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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	2010-03-18	16,905	$1.48	1,572,060	No	4	S	Direct
Class A Common Stock	Disposition	2010-03-19	13,700	$1.45	1,558,360	No	4	S	Direct
Class A Common Stock	Disposition	2010-03-19	73,598	$1.40	1,484,762	No	4	S	Direct
Class A Common Stock	Disposition	2010-03-18	848,601	$1.48	78,915,329	No	4	S	Indirect	See Remarks
Class A Common Stock	Disposition	2010-03-19	687,900	$1.45	78,227,429	No	4	S	Indirect	See Remarks
Class A Common Stock	Disposition	2010-03-19	3,694,331	$1.40	74,533,098	No	4	S	Indirect	See Remarks

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

Footnotes

Of these shares, LS Power Equity Partners, L.P. ("LSPEP") sold 520,560 shares, LS Power Equity Partners PIE I, L.P. ("PIE I") sold 315,654 shares and LSP Gen Investors, L.P. ("Gen Investors") sold 12,387 shares.
Of these shares, LSPEP directly holds 48,409,282 shares, PIE I directly holds 29,354,132 shares, and Gen Investors directly holds 1,151,915 shares.
Of these shares, LSPEP sold 422,000 shares, PIE I sold 255,900 shares, and Gen Investors sold 10,000 shares.
Of these shares, LSPEP directly holds 47,987,282 shares, PIE I directly holds 29,098,232 shares, and Gen Investors directly holds 1,141,915 shares.
Of these shares, LSPEP sold 2,266,206 shares, PIE I sold 1,374,158 shares, and Gen Investors sold 53,967 shares.
Of these shares, LSPEP directly holds 45,721,076 shares, PIE I directly holds 27,724,074 shares, and Gen Investors directly holds 1,087,948 shares.