Which of the following is NOT a form of punishment under a Summarized Article 15?

A Summarized Article 15 is a non-judicial means of addressing minor disciplinary infractions within the military. It allows for a streamlined process to maintain good order and discipline. The forms of punishment it includes are designed to be corrective rather than punitive, and they usually aim to encourage improvement in the service member's behavior.

Restriction, extra duty, and reprimand are clearly specified as forms of punishment that can be administered under a Summarized Article 15. Restriction limits a service member's freedom to certain areas (like the barracks), extra duty requires the member to perform additional tasks or duties beyond their normal responsibilities, and a reprimand serves as a formal warning regarding their conduct.

On the other hand, a financial penalty is not a form of punishment allowed under a Summarized Article 15. This form of punishment is generally considered more severe and is typically associated with more formal disciplinary actions. Thus, a financial penalty does not align with the corrective nature of a Summarized Article 15, which focuses on non-monetary measures to address and rectify minor disciplinary issues.