X0306 4 2015-04-01 0 0001379895 DYNEGY INC. DYN 0001573115 Jones Henry D. 601 TRAVIS STREET SUITE 1400 HOUSTON TX 77002 0 1 0 0 EVP & Chief Commercial Officer Common Stock 2015-04-01 4 F 0 4615 30.30 D 61005 D These restricted stock units were withheld by Issuer to pay the taxes applicable to the vesting of 15,202 units of restricted stock on April 1, 2015. Reflects closing stock price on April 1, 2015. Amount includes 15,202 restricted stock units that vest on April 1, 2016, 9,263 restricted stock units that vest in two annual equal installments beginning on March 3, 2016 and 11,564 restricted stock units that vest in three annual equal installments beginning on March 3, 2016. /s/ Heidi D. Lewis, Attorney-in-Fact 2015-04-03