Diane G. Gerst
CIK 1611283 · EVP, QA & Regulatory Affairs · last filed 2026-06-03
Diane G. Gerst is an EVP, QA & Regulatory Affairs who has filed 36 SEC Form 4 insider transactions across 1 company since 2015. The most recent filing, for AMPH, was dated Jun 3, 2026. Across all open-market trades the lifetime net is −$1.6M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $640.9K across reported positions.
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
$640.9K
1
36
-$1.57M
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| AMPH | Director | 31,899 | $20.09 | $640.9K | -$1.57M | 36 | 2026-06-03 |
Recent Filings
36 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-06-03 | AMPH | Grant (A) | +8,143 | $0 | EDGAR |
| 2025-06-04 | AMPH | Grant (A) | +5,122 | $0 | EDGAR |
| 2024-06-05 | AMPH | Grant (A) | +3,076 | $0 | EDGAR |
| 2023-06-07 | AMPH | Grant (A) | +2,716 | $0 | EDGAR |
| 2022-07-19 | AMPH | Mixed | — | -$26.1K | EDGAR |
| 2022-07-12 | AMPH | Mixed | — | -$24.6K | EDGAR |
| 2022-07-06 | AMPH | Mixed | — | -$27.1K | EDGAR |
| 2022-07-05 | AMPH | Mixed | — | -$76.9K | EDGAR |
| 2022-06-14 | AMPH | Grant (A) | +4,163 | $0 | EDGAR |
| 2021-06-08 | AMPH | Grant (A) | +3,009 | $0 | EDGAR |