# EDGAR Filing Document

**Accession Number:** 0001708055
**File Stem:** 0001104659-25-101530
**Filing Date:** 2025-10
**Character Count:** 45647
**Document Hash:** 05e9d9b0ca3dd7bf56761b0dd823498a
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001104659-25-101530.hdr.sgml**: 20251022

**ACCESSION NUMBER**: 0001104659-25-101530

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 14

**CONFORMED PERIOD OF REPORT**: 20251022

**ITEM INFORMATION**: Results of Operations and Financial Condition

**ITEM INFORMATION**: Financial Statements and Exhibits

**FILED AS OF DATE**: 20251022

**DATE AS OF CHANGE**: 20251022

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Ribbon Communications Inc.
- **CENTRAL INDEX KEY:** 0001708055
- **STANDARD INDUSTRIAL CLASSIFICATION:** SERVICES-COMPUTER INTEGRATED SYSTEMS DESIGN [7373]
- **ORGANIZATION NAME:** 06 Technology
- **EIN:** 821669692
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 8-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-38267
- **FILM NUMBER:** 251410238

**BUSINESS ADDRESS:**
- **STREET 1:** 6500 CHASE OAKS BOULEVARD
- **CITY:** PLANO
- **STATE:** TX
- **ZIP:** 75023
- **BUSINESS PHONE:** 877-412-8867

**MAIL ADDRESS:**
- **STREET 1:** 6500 CHASE OAKS BOULEVARD
- **CITY:** PLANO
- **STATE:** TX
- **ZIP:** 75023

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Sonus Networks, Inc.
- **DATE OF NAME CHANGE:** 20171027

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Solstice Sapphire Investments, Inc.
- **DATE OF NAME CHANGE:** 20170531

?xml version='1.0' encoding='ASCII'?

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

WASHINGTON, D.C. 20549

**FORM 8-K**

**CURRENT REPORT**

**Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934**

 **October 22, 2025**

**Date of Report (Date of earliest event reported)**

**R**IBBON COMMUNICATIONS INC.**

(Exact Name of Registrant as Specified in its Charter)

Delaware 001-38267 82-1669692 <br> (State or Other Jurisdiction of Incorporation) (Commission File Number) (IRS Employer Identification No.)

**6500 Chase Oaks Blvd., Suite 100, Plano, TX 75023**

(Address of Principal Executive Offices) (Zip Code)

 **(978) 614-8100**

(Registrant's telephone number, including area code)

**N/A**

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (*see* General Instruction A.2. below):

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| |
|:---|
| Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) |
| Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) |
| Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) |
| Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) |

---

**Securities registered pursuant to Section 12(b) of the Act:**

---

| | | |
|:---|:---|:---|
| **Title of each class** | **Trading Symbol(s)** | **Name of each exchange on which registered** |
| Common Stock, par value $0.0001 | RBBN | The Nasdaq Global Select Market |

---

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ◻

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ◻

---

| | |
|:---|:---|
| **Item 2.02.** | **Results of Operations and Financial Condition.**  |

---

The information in this Item 2.02 of this Current Report on Form 8-K (the "Current Report"), including Exhibit 99.1 attached hereto, shall not be deemed "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), otherwise subject to the liabilities of that Section or incorporated by reference in any filing under the Securities Act of 1933, as amended (the "Securities Act"), or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

On October 22, 2025, Ribbon Communications Inc. (the "Company") issued a press release reporting financial information for the quarter ended September 30, 2025, a copy of which is furnished as Exhibit 99.1 to this Current Report on Form 8-K.

---

| | |
|:---|:---|
| **Item 9.01.** | **Financial Statements and Exhibits.** |

---

(d)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Exhibits.

[99.1](tm2529231d1_ex99-1.htm) [Press Release of Ribbon Communications Inc., dated October 22, 2025.](tm2529231d1_ex99-1.htm)

104 Cover Page Interactive Data File (embedded within the Inline XBRL document).

**SIGNATURE**

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

---

| | | | |
|:---|:---|:---|:---|
| Date: October 22, 2025 | **Ribbon Communications Inc.**  | **Ribbon Communications Inc.**  | **Ribbon Communications Inc.**  |
|  | By: | /s/ Patrick Macken | /s/ Patrick Macken |
|  |  | Name: | Patrick W. Macken |
|  |  | Title: | Executive Vice President, Chief Legal Officer and Secretary |

---

## Exhibit 99.1

**Exhibit 99.1** 

![](tm2529231d1_ex99-1img001.jpg)

**Ribbon Communications Inc. Reports<br> Third Quarter 2025 Financial Results**

*YTD Revenue Growth of 6% and Increased Profitability* 

*IP Optical Networks 3Q Sales up 11% YoY with Positive Contribution* 

*Acumen AIOps Platform Introduction and Significant Customer Win*

**PLANO, Texas –** <u>Ribbon Communications Inc.</u> (Nasdaq: RBBN), a global leader in real-time communications technology and IP optical networking solutions, today announced its financial results for the third quarter of 2025. Ribbon Communications is dedicated to assisting the world's largest service providers, enterprises, and critical infrastructure operators in modernizing and safeguarding their networks and services.

**Third Quarter 2025 Highlights**

**Financial Highlights** **¹:**

&nbsp;&nbsp;&nbsp;&nbsp;· Revenue was $215 million, compared to $210 million for the third quarter
of 2024

&nbsp;&nbsp;&nbsp;&nbsp;· GAAP Operating Income was $3 million, compared to a loss of $1 million for
the third quarter of 2024

&nbsp;&nbsp;&nbsp;&nbsp;· Non-GAAP Adjusted EBITDA was $29 million, compared to $30 million for the
third quarter of 2024

&nbsp;&nbsp;&nbsp;&nbsp;· GAAP Gross Margin was 50.1%, compared to 52.1% for the third quarter of 2024

&nbsp;&nbsp;&nbsp;&nbsp;· Non-GAAP Gross Margin was 52.6%, compared to 55.3% for the third quarter
of 2024

"Ribbon delivered solid results in the third quarter, with sales growing 2% year over year, an increase of 6% year to date. IP Optical Networks sales grew 11% year over year in the quarter with strong growth in EMEA and India. Cloud & Edge sales year to date have increased more than 8% with sales to Global Service Providers continuing to grow. The recent U.S. Federal Government shut down had a minor impact on our Cloud & Edge third quarter results and creates a near-term timing issue on new purchases, but related voice modernization projects are continuing to progress," stated Bruce McClelland, President and Chief Executive Officer of Ribbon Communications. "More broadly, we believe that our momentum remains strong as evidenced by the expanding number of customers initiating Network Transformation programs and continued growth in our IP Optical Networks segment."

Mr. McClelland continued, "I am also excited about our innovation pipeline. During the third quarter, we announced the launch and initial deployment of our Acumen AIOps platform with a leading U.S. service provider. Acumen is a powerful new AIOps and automation platform designed to help service providers and enterprises navigate the complexities of today's challenging operational environment and accelerate their transition to autonomous networks. Beyond AIOps, our Cloud & Edge portfolio is becoming increasingly strategic to our customers as they bring voice-enabled Agentic AI capabilities to their offerings including some of the largest global technology and software companies."

John Townsend, Chief Financial Officer of Ribbon Communications, remarked, "Our financial performance in the third quarter of 2025 was in line with our guidance range, supported by solid growth and positive adjusted EBITDA contribution in our IP Optical Networks segment. We also continued to demonstrate strong discipline with operating expenses lower year over year despite foreign exchange headwinds of approximately $3 million. Cash flow from operations was $26 million and our closing cash balance was $77 million, up $14 million from the second quarter of 2025, resulting in a net debt leverage ratio of 2.2 times at quarter end."

![](tm2529231d1_ex99-1img001.jpg)

---

| | | | | |
|:---|:---|:---|:---|:---|
| | **Three months ended** | **Three months ended** | **Nine months ended** | **Nine months ended** |
| | **September 30,** | **September 30,** | **September 30,** | **September 30,** |
| <br>**In millions, except per share amounts** | **2025** | **2024** | **2025** | **2024** |
| GAAP Revenue | $215 | $210 | $617 | $583 |
| GAAP Net income (loss) | $(12) | $(13) | $(49) | $(61) |
| Non-GAAP Net income (loss) | $7 | $8 | $12 | $16 |
| Non-GAAP Adjusted EBITDA | $29 | $30 | $67 | $63 |
| GAAP diluted earnings (loss) per share | $(0.07) | $(0.08) | $(0.28) | $(0.35) |
| Non-GAAP diluted earnings (loss) per share | $0.04 | $0.05 | $0.07 | $0.09 |
| Weighted average shares outstanding basic | 177 | 175 | 176 | 174 |
| Weighted average shares outstanding diluted | 181 | 177 | 181 | 176 |

---

<sup>1</sup> Please see the reconciliations of non-GAAP financial measures to the most directly comparable GAAP measures and additional information about non-GAAP measures in the section entitled "Discussion of Non-GAAP Financial Measures" in the attached schedules.

**Business Highlights:**

&nbsp;&nbsp;&nbsp;&nbsp;· <u>Ribbon Launches New AI Platform: Acumen™ for Autonomous Networking</u> 

&nbsp;&nbsp;&nbsp;&nbsp;· <u>Automation, Alignment, and AI: A Fireside Chat with Industry Leaders</u> 

&nbsp;&nbsp;&nbsp;&nbsp;· <u>Ribbon Expands Portfolio of DISA JITC-Certified Solutions in Support of U.S. Department of Defense Network Deployments</u> 

&nbsp;&nbsp;&nbsp;&nbsp;· <u>NGN Partners with Ribbon for Future-Ready Optical Network Infrastructure</u> 

&nbsp;&nbsp;&nbsp;&nbsp;· <u>Vibrant Broadband Transforms Middle Mile Infrastructure with Ribbon</u> 

&nbsp;&nbsp;&nbsp;&nbsp;· <u>Kerala State Leverages Ribbon for its Kerala Fiber Optic Network (KFON) Deployment</u> 

&nbsp;&nbsp;&nbsp;&nbsp;· <u>Ribbon Names Steve McCaffery Executive Vice President, Global Sales</u> 

&nbsp;&nbsp;&nbsp;&nbsp;· <u>Ribbon Appoints Fahad Najam as Senior Vice President, Investor Relations and Corporate Strategy</u> 

&nbsp;&nbsp;&nbsp;&nbsp;· <u>Ribbon to host INSIGHTS Dallas on November 11-13, 2025 in Frisco, Texas</u> 

**Business Outlook<sup>2</sup>**

For the fourth quarter of 2025, the Company projects revenue of $230 million to $250 million. Non-GAAP gross margin is projected in a range of 55% to 56%. Adjusted EBITDA is projected in a range of $42 million to $48 million.

The Company's outlook is based on current indications for its business, which are subject to change.

<sup>2</sup> GAAP earnings guidance is not provided. Please see the reconciliations of non-GAAP financial measures to the most directly comparable GAAP measures and additional information about the non-GAAP measures in the section entitled "Discussion of Non-GAAP Financial Measures" in the attached schedules.

**Upcoming Conference Schedule**

&nbsp;&nbsp;&nbsp;&nbsp;· November 18, 2025: **Craig-Hallum 16<sup>th</sup> Annual Alpha Select Conference** 

&nbsp;&nbsp;&nbsp;&nbsp;· November 19, 2025: **ROTH Technology Conference** 

&nbsp;&nbsp;&nbsp;&nbsp;· November 20, 2025: **6<sup>th</sup> Annual Needham Tech Week** 

· December 1-4, 2025: **UBS TMT Conference** 

&nbsp;&nbsp;&nbsp;&nbsp;· January 13-14, 2026: **28<sup>th</sup> Annual Needham Growth Conference** 

**Conference Call and Webcast Information**

Ribbon Communications will host a conference call to discuss the Company's financial results at 4:30 p.m. ET on Wednesday, October 22, 2025.

Dial-in Information:

US/Canada: 877-407-2991

International: 201-389-0925

Instant Telephone Access: <u>Call me™</u>

![](tm2529231d1_ex99-1img001.jpg)

A live (listen-only) webcast and replay will be available on the Company's Investor Relations website at <u>investors.ribboncommunications.com</u>.

**Investor Contact**

+1 (978) 614-8050

<u>ir@rbbn.com</u>

**Media Contact**

Catherine Berthier

+1 (646) 741-1974

<u>cberthier@rbbn.com</u>

**About Ribbon**

Ribbon Communications (Nasdaq: RBBN) delivers communications software, IP and optical networking solutions to service providers, enterprises and critical infrastructure sectors globally. We engage deeply with our customers, helping them modernize their networks for improved competitive positioning and business outcomes in today's smart, always-on and data-hungry world. Our innovative, end-to-end solutions portfolio delivers unparalleled scale, performance, and agility, including core to edge software-centric solutions, cloud-native offers, leading-edge security and analytics tools, along with IP and optical networking solutions for 5G and broadband internet. We maintain a keen focus on our commitments to Environmental, Social and Governance (ESG) matters, offering an annual Sustainability Report to our stakeholders. To learn more about Ribbon visit <u>rbbn.com</u>.

**Important Information Regarding Forward-Looking Statements**

This release contains "forward-looking statements" within the meaning of the U.S. Private Securities Litigation Reform Act of 1995, which are subject to a number of risks and uncertainties. All statements other than statements of historical facts contained in this release, including without limitation, statements regarding the Company's projected financial results for the fourth quarter of 2025 and beyond; the impact of the government shutdown on the Company's operating results, beliefs about the Company's business strategy, including new product introductions, and market share growth, are forward-looking statements. Without limiting the foregoing, the words "anticipates", "believes", "could", "estimates", "expects", "expectations", "intends", "may", "plans", "projects" and other similar language, whether in the negative or affirmative, are intended to identify forward-looking statements, although not all forward-looking statements contain these identifying words.

Forward-looking statements are based on the Company's current expectations and assumptions regarding its business, the economy and other future conditions. Because forward-looking statements relate to the future, they are subject to inherent uncertainties, risks and changes in circumstances that are unknown and/or difficult to predict and that may cause the Company's actual results, performance or achievements to be materially different from those expressed or implied by the forward-looking statements. Such risks and uncertainties include, but are not limited to, unpredictable fluctuations in quarterly revenue and operating results; the impact of restructuring and cost-containment activities; increases in tariffs, trade restrictions or taxes on the Company's products; material cybersecurity and data intrusion incidents, including any security breaches resulting in the theft, transfer, or unauthorized disclosure of customer, employee, or Company information; the impact of the government shutdown on the Company's operating results; supply chain disruptions resulting from component availability and/or geopolitical instabilities and disputes (including those related to the wars in Israel and Ukraine); the impact of military call-ups of employees in Israel; material litigation; the impact of fluctuations in interest rates; the Company's ability to comply with applicable domestic and foreign information security and privacy laws, regulations and technology platform rules or other obligations related to data privacy and security; failure to compete successfully against telecommunications equipment and networking companies; failure to grow the Company's customer base or generate recurring business from existing customers; credit risks; the timing of customer purchasing decisions and the Company's recognition of revenues; macroeconomic conditions, including inflation; the Company's ability to adapt to rapid technological and market changes; the Company's ability to generate positive returns on its research and development; the Company's ability to protect its intellectual property rights and obtain necessary licenses; the Company's ability to maintain partner, reseller, distribution and vendor support and supply relationships; the potential for defects in the Company's products; risks related to the terms of the Company's credit agreement; higher risks in international operations and markets; currency fluctuations; unanticipated adverse changes in legal, regulatory or tax laws; future accounting pronouncements or changes in the Company's accounting policies and/or failure or circumvention of the Company's controls and procedures. We therefore caution you against relying on any of these forward-looking statements.

![](tm2529231d1_ex99-1img001.jpg)

These factors are not intended to be an all-encompassing list of risks and uncertainties that may affect the Company's business and results from operations. Additional information regarding these and other factors can be found in the Company's reports filed with the Securities and Exchange Commission, including, without limitation, its Form 10-K for the year ended December 31, 2024. Any forward-looking statement made by the Company in this release speaks only as of the date on which this release was first issued. The Company undertakes no obligation to update any forward-looking statement publicly or otherwise, whether as a result of new information, future developments or otherwise, except as required by law.

**Discussion of Non-GAAP Financial Measures**

The Company's management uses several different financial measures, both GAAP and non-GAAP, in analyzing and assessing the overall performance of its business, making operating decisions, planning and forecasting future periods, and determining payments under compensation programs. The Company considers the use of non-GAAP financial measures helpful in assessing the core performance of its continuing operations and when planning and forecasting future periods. The Company's annual financial plan is prepared on a non-GAAP basis and is approved by its board of directors. In addition, budgeting and forecasting for revenue and expenses are conducted on a non-GAAP basis, and actual results on a non-GAAP basis are assessed against the annual financial plan. The Company defines continuing operations as the ongoing results of its business adjusted for certain expenses and credits, as described below. The Company believes that providing non-GAAP information to investors allows them to view the Company's financial results in the way its management views them and helps investors to better understand the Company's core financial and operating performance and evaluate the efficacy of the methodology and information used by its management to evaluate and measure such performance.

While the Company's management uses non-GAAP financial measures as tools to enhance its understanding of certain aspects of the Company's financial performance, management does not consider these measures to be a substitute for, or superior to, GAAP measures. In addition, the Company's presentations of these measures may not be comparable to similarly titled measures used by other companies. These non-GAAP financial measures should not be considered alternatives for, or in isolation from, the financial information prepared and presented in accordance with GAAP. Investors are cautioned that there are material limitations associated with the use of non-GAAP financial measures. In particular, many of the adjustments to the Company's financial measures reflect the exclusion of items that are recurring and will be reflected in its financial results for the foreseeable future.

*Stock-Based Compensation*

The expense related to stock-based awards is generally not controllable in the short-term and can vary significantly based on the timing, size and nature of awards granted. The Company believes that presenting non-GAAP operating results that exclude stock-based compensation provides investors with visibility and insight into its management's method of analysis and its core operating performance.

*Amortization of Acquired Technology (including software licenses); Amortization of Acquired Intangible Assets*

Amortization amounts are inconsistent in frequency and amount and are significantly impacted by the timing and size of acquisitions. Amortization of acquired technology is reported separately within Cost of revenue and Amortization of acquired intangible assets is reported separately within Operating expenses. These items are reported collectively as Amortization of acquired intangible assets in the accompanying reconciliations of non-GAAP and GAAP financial measures. The Company believes that excluding non-cash amortization of these intangible assets facilitates the comparison of its financial results to its historical operating results and to other companies in its industry as if the acquired intangible assets had been developed internally rather than acquired.

*Litigation Costs*

In connection with certain ongoing litigation where Ribbon is the defendant (as described in the Company's Commitments and Contingencies footnotes in its Form 10-Qs and Form 10-Ks filed with the SEC, the Company has incurred litigation costs beginning in 2023. These costs are included as a component of general and administrative expense. The Company believes that such costs are not part of its core business or ongoing operations, are unplanned, and generally are not within its control. Accordingly, the Company believes that excluding litigation costs related to these specific legal matters facilitates the comparison of the Company's financial results to its historical operating results and to other companies in its industry.

![](tm2529231d1_ex99-1img001.jpg)

*Acquisition-, Disposal- and Integration-Related*

The Company considers certain acquisition-, disposal- and integration-related costs to be unrelated to the organic continuing operations of the Company and its acquired businesses. Such costs are generally not relevant to assessing or estimating the long-term performance of the acquired assets. In 2025, the Company recorded expense for legal and professional fees associated with contemplated corporate development activities. The Company excludes such acquisition-, disposal- and integration-related costs to allow more accurate comparisons of its financial results to its historical operations and the financial results of less acquisitive peer companies and allows management and investors to consider the ongoing operations of the business both with and without such expenses.

*Restructuring and Related*

The Company has recorded restructuring and related expense to streamline operations and reduce operating costs by closing and consolidating certain facilities and reducing its worldwide workforce. The Company believes that excluding restructuring and related expense facilitates the comparison of its financial results to its historical operating results and to other companies in its industry, as there are no future revenue streams or other benefits associated with these costs.

*Preferred Stock and Warrant Liability Mark-to-Market Adjustment*

The Company recorded adjustments to the fair value of its Series A Preferred Stock and Warrants to purchase shares of the Company's common stock in Other (expense) income, net. Both of these instruments were issued in March 2023 in connection with the Company's private placement and have been classified as liabilities and marked to market each reporting period until the Series A Preferred Stock was fully redeemed on June 25, 2024. The Warrant liability remains outstanding and will continue to be marked to market each reporting period. The Company excluded these gains and losses from the change in the fair value of these liabilities because it believes that such gains or losses were not part of its core business or ongoing operations.

*Tax Effect of Non-GAAP Adjustments*

The Non-GAAP income tax provision is presented based on an estimated tax rate applied against forecasted annual non-GAAP income. The Company computes its non-GAAP estimated tax rate using its estimated GAAP annual effective tax rate for the period and adjusting for the tax effect of pre-tax non-GAAP adjustments. The Company computes a single annual non-GAAP rate for the Company and applying that rate (rather than multiple rates by jurisdiction) to its consolidated quarterly results. The Company expects that this methodology will provide a consistent rate throughout the year and allow investors to better understand the impact of income taxes on its results. Due to the methodology applied to its estimated annual tax rate, the Company's estimated tax rate on non-GAAP income will differ from its GAAP tax rate and from its actual tax liabilities.

*Adjusted EBITDA*

The Company uses Adjusted EBITDA as a supplemental measure to review and assess its performance. The Company calculates Adjusted EBITDA by excluding from income (loss) from operations: depreciation; stock-based compensation; amortization of acquired intangible assets; certain litigation costs; acquisition-, disposal- and integration-related expense; and restructuring and related expense. In general, the Company excludes the expenses that it considers to be non-cash and/or not a part of its ongoing operations. The Company may exclude other items in the future that have those characteristics. Adjusted EBITDA is a non-GAAP financial measure that is used by the investing community for comparative and valuation purposes. The Company discloses this metric to support and facilitate dialogue with research analysts and investors. Other companies may calculate Adjusted EBITDA differently than the Company does, limiting its usefulness as a comparative measure.

![](tm2529231d1_ex99-1img001.jpg)

RIBBON COMMUNICATIONS INC.

Consolidated Statements of Operations

(in thousands, except percentages and per share amounts)

(unaudited)

---

| | | | |
|:---|:---|:---|:---|
|  | Three months ended | Three months ended | Three months ended |
|  | September 30,<br>2025 | June 30<br>2025 | September 30,<br>2024 |
| Revenue: |  |  |  |
| &nbsp;&nbsp;&nbsp;Product | $109979 | $115057 | $112151 |
| &nbsp;&nbsp;&nbsp;Service | 105392 | 105526 | 98087 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total revenue | 215371 | 220583 | 210238 |
| Cost of revenue: |  |  |  |
| &nbsp;&nbsp;&nbsp;Product | 62037 | 66746 | 59405 |
| &nbsp;&nbsp;&nbsp;Service | 40311 | 39253 | 34893 |
| &nbsp;&nbsp;&nbsp;Amortization of acquired technology | 5057 | 5277 | 6323 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total cost of revenue | 107405 | 111276 | 100621 |
| Gross profit | 107966 | 109307 | 109617 |
| Gross margin | 50.1% | 49.6% | 52.1% |
| Operating expenses: |  |  |  |
| &nbsp;&nbsp;&nbsp;Research and development | 45894 | 44696 | 45645 |
| &nbsp;&nbsp;&nbsp;Sales and marketing | 33063 | 32536 | 33060 |
| &nbsp;&nbsp;&nbsp;General and administrative | 16368 | 16630 | 21588 |
| &nbsp;&nbsp;&nbsp;Amortization of acquired intangible assets | 5933 | 5975 | 6457 |
| &nbsp;&nbsp;&nbsp;Acquisition-, disposal- and integration-related | 439 | 3898 |  |
| &nbsp;&nbsp;&nbsp;Restructuring and related | 3506 | 1346 | 3794 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total operating expenses | 105203 | 105081 | 110544 |
| Income (loss) from operations | 2763 | 4226 | (927) |
| Interest expense, net | (11606) | (10977) | (11952) |
| Other (expense) income, net | (134) | (2159) | 1056 |
| Income (loss) before income taxes | (8977) | (8910) | (11823) |
| Income tax benefit (provision) | (3132) | (2183) | (1599) |
| Net income (loss) | $(12109) | $(11093) | $(13422) |
| Earnings (loss) per share: |  |  |  |
| &nbsp;&nbsp;&nbsp;Basic | $(0.07) | $(0.06) | $(0.08) |
| &nbsp;&nbsp;&nbsp;Diluted | $(0.07) | $(0.06) | $(0.08) |
| Weighted average shares used to compute earnings (loss) per share: |  |  |  |
| &nbsp;&nbsp;&nbsp;Basic | 176620 | 176749 | 174613 |
| &nbsp;&nbsp;&nbsp;Diluted | 176620 | 176749 | 174613 |

---

![](tm2529231d1_ex99-1img001.jpg)

RIBBON COMMUNICATIONS INC.

Consolidated Statements of Operations

(in thousands, except percentages and per share amounts)

(unaudited)

---

| | | |
|:---|:---|:---|
|  | Nine months ended | Nine months ended |
|  | September 30,<br>2025 | September 30,<br>2024 |
| Revenue: |  |  |
| &nbsp;&nbsp;&nbsp;Product | $307027 | $298894 |
| &nbsp;&nbsp;&nbsp;Service | 310206 | 283628 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total revenue | 617233 | 582522 |
| Cost of revenue: |  |  |
| &nbsp;&nbsp;&nbsp;Product | 186676 | 160044 |
| &nbsp;&nbsp;&nbsp;Service | 115192 | 103633 |
| &nbsp;&nbsp;&nbsp;Amortization of acquired technology | 15722 | 19406 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total cost of revenue | 317590 | 283083 |
| Gross profit | 299643 | 299439 |
| Gross margin | 48.5% | 51.4% |
| Operating expenses: |  |  |
| &nbsp;&nbsp;&nbsp;Research and development | 134158 | 134897 |
| &nbsp;&nbsp;&nbsp;Sales and marketing | 97387 | 100760 |
| &nbsp;&nbsp;&nbsp;General and administrative | 48126 | 51680 |
| &nbsp;&nbsp;&nbsp;Amortization of acquired intangible assets | 18063 | 19671 |
| &nbsp;&nbsp;&nbsp;Acquisition-, disposal- and integration-related | 4337 |  |
| &nbsp;&nbsp;&nbsp;Restructuring and related | 10193 | 8779 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total operating expenses | 312264 | 315787 |
| Income (loss) from operations | (12621) | (16348) |
| Interest expense, net | (33083) | (21818) |
| Other (expense) income, net | 836 | (15960) |
| Income (loss) before income taxes | (44868) | (54126) |
| Income tax benefit (provision) | (4561) | (6473) |
| Net loss | $(49429) | $(60599) |
| Earnings (loss) per share: |  |  |
| &nbsp;&nbsp;&nbsp;Basic | $(0.28) | $(0.35) |
| &nbsp;&nbsp;&nbsp;Diluted | $(0.28) | $(0.35) |
| Weighted average shares used to compute earnings (loss) per share: |  |  |
| &nbsp;&nbsp;&nbsp;Basic | 176366 | 173615 |
| &nbsp;&nbsp;&nbsp;Diluted | 176366 | 173615 |

---

![](tm2529231d1_ex99-1img001.jpg)

RIBBON COMMUNICATIONS INC.

Consolidated Balance Sheets

(in thousands)

(unaudited)

---

| | | |
|:---|:---|:---|
|  | September 30,<br>2025 | December 31,<br>2024 |
| &nbsp;&nbsp;&nbsp;**Assets** |  |  |
| Current assets: |  |  |
| &nbsp;&nbsp;&nbsp;Cash and cash equivalents | $74799 | $87770 |
| &nbsp;&nbsp;&nbsp;Restricted cash | 1968 | 2709 |
| &nbsp;&nbsp;&nbsp;Accounts receivable, net | 218312 | 254718 |
| &nbsp;&nbsp;&nbsp;Inventory | 80007 | 79179 |
| &nbsp;&nbsp;&nbsp;Other current assets | 43341 | 39286 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total current assets | 418427 | 463662 |
| Property and equipment, net | 66427 | 60364 |
| Intangible assets, net | 153752 | 187537 |
| Goodwill | 300892 | 300892 |
| Deferred income taxes | 91117 | 88982 |
| Operating lease right-of-use assets | 48204 | 34544 |
| Other assets | 26415 | 26573 |
|  | $1105234 | $1162554 |
| &nbsp;&nbsp;&nbsp;**Liabilities and Stockholders' Equity** |  |  |
| Current liabilities: |  |  |
| &nbsp;&nbsp;&nbsp;Current portion of term debt | $8750 | $6125 |
| &nbsp;&nbsp;&nbsp;Accounts payable | 76743 | 87759 |
| &nbsp;&nbsp;&nbsp;Accrued expenses and other | 88069 | 106251 |
| &nbsp;&nbsp;&nbsp;Operating lease liabilities | 11615 | 9443 |
| &nbsp;&nbsp;&nbsp;Deferred revenue | 106697 | 119295 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total current liabilities | 291874 | 328873 |
| Long-term debt, net of current | 326075 | 330726 |
| Warrant liability | 5103 | 8064 |
| Operating lease liabilities, net of current | 61806 | 37376 |
| Deferred revenue, net of current | 29748 | 20991 |
| Deferred income taxes | 5941 | 5941 |
| Other long-term liabilities | 24635 | 25962 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total liabilities | 745182 | 757933 |
| Commitments and contingencies |  |  |
| Stockholders' equity: |  |  |
| &nbsp;&nbsp;&nbsp;Common stock | 18 | 18 |
| &nbsp;&nbsp;&nbsp;Additional paid-in capital | 1975925 | 1970708 |
| &nbsp;&nbsp;&nbsp;Accumulated deficit | (1623614) | (1574185) |
| &nbsp;&nbsp;&nbsp;Accumulated other comprehensive income | 7723 | 8080 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total stockholders' equity | 360052 | 404621 |
|  | $1105234 | $1162554 |

---

![](tm2529231d1_ex99-1img001.jpg)

RIBBON COMMUNICATIONS INC.

Consolidated Statements of Cash Flows

(in thousands)

(unaudited)

---

| | | |
|:---|:---|:---|
|  | Nine months ended | Nine months ended |
|  | September 30,<br>2025 | September 30,<br>2024 |
| Cash flows from operating activities: |  |  |
| &nbsp;&nbsp;&nbsp;Net loss | $(49429) | $(60599) |
| &nbsp;&nbsp;&nbsp;Adjustments to reconcile net loss to cash flows (used in) provided by operating activities: |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Depreciation and amortization of property and equipment | 12182 | 10131 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Amortization of intangible assets | 33785 | 39077 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Amortization of debt issuance costs and original issue discount | 2102 | 4137 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Amortization of accumulated other comprehensive gain related to interest rate swap |  | (8196) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Stock-based compensation | 14619 | 12061 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Deferred income taxes | 52 | (14614) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Change in fair value of warrant liability | (2811) | 292 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Change in fair value of preferred stock liability |  | 8091 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Dividends accrued on preferred stock liability |  | 2743 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Payment of dividends accrued on preferred stock liability |  | (6686) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Foreign currency exchange (gains) losses | 1698 | 1357 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Changes in operating assets and liabilities: |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Accounts receivable | 34258 | 18896 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Inventory | (382) | (1630) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Other operating assets | 822 | 9456 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Accounts payable | (5017) | (7580) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Accrued expenses and other long-term liabilities | (15880) | 1624 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Deferred revenue | (3840) | (20087) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Net cash (used in) provided by operating activities | 22159 | (11527) |
| Cash flows from investing activities: |  |  |
| &nbsp;&nbsp;&nbsp;Purchases of property and equipment | (23368) | (14428) |
| &nbsp;&nbsp;&nbsp;Purchases of software licenses | - | (462) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Net cash (used in) provided by investing activities | (23368) | (14890) |
| Cash flows from financing activities: |  |  |
| &nbsp;&nbsp;&nbsp;Borrowings under revolving line of credit |  | 44106 |
| &nbsp;&nbsp;&nbsp;Principal payments on revolving line of credit |  | (44106) |
| &nbsp;&nbsp;&nbsp;Proceeds from issuance of term debt |  | 342300 |
| &nbsp;&nbsp;&nbsp;Principal payments of term debt | (3938) | (236270) |
| &nbsp;&nbsp;&nbsp;Payment of debt issuance costs |  | (5985) |
| &nbsp;&nbsp;&nbsp;Payment of preferred stock liability |  | (56850) |
| &nbsp;&nbsp;&nbsp;Proceeds from the exercise of stock options | 6 | 17 |
| &nbsp;&nbsp;&nbsp;Payment of tax obligations related to vested stock awards and units | (3827) | (3035) |
| &nbsp;&nbsp;&nbsp;Repurchase of common stock | (5731) | - |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Net cash (used in) provided by financing activities | (13490) | 40177 |
| Effect of exchange rate changes on cash and cash equivalents | 987 | (297) |
| Net (decrease) increase in cash and cash equivalents | (13712) | 13463 |
| Cash, cash equivalents and restricted cash, beginning of year | 90479 | 26630 |
| Cash, cash equivalents and restricted cash, end of period | $76767 | $40093 |

---

![](tm2529231d1_ex99-1img001.jpg)

RIBBON COMMUNICATIONS INC.

Supplemental Information

(in thousands)

(unaudited)

The following tables provide the details of stock-based compensation included as components of other line items in the Company's Consolidated Statements of Operations and the line items in which these amounts are reported.

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | Three months ended | Three months ended | Three months ended | Nine months ended | Nine months ended |
|  | September 30,<br>2025 | June 30<br>2025 | September 30,<br>2024 | September 30,<br>2025 | September 30,<br>2024 |
| **Stock-based compensation** |  |  |  |  |  |
| Cost of revenue - product | $17 | $33 | $64 | $116 | $234 |
| Cost of revenue - service | 152 | 198 | 291 | 636 | 1037 |
| &nbsp;&nbsp;&nbsp;Cost of revenue | 169 | 231 | 355 | 752 | 1271 |
| Research and development | 398 | 455 | 745 | 1578 | 2429 |
| Sales and marketing | 1493 | 1066 | 1108 | 3732 | 3219 |
| General and administrative | 3784 | 2725 | 1837 | 8557 | 5142 |
| &nbsp;&nbsp;&nbsp;Operating expense | 5675 | 4246 | 3690 | 13867 | 10790 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total stock-based compensation | $5844 | $4477 | $4045 | $14619 | $12061 |

---

![](tm2529231d1_ex99-1img001.jpg)

RIBBON COMMUNICATIONS INC.

Reconciliation of Non-GAAP and GAAP Financial Measures

(in thousands, except per share amounts)

(unaudited)

---

| | | | |
|:---|:---|:---|:---|
|  | Three months ended | Three months ended | Three months ended |
|  | September 30,<br>2025 | June 30<br>2025 | September 30,<br>2024 |
| **GAAP Gross margin** | 50.1% | 49.6% | 52.1% |
| Stock-based compensation | 0.1% | 0.1% | 0.2% |
| Amortization of acquired technology | 2.4% | 2.4% | 3.0% |
| **Non-GAAP Gross margin** | 52.6% | 52.1% | 55.3% |
| **GAAP Net income (loss)** | $(12109) | $(11093) | $(13422) |
| Stock-based compensation | 5844 | 4477 | 4045 |
| Amortization of intangible assets | 10990 | 11252 | 12780 |
| Litigation costs | 952 | 2314 | 6896 |
| Acquisition-, disposal- and integration-related | 439 | 3898 |  |
| Restructuring and related | 3506 | 1346 | 3794 |
| Preferred stock and warrant liability mark-to-market adjustment | (1170) | 94 | (583) |
| Tax effect of non-GAAP adjustments | (1501) | (2679) | (5024) |
| **Non-GAAP Net income (loss)** | $6951 | $9609 | $8486 |
| **GAAP Diluted earnings (loss) per share** | $(0.07) | $(0.06) | $(0.08) |
| Stock-based compensation | 0.04 | 0.02 | 0.02 |
| Amortization of intangible assets | 0.06 | 0.06 | 0.08 |
| Litigation costs | 0.01 | 0.01 | 0.04 |
| Acquisition-, disposal- and integration-related | \* | 0.02 |  |
| Restructuring and related | 0.02 | 0.01 | 0.02 |
| Preferred stock and warrant liability mark-to-market adjustment | (0.01) | \* | \* |
| Tax effect of non-GAAP adjustments | (0.01) | (0.01) | (0.03) |
| **Non-GAAP Diluted earnings (loss) per share** | $0.04 | $0.05 | $0.05 |
| **Weighted average shares used to compute diluted earnings (loss) per share** |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Shares used to compute **GAAP** diluted earnings (loss) per share | 176620 | 176749 | 174613 |
| &nbsp;&nbsp;&nbsp;&nbsp;Shares used to compute **Non-GAAP** diluted earnings (loss) per share | 181033 | 179884 | 177028 |
| **GAAP Income (loss) from operations** | $2763 | $4226 | $(927) |
| Depreciation | 4425 | 4288 | 3361 |
| Stock-based compensation | 5844 | 4477 | 4045 |
| Amortization of intangible assets | 10990 | 11252 | 12780 |
| Litigation costs | 952 | 2314 | 6896 |
| Acquisition-, disposal- and integration-related | 439 | 3898 |  |
| Restructuring and related | 3506 | 1346 | 3794 |
| **Non-GAAP Adjusted EBITDA** | $28919 | $31801 | $29949 |

---

\* Less than $0.01 impact on earnings (loss) per share.

![](tm2529231d1_ex99-1img001.jpg)

RIBBON COMMUNICATIONS INC.

Reconciliation of Non-GAAP and GAAP Financial Measures

(in thousands, except per share amounts)

(unaudited)

---

| | | |
|:---|:---|:---|
|  | Nine months ended | Nine months ended |
|  | September 30,<br>2025 | September 30,<br>2024 |
| **GAAP Gross Margin** | 48.5% | 51.4% |
| Stock-based compensation | 0.1% | 0.2% |
| Amortization of acquired technology | 2.6% | 3.4% |
| **Non-GAAP Gross Margin** | 51.2% | 55.0% |
| **GAAP Net income (loss)** | $(49429) | $(60599) |
| Stock-based compensation | 14619 | 12061 |
| Amortization of intangible assets | 33785 | 39077 |
| Litigation costs | 4066 | 9615 |
| Acquisition-, disposal- and integration-related | 4337 |  |
| Restructuring and related | 10193 | 8779 |
| Preferred stock and warrant liability mark-to-market adjustment | (2811) | 11126 |
| Tax effect of non-GAAP adjustments | (2779) | (4148) |
| **Non-GAAP Net income (loss)** | $11981 | $15911 |
| **GAAP Diluted earnings (loss) per share** | $(0.28) | $(0.35) |
| Stock-based compensation | 0.08 | 0.07 |
| Amortization of intangible assets | 0.19 | 0.23 |
| Litigation costs | 0.02 | 0.05 |
| Acquisition-, disposal- and integration-related | 0.03 |  |
| Restructuring and related | 0.06 | 0.05 |
| Preferred stock and warrant liability mark-to-market adjustment | (0.01) | 0.06 |
| Tax effect of non-GAAP adjustments | (0.02) | (0.02) |
| **Non-GAAP Diluted earnings (loss) per share** | $0.07 | $0.09 |
| **Weighted average shares used to compute diluted earnings (loss) per share** |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Shares used to compute **GAAP** diluted earnings (loss) per share | 176366 | 173615 |
| &nbsp;&nbsp;&nbsp;&nbsp;Shares used to compute **Non-GAAP** diluted earnings (loss) per share | 180512 | 176416 |
| **GAAP Income (loss) from operations** | $(12621) | $(16348) |
| Depreciation | 12182 | 10131 |
| Stock-based compensation | 14619 | 12061 |
| Amortization of intangible assets | 33785 | 39077 |
| Litigation costs | 4066 | 9615 |
| Acquisition-, disposal- and integration-related | 4337 |  |
| Restructuring and related | 10193 | 8779 |
| **Non-GAAP Adjusted EBITDA** | $66561 | $63315 |

---

\* Less than $0.01 impact on earnings (loss) per share.

![](tm2529231d1_ex99-1img001.jpg)

RIBBON COMMUNICATIONS INC.

Reconciliation of Non-GAAP and GAAP Financial Measures

(in thousands)

(unaudited)

---

| | | | |
|:---|:---|:---|:---|
|  | Trailing Twelve Months | Trailing Twelve Months | Trailing Twelve Months |
|  | September 30,<br>2025 | June 30<br>2025 | September 30,<br>2024 |
| **GAAP Income (loss) from operations** | $20599 | $16909 | $322 |
| Depreciation | 15590 | 14526 | 13633 |
| Stock-based compensation | 18644 | 16845 | 16953 |
| Amortization of intangible assets | 45570 | 47360 | 52243 |
| Litigation costs | 5649 | 11593 | 10153 |
| Acquisition-, disposal- and integration-related | 4337 | 3898 | 1494 |
| Restructuring and related | 11574 | 11862 | 11064 |
| **Non-GAAP Adjusted EBITDA** | $121963 | $122993 | $105862 |

---

![](tm2529231d1_ex99-1img001.jpg)

RIBBON COMMUNICATIONS INC.

Reconciliation of Non-GAAP and GAAP Financial Measures - Outlook

(unaudited)

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **Three months ending** | **Three months ending** | **Year ending** | **Year ending** |
|  | **December 31, 2025** | **December 31, 2025** | **December 31, 2025** | **December 31, 2025** |
|  | **Midpoint <sup>(1)</sup>** | **Range** | **Midpoint <sup>(1)</sup>** | **Range** |
| **Revenue ($ millions)** | $240 | +/-$10M | $857 | +/-$10M |
| **Gross margin:** |  |  |  |  |
| &nbsp;&nbsp;&nbsp;**GAAP outlook** | 53.3% |  | 50.0% |  |
| &nbsp;&nbsp;&nbsp;Stock-based compensation | 0.2% |  | 0.2% |  |
| &nbsp;&nbsp;&nbsp;Amortization of acquired technology | 2.0% |  | 2.3% |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**Non-GAAP outlook** | 55.5% | +/-0.5% | 52.5% | +/-0.2% |
| **Adjusted EBITDA ($ millions):** |  |  |  |  |
| &nbsp;&nbsp;&nbsp;**GAAP income (loss) from operations** | $24.0 |  | $11.7 |  |
| &nbsp;&nbsp;&nbsp;Depreciation | 4.4 |  | 16.6 |  |
| &nbsp;&nbsp;&nbsp;Stock-based compensation | 4.0 |  | 18.7 |  |
| &nbsp;&nbsp;&nbsp;Amortization of intangible assets | 10.6 |  | 44.4 |  |
| &nbsp;&nbsp;&nbsp;Litigation costs | 0.3 |  | 4.4 |  |
| &nbsp;&nbsp;&nbsp;Acquisition-, disposal- and integration-related |  |  | 4.3 |  |
| &nbsp;&nbsp;&nbsp;Restructuring and related | 1.7 |  | 11.9 |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**Non-GAAP outlook** | $45.0 | +/-$3M | $112.0 | +/-$3M |

---

(1) Q4 2025 and FY 2025 outlook represents the midpoint of the expected ranges