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Biopharma & Life Sciences

Amphastar Pharmaceuticals Executive Compensation (FY25)

AMPH · Executive and director compensation, fiscal 2023 to 2025
Data as of September 7, 2026Latest filing (8-K): June 3, 2026
267 figures on this page: 265 cited to the filing that reported them, 2 calculated from figures it prints. See the citations
Jack Yongfeng Zhang was paid $8,309,350 in total compensation as Chief Executive Officer, President, Chief Scientific Officer and Director for fiscal 2025, and for fiscal 2025, the company reported a chief executive pay ratio of 135:1, against median employee compensation of $61,658. Shareholders recorded 91.8% support for the say-on-pay proposal at the meeting held June 1, 2026 for fiscal 2025. Companies named in the disclosed peer group include ACADIA Pharmaceuticals, Inc., Alnylam Pharmaceuticals, Inc., Amicus Therapeutics, Inc., ANI Pharmaceuticals, Inc. and Collegium Pharmaceuticals, Inc., among others. For fiscal 2025, the company reported 5 named executive officers.
Chief executive, fiscal 2025
◇
Jack Yongfeng Zhang
Latest say-on-pay support
=
June 1, 2026
Chief executive pay ratio
◇
To the median employee
What changed from fiscal 2024 to fiscal 2025
The figures that moved, and by how much. Analysis of these figures is part of the Velarion platform.
Chief executive of record: Jack Zhang → Jack Yongfeng Zhang
CEO pay ratio: 94:1 → 135:1 (43.6% higher)

Frequently asked questions

Answers drawn from the data on this page.
Who is Amphastar Pharmaceuticals' chief executive and what were they paid?
Jack Yongfeng Zhang was paid $8,309,350 in total compensation as Chief Executive Officer, President, Chief Scientific Officer and Director for fiscal 2025.
What was Amphastar Pharmaceuticals' say-on-pay result?
Shareholders recorded 91.8% support for the say-on-pay proposal at the meeting held June 1, 2026 for fiscal 2025.
Which companies are in Amphastar Pharmaceuticals' peer group?
Companies named in the disclosed peer group include ACADIA Pharmaceuticals, Inc., Alnylam Pharmaceuticals, Inc., Amicus Therapeutics, Inc., ANI Pharmaceuticals, Inc. and Collegium Pharmaceuticals, Inc., among others.
What is Amphastar Pharmaceuticals' chief executive pay ratio?
For fiscal 2025, the company reported a chief executive pay ratio of 135:1, against median employee compensation of $61,658.

Executive compensation

Every element reported for each named executive officer, by fiscal year.
Fiscal 2023
OfficerSalaryBonusStock awardsOption awardsNon-equity incentivePension and deferred earningsAll other compensationTotal
Jack Zhang
Chief Executive Officer, President, Chief Scientific Officer and Director
◇◇◇◇◇—◇◇
Mary Luo
Chief Operating Officer, Chief Scientist and Chairman
◇◇◇◇◇—◇◇
William Peters
Chief Financial Officer, Executive Vice President of Finance, Treasurer, President of International Medication Systems, Limited, and Director
◇◇◇◇◇—◇◇
Rong Zhou
Senior Executive Vice President of Production and President of Amphastar Nanjing Pharmaceuticals, Co., Ltd
◇◇◇◇◇—◇◇
Jacob Liawatidewi
Executive Vice President of Sales and Marketing, Executive Vice President of Corporate Administration Center and President of Amphastar France Pharmaceuticals, S.A.S.
◇◇◇◇◇—◇◇
Fiscal 2024
OfficerSalaryBonusStock awardsOption awardsNon-equity incentivePension and deferred earningsAll other compensationTotal
Jack Zhang
Chief Executive Officer, President, Chief Scientific Officer and Director
◇◇◇◇◇—◇◇
Mary Luo
Chief Operating Officer, Chief Scientist and Chairman
◇◇◇◇◇—◇◇
William Peters
Chief Financial Officer, Executive Vice President of Finance, Treasurer, President of International Medication Systems, Limited, and Director
◇◇◇◇◇—◇◇
Rong Zhou
Senior Executive Vice President of Production and President of Amphastar Nanjing Pharmaceuticals, Co., Ltd
◇◇◇◇◇—◇◇
Jacob Liawatidewi
Executive Vice President of Sales and Marketing, Executive Vice President of Corporate Administration Center and President of Amphastar France Pharmaceuticals, S.A.S.
◇◇◇◇◇—◇◇
Fiscal 2025
OfficerSalaryBonusStock awardsOption awardsNon-equity incentivePension and deferred earningsAll other compensationTotal
Jack Yongfeng Zhang
Chief Executive Officer, President, Chief Scientific Officer and Director
◇◇◇◇◇—◇◇
Mary Ziping Luo
Chief Operating Officer, Chief Scientist and Chairman of the Board of Directors
◇◇◇◇◇—◇◇
William Peters
Chief Financial Officer, Executive Vice President of Finance, Treasurer, President of International Medication Systems, Limited, and Director
◇◇◇◇◇—◇◇
Rong Zhou
Senior Executive Vice President of Production Center; Executive Vice President of Scientific Affairs and President of Amphastar Nanjing Pharmaceuticals, Co., Ltd.
◇◇◇◇◇—◇◇
Jacob Liawatidewi
Executive Vice President of Sales and Marketing and Corporate Administration Center, President of Amphastar France Pharmaceuticals, S.A.S., Corporate Secretary and Director
◇◇◇◇◇—◇◇
A dash means the company reported no figure in that column. $0 is shown only where the filing prints a zero. A negative change in pension value is shown but, as the company reports it, not included in the total.

Equity awards granted

Individual awards as disclosed: type, date, unit counts at each level, and grant date value.
Fiscal 2025
OfficerAwardGrant dateThreshold unitsTarget unitsUnits grantedMaximum unitsExercise priceGrant date fair value
Jack Y. ZhangRSU◇——◇——◇
Jack Y. ZhangOPTION◇——◇—◇◇
Jacob LiawatidewiRSU◇——◇——◇
Jacob LiawatidewiOPTION◇——◇—◇◇
Mary Z. LuoOPTION◇——◇—◇◇
Mary Z. LuoRSU◇——◇——◇
Rong ZhouRSU◇——◇——◇
Rong ZhouOPTION◇——◇—◇◇
William J. PetersRSU◇——◇——◇
William J. PetersOPTION◇——◇—◇◇
A dash means the company reported no figure in that column. $0 is shown only where the filing prints a zero. Threshold, target and maximum apply only to performance awards and are never shown for time-based or option awards.

Outstanding awards

Awards still held at fiscal year end.
As disclosed at fiscal 2025 year end
OfficerAwardUnvested unitsMarket value of unvested unitsExercise priceExpires
Jacob LiawatidewiOption◇—◇3/15/32
Option◇—◇3/6/33
RSU◇◇——
RSU◇◇——
RSU◇◇——
RSU◇◇——
Option◇—◇3/10/35
RSU◇◇——
Mary Ziping LuoOption◇—◇3/10/35
Option◇—◇3/4/34
RSU◇◇——
RSU◇◇——
RSU◇◇——
RSU◇◇——
Option◇—◇3/6/33
Option◇—◇3/15/32
Rong ZhouOption◇—◇3/6/33
RSU◇◇——
RSU◇◇——
RSU◇◇——
Option◇—◇3/15/32
RSU◇◇——
Option◇—◇3/4/34
Option◇—◇3/10/35
William PetersOption◇—◇3/6/33
Option◇—◇3/15/32
RSU◇◇——
Option◇—◇3/10/35
RSU◇◇——
RSU◇◇——
Option◇—◇3/4/34
RSU◇◇——
Jack Yongfeng ZhangOption◇—◇3/4/34
Option◇—◇3/10/35
RSU◇◇——
RSU◇◇——
Option◇—◇3/15/32
Option◇—◇3/6/33
RSU◇◇——
RSU◇◇——
A dash means the company reported no figure in that column. $0 is shown only where the filing prints a zero.

Director compensation

What each non-employee director was paid.
Fiscal 2025
DirectorFees earned in cashStock awardsOption awardsNon-equity incentivePension and deferred earningsAll other compensationTotal
Richard Prins
Lead independent director
◇◇◇———◇
Gayle Deflin
◇◇◇———◇
Howard Lee
◇◇◇———◇
Michael A. Zasloff
◇◇◇———◇
Diane Gerst
◇◇◇———◇
Floyd F. Petersen
◇◇◇———◇
David Gaugh
◇◇◇———◇
William J. Peters, Jacob Liawatidewi, Mary Ziping Luo and Jack Yongfeng Zhang served on the board in fiscal 2025 and received no compensation for board service. Executive directors are typically paid through their executive roles, shown above.
A dash means the company reported no figure in that column. $0 is shown only where the filing prints a zero.

Director fee schedule

The standing retainers and premiums the board pays, as published.
Board cash retainer◇
Board equity retainer◇
Total board retainer◇
Board chair premium◇
Lead independent director premium◇
Audit committee member◇
Compensation committee member◇
Nominating and governance member◇

Disclosed peer group

The companies this board named as its compensation comparison group. The list is disclosure; the comparison is analysis.
Fiscal 2025
  • ACADIA Pharmaceuticals, Inc. ACAD
  • Alnylam Pharmaceuticals, Inc. ALNY
  • Amicus Therapeutics, Inc. FOLD
  • ANI Pharmaceuticals, Inc. ANIP
  • Collegium Pharmaceuticals, Inc. COLL
  • Corcept Therapeutics Inc. CORT
  • Emergent BioSolutions Inc. EBS
  • Exelixis, Inc. EXEL
  • Halozyme Therapeutics, Inc. HALO
  • Ionis Pharmaceuticals, Inc. IONS
  • Ironwood Pharmaceuticals, Inc. IRWD
  • Pacira BioSciences, Inc. PCRX
  • Prestige Consumer Healthcare, Inc. PBH
  • PTC Therapeutics, Inc. PTCT
  • Sarepta Therapeutics, Inc. SRPT
  • Supernus Pharmaceuticals, Inc. SUPN

Say-on-pay history

Shareholder support for the compensation program, by year.
YearMeetingSupportVotes forVotes againstAbstentions
2025June 1, 2026=◇◇◇
2024June 2, 2025=◇◇◇

Chief executive pay ratio

As calculated and reported by the company.
Ratio
◇
Median employee compensation
◇
Chief executive total compensation
◇
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What this page does not include

Everything above is a fact Amphastar Pharmaceuticals disclosed, and it is free. Everything below is our analysis of those facts, and it is not.
Peer benchmarking
Where Amphastar Pharmaceuticals sits against its disclosed peers — percentile position by role and by pay element, and the ranking behind it. The disclosed peer group is free; comparisons across it are part of the Velarion platform.
Executive Compensation Report — $1,500
Written compensation analysis
A read of the pay program as designed and as paid: incentive structure, goal rigor, the alignment between the committee's stated philosophy and what the numbers show.
Executive Compensation Report — $1,500
Board and governance analysis
Committee composition, independence, director pay positioning, and the governance provisions read together rather than listed.
Board Governance Report — $1,200
Realizable pay
What the awards above are actually worth today against what they were valued at on grant, and what the gap says about the pay-for-performance link.
Velarion Intelligence
Adviser switching and vote outcomes
Two datasets covering compensation-adviser changes and what followed a contested vote. Both are part of the Velarion platform.
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Citations

Every figure on this page is cited to the document that reported it. Select any figure to see its citation.
267 figures on this page: 265 cited to the filing that reported them, 2 calculated from figures it prints.
265 cited to the filing
2 calculated from the filing

Documents cited

  1. 0001297184-26-000038
    Item 5.07 Submission of Matters to a Vote of Security Holders
  2. 0001297184-26-000023
    2025 Grants of Plan-Based Awards · CEO Pay Ratio · Director Compensation for 2025 · Fiscal 2025 Summary Compensation Table · and 2 more sections
  3. 0001297184-25-000036
    Item 5.07 Submission of Matters to a Vote of Security Holders
  4. 0001297184-25-000018
    Fiscal 2024 Summary Compensation Table
  5. 0001297184-24-000019
    Fiscal 2023 Summary Compensation Table
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Velarion, “Amphastar Pharmaceuticals executive compensation, FY2023–FY2025.” https://intel.velarion.ai/comp/AMPH (accessed 2026).
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Biopharma & Life Sciences rankings

Chief executive pay — Biopharma & Life SciencesCEO pay ratio — Biopharma & Life SciencesSay-on-pay support — Biopharma & Life Sciences

Peers Amphastar Pharmaceuticals discloses

The companies named in AMPH's own disclosed peer group.

ACADIA Pharmaceuticals, Inc.Alnylam Pharmaceuticals, Inc.Amicus Therapeutics, Inc.Emergent BioSolutions Inc.Exelixis, Inc.Halozyme Therapeutics, Inc.Ionis Pharmaceuticals, Inc.Ironwood Pharmaceuticals, Inc.PTC Therapeutics, Inc.Sarepta Therapeutics, Inc.Supernus Pharmaceuticals, Inc.

Terms on this page

Say-on-Pay VoteCEO Pay RatioMedian Employee CompensationAll companies
Cite this data
APA
Velarion Company Intelligence. (2026). Velarion database: executive and board compensation data (Version 2026Q3) [Data set]. Zenodo. https://doi.org/10.5281/zenodo.22283854
BibTeX
@misc{velarionData2026,
  author = {{Velarion Company Intelligence}},
  title = {Velarion database: executive and board compensation data},
  year = {2026},
  version = {2026Q3},
  doi = {10.5281/zenodo.22283854},
  publisher = {Zenodo},
  url = {https://doi.org/10.5281/zenodo.22283854}
}
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