UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Title of each class Trading Symbol(s) Name of each exchange on which registered Common stock, $0.001 par value DZSI The Nasdaq Stock Market LLC 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 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to 000-327 ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Title of each class Trading Symbol(s) Name of each exchange on which registered Common stock, $0.001 par value DZSI The Nasdaq Stock Market LLC 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 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to 000-32743 (C ...

DZS Inc. (OTC:DZSI) Q2 2021 Earnings Conference Call August 3, 2021 10:00 AM ET Company Participants Ted Moreau – Vice President of Investor Relations Charlie Vogt – President and Chief Executive Officer Misty Kawecki – Chief Financial Officer Conference Call Participants Tyler Burmeister – Craig-Hallum Tim Savageaux – Northland Capital John Marchetti – Stifel Dave King – B. Riley Ryan Koontz – Needham & Company Operator Good day and thank you for standing by. Welcome to the DZS Second Quarter 2021 Earnings ...

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 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to 000-32743 (Commission File Number) DZS INC. (Exact name of registrant as specified in its charter) Delaware 22-3509099 (State or other jurisdiction of inco ...

DZS, Inc. (OTC:DZSI) Q1 2021 Earnings Conference Call May 3, 2021 4:15 PM ET Company Participants Ted Moreau - VP, IR Charles Vogt - President, CEO & Director Conference Call Participants John Marchetti - Stifel, Nicolaus & Company Dave Kang - B. Riley Securities Christian Schwab - Craig-Hallum Timothy Savageaux - Northland Capital Markets Ryan Koontz - Needham & Company Operator Good day and welcome to DZS First Quarter 2021 Earnings Conference Call. [Operator Instructions]. As a reminder, this conference ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2020 OR ☐ 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: 000-32743 DZS INC. (Exact name of registrant as specified in its charter) Delaware 22-3509099 (State or other jurisdiction of incorporat ...

DZS Inc. (OTC:DZSI) Q4 2020 Earnings Conference Call February 22, 2021 4:30 PM ET Company Participants Ted Moreau - Vice President of Investor Relations Charles Vogt - President and Chief Executive Officer Thomas Cancro - Chief Financial Officer Conference Call Participants Christian Schwab - Craig-Hallum Capital Group LLC Dave Kang - B. Riley FBR, Inc. Timothy Savageaux - Northland Capital Markets John Marchetti - Stifel, Nicolaus & Co., Inc. Jon Gruber - Gruber & McBaine Capital Management, LLC Charles Te ...

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, 2020 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to 000-32743 (Commission File Number) DZS INC. (Exact name of registrant as specified in its charter) Delaware 22-3509099 (State or other jurisdiction of ...

DASAN Zhone Solutions, Inc. (OTC:DZSI) Q3 2020 Results Conference Call October 30, 2020 8:30 AM ET Company Participants Ted Moreau - VP, IR Charlie Vogt - President and CEO Tom Cancro - CFO Andrew Bender - CTO Conference Call Participants Dave Kang - B. Riley Christian Schwab - Craig-Hallum Tim Savageaux - Northland George Iwanyc - Oppenheimer Operator Ladies and gentlemen, thank you for standing by, and welcome to DZS Third Quarter 2020 Earnings Conference Call. At this time, all participant lines are in l ...

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, 2020 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to 000-32743 (Commission File Number) DASAN ZHONE SOLUTIONS, INC. (Exact name of registrant as specified in its charter) Delaware 22-3509099 (State or other ju ...