X0306 4 2019-08-15 0 0000926282 ADTRAN INC ADTN 0001507363 Melone Anthony J. 901 EXPLORER BOULEVARD HUNTSVILLE AL 35806 1 0 0 0 Dividend Equivalent Rights 2019-08-15 4 A 0 70.691 0 A Common Stock 70.691 167.993 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 dividend equivalent right is the equivalent of one share of the Company's common stock. Amy Moss, by power of attorney 2019-08-16