Amphastar Pharmaceuticals, Inc. (AMPH) — Insider Trading
Insider trading activity for Amphastar Pharmaceuticals, Inc. sourced from SEC EDGAR Form 4 filings.
Overview
- Total insider trades: 21
- Last trade date: Sep 23, 2026
- Ticker: AMPH
Top Insiders
- Deflin Gayle — 2 trades, buy: $0, sell: $0
- ZASLOFF MICHAEL A — 2 trades, buy: $0, sell: $0
- Gerst Diane G. — 2 trades, buy: $0, sell: $0
- PRINS RICHARD K — 3 trades, buy: $0, sell: $0
- Gaugh David Russell — 2 trades, buy: $0, sell: $0
Recent Trades
| Date | Insider | Ticker / Company |
Type | Shares | Value |
| Sep 21, 2026 |
PETERS WILLIAM J |
AMPH Amphastar Pharmaceuticals, Inc. |
SELL |
4,139 |
$103K |
| Sep 16, 2026 |
Zhou Rong |
AMPH Amphastar Pharmaceuticals, Inc. |
OTHER |
10,000 |
N/A |
| Sep 16, 2026 |
Zhou Rong |
AMPH Amphastar Pharmaceuticals, Inc. |
SELL |
10,000 |
$239K |
| Sep 16, 2026 |
Zhou Rong |
AMPH Amphastar Pharmaceuticals, Inc. |
OTHER |
10,000 |
$134K |
| Sep 2, 2026 |
Zhou Rong |
AAMPH AAMPH |
SELL |
3,187 |
$75K |
| Sep 1, 2026 |
Rong Zhou |
AAMPH AAMPH |
SELL |
13,187 |
$290K |
| Aug 18, 2026 |
Floyd Petersen |
AAMPH AAMPH |
SELL |
47,101 |
$989K |
| Jun 1, 2026 |
ZASLOFF MICHAEL A |
AMPH Amphastar Pharmaceuticals, Inc. |
OTHER |
17,365 |
N/A |
| Jun 1, 2026 |
ZASLOFF MICHAEL A |
AMPH Amphastar Pharmaceuticals, Inc. |
OTHER |
8,143 |
N/A |
| Jun 1, 2026 |
PRINS RICHARD K |
AMPH Amphastar Pharmaceuticals, Inc. |
OTHER |
17,365 |
N/A |
| Jun 1, 2026 |
PRINS RICHARD K |
AMPH Amphastar Pharmaceuticals, Inc. |
OTHER |
8,143 |
N/A |
| Aug 19, 2024 |
PRINS RICHARD K |
AMPH Amphastar Pharmaceuticals, Inc. |
OTHER |
1,500 |
N/A |
| Jun 1, 2026 |
Lee Howard |
AMPH Amphastar Pharmaceuticals, Inc. |
OTHER |
17,365 |
N/A |
| Jun 2, 2026 |
Lee Howard |
AMPH Amphastar Pharmaceuticals, Inc. |
OTHER |
769 |
$14K |
| Jun 1, 2026 |
Lee Howard |
AMPH Amphastar Pharmaceuticals, Inc. |
OTHER |
8,143 |
N/A |
| Jun 1, 2026 |
Gerst Diane G. |
AMPH Amphastar Pharmaceuticals, Inc. |
OTHER |
17,365 |
N/A |
| Jun 1, 2026 |
Gerst Diane G. |
AMPH Amphastar Pharmaceuticals, Inc. |
OTHER |
8,143 |
N/A |
| Jun 1, 2026 |
Deflin Gayle |
AMPH Amphastar Pharmaceuticals, Inc. |
OTHER |
17,365 |
N/A |
| Jun 1, 2026 |
Deflin Gayle |
AMPH Amphastar Pharmaceuticals, Inc. |
OTHER |
8,143 |
N/A |
| Jun 1, 2026 |
Gaugh David Russell |
AMPH Amphastar Pharmaceuticals, Inc. |
OTHER |
17,365 |
N/A |
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