TaxBandits Knowledge Base

Who needs to file Form 3921?

Form 3921 must be submitted by businesses whose shareholders exercised their ISOs in the previous calendar year. Let's say, for example, that in 2019, a company provided ISOs to one of its shareholder, and he used some or all of his options in 2022.

This would imply that the company would need to submit form 3921 before the due date in 2022. This document would inform the IRS of the amount of stock transferred to Nick as a consequence of the exercise. As an employer, you can choose TaxBandits to e-file Form 3921 for 2022.