Richard K. Prins bought $0K of AMPH

bought $0.00 of AMPH

5,122 shares @ $0.00

Increased holdings by +17.00%

Cluster Buy

Trade made by a director

Part of a cluster of 3 transactions by 2 insiders

Unscheduled trade

48% win rate · +6.2% median edge vs SPY (21 trades, 90-day)

Price 32% below 200-day moving average

Small Cap stock — insider trades carry more weight

AMPHAmphastar Pharmaceuticals, Inc.

Health CarePharmaceuticals

1D0.00%

1W-0.40%

1M-4.59%

3M-13.78%

6M—

1Y—

Recent insider activity at AMPH