Amphastar Pharmaceuticals Insider Trades

AMPH

Track insider trading activity from Amphastar Pharmaceuticals executives and directors. See which insiders are buying and selling AMPH stock.

Trades Last 12 Months

AMPH Price

All Insider Trades for Amphastar Pharmaceuticals

Sort by: Latest Trade Biggest Holding
Insider
Holding Value
Last Transaction
Sale/Purchase
Amount
Price
Current Price
Peters William J Cfo, EVP & TREASURER
Holding Value $4.68M 168,707 shares
Last Trade
Sep 21, 2026 Sale (Open Market)Shares sold on the open market or in a private sale.
$103k 4,139 shares
$25.00
$27.72
Zhou Rong SENIOR Evp, PRODUCTION CENTER
Holding Value $4.69M 169,203 shares
Last Trade
Sep 16, 2026 Sale (Open Market)Shares sold on the open market or in a private sale.
$239k 10,000 shares
$23.94
$27.72
Prins Richard K Director
Holding Value $821k 29,625 shares
Last Trade
Aug 11, 2026 Sale (Open Market)Shares sold on the open market or in a private sale.
$162k 7,973 shares
$20.30
$27.72
Pierce Anthony T Director
Holding Value $461k 16,646 shares
Last Trade
Jul 09, 2026 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$467k 24,532 shares
$19.02
$27.72
Lee Howard Director
Holding Value $4.42M 159,350 shares
Last Trade
Jun 02, 2026 Sale (In-Kind)Shares used to pay exercise costs or tax withholding, or another in-kind transfer tied to compensation.
$14.2k 769 shares
$18.45
$27.72
Deflin Gayle Director
Holding Value $528k 19,057 shares
Last Trade
Jun 01, 2026 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$470k 25,508 shares
$18.42
$27.72
Holding Value $481k 17,365 shares
Last Trade
Jun 01, 2026 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$470k 25,508 shares
$18.42
$27.72
Gerst Diane G. Director
Holding Value $884k 31,899 shares
Last Trade
Jun 01, 2026 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$470k 25,508 shares
$18.42
$27.72
Holding Value $1.04M 37,667 shares
Last Trade
Jun 01, 2026 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$470k 25,508 shares
$18.42
$27.72
Peters William J Cfo, EVP & TREASURER
Holding Value $4.85M 175,063 shares
Last Trade
Mar 15, 2026 Sale (In-Kind)Shares used to pay exercise costs or tax withholding, or another in-kind transfer tied to compensation.
$35.9k 1,973 shares
$18.18
$27.72
Zhang Jack Y. 10% owner, CEO & CHIEF SCIENTIFIC OFFICER
Holding Value $82.9M 2,990,052 shares
Last Trade
Mar 15, 2026 Sale (In-Kind)Shares used to pay exercise costs or tax withholding, or another in-kind transfer tied to compensation.
$231k 12,692 shares
$18.18
$27.72
Liawatidewi Yakob EVP CORP ADMIN CENTER
Holding Value $3.38M 121,892 shares
Last Trade
Mar 15, 2026 Sale (In-Kind)Shares used to pay exercise costs or tax withholding, or another in-kind transfer tied to compensation.
$18.8k 1,033 shares
$18.18
$27.72
Holding Value $1.98M 71,368 shares
Last Trade
Dec 12, 2025 Sale (Open Market)Shares sold on the open market or in a private sale.
$62.9k 2,426 shares
$25.92
$27.72
Prins Richard K Director
Holding Value $1.09M 39,362 shares
Last Trade
Nov 25, 2025 Purchase (Option Exercise)Shares acquired or sold by exercising stock options or converting another derivative security.
$116k 4,179 shares
$27.69
$27.72
Holding Value $818k 29,524 shares
Last Trade
Jun 02, 2025 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$289k 11,402 shares
$25.38
$27.72
Luo Mary Z. 10% owner, Coo,chief Scientist & Chairman
Holding Value $32.1M 1,157,566 shares
Last Trade
Jan 10, 2024 Sale (Open Market)Shares sold on the open market or in a private sale.
$7.17M 131,386 shares
$54.59
$27.72
Maris David Director
Holding Value $531k 19,170 shares
Last Trade
Jun 07, 2021 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$335k 17,182 shares
$19.52
$27.72
Koo Richard Director
Holding Value $7.19M 259,289 shares
Last Trade
Jun 07, 2021 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$335k 17,182 shares
$19.52
$27.72
Shandell Jason B. President And General Counsel
Holding Value $4.97M 179,276 shares
Last Trade
Mar 17, 2020 Sale (In-Kind)Shares used to pay exercise costs or tax withholding, or another in-kind transfer tied to compensation.
$135k 9,299 shares
$14.50
$27.72
Holding Value $203M 7,327,679 shares
Last Trade
Dec 13, 2018 Sale (Open Market)Shares sold on the open market or in a private sale.
$623k 29,689 shares
$20.99
$27.72

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