Amphastar Pharmaceuticals, Inc. (AMPH)
NASDAQ$28.99
Market Cap
$1.38B
Sector
Healthcare
Industry
Drug Manufacturers—Specialty & Generic
Rank in Sector
433 of 916
Rank in Industry
20 of 56
Insider Buys Sum
Cluster
Trading
Trading
Insider Buys
Quantity
Quantity
Historical
Profitability
Profitability
Investor
Ownership
Ownership
Largest Insider Buys in Sector
AMPH Insider Trading Activity
AMPH Median Price and Trade Amounts History Chart
Statistics of Insider Transactions
Amount of Insider Buys and Sells
Buys | $0 | 0 | 0 |
Sells | $4,498,017 | 19 | 100 |
Related Transactions
| Liawatidewi Yakob | EVP CORP ADMIN CENTER | 0 | $0 | 1 | $271,389 | $-271,389 |
| Petersen Floyd F. | director | 0 | $0 | 6 | $355,481 | $-355,481 |
| PETERS WILLIAM J | CFO, EVP & TREASURER | 0 | $0 | 4 | $1.1M | $-1.1M |
| Zhou Rong | SENIOR EVP, PRODUCTION CENTER | 0 | $0 | 5 | $1.35M | $-1.35M |
| PRINS RICHARD K | director | 0 | $0 | 3 | $1.42M | $-1.42M |
About Amphastar Pharmaceuticals, Inc.
Amphastar Pharmaceuticals, Inc., a bio-pharmaceutical company, develops, manufactures, markets, and sells generic and proprietary injectable, inhalation, and intranasal products in the United States, China, and France. The company operates through two segments, Finished Pharmaceutical Products and API. It offers Primatene Mist, an over-the-counter epinephrine inhalation product for the temporary relief of mild symptoms of intermittent asthma; Enoxaparin, a low molecular weight heparin to prevent and treat deep vein thrombosis; Naloxone for …
Insider Activity of Amphastar Pharmaceuticals, Inc.
Over the last 12 months, insiders at Amphastar Pharmaceuticals, Inc. have bought $0 and sold $4.5M worth of Amphastar Pharmaceuticals, Inc. stock.
On average, over the past 5 years, insiders at Amphastar Pharmaceuticals, Inc. have bought $40,520 and sold $15.1M worth of stock each year.
There was no buying activity among insiders over the last 12 months.
The last purchase of 2,000 shares for transaction amount of $40,520 was made by Maris David (director) on 2020‑08‑14.
List of Insider Buy and Sell Transactions, Amphastar Pharmaceuticals, Inc.
| 2025-03-06 | Sale | Petersen Floyd F. | director | 1,000 0.0021% | $27.99 | $27,986 | -0.11% | |
| 2025-03-04 | Sale | PETERS WILLIAM J | CFO, EVP & TREASURER | 4,231 0.0088% | $27.54 | $116,515 | +2.43% | |
| 2024-12-13 | Sale | Zhou Rong | SENIOR EVP, PRODUCTION CENTER | 8,000 0.018% | $45.23 | $361,840 | -23.37% | |
| 2024-12-12 | Sale | Zhou Rong | SENIOR EVP, PRODUCTION CENTER | 7,000 0.0145% | $44.42 | $310,975 | -26.79% | |
| 2024-12-09 | Sale | PRINS RICHARD K | director | 10,000 0.0207% | $43.77 | $437,702 | -25.19% | |
| 2024-11-12 | Sale | Zhou Rong | SENIOR EVP, PRODUCTION CENTER | 6,893 0.0147% | $48.88 | $336,930 | -24.25% | |
| 2024-11-12 | Sale | PRINS RICHARD K | director | 5,000 0.0107% | $48.80 | $243,986 | -24.25% | |
| 2024-11-06 | Sale | PETERS WILLIAM J | CFO, EVP & TREASURER | 7,426 0.0148% | $52.05 | $386,523 | -32.02% | |
| 2024-11-06 | Sale | Liawatidewi Yakob | EVP CORP ADMIN CENTER | 5,214 0.0104% | $52.05 | $271,389 | -32.02% | |
| 2024-09-13 | Sale | Zhou Rong | SENIOR EVP, PRODUCTION CENTER | 3,000 0.0062% | $48.26 | $144,785 | -18.09% | |
| 2024-09-05 | Sale | Petersen Floyd F. | director | 3,000 0.0063% | $46.47 | $139,417 | -10.06% | |
| 2024-08-26 | Sale | Zhou Rong | SENIOR EVP, PRODUCTION CENTER | 4,000 0.0083% | $48.35 | $193,400 | -9.43% | |
| 2024-08-12 | Sale | PRINS RICHARD K | director | 17,101 0.0347% | $43.07 | $736,550 | +1.31% | |
| 2024-07-31 | Sale | PETERS WILLIAM J | CFO, EVP & TREASURER | 10,282 0.0214% | $44.23 | $454,773 | +0.21% | |
| 2024-06-27 | Sale | PETERS WILLIAM J | CFO, EVP & TREASURER | 3,596 0.0075% | $40.93 | $147,169 | +4.44% | |
| 2024-06-10 | Sale | Petersen Floyd F. | director | 3,000 0.0061% | $41.40 | $124,200 | -1.92% | |
| 2024-06-03 | Sale | Petersen Floyd F. | director | 500 0.001% | $42.65 | $21,326 | -3.20% | |
| 2024-05-01 | Sale | Petersen Floyd F. | director | 500 0.001% | $41.67 | $20,837 | +0.10% | |
| 2024-04-01 | Sale | Petersen Floyd F. | director | 500 0.001% | $43.43 | $21,714 | -4.22% | |
| 2024-03-06 | Sale | PETERS WILLIAM J | CFO, EVP & TREASURER | 18,136 0.0379% | $46.48 | $842,883 | -8.69% |
Total: 398
*Gray background shows transactions not older than one year
Insider Historical Profitability
22.92%
| Petersen Floyd F. | director | 74409 0.1562% | $2.16M | 1 | 60 | +27.09% |
| PRINS RICHARD K | director | 30471 0.0639% | $883,354.29 | 2 | 42 | +28.12% |
| Zhang Jack Y. | CEO & Chief Scientific Officer | 6827679 14.3288% | $197.93M | 2 | 35 | +24.35% |
| Koo Richard | director | 253270 0.5315% | $7.34M | 1 | 3 | +27.09% |
| Lee Howard | director | 142939 0.3% | $4.14M | 1 | 18 | +18.46% |
*Gray background shows insiders who have made transactions during last year
Historical Insider Profitability vs. Competitors
$910,099,463 | 123 | 11.52% | $2.38B | |
$187,390,806 | 89 | 12.63% | $808.7M | |
$12,681,496 | 70 | 20.90% | $756.61M | |
$23,522,750 | 59 | -6.74% | $5.19B | |
$14,599,168 | 59 | 12.79% | $1.46B |
AMPH Institutional Investors: Active Positions
| Increased Positions | 123 | +36.07% | 4M | +12.11% |
| Decreased Positions | 150 | -43.99% | 4M | -11.63% |
| New Positions | 38 | New | 1M | New |
| Sold Out Positions | 50 | Sold Out | 1M | Sold Out |
| Total Postitions | 314 | -7.92% | 36M | +0.47% |
AMPH Ownership Change vs Market
Institutional Investor Ownership
Top Shareholders
Top Buyers
Top Sellers
New Shareholders
Sold-Out Shareholders
Active Shareholders
| Blackrock, Inc. | $173,930.00 | 12.75% | 6.12M | +85,100 | +1.41% | 2024-12-31 |
| Vanguard Group Inc | $77,177.00 | 5.66% | 2.71M | +3,155 | +0.12% | 2024-12-31 |
| Td Asset Management Inc | $52,319.00 | 3.83% | 1.84M | -294,752 | -13.8% | 2024-12-31 |
| State Street Corp | $45,377.00 | 3.33% | 1.6M | +65,646 | +4.29% | 2024-12-31 |
| Neuberger Berman Group Llc | $39,066.00 | 2.86% | 1.37M | -240,963 | -14.92% | 2024-12-31 |
| Pacer Advisors, Inc. | $38,391.00 | 2.81% | 1.35M | +1M | +51,977.44% | 2024-12-31 |
| Dimensional Fund Advisors Lp | $34,076.00 | 2.5% | 1.2M | +105,288 | +9.63% | 2024-12-31 |
| Fuller & Thaler Asset Management, Inc. | $32,209.00 | 2.36% | 1.13M | -127,841 | -10.14% | 2024-12-31 |
| Epoch Investment Partners, Inc. | $31,309.00 | 2.29% | 1.1M | -89,837 | -7.54% | 2024-12-31 |
| Boston Trust Walden Corp | $27,831.00 | 2.04% | 978,920 | +439,281 | +81.4% | 2024-12-31 |
Financial Ratios
Summary
Comparison with Competitors
Analyst Recommendations
Analyst Price Targets
Screener Ideas
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