MarketPeel
Insider Trading Intelligence
Pricing
…
Floyd F. Petersen
Thu, Nov 13, 2025
Nov 13
sold
$0.00
of
AMPH
16,679
shares @ $0.00
Decreased holdings by
-100.00%
78th largest trade (out of 84)
Trade made by a director
49% win rate · +4.9% median edge vs SPY (67 trades, 90-day)
Small Cap stock — insider trades carry more weight
AMPH
Amphastar Pharmaceuticals, Inc.
Health Care
Pharmaceuticals
1D
0.00%
1W
-0.40%
1M
-4.59%
3M
-13.78%
6M
—
1Y
—
Recent insider activity at AMPH
Dec 17
Rong Zhou
Sold
$256.38k
Dec 12
Floyd F. Petersen
Sold
$62.89k
Dec 11
Floyd F. Petersen
Sold
$44.62k
Nov 25
Richard K. Prins
Sold
$113.25k
Nov 13
Floyd F. Petersen
Sold
$441.84k
Nov 3
Floyd F. Petersen
Sold
$12.63k
Oct 1
Floyd F. Petersen
Sold
$13.60k
Sep 2
Floyd F. Petersen
Sold
$15.49k
Full AMPH profile →
Floyd F. Petersen’s trading history →
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