01:16 PM EDT, 10/11/2024 (MT Newswires) -- Upstream Bio (UPB) shares jumped 29% in recent Friday trading in their Nasdaq debut.

On Thursday, the company riced its initial public offering of 15 million common shares at $17 apiece. The stock rose as high as $21.99 earlier Friday.

Intraday trading volume topped 1.45 million shares.

Upstream Bio, a clinical-stage biotechnology company, is developing treatments for inflammatory diseases with a focus on severe respiratory disorders.

Price: 21.92, Change: +4.92, Percent Change: +28.94