X0306 4 2019-05-16 0 0000926282 ADTRAN INC ADTN 0001201037 HUSS H FENWICK ADTRAN 901 EXPLORER BLVD HUNTSVILLE AL 35806 1 0 0 0 Dividend Equivalent Rights 2019-05-16 4 A 0 45.815 0 A Common Stock 45.815 97.302 D Settlement of dividend equivalent rights in connection with lapse of restriction on restricted stock. The rights accrued when and as dividends were paid on the Company's common stock and are paid in whole shares of common stock with the remainder paid in cash. Each divided equivalent right is the equivalent of one share of the Company's common stock. Thomas Wardell 2019-05-16