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 March 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 incorporati ...

Ribbon Communications, Inc. (NASDAQ:RBBN) Q1 2021 Earnings Conference Call April 28, 2021 4:30 PM ET Company Participants Tom Berry - VP, IR Bruce McClelland - President, CEO & Director Miguel Lopez - EVP & CFO Conference Call Participants Mike Latimore - Northland Capital Markets Dave Kang - B. Riley Securities Paul Silverstein - Cowen and Company Operator Greetings, and welcome to the Ribbon Communications First Quarter 2021 Financial Results Conference Call. [Operator Instructions]. Please note, this con ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2020 ☐ 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 incorpora ...

1 Ribbon Communications Fourth Quarter and Full Year 2020 Results February 17, 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 financ ...

Ribbon Communications Inc. (NASDAQ:RBBN) Q4 2020 Earnings Conference Call February 17, 2021 4:30 PM ET Company Participants Tom Berry - IR Bruce McClelland - CEO Mick Lopez - CFO Conference Call Participants Paul Silverstein - Cowen & Company Dave King - B. Riley Mike Latimore - Northland Capital Markets Operator Greeting, and welcome to the Ribbon Communications Fourth Quarter and Full Year 2020 Financial Results. At this time, all participants are in a listen-only mode. A question-and-answer session will ...

ribbon" Ribbon Communications Third Quarter 2020 Results October 29, 2020 Bruce McClelland President & CEO Mick Lopez EVP & CFO 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 limitati ...

Ribbon Communications, Inc. (NASDAQ:RBBN) Q3 2020 Earnings Conference Call October 29, 2020 4:30 PM ET Company Participants Monica Gould - Investor Relations Bruce McClelland - Chief Executive Officer Mick Lopez - Chief Financial Officer Conference Call Participants Paul Silverstein - Cowen & Company Liz Pate - Cowen & Company Operator Good afternoon, everyone and welcome to the Ribbon Communications Third Quarter 2020 Earnings Conference Call. All participants are currently in a listen-only mode. [Operator ...

ribbon Ribbon Communications Second Quarter 2020 Results August 5, 2020 Bruce McClelland President & CEO Mick Lopez EVP & CFO Cautionary Note Regarding Forward-Looking Statements 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 ...

Ribbon Communications Inc. (NASDAQ:RBBN) Q2 2020 Earnings Conference Call August 5, 2020 4:30 PM ET Company Participants Monica Gould - Investor Relations Bruce McClelland - Chief Executive Officer Mick Lopez - Chief Financial Officer Conference Call Participants Paul Silverstein - Cowen Mike Latimore - Northland Capital Markets Fahad Najam - Cowen and Company Operator Greetings and welcome to the Ribbon Communications Second Quarter 2020 Financial Results Conference Call. At this time, all participants are ...