1. Company Directors - N
2. Nelson William C

Insider Trading History of Nelson William C

The following table details the insider trading activities (stock purchases, stock sales, and stock option exercises) by Nelson William C since 2006. The trader's CIK number is 1181860. At the time of the last reporting, Nelson William C was the Director of Dst Systems Inc. (stock ticker symbol DST). Also see all insider trading activities at Dst Systems Inc.

Note that in the past NELSON WILLIAM C also reported insider trading activities as an insider of the following companies:

Yearly summary of insider trading at Great Plains Energy Inc (GXP) by Nelson William C

		Insider Buying		Insider Sales		Option Exercises
Year	Symbol	Shares	Value	Shares	Value	Shares	Value
2008	GXP	1,000	$17,720	0	$0	0	$0
2007	GXP	1,587	$49,974	0	$0	0	$0
2006	GXP	1,406	$35,005	0	$0	0	$0

Yearly summary of insider trading at Dst Systems Inc (DST) by Nelson William C

		Insider Buying		Insider Sales		Option Exercises
Year	Symbol	Shares	Value	Shares	Value	Shares	Value
2012	DST	0	$0	14,270	$751,458	14,270	$679,708
2011	DST	0	$0	9,700	$465,309	9,700	$443,775
2010	DST	0	$0	7,200	$293,976	8,000	$292,504
2009	DST	0	$0	6,966	$264,241	8,000	$216,872
2008	DST	0	$0	5,882	$352,955	8,000	$220,248
2007	DST	0	$0	794	$57,850	794	$12,430

Insider trading activities at 2 companies by Nelson William C:

1. Great Plains Energy Inc (GXP)

2. Dst Systems Inc (DST)

Table 1. Insider trading of Great Plains Energy Inc (GXP) by Nelson William C

Trade Date	Symbol	Trade Type	Shares	Price ($)	Value ($)
2008-11-13	GXP	Buy	1,000	17.72	17,720
2007-01-22	GXP	Buy	1,587	31.49	49,974
2006-01-23	GXP	Buy	201	.00	0
2006-01-20	GXP	Buy	1,205	29.05	35,005

Table 2. Insider trading of Dst Systems Inc (DST) by Nelson William C

Trade Date	Symbol	Trade Type	Shares	Price ($)	Value ($)
2012-05-10	DST	Option Ex	14,270	47.63	679,708
2012-05-14	DST	Sale	14,270	52.66	751,458
2011-05-11	DST	Sale	9,700	47.97	465,309
2011-05-05	DST	Option Ex	9,700	45.75	443,775
2010-05-06	DST	Option Ex	8,000	36.56	292,504
2010-05-06	DST	Sale	7,200	40.83	293,976
2009-05-08	DST	Option Ex	8,000	27.11	216,872
2009-05-08	DST	Sale	6,966	37.93	264,241
2008-05-12	DST	Option Ex	8,000	27.53	220,248
2008-05-12	DST	Sale	5,882	60.01	352,955
2007-02-14	DST	Option Ex	794	15.66	12,430
2007-02-15	DST	Sale	794	72.86	57,850

Insider trading activities including stock purchases, stock sales, and option exercises listed in the above table cannot be completely guaranteed as to their accuracy. For more information regarding the trades made by Nelson William C (Director of Dst Systems Inc at the time of this reporting) see the Securities and Exchange Commission (SEC) website.

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