X0306 4 2020-09-03 0 0000926282 ADTRAN INC ADTN 0001201037 HUSS H FENWICK ADTRAN 901 EXPLORER BLVD HUNTSVILLE AL 35806 1 0 0 0 Dividend Equivalent Rights 2020-09-03 4 A 0 79.235 0 A Common Stock 79.235 253.378 D Settlement of dividend equivalent rights in connection with the vesting of restricted stock units. The rights accrue when and as dividends are paid on the Company's common stock and are paid in whole shares of common stock with the remainder paid in cash. Each dividend equivalent right is the equivalent of one share of the Company's common stock. Michael Foliano, by power of attorney 2020-09-08