UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 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 $0.01 per share ADTN The NASDAQ Global Select Market 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, 2019 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SE ...

ADTRAN, Inc. (NASDAQ:ADTN) Q3 2019 Earnings Conference Call October 31, 2019 10:30 AM ET Company Participants Thomas Stanton - Chief Executive Officer Michael Foliano - Chief Financial Officer Conference Call Participants Ashwin Kesireddy - Goldman Sachs George Notter - Jefferies & Company Richard Valera - Needham & Company Fahad Najam - Cowen Inc. Matthew Dhane - Tieton Capital Management Paul Silverstein - Cowen Inc. Operator Ladies and gentlemen, thank you for standing by, and welcome to ADTRAN’s Third Q ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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, 2019 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: 000-24612 ADTRAN, Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 63-0918200 (State or other juri ...

ADTRAN, Inc. (NASDAQ:ADTN) Q2 2019 Earnings Conference Call July 18, 2019 10:30 AM ET Company Participants Tom Stanton – Chief Executive Officer Mike Foliano – Chief Financial Officer Conference Call Participants Ashwin Kesireddy – Goldman Sachs Paul Silverstein – Cowen Rich Valera – Needham & Company Michael Genovese – MKM Partners Operator Ladies and gentlemen, thank you for standing by and welcome to ADTRAN's Second Quarter 2019 Earnings Release Conference Call. [Operator Instructions] During the course ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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, 2019 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: 000-24612 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | |-------------------- ...

ADTRAN, Inc. (NASDAQ:ADTN) Q1 2019 Earnings Conference Call April 18, 2019 10:30 AM ET Company Participants Tom Stanton - Chief Executive Officer Mike Foliano - Chief Financial Officer Conference Call Participants Ashwin Kesireddy - Goldman Sachs Paul Silverstein - Cowen Michael Genovese - MKM Partners Rich Valera - Needham & Company George Notter - Jefferies Bill Dezellem - Tieton Capital Operator Ladies and gentlemen, thank you for standing by and welcome to ADTRAN's First Quarter 2019 Earnings Release Co ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K FOR ANNUAL AND TRANSITION REPORTS PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended December 31, 2018 ☐ 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 000-24612 ADTRAN, Inc. (Exact name of registra ...

ADTRAN, Inc. (NASDAQ:ADTN) Q4 2018 Earnings Conference Call January 24, 2019 10:30 AM ET Company Representatives Thomas Stanton - Chief Executive Officer Roger Shannon - Chief Financial Officer Conference Call Representatives Ashwin Kesireddy - Goldman Sachs Paul Silverstein - Cowen and Company Richard Valera - Needham & Company George Snyder - Jefferies Michael Genovese - MKM Partners William Dezellem - Tieton Capital Fahad Najam - Cowen and Company Operator Good day ladies and gentlemen and thank you for ...