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Stock Trading History of Wallis David W

The following table details the trading activities (stock purchases, stock sales, and stock option exercises) reported to the Securities and Exchange Commission (SEC) by insider Wallis David W since year 2005. The trader's CIK number is 1332610. At the time of this reporting, Wallis David W is the Senior Managing Director of Ambac Financial Group Inc . (stock ticker symbol ABK). See this page for all insider trading activities at Ambac Financial Group Inc .

Stock purchases, sales, and option exercises reported by insider *Wallis David W* since 2005.
Trade Date	Symbol	Company Name (Issuer)	Trade Type	Shares	Price ($)	Value ($)
2008-03-07	ABK	Ambac Financial Group Inc	Purchase	6,250	6.75	42,187
2007-10-30	ABK	Ambac Financial Group Inc	Purchase	2,500	39.99	99,975
2007-04-27	ABK	Ambac Financial Group Inc	Option Exercise	7,500	48.66	364,950
2007-04-27	ABK	Ambac Financial Group Inc	Sale	6,454	92.73	598,466

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 Wallis David W (Senior Managing Director of Ambac Financial Group Inc at the time of this reporting) see the Securities and Exchange Commission (SEC) website.