NRG: Insider Transactions for NRG ENERGY INC

Insider Purchases - Last 6 Months
	Shares	Trans
Purchases	5,000	1
Sales	5,800	1
Net Shares Purchased (Sold)	(800)	2
Total Insider Shares Held	589.74K	N/A
% Net Shares Purchased (Sold)	(0.1%)	N/A

Net Institutional Purchases - Prior Qtr to Latest Qtr
	Shares
Net Shares Purchased (Sold)	(30,946,600)
% Change in Institutional Shares Held	(12.2%)

Data provided by Thomson Financial

INSIDER TRANSACTIONS REPORTED - LAST TWO YEARS

Date	Insider	Shares	Type	Transaction	Value*
5-Nov-09	WILSON DENISE Officer	500	Direct	Purchase at $23.93 per share.	$11,965
5-Nov-09	RAGAN JOHN W Officer	3,000	Direct	Purchase at $23.98 per share.	$71,940
2-Nov-09	CRANE DAVID W Officer	5,000	Direct	Purchase at $23.16 - $23.18 per share.	$116,000²
15-Sep-09	TATE HERBERT H Director	5,800	Direct	Sale at $27.91 per share.	$161,878
1-Aug-09	HOWELL KEVIN Officer	14,580	Direct	Disposition (Non Open Market)	N/A
1-Jun-09	MCGINTY KATHLEEN A. Director	3,795	Direct	Acquisition (Non Open Market)	N/A
1-Jun-09	HANTKE WILLIAM Director	4,533	Direct	Acquisition (Non Open Market)	N/A
1-Jun-09	SCHAUMBURG ANNE C Director	4,216	Direct	Acquisition (Non Open Market)	N/A
1-Jun-09	COBEN LAWRENCE S Director	4,216	Direct	Acquisition (Non Open Market)	N/A
1-Jun-09	CHLEBOWSKI JOHN Director	3,795	Direct	Acquisition (Non Open Market)	N/A
1-Jun-09	CROPPER STEPHEN L Director	3,795	Direct	Acquisition (Non Open Market)	N/A
1-Jun-09	WEIDEMEYER THOMAS H Director	4,216	Direct	Acquisition (Non Open Market)	N/A
1-Jun-09	CALDWELL KIRBYJON H Director	3,795	Direct	Acquisition (Non Open Market)	N/A
1-Jun-09	TATE HERBERT H Director	4,216	Direct	Acquisition (Non Open Market)	N/A
1-Jun-09	LUTERMAN GERALD Director	3,795	Direct	Acquisition (Non Open Market)	N/A
1-Jun-09	HOBBY PAUL W Director	4,216	Direct	Acquisition (Non Open Market)	N/A
1-Jun-09	YOUNG WALTER R JR Director	3,795	Direct	Acquisition (Non Open Market)	N/A
1-Jun-09	COSGROVE HOWARD E Director	6,851	Direct	Acquisition (Non Open Market)	N/A
31-May-09	GUTIERREZ MAURICIO Officer	1,517	Direct	Disposition (Non Open Market)	N/A
24-Apr-09	LUTERMAN GERALD Director	5,200	Direct	Acquisition (Non Open Market)	N/A
23-Mar-09	CALDWELL KIRBYJON H Director	5,003	Direct	Acquisition (Non Open Market)	N/A
18-Feb-09	BRAMNICK MICHAEL R. Officer	4,300	Direct	Statement of Ownership	N/A
3-Feb-09	FREELAND CLINT Officer	1,434	Direct	Disposition (Non Open Market)	N/A
3-Jan-09	HOFFMANN M STEPHEN Officer	338	Direct	Disposition (Non Open Market)	N/A
3-Jan-09	HOWELL KEVIN Officer	1,873	Direct	Disposition (Non Open Market)	N/A
3-Jan-09	INGOLDSBY JAMES J Officer	715	Direct	Disposition (Non Open Market)	N/A
3-Jan-09	FLEXON ROBERT C Officer	2,465	Direct	Disposition (Non Open Market)	N/A
3-Jan-09	CRANE DAVID W Officer	11,654	Direct	Disposition (Non Open Market)	N/A
2-Jan-09	BALIFF JONATHAN Officer	4,100	Direct	Acquisition (Non Open Market)	N/A
2-Jan-09	LIEBELSON MICHAEL S Officer	4,100	Direct	Acquisition (Non Open Market)	N/A
2-Jan-09	GUTIERREZ MAURICIO Officer	4,300	Direct	Acquisition (Non Open Market)	N/A
2-Jan-09	FREELAND CLINT Officer	2,800	Direct	Acquisition (Non Open Market)	N/A
2-Jan-09	BAUDIER JEFFREY M Officer	1,900	Direct	Acquisition (Non Open Market)	N/A
2-Jan-09	MURPHY J ANDREW Officer	4,500	Direct	Acquisition (Non Open Market)	N/A
2-Jan-09	WILSON DENISE Officer	4,300	Direct	Acquisition (Non Open Market)	N/A
2-Jan-09	HOFFMANN M STEPHEN Officer	1,900	Direct	Acquisition (Non Open Market)	N/A
2-Jan-09	INGOLDSBY JAMES J Officer	1,300	Direct	Acquisition (Non Open Market)	N/A
2-Jan-09	FLEXON ROBERT C Officer	14,200	Direct	Acquisition (Non Open Market)	N/A
2-Jan-09	CRANE DAVID W Officer	31,600	Direct	Acquisition (Non Open Market)	N/A
2-Jan-09	RAGAN JOHN W Officer	3,900	Direct	Acquisition (Non Open Market)	N/A
14-Oct-08	MCGINTY KATHLEEN A. Director	4,604	Direct	Acquisition (Non Open Market)	N/A
30-Sep-08	WILSON DENISE Officer	11,700	Direct	Acquisition (Non Open Market)	N/A
9-Sep-08	BALIFF JONATHAN Officer	5,500	Direct	Purchase at $30.99 - $32.2 per share.	$174,000²
9-Sep-08	LIEBELSON MICHAEL S Officer	30,000	Indirect	Purchase at $32.29 - $32.3 per share.	$969,000²
9-Sep-08	GUTIERREZ MAURICIO Officer	3,000	Direct	Purchase at $31.40 per share.	$94,200
9-Sep-08	FREELAND CLINT Officer	2,000	Direct	Purchase at $32.23 - $32.29 per share.	$65,000²
9-Sep-08	MURPHY J ANDREW Officer	1,000	Direct	Purchase at $32.20 per share.	$32,200
5-Sep-08	HOFFMANN M STEPHEN Officer	500	Direct	Purchase at $33.35 per share.	$16,675
2-Sep-08	TATE HERBERT H Director	900	Direct	Acquisition (Non Open Market)	N/A
1-Sep-08	HILL THAD Officer	200	Direct	Automatic Sale at $50.52 per share.	$10,104
1-Aug-08	FREELAND CLINT Officer	669	Direct	Disposition (Non Open Market)	N/A
1-Aug-08	HOFFMANN M STEPHEN Officer	719	Direct	Disposition (Non Open Market)	N/A
1-Aug-08	GUTIERREZ MAURICIO Officer	4,000	Direct	Option Exercise	N/A
1-Aug-08	GUTIERREZ MAURICIO Officer	1,673	Direct	Disposition (Non Open Market)	N/A
1-Aug-08	BAUDIER JEFFREY M Officer	649	Direct	Disposition (Non Open Market)	N/A
1-Aug-08	HOWELL KEVIN Officer	76,091	Direct	Disposition (Non Open Market)	N/A
1-Aug-08	INGOLDSBY JAMES J Officer	8,000	Direct	Option Exercise	N/A
1-Aug-08	INGOLDSBY JAMES J Officer	2,953	Direct	Disposition (Non Open Market)	N/A
1-Aug-08	BREWSTER JOHN P Officer	12,000	Direct	Option Exercise	N/A
1-Aug-08	BREWSTER JOHN P Officer	4,610	Direct	Disposition (Non Open Market)	N/A
1-Aug-08	FLEXON ROBERT C Officer	11,857	Direct	Disposition (Non Open Market)	N/A
2-Jun-08	HANTKE WILLIAM Director	2,585	Direct	Acquisition (Non Open Market)	N/A
2-Jun-08	SCHAUMBURG ANNE C Director	2,405	Direct	Acquisition (Non Open Market)	N/A
2-Jun-08	COBEN LAWRENCE S Director	2,405	Direct	Acquisition (Non Open Market)	N/A
2-Jun-08	CHLEBOWSKI JOHN Director	2,164	Direct	Acquisition (Non Open Market)	N/A
2-Jun-08	CROPPER STEPHEN L Director	2,164	Direct	Acquisition (Non Open Market)	N/A
2-Jun-08	WEIDEMEYER THOMAS H Director	2,405	Direct	Acquisition (Non Open Market)	N/A
2-Jun-08	TATE HERBERT H Director	2,405	Direct	Acquisition (Non Open Market)	N/A
2-Jun-08	HOBBY PAUL W Director	2,405	Direct	Acquisition (Non Open Market)	N/A
2-Jun-08	YOUNG WALTER R JR Director	2,164	Direct	Acquisition (Non Open Market)	N/A
2-Jun-08	COSGROVE HOWARD E Director	3,908	Direct	Acquisition (Non Open Market)	N/A
1-May-08	BALIFF JONATHAN Officer	4,000	Direct	Acquisition (Non Open Market) at $0 per share.	N/A
1-May-08	BALIFF JONATHAN Officer	N/A	Direct	Statement of Ownership	N/A
22-Apr-08	FLEXON ROBERT C Officer	100,000	Direct	Option Exercise at $10.93 per share.	$1,093,000
22-Apr-08	FLEXON ROBERT C Officer	100,000	Direct	Automatic Sale at $45 per share.	$4,500,000
22-Apr-08	CRANE DAVID W Officer	200,000	Direct	Option Exercise at $12.02 per share.	$2,404,000
22-Apr-08	CRANE DAVID W Officer	200,000	Direct	Automatic Sale at $45 per share.	$9,000,000
21-Apr-08	LIEBELSON MICHAEL S Officer	3,800	Direct	Acquisition (Non Open Market) at $0 per share.	N/A
21-Apr-08	LIEBELSON MICHAEL S Officer	N/A	Direct	Statement of Ownership	N/A
18-Apr-08	INGOLDSBY JAMES J Officer	7,000	Direct	Option Exercise at $19.40 per share.	$135,800
18-Apr-08	INGOLDSBY JAMES J Officer	7,000	Direct	Automatic Sale at $44 per share.	$308,000
8-Apr-08	WINN STEVE Officer	8,750	Direct	Option Exercise at $23.98 per share.	$209,825
8-Apr-08	WINN STEVE Officer	8,750	Direct	Automatic Sale at $39.05 - $39.34 per share.	$343,000²
21-Mar-08	INGOLDSBY JAMES J Officer	589	Direct	Disposition (Non Open Market)	N/A
10-Mar-08	WINN STEVE Officer	8,750	Direct	Option Exercise at $23.98 per share.	$209,825
10-Mar-08	WINN STEVE Officer	8,750	Direct	Automatic Sale at $41.96 - $42.25 per share.	$368,000²
3-Mar-08	GUTIERREZ MAURICIO Officer	2,100	Direct	Acquisition (Non Open Market)	N/A
3-Mar-08	GUTIERREZ MAURICIO Officer	14,268	Direct	Statement of Ownership	N/A
3-Mar-08	FREELAND CLINT Officer	2,100	Direct	Acquisition (Non Open Market)	N/A
3-Mar-08	FREELAND CLINT Officer	8,662	Direct	Statement of Ownership	N/A
3-Mar-08	INGOLDSBY JAMES J Officer	15,304	Direct	Statement of Ownership	N/A
3-Mar-08	FLEXON ROBERT C Officer	8,100	Direct	Acquisition (Non Open Market)	N/A
3-Mar-08	INGOLDSBY JAMES J Officer	1,200	Direct	Acquisition (Non Open Market)	N/A
8-Feb-08	WINN STEVE Officer	8,750	Direct	Option Exercise at $23.98 per share.	$209,825
8-Feb-08	WINN STEVE Officer	8,750	Direct	Automatic Sale at $38 - $38.46 per share.	$335,000²
8-Jan-08	WINN STEVE Officer	7,500	Direct	Option Exercise at $15.74 - $23.98 per share.	N/A
8-Jan-08	WINN STEVE Officer	7,500	Direct	Automatic Sale at $40.15 - $40.31 per share.	$302,000²
2-Jan-08	BAUDIER JEFFREY M Officer	1,700	Direct	Acquisition (Non Open Market)	N/A
2-Jan-08	MURPHY J ANDREW Officer	2,600	Direct	Acquisition (Non Open Market)	N/A
2-Jan-08	BURKE CAROLYN JEANNE Officer	600	Direct	Acquisition (Non Open Market)	N/A
2-Jan-08	HOFFMANN M STEPHEN Officer	1,700	Direct	Acquisition (Non Open Market)	N/A
2-Jan-08	HILL THAD Officer	2,400	Direct	Acquisition (Non Open Market)	N/A
2-Jan-08	WINN STEVE Officer	2,400	Direct	Acquisition (Non Open Market)	N/A
2-Jan-08	BREWSTER JOHN P Officer	2,200	Direct	Acquisition (Non Open Market)	N/A
2-Jan-08	FLEXON ROBERT C Officer	5,300	Direct	Acquisition (Non Open Market)	N/A
2-Jan-08	CRANE DAVID W Officer	19,100	Direct	Acquisition (Non Open Market)	N/A
2-Jan-08	RAGAN JOHN W Officer	2,200	Direct	Acquisition (Non Open Market)	N/A
11-Dec-07	WINN STEVE Officer	6,500	Direct	Automatic Sale at $43.10 - $43.61 per share.	$282,000²
7-Dec-07	HOWELL KEVIN Officer	19,456	Direct	Automatic Sale at $43 per share.	$836,608
6-Dec-07	HOWELL KEVIN Officer	5,000	Direct	Automatic Sale at $43 per share.	$215,000
5-Dec-07	WINN STEVE Officer	200	Direct	Disposition (Non Open Market)	N/A

Data provided by EDGAR Online

* = Where indicated, some values are estimates.
¹ = Potential proceeds estimated by the filer.
² = Estimated based on the average of multiple prices reported.
³ = Multiple dates reported. Most recent date shown.

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