1. Instead of a traditional IPO, Slack went public through an alternative process called a direct listing.
2. As part of its direct listing, Slack sold some million "registered" and some million "unregistered" shares.
3. What are registered and unregistered shares? I could not find an explanation on Wikipedia.
4. Fiyyaz Pirrani purchased some number of shares, but later complained that Slack had misrepresented something in its declarations before going public. He filed suit against the company.
5. SCOTUS says that because Fiyyaz Pirrani could not tell which of his shares were registered and which were unregistered, he could not prove standing(?)
6. This problem would not have arisen with an IPO (because?). On the other hand, similar doubts will arise with all future direct listings, making investors hesitant to purchase shares in the corresponding companies.
Is this an accurate assessment? What are registered and unregistered shares?