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4

Changes in Ownership

Amphastar Pharmaceuticals, Inc. Filed Acc 0001047579-26-000005

Director sold 7,973 shares at $20.30 ($161,852)

From the SEC's structured data for this filing

Trades in this filing

Insider Date Transaction Shares Price Value Owned after D/I
PRINS RICHARD K Director 2026-08-11 Sale −7,973 $20.30 $161,852 29,625 D
Open-market sales · 7,973 sh · avg $20.30 · $161,852
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