DOW JONES NEWSWIRES 
 

Ambac Financial Group Inc. (ABK) appointed Gregory Raab chief risk officer to succeed David Wallis, who was promoted to president and chief executive of the nation's second-largest bond insurer in October.

The appointment comes as the industry has been reeling from a foray into insuring mortgage-backed securities, which have plummeted along with the housing market and increasing defaults and delinquencies on home loans.

In his role with Ambac, Raab will manage Ambac's $430 billion of net insured par outstanding and make key decisions involving risk management and loss mitigation. Ambac has been hit with financial-guarantee losses and provisions soared in the fourth quarter.

Raab, who has 20 years of experience in strategy development, previously worked as a chief risk officer for General Electric Co.'s (GE) structured finance, public finance and capital markets group.

Last week, the company reported its fourth-quarter net loss narrowed on smaller write-downs and improved revenue figures. Ambac has focused on trying to regain its footing and in a bid to conserve cash, the company in December eliminated its regular quarterly dividend of 1 cent, saving $11.5 million in the process.

Shares of Ambac were up 3 cents, or 5.3% to 60 cents in after-hours trading. The company's stock has lost 95% of its value from its 52-week high in April.

- By John Kell, Dow Jones Newswires; 201-938-5285; john.kell@dowjones.com