Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2021 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-38267 RIBBON COMMUNICATIONS INC. (Exact name of Registrant as specified in its charter) (State or other jurisdiction of incorporation or or ...

Ribbon Communications Inc. (NASDAQ:RBBN) Q4 2021 Earnings Conference Call February 16, 2022 4:30 PM ET Company Participants Tom Berry - IR Bruce McClelland - CEO Mick Lopez - CFO Sam Bucci - General Manager, Ribbon's IP Optical Networks Conference Call Participants Tim Savageaux - Northland Capital Markets Operator Greetings, and welcome to the Ribbon Communications Fourth Quarter 2021 Financial Results Conference Call. At this time, all participants are in a listen-only mode. A question-and-answer session ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2021 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-38267 RIBBON COMMUNICATIONS INC. (Exact name of Registrant as specified in its charter) (State or other jurisdiction of incorpo ...

Ribbon Communications Inc. (NASDAQ:RBBN) Q3 2021 Earnings Conference Call October 27, 2021 4:30 PM ET Company Participants Tom Berry - Investor Relations Bruce McClelland - Chief Executive Officer Mick Lopez - Chief Financial Officer Conference Call Participants Paul Silverstein - Cowen Dave Kang - B. Riley Aditya Dagaonkar - Northland Capital Operator Greetings. And welcome to the Ribbon Communications Third Quarter 2021 Financial Results Conference Call. At this time, all participants are in a listen-only ...

1 Ribbon Communications Third Quarter 2021 Results October 27, 2021 Note Regarding Forward-Looking Statements and Non-GAAP Financial Measures This presentation 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 presentation, including without limitation statements regarding the projected financial results for ...

1 Ribbon Communications Oppenheimer 24th Annual Technology, Internet & Communications Conference August 11, 2021 Note Regarding Forward-Looking Statements and Non-GAAP Financial Measures This presentation 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 presentation, including without limitation statements r ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2021 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 (State or other jurisdiction of incorporation or organization) Delaware 82-1669692 (I.R.S. Employer Identification No.) 6500 Chase Oaks Boulevard, Suite 100, Plano, Texas 75023 (Address of prin ...

Ribbon Communications 1 Second Quarter 2021 Results July 28, 2021 Note Regarding Forward-Looking Statements and Non-GAAP Financial Measures This presentation 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 presentation, including without limitation statements regarding the projected financial results for th ...

Financial Data and Key Metrics Changes - Revenue for Q2 2021 was $211 million, up 2% year-over-year when adjusted for the sale of Kandy [24] - Adjusted EBITDA was $43 million, a 60% increase year-over-year, and non-GAAP earnings per share was $0.17, up 133% from the previous year [8][19] - Cash generated from operations was $14 million, with cash and cash equivalents at $115 million, an increase of $6 million from the previous quarter [32][34] Business Line Data and Key Metrics Changes - In the IP Optical segment, sales grew 10% year-over-year, with revenue of $70 million for Q2 2021 [9][30] - Cloud and Edge business revenue was $141 million, down 1% on an organic basis, but adjusted EBITDA increased to $44 million, up from $37 million in the previous year [27] - Maintenance revenue represented 34% of total revenue, increasing by approximately $4 million from Q2 2020 [31] Market Data and Key Metrics Changes - International customers accounted for 52% of total revenue, consistent with the previous year [31] - Service providers represented 78% of revenue, while enterprise customers made up 22% [31] Company Strategy and Development Direction - The company is focusing on increasing its presence in the IP Optical Networking space, with significant wins from Rogers, Optus, and Singtel [36][37] - The strategy includes leveraging new technologies like 400 gig ZR+ and 5G network slicing to gain market share [38] - A dedicated organization has been created to target the enterprise unified communications market more effectively [39] Management's Comments on Operating Environment and Future Outlook - Management expressed concerns about the resurgence of COVID-19 in India affecting growth plans, with revenue in India dropping to approximately $17 million in Q2 [40][48] - Supply chain challenges, particularly in semiconductor availability, are expected to limit the company's ability to respond to demand changes [42] - For Q3 2021, revenue is projected to be between $215 million and $225 million, with expectations for higher gross margins and lower operating expenses [45] Other Important Information - The company completed the sale of its QualiTech business, resulting in a $2.8 million gain [21] - The company ended the quarter with a bank leverage ratio of 2.17 times, below the threshold of 2.25 times, which will reduce the interest rate margin [33] Q&A Session Summary Question: Impact of macro issues on revenue - Management indicated that revenue in India was significantly impacted, with expectations of $22 million to $24 million but only achieving $17 million in Q2 [48][49] Question: Revenue opportunities from new wins - Management noted that while these wins are significant, they do not expect substantial revenue in 2021, with material revenue expected in future years [60] Question: Deployment challenges in India - Management clarified that deployment rates dropped significantly due to COVID-19, but they are seeing some recovery in July [70][71] Question: Demand activity in optical business - Management characterized demand activity as intensive, with significant engagement in various areas [72][75] Question: Performance of cloud and edge business - Management acknowledged that while the service provider portion is performing well, the enterprise side needs improvement [80][81]

1 Ribbon Communications First Quarter 2021 Results April 28, 2021 Note Regarding Forward-Looking Statements and Non-GAAP Financial Measures This presentation 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 presentation, including without limitation statements regarding the projected financial results for th ...