Phieu Phun

Chief Financial Officer at Ionetix

Phieu Phun has worked in a variety of roles in the finance industry. Phieu began their career in 1995 at JPMorgan Chase & Co. as an Associate. Phieu then moved to Merrill Lynch in 2000, where they were a Vice President in Healthcare Investment Banking. In 2003, they joined Lehman Brothers as a Senior Vice President in Healthcare Investment Banking. In 2006, they moved to McKesson Corp. where they held two roles: Vice President, Business Development and Operations, McKesson Private Label Generics, and Vice President, M&A. In 2017, they joined Proteus Digital Health, Inc. as Vice President, Head of Corporate Development & Strategy. Finally, in 2019, they joined Vaxcyte as Executive Director, Head of Finance, and in 2022, they became Chief Financial Officer of Ionetix Corporation.

Phieu Phun attended San Francisco University High School from 1986 to 1990, where they completed a College/University Preparatory and Advanced High School/Secondary Diploma Program. Phieu then went on to pursue a BA in International Relations/Economics at the University of California, Davis from 1990 to 1995.


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  • Chief Financial Officer

    April, 2022 - present

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