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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1379895	Dynegy Inc.	DYN	Electric Services (4911)	205653152

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1405847	Ls Power Partners, L.p.	1700 Broadway 35Th Floor New York NY 10019		No	No	Yes	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Class A Common Stock	Disposition	2010-05-05	21,117	$1.30	1,003,702	No	4	S	Direct
Class A Common Stock	Disposition	2010-05-05	1,060,037	$1.30	50,384,470	No	4	S	Indirect	See Remarks
Class A Common Stock	Disposition	2010-05-06	15,200	$1.27	988,502	No	4	S	Direct
Class A Common Stock	Disposition	2010-05-06	763,034	$1.27	49,621,436	No	4	S	Indirect	See Remarks

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	S	Direct
No	4	S	Indirect	See Remarks
No	4	S	Direct
No	4	S	Indirect	See Remarks

Footnotes

Of these shares, LS Power Equity Partners, L.P. ("LSPEP") sold 650,262 shares, LS Power Equity Partners PIE I, L.P. ("PIE I") sold 394,302 shares and LSP Gen Investors, L.P. ("Gen Investors") sold 15,473 shares.
Of these shares, LSPEP directly holds 30,907,506 shares, PIE I directly holds 18,741,511 shares, and Gen Investors directly holds 735,453 shares.
Of these shares, LSPEP sold 468,070 shares, PIE I sold 283,826 shares and Gen Investors sold 11,138 shares.
Of these shares, LSPEP directly holds 30,439,436 shares, PIE I directly holds 18,457,685 shares, and Gen Investors directly holds 724,315 shares.