X0306 4 2020-06-04 0 0000926282 ADTRAN INC ADTN 0001371377 Wilson James Denson Jr 901 EXPLORER BLVD HUNTSVILLE AL 35806 0 1 0 0 Chief Revenue Officer Phantom Stock 2020-06-04 4 A 0 125.866 0 A Common Stock 125.866 16476.821 D Each share of phantom stock represents a right to receive one share of common stock at the cash value thereof. Phantom stock held in a deferred compensation plan by the Reporting Person, which becomes payable six months after the Reporting Person's separation of service with the Company. The Reporting Person may transfer the phantom stock into an alternative investment at any time. Amy Moss, by power of attorney 2020-06-05