Bill Ackman donates $400 million worth of Pershing Square stock to help fund a new brain research and treatment center in Manhattan, according to reports. The announcement ties the initiative to the family’s personal experience with serious brain illness.

Quartz and Seeking Alpha both describe the donation as a major funding step for a neuroscience and longevity-related institute. Quartz adds that the proposed center is inspired by Ackman’s daughter, who suffered a brain hemorrhage. Other outlets emphasize the scale of the donation through Pershing Square shares and the plan to use the proceeds to establish the new facility. Details on governance, timelines, and specific scientific priorities are not fully outlined across the excerpts provided.

Overall, the accounts converge on the donation amount, the funding source (Pershing Square stock), and the goal of supporting a new Manhattan brain research center, while differing mainly in how much they highlight the personal motivation behind the project.