To hold the individual owner-defendant liable for the corporation's actions, the plaintiff must show that (1) the individual owner exercised complete domination over the corporation with respect to the transaction attacked, and (2) that this domination was used to commit a fraud or wrong against the plaintiff, resulting in plaintiff's injury. It is a heavy burden, and the fact that the individual defendant is the corporation's sole shareholder is insufficient.
Kahan Jewelry Corp. v. Coin Dealer of 47th St., Inc., NY Slip Op 05001 (1st Dep't June 20, 2019)
Here is the decision.