Insider · CIK 0001645326
Zhou Rong
Reports to the SEC for 1 company · RANCHO CUCAMONGA, CA
Transactions
50
Companies
1
Filings
12
CIK
0001645326
Forms 4 and 5
Insider transactions
| Date | Company | Value |
|---|---|---|
| 2026-09-16 | AMPHAmphastar Pharmaceuticals, Inc.M Exercise/Conversion | +$134K |
| 2026-09-16 | AMPHAmphastar Pharmaceuticals, Inc.S Sale | −$239K |
| 2026-09-16 | AMPHAmphastar Pharmaceuticals, Inc. · Employee Stock Option (right to buy)M Exercise/Conversion | — |
| 2026-09-02 | AMPHAmphastar Pharmaceuticals, Inc.S Sale | −$75.3K |
| 2026-03-15 | AMPHAmphastar Pharmaceuticals, Inc.F Tax Payment | −$22.3K |
| 2026-03-10 | AMPHAmphastar Pharmaceuticals, Inc.F Tax Payment | −$41.9K |
| 2026-03-09 | AMPHAmphastar Pharmaceuticals, Inc.A Award | — |
| 2026-03-09 | AMPHAmphastar Pharmaceuticals, Inc. · Employee Stock Option (right to buy)A Award | — |
| 2026-03-06 | AMPHAmphastar Pharmaceuticals, Inc.F Tax Payment | −$26.2K |
| 2026-03-04 | AMPHAmphastar Pharmaceuticals, Inc.F Tax Payment | −$22.4K |
| 2025-12-17 | AMPHAmphastar Pharmaceuticals, Inc.M Exercise/Conversion | +$111K |
| 2025-12-17 | AMPHAmphastar Pharmaceuticals, Inc.S Sale | −$256K |
| 2025-12-17 | AMPHAmphastar Pharmaceuticals, Inc. · Employee Stock Option (right to buy)M Exercise/Conversion | — |
| 2025-03-17 | AMPHAmphastar Pharmaceuticals, Inc.F Tax Payment | −$54.5K |
| 2025-03-15 | AMPHAmphastar Pharmaceuticals, Inc.F Tax Payment | −$32.6K |
| 2025-03-10 | AMPHAmphastar Pharmaceuticals, Inc.A Award | — |
| 2025-03-10 | AMPHAmphastar Pharmaceuticals, Inc. · Employee Stock Option (right to buy)A Award | — |
| 2025-03-06 | AMPHAmphastar Pharmaceuticals, Inc.F Tax Payment | −$38.3K |
| 2025-03-04 | AMPHAmphastar Pharmaceuticals, Inc.F Tax Payment | −$31K |
| 2024-12-13 | AMPHAmphastar Pharmaceuticals, Inc.M Exercise/Conversion | +$90.6K |
| 2024-12-13 | AMPHAmphastar Pharmaceuticals, Inc.S Sale | −$362K |
| 2024-12-13 | AMPHAmphastar Pharmaceuticals, Inc. · Employee Stock Option (right to buy)M Exercise/Conversion | — |
| 2024-12-12 | AMPHAmphastar Pharmaceuticals, Inc.M Exercise/Conversion | +$79.3K |
| 2024-12-12 | AMPHAmphastar Pharmaceuticals, Inc.S Sale | −$311K |
| 2024-12-12 | AMPHAmphastar Pharmaceuticals, Inc. · Employee Stock Option (right to buy)M Exercise/Conversion | — |
| 2024-11-12 | AMPHAmphastar Pharmaceuticals, Inc.M Exercise/Conversion | +$103K |
| 2024-11-12 | AMPHAmphastar Pharmaceuticals, Inc.S Sale | −$337K |
| 2024-11-12 | AMPHAmphastar Pharmaceuticals, Inc. · Employee Stock Option (right to buy)M Exercise/Conversion | — |
| 2024-09-13 | AMPHAmphastar Pharmaceuticals, Inc.M Exercise/Conversion | +$44.9K |
| 2024-09-13 | AMPHAmphastar Pharmaceuticals, Inc.S Sale | −$145K |
| 2024-09-13 | AMPHAmphastar Pharmaceuticals, Inc. · Employee Stock Option (right to buy)M Exercise/Conversion | — |
| 2024-08-26 | AMPHAmphastar Pharmaceuticals, Inc.M Exercise/Conversion | +$59.8K |
| 2024-08-26 | AMPHAmphastar Pharmaceuticals, Inc.S Sale | −$193K |
| 2024-08-26 | AMPHAmphastar Pharmaceuticals, Inc. · Employee Stock Option (right to buy)M Exercise/Conversion | — |
| 2024-03-17 | AMPHAmphastar Pharmaceuticals, Inc.F Tax Payment | −$84.4K |
| 2024-03-16 | AMPHAmphastar Pharmaceuticals, Inc.F Tax Payment | −$101K |
| 2024-03-15 | AMPHAmphastar Pharmaceuticals, Inc.F Tax Payment | −$52.5K |
| 2024-03-06 | AMPHAmphastar Pharmaceuticals, Inc.F Tax Payment | −$64.4K |
| 2024-03-04 | AMPHAmphastar Pharmaceuticals, Inc.A Award | — |
| 2024-03-04 | AMPHAmphastar Pharmaceuticals, Inc. · Employee Stock Option (right to buy)A Award | — |
| 2023-12-04 | AMPHAmphastar Pharmaceuticals, Inc.M Exercise/Conversion | +$56.9K |
| 2023-12-04 | AMPHAmphastar Pharmaceuticals, Inc.S Sale | −$209K |
| 2023-12-04 | AMPHAmphastar Pharmaceuticals, Inc. · Employee Stock Option (right to buy)M Exercise/Conversion | — |
| 2023-12-01 | AMPHAmphastar Pharmaceuticals, Inc.M Exercise/Conversion | +$62.2K |
| 2023-12-01 | AMPHAmphastar Pharmaceuticals, Inc.S Sale | −$253K |
| 2023-12-01 | AMPHAmphastar Pharmaceuticals, Inc. · Employee Stock Option (right to buy)M Exercise/Conversion | — |
| 2023-06-20 | AMPHAmphastar Pharmaceuticals, Inc.M Exercise/Conversion | +$109K |
| 2023-06-20 | AMPHAmphastar Pharmaceuticals, Inc. · Employee Stock Option (right to buy)M Exercise/Conversion | — |
| 2023-06-15 | AMPHAmphastar Pharmaceuticals, Inc.M Exercise/Conversion | +$195K |
| 2023-06-15 | AMPHAmphastar Pharmaceuticals, Inc.S Sale | −$259K |
Recent filings
- 4Zhou Rong0001645326-26-000014SEC(opens sec.gov)
- 4Zhou Rong0001645326-26-000012SEC(opens sec.gov)
- 4Zhou Rong0001645326-26-000010SEC(opens sec.gov)
- 4Zhou Rong0001645326-26-000008SEC(opens sec.gov)
- 4Zhou Rong0001645326-26-000006SEC(opens sec.gov)
- 4Zhou Rong0001645326-26-000003SEC(opens sec.gov)
- 4Zhou Rong0001645326-25-000004SEC(opens sec.gov)
- 4Zhou Rong0001415889-25-008525SEC(opens sec.gov)
- 4Zhou Rong0001415889-25-007831SEC(opens sec.gov)
- 4Zhou Rong0001415889-25-007561SEC(opens sec.gov)
- 4Zhou Rong0001415889-25-007204SEC(opens sec.gov)
- 4Zhou Rong0001415889-24-029491SEC(opens sec.gov)
Companies
Address
C/O AMPHASTAR PHARMACEUTICALS, INC. 11570 6TH STREET
RANCHO CUCAMONGA, CA, 91730