top of page

Dr. Arsani William, MD, MBA

Managing Partner / Chief Investment Officer

Dr. William serves as the firm’s Chief Investment Office & Managing Partner, overseeing portfolio construction, risk management, and strategy across public and private markets.


Prior to founding Logos, Dr. William was an investment professional at Farallon Capital Management, where he helped drive the expansion of the firm’s biopharma portfolio and investment framework.


He previously trained as a physician and completed his MD at Harvard Medical School as a Gerald S. Foster Scholar, his MBA at Stanford Graduate School of Business, and his BS with Honors in Biology at Stanford University.


Dr. William serves on multiple private biotechnology boards and is an active member of the Bay Area biopharma community.


Dr. Arsani William, MD, MBA

+1 (415) 801-4660 or +1 (415) 801-4670

1 Letterman Drive, Building C, Suite C3-350, San Francisco, CA 94129

This website is for informational purposes only and does not constitute an offer to sell, a solicitation to buy, or a recommendation for any security; nor does it constitute an offer to provide investment advisory or other services by Logos Global Management LP (“Logos Capital”). Nothing contained on the website constitutes investment advice or offers any opinion with respect to the suitability of any security, and the views expressed on this website should not be taken as advice to buy, sell, or hold any security or as an endorsement of any security or company. In preparing the information contained in this website, Logos Capital has not taken into account the investment needs, objectives, and financial circumstances of any particular investor, and investments and companies referenced may not be suitable for all investors. Any views expressed on this website by Logos Capital were prepared based upon information, believed to be reliable, available to it at the time such views were written. Logos Capital makes no guarantees as to their accuracy or completeness. All information is subject to change and may quickly become unreliable for various reasons, including changes in market conditions or economic circumstances. By accessing this website, the reader agrees that he/she not copy, reproduce, republish, upload, post, transmit, alter, or distribute in any way material from this website in any manner inconsistent with the purposes for which it is offered without the prior written consent of Logos Capital.

© 2025 Logos Capital

bottom of page