Zhou Rong
SEC CIK 1645326 · EDGAR
BoughtSold
Companies
| Ticker | Company | Title | Holding | Bought | Sold | Trades | First | Last |
|---|---|---|---|---|---|---|---|---|
| AMPH | Amphastar Pharmaceuticals, Inc. | Senior EVP, Production Center | 179.2K | — | $5.02M | 54 | 2021-07-20 | 2026-09-16 |
Most active insiders at AMPH, 12 months
| # | Insider | Title | Bought | Sold |
|---|---|---|---|---|
| 1 | Petersen Floyd F. | Dir | — | $575.6K |
| 2 | Zhou Rong | SENIOR EVP, PRODUCTION CENTER | — | $571.1K |
| 3 | PETERS WILLIAM J | CFO, EVP, Treas, Dir | — | $287.4K |
| 4 | PRINS RICHARD K | Dir | — | $275.1K |
| 5 | Pierce Anthony T | Dir | — | — |
| 6 | Gaugh David Russell | Dir | — | — |
| 7 | Deflin Gayle | Dir | — | — |
| 8 | Liawatidewi Yakob | EVP CORP ADMIN CENTER, Dir | — | — |
| 9 | Gerst Diane G. | Dir | — | — |
| 10 | Zhang Jack Y. | CEO, CSO, Dir, 10% | — | — |
Transactions 54
| X | Filed | Traded | Ticker | Company | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| D | 2026-09-17 18:19 | 2026-09-16 | AMPH | Amphastar Pharmaceuticals, Inc. | Zhou Rong | SENIOR EVP, PRODUCTION CENTER | M - OptEx | $13.35 | +10.0K | 179.2K | +6% | +$133.5K |
| D | 2026-09-17 18:19 | 2026-09-16 | AMPH | Amphastar Pharmaceuticals, Inc. | Zhou Rong | SENIOR EVP, PRODUCTION CENTER | S - Sale+OE | $23.94 | -10.0K | 169.2K | -6% | -$239.4K |
| 2026-09-03 19:42 | 2026-09-02 | AMPH | Amphastar Pharmaceuticals, Inc. | Zhou Rong | SENIOR EVP, PRODUCTION CENTER | S - Sale | $23.63 | -3,187 | 169.2K | -2% | -$75.3K | |
| 2026-03-17 | 2026-03-15 | AMPH | Amphastar Pharmaceuticals, Inc. | Zhou Rong | SENIOR EVP, PRODUCTION CENTER | F - Tax | $18.18 | -1,225 | 171.6K | -0.7% | -$22.3K | |
| D | 2026-03-11 | 2026-03-09 | AMPH | Amphastar Pharmaceuticals, Inc. | Zhou Rong | SENIOR EVP, PRODUCTION CENTER | A - Grant | $0.00 | +39.4K | 175.0K | +29% | $0 |
| D | 2026-03-11 | 2026-03-10 | AMPH | Amphastar Pharmaceuticals, Inc. | Zhou Rong | SENIOR EVP, PRODUCTION CENTER | F - Tax | $18.91 | -2,215 | 172.8K | -1% | -$41.9K |
| 2026-03-10 | 2026-03-06 | AMPH | Amphastar Pharmaceuticals, Inc. | Zhou Rong | SENIOR EVP, PRODUCTION CENTER | F - Tax | $19.34 | -1,357 | 135.6K | -1.0% | -$26.2K | |
| 2026-03-06 | 2026-03-04 | AMPH | Amphastar Pharmaceuticals, Inc. | Zhou Rong | SENIOR EVP, PRODUCTION CENTER | F - Tax | $19.96 | -1,124 | 136.9K | -0.8% | -$22.4K | |
| D | 2025-12-18 | 2025-12-17 | AMPH | Amphastar Pharmaceuticals, Inc. | Zhou Rong | SENIOR EVP, PRODUCTION CENTER | M - OptEx | $11.33 | +9,787 | 147.8K | +7% | +$110.9K |
| D | 2025-12-18 | 2025-12-17 | AMPH | Amphastar Pharmaceuticals, Inc. | Zhou Rong | SENIOR EVP, PRODUCTION CENTER | S - Sale+OE | $26.20 | -9,787 | 138.0K | -7% | -$256.4K |
| M | 2025-03-18 | 2025-03-15+ | AMPH | Amphastar Pharmaceuticals, Inc. | Zhou Rong | SENIOR EVP, PRODUCTION CENTER | F - Tax | $27.30 | -3,189 | 139.5K | -2% | -$87.0K |
| D | 2025-03-12 | 2025-03-10 | AMPH | Amphastar Pharmaceuticals, Inc. | Zhou Rong | SENIOR EVP, PRODUCTION CENTER | A - Grant | $0.00 | +24.7K | 140.7K | +21% | $0 |
| 2025-03-10 | 2025-03-06 | AMPH | Amphastar Pharmaceuticals, Inc. | Zhou Rong | SENIOR EVP, PRODUCTION CENTER | F - Tax | $28.32 | -1,354 | 116.0K | -1% | -$38.3K | |
| 2025-03-06 | 2025-03-04 | AMPH | Amphastar Pharmaceuticals, Inc. | Zhou Rong | SENIOR EVP, PRODUCTION CENTER | F - Tax | $27.62 | -1,121 | 117.3K | -0.9% | -$31.0K | |
| DM | 2024-12-16 | 2024-12-12+ | AMPH | Amphastar Pharmaceuticals, Inc. | Zhou Rong | SENIOR EVP, PRODUCTION CENTER | M - OptEx | $11.33 | +15.0K | 125.5K | +14% | +$169.9K |
| DM | 2024-12-16 | 2024-12-12+ | AMPH | Amphastar Pharmaceuticals, Inc. | Zhou Rong | SENIOR EVP, PRODUCTION CENTER | S - Sale+OE | $44.86 | -15.0K | 118.5K | -11% | -$672.9K |
| D | 2024-11-13 | 2024-11-12 | AMPH | Amphastar Pharmaceuticals, Inc. | Zhou Rong | SENIOR EVP, PRODUCTION CENTER | S - Sale+OE | $48.88 | -6,893 | 118.4K | -6% | -$336.9K |
| D | 2024-11-13 | 2024-11-12 | AMPH | Amphastar Pharmaceuticals, Inc. | Zhou Rong | SENIOR EVP, PRODUCTION CENTER | M - OptEx | $14.95 | +6,893 | 125.3K | +6% | +$103.1K |
| D | 2024-09-17 | 2024-09-13 | AMPH | Amphastar Pharmaceuticals, Inc. | Zhou Rong | SENIOR EVP, PRODUCTION CENTER | M - OptEx | $14.95 | +3,000 | 121.4K | +3% | +$44.9K |
| D | 2024-09-17 | 2024-09-13 | AMPH | Amphastar Pharmaceuticals, Inc. | Zhou Rong | SENIOR EVP, PRODUCTION CENTER | S - Sale+OE | $48.26 | -3,000 | 118.4K | -2% | -$144.8K |
| D | 2024-08-27 | 2024-08-26 | AMPH | Amphastar Pharmaceuticals, Inc. | Zhou Rong | SENIOR EVP, PRODUCTION CENTER | M - OptEx | $14.95 | +4,000 | 122.4K | +3% | +$59.8K |
| D | 2024-08-27 | 2024-08-26 | AMPH | Amphastar Pharmaceuticals, Inc. | Zhou Rong | SENIOR EVP, PRODUCTION CENTER | S - Sale+OE | $48.35 | -4,000 | 118.4K | -3% | -$193.4K |
| M | 2024-03-19 | 2024-03-15+ | AMPH | Amphastar Pharmaceuticals, Inc. | Zhou Rong | SENIOR EVP, PRODUCTION CENTER | F - Tax | $43.05 | -5,535 | 120.0K | -4% | -$238.3K |
| 2024-03-08 | 2024-03-06 | AMPH | Amphastar Pharmaceuticals, Inc. | Zhou Rong | SENIOR EVP, PRODUCTION CENTER | F - Tax | $46.31 | -1,390 | 123.6K | -1% | -$64.4K | |
| D | 2024-03-06 | 2024-03-04 | AMPH | Amphastar Pharmaceuticals, Inc. | Zhou Rong | SENIOR EVP, PRODUCTION CENTER | A - Grant | $0.00 | +12.5K | 124.9K | +11% | $0 |
| DM | 2023-12-05 | 2023-12-01+ | AMPH | Amphastar Pharmaceuticals, Inc. | Zhou Rong | Senior EVP, Production Center | M - OptEx | $15.20 | +7,830 | 115.9K | +7% | +$119.0K |
| DM | 2023-12-05 | 2023-12-01+ | AMPH | Amphastar Pharmaceuticals, Inc. | Zhou Rong | Senior EVP, Production Center | S - Sale+OE | $59.03 | -7,830 | 112.4K | -7% | -$462.2K |
| D | 2023-06-21 | 2023-06-20 | AMPH | Amphastar Pharmaceuticals, Inc. | Zhou Rong | EVP, Production Center | M - OptEx | $11.33 | +9,651 | 112.3K | +9% | +$109.3K |
| DM | 2023-06-20 | 2023-06-15 | AMPH | Amphastar Pharmaceuticals, Inc. | Zhou Rong | EVP, Production Center | M - OptEx | $14.64 | +19.4K | 101.5K | +24% | +$283.7K |
| D | 2023-06-20 | 2023-06-15 | AMPH | Amphastar Pharmaceuticals, Inc. | Zhou Rong | EVP, Production Center | S - Sale+OE | $51.79 | -5,000 | 96.9K | -5% | -$258.9K |
| D | 2023-06-14 | 2023-06-13 | AMPH | Amphastar Pharmaceuticals, Inc. | Zhou Rong | EVP, Production Center | S - Sale+OE | $48.24 | -5,000 | 88.3K | -5% | -$241.2K |
| D | 2023-06-14 | 2023-06-13 | AMPH | Amphastar Pharmaceuticals, Inc. | Zhou Rong | EVP, Production Center | M - OptEx | $14.40 | +5,000 | 93.3K | +6% | +$72.0K |
| D | 2023-05-19 | 2023-05-18 | AMPH | Amphastar Pharmaceuticals, Inc. | Zhou Rong | EVP, Production Center | M - OptEx | $14.40 | +10.0K | 97.6K | +11% | +$144.0K |
| D | 2023-05-19 | 2023-05-18 | AMPH | Amphastar Pharmaceuticals, Inc. | Zhou Rong | EVP, Production Center | S - Sale+OE | $44.21 | -10.0K | 87.6K | -10% | -$442.1K |
| M | 2023-03-20 | 2023-03-16+ | AMPH | Amphastar Pharmaceuticals, Inc. | Zhou Rong | EVP, Production Center | F - Tax | $37.00 | -4,184 | 89.5K | -4% | -$154.8K |
| 2023-03-17 | 2023-03-15 | AMPH | Amphastar Pharmaceuticals, Inc. | Zhou Rong | EVP, Production Center | F - Tax | $36.84 | -2,057 | 91.8K | -2% | -$75.8K | |
| D | 2023-03-08 | 2023-03-06 | AMPH | Amphastar Pharmaceuticals, Inc. | Zhou Rong | EVP, Production Center | A - Grant | $0.00 | +15.1K | 93.8K | +19% | $0 |
| M | 2022-03-18 | 2022-03-16+ | AMPH | Amphastar Pharmaceuticals, Inc. | Zhou Rong | EVP, Production Center | F - Tax | $34.20 | -4,730 | 77.6K | -6% | -$161.8K |
| D | 2022-03-17 | 2022-03-15 | AMPH | Amphastar Pharmaceuticals, Inc. | Zhou Rong | EVP, Production Center | F - Tax | $34.74 | -1,652 | 82.3K | -2% | -$57.4K |
| D | 2022-03-17 | 2022-03-15 | AMPH | Amphastar Pharmaceuticals, Inc. | Zhou Rong | EVP, Production Center | A - Grant | $0.00 | +13.7K | 84.0K | +19% | $0 |
| D | 2022-03-01 | 2022-02-25 | AMPH | Amphastar Pharmaceuticals, Inc. | Zhou Rong | EVP, Production Center | M - OptEx | $10.93 | +7,000 | 83.6K | +9% | +$76.5K |
| D | 2022-03-01 | 2022-02-25 | AMPH | Amphastar Pharmaceuticals, Inc. | Zhou Rong | EVP, Production Center | S - Sale+OE | $28.77 | -13.2K | 70.3K | -16% | -$381.1K |
| D | 2022-02-09 | 2022-02-08 | AMPH | Amphastar Pharmaceuticals, Inc. | Zhou Rong | EVP, Production Center | M - OptEx | $10.93 | +7,000 | 83.6K | +9% | +$76.5K |
| D | 2022-02-09 | 2022-02-08 | AMPH | Amphastar Pharmaceuticals, Inc. | Zhou Rong | EVP, Production Center | S - Sale+OE | $26.77 | -7,000 | 76.6K | -8% | -$187.4K |
| D | 2022-01-11 | 2022-01-10 | AMPH | Amphastar Pharmaceuticals, Inc. | Zhou Rong | EVP, Production Center | M - OptEx | $10.93 | +14.0K | 97.5K | +17% | +$153.0K |
| DM | 2022-01-11 | 2022-01-10 | AMPH | Amphastar Pharmaceuticals, Inc. | Zhou Rong | EVP, Production Center | S - Sale+OE | $25.36 | -20.9K | 76.6K | -21% | -$530.7K |
| D | 2021-11-12 | 2021-11-11 | AMPH | Amphastar Pharmaceuticals, Inc. | Zhou Rong | EVP, Production Center | M - OptEx | $10.48 | +7,813 | 90.9K | +9% | +$81.9K |
| D | 2021-11-12 | 2021-11-11 | AMPH | Amphastar Pharmaceuticals, Inc. | Zhou Rong | EVP, Production Center | S - Sale+OE | $21.67 | -7,813 | 83.1K | -9% | -$169.3K |
| D | 2021-08-04 | 2021-08-02 | AMPH | Amphastar Pharmaceuticals, Inc. | Zhou Rong | EVP, Production Center | M - OptEx | $10.48 | +6,000 | 92.2K | +7% | +$62.9K |
| D | 2021-08-04 | 2021-08-02 | AMPH | Amphastar Pharmaceuticals, Inc. | Zhou Rong | EVP, Production Center | S - Sale+OE | $21.24 | -9,123 | 83.1K | -10% | -$193.8K |
| D | 2021-07-27 | 2021-07-26 | AMPH | Amphastar Pharmaceuticals, Inc. | Zhou Rong | EVP, Production Center | S - Sale+OE | $20.87 | -6,000 | 86.2K | -7% | -$125.2K |
| D | 2021-07-27 | 2021-07-26 | AMPH | Amphastar Pharmaceuticals, Inc. | Zhou Rong | EVP, Production Center | M - OptEx | $10.48 | +6,000 | 92.2K | +7% | +$62.9K |
| D | 2021-07-22 | 2021-07-20 | AMPH | Amphastar Pharmaceuticals, Inc. | Zhou Rong | EVP, Production Center | M - OptEx | $10.48 | +5,187 | 91.4K | +6% | +$54.4K |
| D | 2021-07-22 | 2021-07-20 | AMPH | Amphastar Pharmaceuticals, Inc. | Zhou Rong | EVP, Production Center | S - Sale+OE | $20.57 | -5,187 | 86.2K | -6% | -$106.7K |
Purchase Sale Sale after option exercise All abbreviations