An 8K filing basically is Leo making himself and the company responsible for its content, which would be the content of the PR. In a sense it legally codifies what was in the PR, and it also may imply that the added data may be a material event affecting company value and share price.
This 8K May come under either or both of the following items:
Item 2.02 Results of Operations and Financial Condition Item 8.01 Other Events (The registrant can use this Item to report events that are not specifically called for by Form 8-K, that the registrant considers to be of importance to security holders.) https://www.sec.gov/files/form8-k.pdf
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