Penalty for selling stock not directly owned by seller

It shall be unlawful for any such beneficial owner, director or officer, directly or indirectly, to sell any equity security of such company if the person selling the security or the person’s principal does not own the security sold, or if owning the security, does not deliver it against such sale within twenty days thereafter, or does not within five days after such sale deposit it in the mails or other usual channels of transportation; but no person shall be deemed to have violated this section if the person proves that notwithstanding the exercise of good faith the person was unable to make such delivery or deposit within such time, or that to do so would cause undue inconvenience or expense.