I have a new client who set up an S Corp in January 2018 - owns 100%.

Now, in May, he decides to add a shareholder. They will each own 50% of the S Corporation. Since the original Form 2553 was filed back in January 2018 with just the one shareholder's consent/authorization. Does a new Form 2553 need to be filed so that the new shareholder can consent?

Any help/guidance would be appreciated.