PRINS RICHARD K 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: 0001047579-26-000003
Director
Since Aug 2018
+24.01K
Net shares
Net buyer
$0.00
Total acquired
0
Open market trades
0B · 0S
3
Total transactions
25.51K acquired · 1.50K disposed
Non-Derivative Transactions2
Common Stock
Direct
Shares
−1.50K
Price / share
—
Trade value
—
% of position
4.8%
8/19/2024
30.95K→29.45K
Common Stock
Direct
Shares
+8.14K
Price / share
—
Trade value
—
% of position
27.6%
6/1/2026
29.45K→37.60K
Total
Net shares
+6.64K
Net value
$0.00
| Security | Date | Type | Shares | Price / Share | Trade Value | % of Position | Held Before | Held After |
|---|---|---|---|---|---|---|---|---|
| Common Stock Direct | 8/19/2024 | G · Gift | −1.50K | — | — | 4.8% | 30.95K | 29.45K |
| Common Stock Direct | 6/1/2026 | A · Award | +8.14K | — | — | 27.6% | 29.45K | 37.60K |
| Total | +6.64K | $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 |