X0306 4/A 2018-11-18 2018-11-20 0 0000926282 ADTRAN INC ADTN 0001300513 Foliano Michael 901 EXPLORER BLVD HUNTSVILLE AL 35806 0 1 0 0 Sr. VP Global Operations Common Stock 2018-11-18 4 A 0 1662 0 A 16566 D The reporting person is filing this amendment to correct the number of shares of the Company's common stock beneficially owned after the reported transaction. The previous reported total was 12,774 shares of the Company's common stock. In addition, the reporting person continues to beneficially own in his 401(k) Plan 226.941 shares of common stock. Roger Shannon, by Power of Attorney 2019-02-25