![](https://endpts.com/wp-content/uploads/2022/11/Raul-Rodriguez-Rigel-CEO.jpg)
Raul Rodriguez, CEO of Rigel Pharmaceuticals
Rigel churns out another late-stage clinical failure — this time in Covid-19
In the waning days of the Covid-19 pandemic, one penny stock biotech is reporting a close miss for its sole approved drug. But alas, a …
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