Who
Diane G. Gerst
Director
Company insider
Files Form 4 as: EVP, QA & Regulatory Affairs, Amphastar Pharmaceuticals.
In numbers
- Trades disclosed
- 77
- Buys
- 0
- Sells
- 19
- Bought
- $0
- Sold
- $1.6M
- Companies
- 1
- Companies where not an officer
- 0
- First trade
- 26 Mar 2015
- 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 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 |
| 18 Jul 2022filed 19 Jul 2022 | AMPH Amphastar Pharmaceuticalsoption or derivative · Pharmaceuticals | SEC FORM 4 Code M | —1,520 at $0.00 | filing |
| 18 Jul 2022filed 19 Jul 2022 | AMPH Amphastar PharmaceuticalsPharmaceuticals | SEC FORM 4 Code M | $31K1,520 at $20.08 | filing |
| 18 Jul 2022filed 19 Jul 2022 | AMPH Amphastar PharmaceuticalsPharmaceuticals | SEC FORM 4 Sold | $57K1,520 at $37.23 | filing |
| 11 Jul 2022filed 12 Jul 2022 | AMPH Amphastar Pharmaceuticalsoption or derivative · Pharmaceuticals | SEC FORM 4 Code M | —1,521 at $0.00 | filing |
| 11 Jul 2022filed 12 Jul 2022 | AMPH Amphastar PharmaceuticalsPharmaceuticals | SEC FORM 4 Code M | $31K1,521 at $20.08 | filing |
| 11 Jul 2022filed 12 Jul 2022 | AMPH Amphastar PharmaceuticalsPharmaceuticals | SEC FORM 4 Sold | $55K1,521 at $36.26 | filing |
| 5 Jul 2022filed 6 Jul 2022 | AMPH Amphastar Pharmaceuticalsoption or derivative · Pharmaceuticals | SEC FORM 4 Code M | —1,813 at $0.00 | filing |
| 5 Jul 2022filed 6 Jul 2022 | AMPH Amphastar PharmaceuticalsPharmaceuticals | SEC FORM 4 Code M | $36K1,813 at $20.08 | filing |
| 5 Jul 2022filed 6 Jul 2022 | AMPH Amphastar PharmaceuticalsPharmaceuticals | SEC FORM 4 Sold | $63K1,813 at $35.00 | filing |
| 30 Jun 2022filed 5 Jul 2022 | AMPH Amphastar Pharmaceuticalsoption or derivative · Pharmaceuticals | SEC FORM 4 Code M | —3,333 at $0.00 | filing |
News
Amphastar Pharmaceuticals (NASDAQ:AMPH) Stock Rating Cut to Buy at Wall Street ZenAMPH · dailypolitical.com · 25 Oct 2026Analyzing Amphastar Pharmaceuticals (NASDAQ:AMPH) and ImmuCell (NASDAQ:ICCC)AMPH · dailypolitical.com · 24 Oct 2026Comparing Amphastar Pharmaceuticals (NASDAQ:AMPH) & Enanta Pharmaceuticals (NASDAQ:ENTA)AMPH · tickerreport.com · 13 Oct 2026
0 headlines in the last 90 days name Diane G. Gerst; 3 articles from the last 14 days about the 1 company they traded most, at most three about any one of them.