(b) An employee is protected against retaliation (as described in paragraph (a) of this section) by a covered person for any lawful act done by the employee:

1. (1) To provide information, cause information to be provided, or otherwise assist in an investigation regarding any conduct which the employee reasonably believes constitutes a violation of 18 U.S.C. 1341, 1343, 1344, or 1348, any rule or regulation of the Securities and Exchange Commission, or any provision of Federal law relating to fraud against shareholders, when the information or assistance is provided to or the investigation is conducted by—

   1. (i) A Federal regulatory or law enforcement agency;
   2. (ii) Any Member of Congress or any committee of Congress; or
   3. (iii) A person with supervisory authority over the employee (or such other person working for the employer who has the authority to investigate, discover, or terminate misconduct); or
2. (2) To file, cause to be filed, testify, participate in, or otherwise assist in a proceeding filed or about to be filed (with any knowledge of the employer) relating to an alleged violation of 18 U.S.C. 1341, 1343, 1344, or 1348, any rule or regulation of the Securities and Exchange Commission, or any provision of Federal law relating to fraud against shareholders.