X0306 4 2013-03-18 0 0001379895 DYNEGY INC. DYN 0001428577 Freeland Clint 601 TRAVIS 14TH FLOOR HOUSTON TX 77002 0 1 0 0 Exec. VP and CFO Common Stock 2013-03-18 4 A 0 21646 0 A 51537 D Employee Stock Option (Right to Buy) 23.1 2013-03-18 4 A 0 33784 0 A 2023-03-18 Common Stock 33784 33784 D The grants of the restricted stock units were approved by a committee of the Issuer's Board of Directors on March 18, 2013. Restricted stock unit grant pursuant to Rule 16b-3(d). Each restricted stock unit represents a contingent right to receive one share of Dynegy Inc. common stock. The restricted stock units vest in three annual equal installments beginning on March 18, 2014. Amount includes 27,073 restricted stock units that vest in three annual equal installments beginning on October 31, 2013 and 21,646 restricted stock units that vest in three annual equal installments beginning on March 18, 2014. The grants of the stock options were approved by a committee of the Issuer's Board of Directors on March 18, 2013. Option grant pursuant to rule 16b-3(d). The option becomes exercisable in three annual equal installments beginning March 18, 2014. /s/ Heidi D. Lewis, Attorney-in-Fact 2013-03-20