Who
Michael A. Zasloff
Director
Company insider
Files Form 4 as: Director, Amphastar Pharmaceuticals.
In numbers
- Trades disclosed
- 76
- Buys
- 1
- Sells
- 18
- Bought
- $35K
- Sold
- $7.4M
- Companies
- 1
- Companies where not an officer
- 1
- First trade
- 19 Aug 2014
- Last trade
- 1 Jun 2026
- Last filed
- 3 Jun 2026
Companies traded
Activity over time
1 Nov 2024 – 1 Oct 2026
Buys above the line, sells below, each month.
Every trade
| Traded | Company | What | Amount | |
|---|---|---|---|---|
| 1 Jun 2026filed 3 Jun 2026 | AMPH Amphastar PharmaceuticalsPharmaceuticals | SEC FORM 4 Code A | —8,143 at $0.00 | filing |
| 1 Jun 2026filed 3 Jun 2026 | AMPH Amphastar Pharmaceuticalsoption or derivative · Pharmaceuticals | SEC FORM 4 Code A | —17,365 at $0.00 | filing |
| 1 Jun 2026filed 3 Jun 2026 | AMPH Amphastar Pharmaceuticalsoption or derivative · Pharmaceuticals | SEC FORM 4 Code A | —17,365 at $0.00 | filing |
| 1 Jun 2026filed 3 Jun 2026 | AMPH Amphastar PharmaceuticalsPharmaceuticals | SEC FORM 4 Code A | —8,143 at $0.00 | filing |
| 2 Jun 2025filed 4 Jun 2025 | AMPH Amphastar Pharmaceuticalsoption or derivative · Pharmaceuticals | SEC FORM 4 Code A | —11,402 at $0.00 | filing |
| 2 Jun 2025filed 4 Jun 2025 | AMPH Amphastar PharmaceuticalsPharmaceuticals | SEC FORM 4 Code A | —5,122 at $0.00 | filing |
| 3 Jun 2024filed 5 Jun 2024 | AMPH Amphastar Pharmaceuticalsoption or derivative · Pharmaceuticals | SEC FORM 4 Code A | —6,864 at $0.00 | filing |
| 3 Jun 2024filed 5 Jun 2024 | AMPH Amphastar PharmaceuticalsPharmaceuticals | SEC FORM 4 Code A | —3,076 at $0.00 | filing |
| 5 Mar 2024filed 6 Mar 2024 | AMPH Amphastar PharmaceuticalsPharmaceuticals | SEC FORM 4 Sold | $442K9,389 at $47.06 | filing |
| 5 Mar 2024filed 6 Mar 2024 | AMPH Amphastar PharmaceuticalsPharmaceuticals | SEC FORM 4 Sold | $148K3,111 at $47.53 | filing |
| 15 Aug 2023filed 16 Aug 2023 | AMPH Amphastar PharmaceuticalsPharmaceuticals | SEC FORM 4 Sold | $730K12,759 at $57.22 | filing |
| 5 Jun 2023filed 7 Jun 2023 | AMPH Amphastar Pharmaceuticalsoption or derivative · Pharmaceuticals | SEC FORM 4 Code A | —7,016 at $0.00 | filing |
| 5 Jun 2023filed 7 Jun 2023 | AMPH Amphastar PharmaceuticalsPharmaceuticals | SEC FORM 4 Code A | —2,716 at $0.00 | filing |
| 15 May 2023filed 16 May 2023 | AMPH Amphastar PharmaceuticalsPharmaceuticals | SEC FORM 4 Sold | $316K7,500 at $42.18 | filing |
| 10 Jun 2022filed 14 Jun 2022 | AMPH Amphastar Pharmaceuticalsoption or derivative · Pharmaceuticals | SEC FORM 4 Code A | —10,984 at $0.00 | filing |
| 10 Jun 2022filed 14 Jun 2022 | AMPH Amphastar PharmaceuticalsPharmaceuticals | SEC FORM 4 Code A | —4,163 at $0.00 | filing |
| 16 May 2022filed 17 May 2022 | AMPH Amphastar Pharmaceuticalsoption or derivative · Pharmaceuticals | SEC FORM 4 Code M | —10,291 at $0.00 | filing |
| 16 May 2022filed 17 May 2022 | AMPH Amphastar PharmaceuticalsPharmaceuticals | SEC FORM 4 Code M | $176K10,291 at $17.11 | filing |
| 16 May 2022filed 17 May 2022 | AMPH Amphastar PharmaceuticalsPharmaceuticals | SEC FORM 4 Sold | $366K10,291 at $35.61 | filing |
| 16 Mar 2022filed 17 Mar 2022 | AMPH Amphastar Pharmaceuticalsoption or derivative · Pharmaceuticals | SEC FORM 4 Code M | —10,000 at $0.00 | filing |
News
Comparing Amphastar Pharmaceuticals (NASDAQ:AMPH) & Enanta Pharmaceuticals (NASDAQ:ENTA)AMPH · tickerreport.com · 13 Oct 2026
0 headlines in the last 90 days name Michael A. Zasloff; 1 article from the last 14 days about the 1 company they traded most, at most three about any one of them.