Parabilis Medicines priced its upsized IPO at $20 per share, raising $670 million above its expected range, with a $75 million Regeneron private placement.

The largest-ever new stock sale for a venture-backed biotech company extends a streak of large IPOs in 2026 that’s now resulted in 12 drug startups securing more than $4.1 billion…

Parabilis Medicines prices a $670M IPO — the biggest biotech Nasdaq debut ever — to fund its experimental desmoid-tumor drug zolucatetide.