Walter G. Moeling, IV, a partner at the Powell Goldstein LLP law firm in Atlanta, said companies are not usually required to disclose such agreements, which he said are essentially probationary periods. However, if news of an agreement leaks, companies typically either disclose it or more generally announce that they are taking remedial actions in consultation with regulators and other advisers. "It's in their best interest to just get the substance of the matter out there and move on," Mr. Moeling said in an interview Tuesday.