More major investors disclose stakes in Sionna Therapeutics $SION

We're learning daily about the list of major investors in new IPO Sionna Therapeutics $SION (market cap: $852m). We wrote yesterday about big hitters Orbimed and Viking (Link). Now a filing from RA Capital (early in Moderna) disclosing a 23.7% stake (SEC filing). It's likely we'll hear from the company soon with an earnings announcement. In the meantime, here's a look at the company prior to their recent IPO: https://seekingalpha.com/article/4751851-sionna-therapeutics-seeks-100-million-ipo-for-cystic-fibrosis-treatments