936$115.5M0.0%−100
Neuberger Berman Group LLC18,311,073$38.7M0.0%+949,085
BlackRock, Inc.7,146,590$16.7M0.0%+422,583
Dimensional Fund Advisors LP6,286,323$14.7M0.0%−64,787
Royce & Associates LP5,090,927$11.9M0.1%+211,186
Vanguard Capital Management LLC3,925,626$9.2M0.0%−290,833
Vanguard Portfolio Management LLC3,513,067$8.2M0.0%+177,402
Paradigm Capital Management Inc/ny3,036,398$7.1M0.2%−4,999,937
Geode Capital Management, LLC2,485,064$5.8M0.0%+70,504
Connor, Clark & Lunn Investment Management Ltd.2,213,134$5.2M0.0%+123,412
State Street Corp1,930,153$4.5M0.0%+20,126
D. E. Shaw & Co., Inc.1,790,375$4.2M0.0%+251,903
Aqr Capital Management LLC1,409,795$3.3M0.0%+152,448
First Wilshire Securities Management Inc1,404,493$3.3M0.7%−2,685
Citadel Advisors LLC1,241,200$2.9M0.0%+666,211
Arrowstreet Capital, Limited Partnership1,215,230$2.8M0.0%−1,646
Marshall Wace, Llp814,132$1.9M0.0%+44,345
Charles Schwab Investment Management Inc800,159$1.9M0.0%+91,996
Northern Trust Corp749,823$1.8M0.0%+43,965
Millennium Management LLC698,458$1.6M0.0%+207,138
Vanguard Fiduciary Trust Co612,773$1.4M0.0%+25,344
Jacobs Levy Equity Management, Inc582,093$1.4M0.0%−103,217
Victory Capital Management Inc456,421$1.1M0.0%+34,070
Silverberg Bernstein Capital Management LLC418,823$980.0K0.4%−19,300
Goldman Sachs Group Inc415,430$972.1K0.0%−329,315

13F reports cover disclosed long positions in U.S. stocks only.

SEC filer profile

How Ribbon Communications is registered with the Securities and Exchange Commission, from its EDGAR record and the cover page of its latest annual report.

  • Name on EDGARRibbon Communications Inc.2
  • CIK0001708055
  • Employer ID (EIN)82-166969216
  • Filer statusAccelerated filer not an emerging growth company; not a smaller reporting company; not a shell company16
  • Incorporated inDelaware16
  • Fiscal year endsDecember 312
  • Industry code (SIC)7373 Services-Computer Integrated Systems Design2
  • SEC reviewing officeOffice of Technology, Division of Corporation Finance2
  • Business address6500 Chase Oaks Boulevard, Plano, TX 750232
  • Phone877-412-88672
  • Shares outstanding178,823,352 as of Jul 28, 202614
  • Public float$299.5M as of Jun 30, 202516
  • AuditorDeloitte & Touche LLP, Dallas, Texas PCAOB ID 34; it also attests to the company’s internal control over financial reporting16
  • On EDGAR sinceJun 28, 20172
  • Filings725 in all: 4 (436), 8-K (93), 3 (41), 10-Q (27), 4/A (13), CORRESP (11), 10-K (9), DEF 14A (9)2
    All 34 form types

    S-8 (9), SD (9), UPLOAD (9), SC 13D/A (8), 144 (7), SC 13G/A (6), 8-K/A (4), DEFA14A (4), EFFECT (3), S-4/A (3), SC 13D (3), SC 13G (3), 10-K/A (2), ARS (2), PRE 14A (2), S-3 (2), 424B3 (1), 8-K12B (1), D (1), DEFM14A (1), NT 10-K (1), NT 10-Q (1), PREM14A (1), S-3/A (1), S-4 (1), SCHEDULE 13G/A (1)

  • Latest filingsAnnual report (10-K) Feb 26, 2026
    Quarterly report (10-Q) Jul 31, 2026
    Proxy statement (DEF 14A) Apr 17, 2026
    Latest 8-K (8-K) Jul 28, 2026

Securities registered for trading

ClassSymbolExchange
Common Stock, par value $0.0001RBBNThe Nasdaq Global Select Market

From the cover page of the 10-K filed Feb 26, 2026 (Section 12(b) of the Exchange Act).16

Risk factors and legal proceedings

The risks Ribbon Communications names in Item 1A of its 10-K filed Feb 26, 2026: 50 risks under these headings, as written.16

  • Risks Related to Our Business and Industry
  • Risks Related to Our International Operations
  • Risks Related to Intellectual Property
  • Risks Related to Regulation
  • Risks Related to Our Indebtedness and Accounting Matters
  • Risks Related to Ownership of our Common Stock and Warrants
  • General Risk Factors
  • Risks Related to our Business and Industry
  • Our quarterly revenue and operating results are unpredictable and may fluctuate significantly from quarter to quarter, which could adversely affect our business, results of operations and the trading price of our common stock.
  • If we fail to compete successfully against telecommunications equipment and networking companies, our ability to increase our revenue and remain profitable will be impaired.
  • Our future success is dependent on growing our base of customers and expanding our recurring revenue from our existing customers.
  • Consolidation in the telecommunications industry could harm our business.
The other 46 risks
  • Restructuring activities could adversely affect our ability to execute our business strategy.
  • We are exposed to the credit risk of some of our customers and to credit exposures in fragile financial markets, which could result in material losses.
  • Disruptions to, or our failure to effectively develop relationships with and manage, distributors, resellers, system integrators and other channel partners, and the processes and procedures that support them, could adversely affect our ability to generate revenue from the sale of our products and services.
  • If our strategic plan, including our research and development of innovative new products and the improvement of existing products, is not aligned with our customers’ investments in the evolution of their networks, or if our products and services do not meet customers’ demands, customers may not buy our products or use our services.
  • If our products do not interoperate with our customers’ existing networks, we may not retain current customers or attract new customers.
  • We believe the telecommunications industry is in a major architectural shift to the virtualization of networks. If the architectural shift does not occur at the pace we predict, or if the products and services we have developed are not attractive to our customers after such shift takes place, our revenue could decline.
  • Failure by our strategic partners or by us in integrating products provided by our strategic partners could harm our business.
  • If our contract manufacturers fail to perform, or if we change or consolidate manufacturers, we may fail to meet the demands of our customers and damage our customer relationships, which could materially adversely affect our business.
  • We and our contract manufacturers rely on single or limited sources for supply of some components of our products and if we fail to adequately predict our manufacturing requirements or if our supply of any of these components is disrupted, we will be unable to ship our products in a timely manner, or at all.
  • If we are unable to correctly estimate future requirements for products and components that we purchase from our third-party vendors that have reached the end of their production cycle, it could harm our operating results or business.
  • Our products may have errors or defects that we find only after full deployment.
  • Disruptions to, or our failure to effectively develop, manage and maintain our government customer relationships could adversely affect our ability to generate revenue from these customers. Further, sales to government customers are subject to potential delays and cutbacks, may require specific testing efforts, or impose significant compliance obligations.
  • Any future investments, mergers or acquisitions we make or enter into, as applicable, could be difficult to integrate, disrupt our business, dilute shareholder value and seriously harm our financial condition.
  • Failure to hire and retain key personnel could negatively impact our ability to meet our business objectives and impair our future growth.
  • Man-made problems, such as war and terrorism, and natural catastrophic events may disrupt our operations and harm our operating results.
  • We may not be successful in our artificial intelligence (“AI”) initiatives, which could adversely affect our business, reputation, or financial results.
  • Risks Related to our International Operations
  • Worldwide economic conditions and uncertainties in the geopolitical environment have been and may continue to be materially adverse to our business.
  • The war between Russia and Ukraine, and the sanctions imposed as a result, could materially impact our sales to customers in that region.
  • Conditions in Israel may materially and adversely affect our business.
  • We may face risks associated with our international operations that could impair our ability to grow our international revenue.
  • Increases in tariffs, trade restrictions or taxes on our products, as well as other risks of international operations, could have an adverse impact on our operations.
  • We are exposed to fluctuations in currency exchange rates that could negatively impact our financial results and cash flows.
  • Our use and reliance upon R&D resources in global locations may expose us to unanticipated costs and/or liabilities.
  • Our business could be jeopardized if we are unable to protect our intellectual property. Additionally, in some jurisdictions, our rights may not be as strong as those we currently enjoy in the United States.
  • If we are unable to obtain necessary licenses or on-going maintenance and support of third-party technology at acceptable prices, on acceptable terms, or at all, it could harm our operating results or business.
  • A breach of the security of our information systems or those of our third-party providers could adversely affect our operating results.
  • The increasing use of AI tools, both internally and by third parties, creates risks of potential financial and reputational harm.
  • Risks associated with data privacy issues, including evolving laws, regulations and associated compliance efforts, may adversely impact our business and financial results.
  • Failure to comply with the FCPA, the UKBA and similar regulations could subject us to significant civil or criminal penalties.
  • We are subject to governmental export and import controls that could subject us to liability, require a license from the U.S. government or impair our ability to compete in international markets.
  • Regulation of the telecommunications industry, or changes in governmental regulation, interpretation or legislative reform could harm our operating results and future prospects.
  • The terms of our credit agreement could adversely affect our operating flexibility and pose risks of default, which would negatively impact our liquidity and operations.
  • If our goodwill or intangible assets become impaired, we may be required to record a significant charge to earnings.
  • If we fail to maintain appropriate internal controls in the future, we may not be able to report our financial results accurately, which may adversely affect our stock price and our business.
  • Risks Related to the Ownership of our Common Stock and Warrants
  • Anti-takeover provisions in our charter documents and under Delaware law could make an acquisition of us more difficult, limit attempts by our stockholders to replace or remove our current management and may negatively affect the market price of our common stock.
  • The choice of forum provision in our Certificate of Incorporation could limit our stockholders’ ability to obtain a favorable judicial forum for disputes with us or our directors, officers or agents.
  • The warrants are exercisable for common stock, which would increase the number of shares eligible for future resale in the public market and result in dilution to stockholders.
  • We may issue debt and equity securities that are senior to our common stock as to distributions and in liquidation, which could negatively affect the value of our common stock.
  • The warrants are speculative in nature and may not have any value.
  • Holders of the warrants will have no rights as a common stockholder until they acquire our common stock.
  • The market price of shares of our common stock may experience volatility, which could cause holders of the warrants to incur substantial losses.
  • An active trading market for the warrants does not exist and may not develop.
  • Litigation and government investigations could result in significant legal expenses and settlement payments, fines or damage awards.
  • Our stock price has been and may continue to be volatile.
  • We are party to a stockholders’ agreement with certain stockholders which provides such stockholders with certain rights that may differ from the rights of our other stockholders.
  • Delaware law and our charter documents contain provisions that could discourage or prevent a potential takeover, even if such a transaction would be beneficial to our stockholders.

Legal proceedings

We are subject to legal proceedings and claims that have not been fully resolved and that have arisen in the ordinary course of business. Our material legal proceedings are described in Part II, Item 8 of this Form 10-K in the Notes to Consolidated Financial Statements in Note 26, “Commitments and Contingencies” under the heading “Contingencies”.

The outcome of litigation is inherently uncertain. If one or more legal matters were resolved against the Company in a reporting period for amounts above management’s expectations, our financial condition and operating results for that reporting period could be materially adversely affected. We settled certain matters during the fourth quarter of 2025 that did not individually or in the aggregate have a material impact on our financial condition or operating results.

The opening of Item 3, Legal Proceedings.16

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