I think it's saying that Nori Gerardo Lietz's analysis paper was unpublished.

The conversion price of the convertible debt is the only that the wasn't disclosed in teh S-1. It says it did convert to a G-1 prefered stock, but it's unclear what the value of those shares are.

It's on Page 115.

https://www.sec.gov/Archives/edgar/data/1533523/000119312519...

>"Convertible Note and Warrant Agreements

In July 2018, we entered into an agreement for the issuance of a convertible note with SoftBank Group Corp. for a commitment in an aggregate amount of $1.0 billion (as amended in January 2019, the “2018 convertible note”). On August 31, 2018, we drew down on the full $1.0 billion commitment. On July 15, 2019, the 2018 convertible note was converted into 9,090,909 shares of Series G-1 preferred stock."