Richard K Prins sold $438K of Amphastar Pharmaceuticals (AMPH)

Executed Dec 9 2024, disclosed Dec 11 2024, 2 days later.

Value, as filed

$438K

10,000 sh × $43.77

Executed

Dec 9 2024

the trade date, as filed

Disclosed

Dec 11 2024

2 days after the trade

Return, 21 sessionsiFrom the disclosed entry session; derived

–

purchases only

Returns are measured on stock purchases only.

The filer

RP Richard K Prins Director profile →

Richard K Prins (Director) filed 2 Form 4 reports in the trailing twelve months (0 purchases, 2 sales), most often in Amphastar Pharmaceuticals, Inc. (AMPH). The largest single filing was $162K of AMPH (7,973 sh × $20.30, as filed), executed Aug 11.

The name

AMPH Amphastar Pharmaceuticals, Inc. AMPH · Healthcare · 13 filings in 24 months ticker →

Healthcare · Amphastar Pharmaceuticals, Inc., a bio-pharmaceutical company, develops, manufactures, markets, and sells generic and proprietary injectabl…

More Healthcare filings→ Insider filings, newest first→ View the original filing at www.sec.gov→

Other filings by Richard K Prins in AMPH

AMPHSALE Amphastar Pharmaceuticals, Inc. $162K
7,973 sh × $20.30
Exec Aug 11
Filed Aug 12 · 6:14 PM ET AMPHSALE Amphastar Pharmaceuticals, Inc. $113K
4,179 sh × $27.10
Exec Nov 25 2025
Filed Nov 25 2025 · 5:30 PM ET AMPHSALE Amphastar Pharmaceuticals, Inc. $244K
5,000 sh × $48.80
Exec Nov 12 2024
Filed Nov 13 2024 · 5:30 PM ET