X0306 4/A 2018-11-12 2018-11-16 0 0000926282 ADTRAN INC ADTN 0001628537 Scheiterer Eduard 901 EXPLORER DRIVE HUNTSVILLE AL 35806 0 1 0 0 SVP, Research & Development Common Stock 2018-11-12 4 F 0 311 13.45 D 9969 D The Reporting Person is filing this amendment to correct the number of shares of the Company's common stock withheld for the payment of taxes. The previous reported amount withheld was 399 shares of the Company's common stock. The Reporting Person is filing this amendment to correct the number of shares of the Company's common stock beneficially owned after this reported transaction. The previous reported total was 9.881 shares of the Company's common stock. Amy Moss, by power of attorney 2020-03-10