X0306 4 2015-11-12 0 0000926282 ADTRAN INC ADTN 0001371148 Schansman Raymond R 901 EXPLORER BLVD. HUNTSVILLE AL 35806 0 1 0 0 SVP Global Services & Support Phantom Stock 2015-11-12 4 A 0 51.169 15.46 A Common Stock 51.169 8840.857 D Phantom Stock 2015-11-14 4 A 0 2333 A Common Stock 2333 11173.857 D Each share of phantom stock represents a right to receive one share of common stock or the cash value thereof. The phantom stock becomes payable 6 months after the reporting person's separation of service with the Company. The reporting person may transfer his phantom stock account into an alternative investment at any time. Upon vesting of performance shares awarded pursuant to a grant under the ADTRAN, Inc. 2015 Employee Stock Incentive Plan, the reporting person deferred the receipt of shares of the Company's common stock and received instead shares of phantom stock pursuant to the Company's deferred compensation plan. Gayle S. Ellis by Power of Attorney 2016-01-21