(2) Omission. Except as otherwise expressly provided, whenever a duty to act is imposed upon an organization by a statute or regulation thereunder, any agent of the organization having primary responsibility for the subject matter of the duty is legally accountable for an omission to perform the required act to the same extent as if the duty were imposed directly upon himself.
(3) Accomplice of Organization. When an individual is convicted of an offense as an accomplice of an organization, he is subject to the sentence authorized when a natural person is convicted of that offense.
(4) Default in Supervision. A person responsible for supervising relevant activities of an organization is guilty of an offense if he manifests his assent to the commission of an offense for which the organization may be convicted by his willful default in supervision within the range of that responsibility which contributes to the occurrence of that offense. Conviction under this subsection shall be of an offense of the same class as the offense for which the organization may be convicted, except that if the latter offense is a felony, conviction under this subsection shall be for a Class A misdemeanor.