This is not true. Sort of. I assume you meant to say if the results are poor, the data must be released in a relatively short period of time from when the company receives those results.
"Poor" is subjective. What one person thinks is poor another might think is terrific. Just look at the discrepancy in the past data releases between shorts and longs and how the data is interpreted.
Moreover, the only time something has to be released immediately is when there is a material impact. So if Anavex were in a Phase 3 trial and the data were bad and the trial was going to end prematurely, or if they received notice from the FDA that the drug was not going to be approved, that is material.
However, Anavex is in the middle of a P2A extension. The data it receives has little bearing on the future of the company and the plans for P3.
The trial is adaptive. Anavex has some data. They also have a regulatory and compliance officer. If Anavex were required to release data, it would have. But they have not, because the company is not required to release the results of interim data that has no material effect on the financial well-being of the company.