Zhang Jack Y.
- SEC CIK
- 0001611157
No open-market purchases or sales filed in the past year.
Current role at each company
- AMPH Amphastar Pharmaceuticals, Inc.CEO & CHIEF SCIENTIFIC OFFICERas of Mar 17, 2026
Open-market trades in the past year
Open-market purchases (P) and sales (S) filed in the last 365 days, not counting derivative securities or duplicate filings. Values leave out price outliers.
- Bought
- –
- 0 filings
- Sold
- –
- 0 filings
- Net
- –
- Bought minus sold
- Companies
- 0
- With open-market trades
Trades
Every Form 4 that lists Zhang Jack Y. as a reporting owner, including filings made jointly with others, grouped by company. Each row adds up one type of transaction in one filing. Only open-market purchases (P) and sales (S) are shown by default.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Jan 11, 2024 (view filing)4:37 PM ET | Jan 10 | 1 day | Luo Mary Z. and 1 otherCOO,Chief Scientist & Chairman | SSale | −131.4K | $54.59 | −$7.17M | −10.6%1.10M after | 4 lots10b5-1 |
| Jan 10, 2024 (view filing)6:27 PM ET | Jan 8-9 | 2 days | Luo Mary Z. and 1 otherCOO,Chief Scientist & Chairman | SSale | −219.8K | $58.23 | −$12.8M | −15.1%1.24M after | 10 lots10b5-1 |
| May 23, 2022 (view filing)4:05 PM ET | May 20 | 3 days | Luo Mary Z. and 1 otherCEO & Chief Scientific Officer | SSale | −10.7K | $34.21 | −$364.4K | −0.5%2.10M after | |
| May 20, 2022 (view filing)4:38 PM ET | May 18-19 | 2 days | Luo Mary Z. and 1 otherCEO & Chief Scientific Officer | SSale | −108.8K | $34.00 | −$3.70M | −4.9%2.11M after | 5 lots |
| May 18, 2022 (view filing)4:06 PM ET | May 16-17 | 2 days | Luo Mary Z. and 1 otherCEO & Chief Scientific Officer | SSale | −118.4K | $35.75 | −$4.23M | −5.1%2.22M after | 4 lots |