GERST DIANE G. received a stock award from AMPHASTAR PHARMACEUTICALS, INC.
Compensation award — not an open‑market transaction. Less informative as a directional signal.
A · 1 award
Filed: 6/4/2026ACC: 0001611283-26-000003
Director
Since Jun 2019
+25.51K
Net shares
Net buyer
$0.00
Total acquired
0
Open market trades
0B · 0S
2
Total transactions
25.51K acquired
Non-Derivative Transactions1
Common Stock
Direct
Shares
+8.14K
Price / share
—
Trade value
—
% of position
34.3%
6/1/2026
23.76K→31.90K
Total
Net shares
+8.14K
Net value
$0.00
| Security | Date | Type | Shares | Price / Share | Trade Value | % of Position | Held Before | Held After |
|---|---|---|---|---|---|---|---|---|
| Common Stock Direct | 6/1/2026 | A · Award | +8.14K | — | — | 34.3% | 23.76K | 31.90K |
| Total | +8.14K | $0.00 | ||||||
Derivative Transactions1
Stock Option (right to buy)
Direct
Converts to
Common Stock
17.36K shares
Shares
+17.36K
Strike price
18.42
Held after
17.36K
Exercisable
—
6/1/2026
| Security | Converts To | Date | Type | Shares | Strike Price | Exercisable | Held After |
|---|---|---|---|---|---|---|---|
| Stock Option (right to buy) Direct | Common Stock17.36K shares | 6/1/2026 | A · Award | +17.36K | 18.42 | — | 17.36K |