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
Lee Howard Director
Holding Value $3.09M 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
$19.40
Holding Value $731k 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
$19.40
Deflin Gayle Director
Holding Value $370k 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
$19.40
Holding Value $337k 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
$19.40
Gerst Diane G. Director
Holding Value $619k 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
$19.40
Prins Richard K Director
Holding Value $729k 37,598 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
$19.40
Zhou Rong SENIOR Evp, PRODUCTION CENTER
Holding Value $3.33M 171,554 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.
$22.3k 1,225 shares
$18.18
$19.40
Liawatidewi Yakob EVP CORP ADMIN CENTER
Holding Value $2.36M 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
$19.40
Peters William J Cfo, EVP & TREASURER
Holding Value $3.4M 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
$19.40
Zhang Jack Y. 10% owner, CEO & CHIEF SCIENTIFIC OFFICER
Holding Value $58M 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
$19.40
Holding Value $1.38M 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
$19.40
Prins Richard K Director
Holding Value $0 0 shares
Last Trade
Nov 25, 2025 Sale (Option Exercise)Shares acquired or sold by exercising stock options or converting another derivative security.
$116k 4,179 shares
$27.69
$19.40
Holding Value $573k 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
$19.40
Luo Mary Z. 10% owner, Coo,chief Scientist & Chairman
Holding Value $22.5M 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
$19.40
Maris David Director
Holding Value $372k 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
$19.40
Koo Richard Director
Holding Value $5.03M 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
$19.40
Shandell Jason B. President And General Counsel
Holding Value $3.48M 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
$19.40
Holding Value $142M 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
$19.40
Holding Value $596k 30,706 shares
Last Trade
Dec 10, 2018 Sale (Open Market)Shares sold on the open market or in a private sale.
$1.27M 58,557 shares
$21.72
$19.40
Purchase Marilyn J. Corp. Exec. VP Of Operations
Holding Value $1.41M 72,902 shares
Last Trade
Apr 09, 2015 Purchase (Option Exercise)Shares acquired or sold by exercising stock options or converting another derivative security.
$414k 28,000 shares
$14.80
$19.40

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