| Insider | Role | Shares | Value | Buys | Sells |
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| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
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| Insider | Role | Shares | Value | Buys | Sells |
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| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
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Senior EVP, Production Center | Senior EVP, Production Center | EVP, Production Center +1 more
1 company
Zhou Rong is a Senior EVP, Production Center at Amphastar Pharmaceuticals, Inc.. Recent SEC Form 4 filings include 0 buys and 12 sells.
Estimated insider holdings value: $3.4M based on current market prices.
| Date | Ticker | Role | Type | Shares | Price | Value | Chg% | 3M | 12M | SEC |
|---|---|---|---|---|---|---|---|---|---|---|
| Dec 17, 2025 | AMPH Amphastar Pharmaceuticals, Inc. | Senior EVP, Production Center | Sale+OE | 9,787 | $26.20 | $256,379.27 | -6.6% | -25.2% | - | |
| Dec 13, 2024 | AMPH Amphastar Pharmaceuticals, Inc. | Senior EVP, Production Center | Sale+OE | 15,000 | $44.85 | $672,815.00 | -6.0% | -37.9% | -40.2% | |
| Nov 12, 2024 | AMPH Amphastar Pharmaceuticals, Inc. | Senior EVP, Production Center | Sale+OE | 6,893 | $48.88 | $336,929.84 | -5.5% | -32.5% | -41.7% | |
| Sep 13, 2024 | AMPH Amphastar Pharmaceuticals, Inc. | Senior EVP, Production Center | Sale+OE | 3,000 | $48.26 | $144,784.50 | -2.5% | -7.5% | -41.7% | |
| Aug 26, 2024 | AMPH Amphastar Pharmaceuticals, Inc. | Senior EVP, Production Center | Sale+OE | 4,000 | $48.35 | $193,400.00 | -3.3% | -7.3% | -37.0% | |
| Dec 4, 2023 | AMPH Amphastar Pharmaceuticals, Inc. | Senior EVP, Production Center | Sale+OE | 7,830 | $59.03 | $462,195.40 | -3.4% | -22.1% | -25.0% | |
| Jun 15, 2023 | AMPH Amphastar Pharmaceuticals, Inc. | EVP, Production Center | Sale+OE | 5,000 | $51.79 | $258,946.50 | -4.9% | -11.4% | -22.5% | |
| Jun 13, 2023 | AMPH Amphastar Pharmaceuticals, Inc. | EVP, Production Center | Sale+OE | 5,000 | $48.24 | $241,200.00 | -5.4% | +9.1% | -14.1% | |
| May 18, 2023 | AMPH Amphastar Pharmaceuticals, Inc. | EVP, Production Center | Sale+OE | 10,000 | $44.21 | $442,050.00 | -10.2% | +27.9% | -0.8% | |
| Feb 25, 2022 | AMPH Amphastar Pharmaceuticals, Inc. | EVP, Production Center | Sale+OE | 13,246 | $28.77 | $381,087.42 | -15.9% | +25.8% | +13.1% |