Countrywide Financial Corp., the largest U.S. mortgage lender, planned to sell fixed- and floating-rate notes due in five years as soon as Monday, according to a person familiar with the offering.

The securities may have a "poison put" that would let investors sell the bonds back at 101 cents on the dollar if there were a change of control at the Calabasas, Calif., company and a ratings downgrade by Moody's Investors Service Inc., Standard & Poor's Corp., and Fitch Inc., said the person, who asked not to be identified because terms are not set.

Moody's gives the notes its seventh-highest investment grade rating, A3, while S&P rates them one level higher, at A, the person said Monday.

Goldman Sachs Group Inc., JPMorgan Chase & Co., and Lehman Brothers are managing the offering, according to the person.

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