AMPH

Amphastar Pharmaceuticals, Inc.

6 transactions on file, per SEC Form 4 filings.

Zhou Rong

SENIOR EVP, PRODUCTION CENTER · 2026-09-02

Sold

$75K

PRINS RICHARD K

director · 2026-08-11

Sold

$162K

PETERS WILLIAM J

CFO, EVP & TREASURER · 2026-08-07

Option exercise

$100K

PETERS WILLIAM J

CFO, EVP & TREASURER · 2026-08-07

Sold

$184K

Pierce Anthony T

director · 2026-07-09

Award

$317K

Pierce Anthony T

director · 2026-07-09

Award

7,886 sh

Each row links to the underlying SEC filing. Sells are shown for transparency, not as a signal — see the insider trading article for why.

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