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Home > Insider Trading > Amphastar Pharmaceuticals Inc.

Amphastar Pharmaceuticals Inc. (AMPH)

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Latest 13D & 13G Filings
Company Symbol Filed By Filing Date Filing
Amphastar Pharmaceuticals Inc.
AMPH
 Dimensional Fund Advisors LP 2026-07-14
13G Filing
Amphastar Pharmaceuticals Inc.
AMPH
 The Vanguard Group 2026-03-26
13G Filing
Amphastar Pharmaceuticals Inc.
AMPH
 Jack Y. Zhang 2025-02-07
13G Filing
Amphastar Pharmaceuticals Inc.
AMPH
 Federated Hermes, Inc. 2024-03-06
13G Filing
Amphastar Pharmaceuticals Inc.
AMPH
 Vanguard Group Inc 2024-02-13
13G Filing
Insider Monkey Quarterly Strategy
+599.2% Insider Monkey Quarterly Strategy
+227% Benchmark50% S&P 500 ETF and 50% Russell 2000 ETF
500%
250%
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Returns since its inception in May 2014 (through June 2, 2026)

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