CIK 0001297184 · Large accelerated filer
Amphastar Pharmaceuticals, Inc.
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- AMPH
- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- FY end
- Dec 31
- Entity type
- operating
- EIN
- 330702205
- Phone
- 909-980-9484
- Business address
- 11570 SIXTH STREET, RANCHO CUCAMONGA, CA, 91730
- Open-market buys, last 90 days
- $0
- in 0 filings
- Open-market sales, last 90 days
- $1,232,854
- in 4 filings, $918K under 10b5-1 plans
Net −$1,232,854. Shares bought or sold at a price by officers, directors and 10% owners (Form 4 codes P and S). Grants, option exercises and tax withholding aren't counted.
Who's trading
90 days
| Date | Insider | Transaction | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|
| 2025-03-17 | Liawatidewi Yakob EVP CORP ADMIN CENTER | Shares withheld for taxes | −1,731 | $27.69 | $48K | 90,909 |
| 2025-03-17 | PETERS WILLIAM J CFO, EVP & TREASURER | Shares withheld for taxes | −3,004 | $27.69 | $83K | 125,258 |
| 2025-03-15 | Zhou Rong SENIOR EVP, PRODUCTION CENTER | Shares withheld for taxes | −1,222 | $26.66 | $33K | 139,464 |
| 2025-03-15 | Zhang Jack Y. CEO & CHIEF SCIENTIFIC OFFICER | Shares withheld for taxes | −9,765 | $26.66 | $260K | 2,663,809 |
| 2025-03-15 | Zhang Jack Y. CEO & CHIEF SCIENTIFIC OFFICER | Shares withheld for taxes | −4,115 | $26.66 | $110K | 1,192,698 |
| 2025-03-15 | Liawatidewi Yakob EVP CORP ADMIN CENTER | Shares withheld for taxes | −1,031 | $26.66 | $27K | 92,640 |
| 2025-03-15 | PETERS WILLIAM J CFO, EVP & TREASURER | Shares withheld for taxes | −1,968 | $26.66 | $52K | 128,262 |
| 2025-03-14 | Zhang Jack Y. CEO & CHIEF SCIENTIFIC OFFICER | Option exercise | +290,477 | $14.69 | $4.3M | 2,899,859 |
| 2025-03-14 | Zhang Jack Y. CEO & CHIEF SCIENTIFIC OFFICER | Shares withheld for taxes | −226,285 | $26.66 | $6.0M | 2,673,574 |
| 2025-03-14 | Zhang Jack Y. CEO & CHIEF SCIENTIFIC OFFICER | Option exercise | +211,213 | $14.69 | $3.1M | 1,359,470 |
| 2025-03-14 | Zhang Jack Y. CEO & CHIEF SCIENTIFIC OFFICER | Shares withheld for taxes | −162,657 | $26.66 | $4.3M | 1,196,813 |
| 2025-03-14 | Zhang Jack Y. CEO & CHIEF SCIENTIFIC OFFICER | Option exercise · Employee Stock Option (right to buy) | −290,477 | 0 | ||
| 2025-03-14 | Zhang Jack Y. CEO & CHIEF SCIENTIFIC OFFICER | Option exercise · Employee Stock Option (right to buy) | −211,213 | 0 | ||
| 2025-03-10 | Zhou Rong SENIOR EVP, PRODUCTION CENTER | Grant or award | +24,692 | 140,686 | ||
| 2025-03-10 | Zhou Rong SENIOR EVP, PRODUCTION CENTER | Grant or award · Employee Stock Option (right to buy) | +52,437 | 52,437 | ||
| 2025-03-10 | Liawatidewi Yakob EVP CORP ADMIN CENTER | Grant or award | +20,837 | 93,671 | ||
| 2025-03-10 | Liawatidewi Yakob EVP CORP ADMIN CENTER | Grant or award · Employee Stock Option (right to buy) | +44,253 | 44,253 | ||
| 2025-03-10 | PETERS WILLIAM J CFO, EVP & TREASURER | Grant or award | +36,747 | 130,230 | ||
| 2025-03-10 | PETERS WILLIAM J CFO, EVP & TREASURER | Grant or award · Employee Stock Option (right to buy) | +78,039 | 78,039 | ||
| 2025-03-10 | Zhang Jack Y. CEO & CHIEF SCIENTIFIC OFFICER | Grant or award | +116,226 | 2,609,382 |
Page 6 of 81 · 1,602 trades