1. Corporate Officers - D
2. Duffey John M

Insider Trading History of Duffey John M

The following table details the insider trading activities (stock purchases, stock sales, and stock option exercises) by Duffey John M since 2006. The trader's CIK number is 1205656. At the time of the last reporting, Duffey John M was the Senior Vice Presiden of Six Flags Entertainment Corp. (stock ticker symbol SIX). Also see all insider trading activities at Six Flags Entertainment Corp.

Note that in the past DUFFEY JOHN M also reported insider trading activities as an insider of the following companies:

Yearly summary of insider trading at Dade Behring Holdings Inc (DADE) by Duffey John M

		Insider Buying		Insider Sales		Option Exercises
Year	Symbol	Shares	Value	Shares	Value	Shares	Value
2006	DADE	0	$0	140,000	$5,618,100	140,000	$1,076,399

Yearly summary of insider trading at Six Flags Entertainment Corp (SIX) by Duffey John M

		Insider Buying		Insider Sales		Option Exercises
Year	Symbol	Shares	Value	Shares	Value	Shares	Value
2016	SIX	25,000	$1,498,200	0	$0	146,960	$1,469,600
2015	SIX	0	$0	204,106	$10,252,971	153,040	$1,530,400
2012	SIX	0	$0	0	$0	168,000	$3,993,984
2011	SIX	28,000	$1,679,636	0	$0	0	$0

Insider trading activities at 2 companies by Duffey John M:

1. Dade Behring Holdings Inc (DADE)

2. Six Flags Entertainment Corp (SIX)

Table 1. Insider trading of Dade Behring Holdings Inc (DADE) by Duffey John M

Trade Date	Symbol	Trade Type	Shares	Price ($)	Value ($)
2006-12-05	DADE	Option Ex	90,000	7.36	662,400
2006-12-05	DADE	Sale	90,000	40.00	3,600,000
2006-01-03	DADE	Option Ex	50,000	8.28	413,999
2006-01-03	DADE	Sale	50,000	40.36	2,018,100

Table 2. Insider trading of Six Flags Entertainment Corp (SIX) by Duffey John M

Trade Date	Symbol	Trade Type	Shares	Price ($)	Value ($)
2016-12-22	SIX	Buy	25,000	59.93	1,498,200
2016-08-31	SIX	Option Ex	146,960	10.00	1,469,600
2015-10-29	SIX	Option Ex	3,040	10.00	30,400
2015-10-28	SIX	Sale	150,000	51.60	7,740,749
2015-10-29	SIX	Sale	3,040	52.00	158,080
2015-10-28	SIX	Option Ex	150,000	10.00	1,500,000
2015-02-20	SIX	Sale	51,066	46.10	2,354,142
2012-10-24	SIX	Option Ex	93,000	26.81	2,493,609
2012-02-13	SIX	Option Ex	75,000	20.00	1,500,375
2011-02-25	SIX	Buy	28,000	59.99	1,679,636

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 Duffey John M (Senior Vice Presiden of Six Flags Entertainment Corp at the time of this reporting) see the Securities and Exchange Commission (SEC) website.

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