Upstream Bio Reports Third Quarter 2024 Financial Results and Recent Business Highlights Upstream reports third quarter 2024 financial results and recent corporate achievements

Upstream Bio Announces Closing of $293 Million Upsized Initial Public Offering, Including Full Exercise of Underwriters’ Option to Purchase Additional Shares Upstream closes $293 million upsized IPO including full exercise of underwriters’ option to purchase additional shares

Upstream Bio Announces Pricing of Upsized Initial Public Offering Upstream Bio announces pricing of upsized initial public offering