Gilead agreed to buy US biotech Arcellx in a deal with an equity value of up to $7.8 billion https://www.bloomberg.com/news/articles/2026-02-23/gilead-to-buy-biotech-arcellx-in-deal-worth-up-to-7-8-billion?taid=699c3ae9f718110001863903&utm_campaign=trueanthem&utm_content=business&utm_medium=social&utm_source=twitter