Anworth Mortgage Asset Corporation (NYSE: ANH) announced today that, in accordance with the terms of Anworth’s 6.25% Series B Cumulative Convertible Preferred Stock, or Series B Preferred Stock, the conversion rate of the Series B Preferred Stock has increased from 3.6075 shares of Anworth’s common stock to 3.6714 shares of its common stock effective December 28, 2011. As previously announced on December 15, 2011, the board of directors declared a quarterly common stock dividend of $0.21 per share, which is payable on January 27, 2012 to holders of record of common stock as of the close of business on December 27, 2011. When Anworth pays a cash dividend during any quarterly fiscal period to its common stockholders in an amount that results in an annualized common stock dividend yield greater than 6.25% (the dividend yield on the Series B Preferred Stock), the conversion rate on the Series B Preferred Stock is adjusted based on a formula specified in the Articles Supplementary Establishing and Fixing the Rights and Preferences of the Series B Preferred Stock (and also available on the “Series B Pfd. Stock Conversion” page of Anworth’s web site at http://www.anworth.com). As a result of this dividend, the conversion rate has increased from 3.6075 shares of Anworth’s common stock to 3.6714 shares of its common stock effective December 28, 2011. About Anworth Mortgage Asset Corporation Anworth is a mortgage real estate investment trust which invests primarily in securities guaranteed by the U.S. Government, such as Ginnie Mae, or guaranteed by federally sponsored enterprises, such as Fannie Mae or Freddie Mac. Anworth generates income for distribution to shareholders primarily based on the difference between the yield on its mortgage assets and the cost of its borrowings. The Company’s common stock is traded on the New York Stock Exchange under the symbol ANH.