JACK YONGFENG ZHANG - Corporate Board Profile

Amphastar Pharmaceuticals, Inc.

Filing Date	Source Excerpt
2015-04-08	Jack Yongfeng Zhang, Ph.D. co-founded our company in 1996 and has served as our Chief Executive Officer and a member of our board of directors since our inception and as our President from 1996 until June 2013. Dr. Zhang has also served as our Chief Scientific Officer since 2005. Dr. Zhang co-founded Applied Physics & Chemistry Laboratories, Inc., or APCL, a full service chemical analytical laboratory, in May 1989, where he held the position of President until October 2002. Dr. Zhang is named as the inventor on several U.S. and foreign patents. He received a Ph.D. in chemistry from the State University of New York at Stony Brook and was a Post Doctoral Research Associate at the California Institute of Technology.
2016-04-22	Dr. Zhang received a Ph.D. in chemistry from the State University of New York at Stony Brook and was a Post Doctoral Research Associate at the California Institute of Technology.
2017-04-21	Dr. Zhang received a Ph.D. in chemistry from the State University of New York at Stony Brook and was a Post Doctoral Research Associate at the California Institute of Technology.
2018-04-18	Dr. Zhang received a Ph.D. in chemistry from the State University of New York at Stony Brook and was a Post Doctoral Research Associate at the California Institute of Technology.
2019-04-18	Dr. Zhang received a Ph.D. in chemistry from the State University of New York at Stony Brook and was a Post Doctoral Research Associate at the California Institute of Technology.
2020-04-15	Jack Yongfeng Zhang, Ph.D. co-founded our Company in 1996 and has served as our Chief Executive Officer and a member of our board of directors since our inception. He received a Ph.D. in chemistry from the State University of New York at Stony Brook and was a Post Doctoral Research Associate at the California Institute of Technology.
2021-04-14	Dr. Zhang received a Ph.D. in chemistry from the State University of New York at Stony Brook and was a Post-Doctoral Research Associate at the California Institute of Technology.
2022-04-14	Dr. Zhang co-founded our Company in 1996 has served as our Chief Executive Officer and a member of our Board of Directors since our inception and was re-appointed as our President in April 2020, after serving as President from 1996 until June 2013. Dr. Zhang has also served as our Chief Scientific Officer since 2005. Dr. Zhang co-founded APCL, a full service chemical analytical laboratory, in May 1989, where he held the position of President until October 2002. Dr. Zhang is named as the inventor on several U.S. and foreign patents. He received a Ph.D. in chemistry from the State University of New York at Stony Brook and was a Post-Doctoral Research Associate at the California Institute of Technology.
2023-04-14	Dr. Zhang received a Ph.D. in chemistry from the State University of New York at Stony Brook and was a Post-Doctoral Research Associate at the California Institute of Technology.
2024-04-12	Dr. Zhang received a Ph.D. in chemistry from the State University of New York at Stony Brook and was a Post-Doctoral Research Associate at the California Institute of Technology.

Data sourced from SEC filings. Last updated: 2026-03-05