X0306 4 2014-08-14 0 0000926282 ADTRAN INC ADTN 0001264261 Walker Kathryn A 901 EXPLORER BLVD. HUNTSVILLE AL 35806 1 0 0 0 Common Stock 2015-05-14 4 M 0 24.033 A 5572.033 D Common Stock 2015-05-14 4 M 0 0.033 16.64 D 5572 D Dividend Equivalent Rights 2014-08-14 4 A 0 7.622 0.00 A Common Stock 7.622 7.622 D Dividend Equivalent Rights 2014-11-13 4 A 0 8.946 0.00 A Common Stock 8.946 16.568 D Dividend Equivalent Rights 2015-05-14 4 D 0 34.157 16.64 A Common Stock 34.157 14.461 D Dividend Equivalent Rights 2015-05-21 4 A 0 19.533 0.00 A Common Stock 19.533 33.994 D Dividend Equivalent Rights 2015-08-13 4 A 0 20.721 0.00 A Common Stock 20.721 54.715 D Dividend Equivalent Rights 2015-11-12 4 A 0 21.448 0.00 A Common Stock 21.448 76.164 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 economic equivalent of one share of the Company's common stock. The dividend equivalent rights accrued when and as dividends were paid on the Company's common stock. Each dividend equivalent right is the economic equivalent of one share of the Company's common stock. The amounts previously reported for these transactions were misstated on a Form 4 filed on January 5, 2015 as 15.244 dividend equivalent rights on 8/14/2014 and 17.82 dividend equivalent rights on 11/13/2014. Gayle S. Ellis by Power of Attorney 2015-11-18