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Amphastar Pharmaceuticals, Inc.
AMPHNasdaqCIK: 0001297184
Over the 29 most recent insider filings, Amphastar Pharmaceuticals, Inc. (AMPH) has seen activity from 12 distinct insiders — all of them on the sell side. The activity is heavily weighted toward selling: $0 bought versus $1.5M sold, net sales of $1.5M. PETERS WILLIAM J is the most active by dollar volume, and the single largest transaction was $2.4M by PETERS WILLIAM J. All figures are drawn from official SEC Form 3, 4, and 5 disclosures and update as new filings arrive.
Total Volume
$10.0M
Purchases
$0
Sales
$1.5M
Unique Insiders
12
Recent Insider Trades
29 loaded
| Sep 17 | AMPH Amphastar Pharmaceuticals, Inc. | Zhou Rong | Insider | Sell | $239.4K |
| Sep 3 | AMPH Amphastar Pharmaceuticals, Inc. | Zhou Rong | Insider | Sell | $75.3K |
| Aug 12 | AMPH Amphastar Pharmaceuticals, Inc. | PRINS RICHARD K | Insider | Sell | $161.9K |
| Aug 11 | AMPH Amphastar Pharmaceuticals, Inc. | PETERS WILLIAM J | Insider | Sell | $183.9K |
| Jul 13 | AMPH Amphastar Pharmaceuticals, Inc. | Pierce Anthony T | Insider | Grant | $316.6K |
| Jul 13 | AMPH Amphastar Pharmaceuticals, Inc. | Pierce Anthony T | Insider | Other | $0 |
| Jun 3 | AMPH Amphastar Pharmaceuticals, Inc. | Gaugh David Russell | Insider | Grant | $319.9K |
| Jun 3 | AMPH Amphastar Pharmaceuticals, Inc. | Deflin Gayle | Insider | Grant | $319.9K |
| Jun 3 | AMPH Amphastar Pharmaceuticals, Inc. | Gerst Diane G. | Insider | Grant | $319.9K |
| Jun 3 | AMPH Amphastar Pharmaceuticals, Inc. | ZASLOFF MICHAEL A | Insider | Grant | $319.9K |
| Jun 3 | AMPH Amphastar Pharmaceuticals, Inc. | Lee Howard | Insider | Grant | $334.1K |
| Mar 17 | AMPH Amphastar Pharmaceuticals, Inc. | Zhou Rong | Insider | Tax withheld | $22.3K |
| Mar 17 | AMPH Amphastar Pharmaceuticals, Inc. | Zhang Jack Y. | Insider | Tax withheld | $230.7K |
| Mar 17 | AMPH Amphastar Pharmaceuticals, Inc. | Liawatidewi Yakob | Insider | Tax withheld | $18.8K |
| Mar 17 | AMPH Amphastar Pharmaceuticals, Inc. | PETERS WILLIAM J | Insider | Tax withheld | $35.9K |
| Mar 11 | AMPH Amphastar Pharmaceuticals, Inc. | Zhou Rong | Insider | Grant | $1.6M |
| Mar 11 | AMPH Amphastar Pharmaceuticals, Inc. | PETERS WILLIAM J | Insider | Grant | $2.4M |
| Mar 10 | AMPH Amphastar Pharmaceuticals, Inc. | PETERS WILLIAM J | Insider | Tax withheld | $41.5K |
| Mar 6 | AMPH Amphastar Pharmaceuticals, Inc. | Zhang Jack Y. | CEO & CHIEF SCIENTIFIC OFFICER | Tax withheld | $163.7K |
| Dec 18 | AMPH Amphastar Pharmaceuticals, Inc. | Zhou Rong | Insider | Sell | $256.4K |
| Nov 25 | AMPH Amphastar Pharmaceuticals, Inc. | PRINS RICHARD K | Insider | Sell | $113.3K |
| Nov 17 | AMPH Amphastar Pharmaceuticals, Inc. | Petersen Floyd F. | Insider | Sell | $441.8K |
| Nov 5 | AMPH Amphastar Pharmaceuticals, Inc. | Petersen Floyd F. | Insider | Sell | $12.6K |
| Oct 2 | AMPH Amphastar Pharmaceuticals, Inc. | Petersen Floyd F. | Insider | Sell | $13.6K |
| Sep 3 | AMPH Amphastar Pharmaceuticals, Inc. | Petersen Floyd F. | Insider | Sell | $15.5K |
| Aug 4 | AMPH Amphastar Pharmaceuticals, Inc. | Petersen Floyd F. | Insider | Sell | $10.4K |
| Jul 22 | AMPH Amphastar Pharmaceuticals, Inc. | Gaugh David Russell | Insider | Grant | $288.4K |
| Jul 22 | AMPH Amphastar Pharmaceuticals, Inc. | Gaugh David Russell | Insider | Other | $0 |
| Jun 3 | AMPH Amphastar Pharmaceuticals, Inc. | PRINS RICHARD K | Insider | Grant | $319.9K |
29 filings