MarketPeel
Insider Trading Intelligence
Pricing
…
Anthony T. Pierce
Thu, Jul 9, 2026
12d ago
bought
$0.00
of
AMPH
7,886
shares @ $0.00
New position
2nd largest trade (out of 2)
Trade made by a director
Unscheduled trade
Price 19% below 200-day moving average
Small Cap stock — insider trades carry more weight
AMPH
Amphastar Pharmaceuticals, Inc.
Health Care
Pharmaceuticals
1D
0.00%
1W
+5.00%
1M
+5.00%
3M
-5.91%
6M
—
1Y
—
Recent insider activity at AMPH
Dec 17
Rong Zhou
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Floyd F. Petersen
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Dec 11
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Nov 25
Richard K. Prins
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Nov 13
Floyd F. Petersen
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Nov 3
Floyd F. Petersen
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Oct 1
Floyd F. Petersen
Sold
$13.60k
Sep 2
Floyd F. Petersen
Sold
$15.49k
Full AMPH profile →
Anthony T. Pierce’s trading history →
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