X0202 4 2007-04-02 0 0001379895 DYNEGY INC. DYN 0001346748 Stone Carolyn J 1000 LOUISIANA SUITE 5800 HOUSTON TX 77002 0 1 0 0 SVP and Controller Class A common stock 2007-04-02 4 A 0 13262 A 13262 D Class A common stock 2007-04-02 4 A 0 137 A 137 I By 401(k) Plan Class A common stock 2007-04-02 4 A 0 9514 0 A 22776 D Class A common stock 2007-04-02 4 F 0 3786 9.67 D 18990 D Employee Stock Option (Right to Buy) 1.77 2007-04-02 4 A 0 4000 A 2007-04-02 2013-02-04 Class A common stock 4000 4000 D Employee Stock Option (Right to Buy) 4.48 2007-04-02 4 A 0 4188 A 2007-04-02 2014-02-10 Class A common stock 4188 4188 D Employee Stock Option (Right to Buy) 4.30 2007-04-02 4 A 0 11544 A 2007-04-02 2015-01-19 Class A common stock 11544 11544 D Employee Stock Option (Right to Buy) 4.88 2007-04-02 4 A 0 47127 A 2007-04-02 2016-03-16 Class A common stock 47127 47127 D Employee Stock Option (Right to Buy) 9.67 2007-04-02 4 A 0 37475 0 A 2017-04-02 Class A common stock 37475 34475 D On April 2, 2007, Dynegy Inc., expected to be renamed Dynegy Illinois Inc. (the ?Predecessor?), merged into a wholly owned subsidiary (the ?Merger?) of Dynegy Acquisition, Inc., now known as Dynegy Inc. (the ?Issuer?). In connection with the Merger, each share of Predecessor common stock was converted into the right to receive one share of Issuer common stock. Rounded. Reflects shares held for the Reporting Person?s account by the Trustee of the Dynegy Inc. 401(k) Savings Plan as of April 2, 2007. The grants of the options and restricted stock were approved by a committee of the Issuer?s board of directors on April 2, 2007. Restricted stock grant pursuant to Rule 16b-3(d). The stock vests in full on April 2, 2010. These shares were withheld by the Issuer to pay the taxes applicable to the vesting of 11,947 shares of restricted stock on April 2, 2007 in connection with the Merger. Each Predecessor stock option was converted into one Issuer stock option, with the same terms and conditions applicable to the Predecessor stock option, at the effective time of the Merger. Option grant pursuant to Rule 16b-3(d). The option becomes exercisable in three equal annual installments beginning April 2, 2008. /s/ Heidi D. Lewis, Attorney-in-Fact 2007-04-04