PRINS RICHARD K sold 21.2% of their position (7.97K shares) of AMPHASTAR PHARMACEUTICALS, INC. on the open market
Open‑market sale worth $161.9K — a significant reduction. Review remaining holdings and any 10b5‑1 plan disclosures.
S · 1 sale
Filed: 8/12/2026ACC: 0001047579-26-000005
Director
Since Aug 2018
-7.97K
Net shares
Net seller
$161.9K
Total sold
1
Open market trades
0B · 1S
1
Total transactions
7.97K disposed
Non-Derivative Transactions1
Common Stock
Direct
Shares
−7.97K
Price / share
$20.30
Trade value
$161.85K
% of position
21.2%
8/11/2026
37.60K→29.63K
Total
Net shares
−7.97K
Net value
-$161.85K
| Security | Date | Type | Shares | Price / Share | Trade Value | % of Position | Held Before | Held After |
|---|---|---|---|---|---|---|---|---|
| Common Stock Direct | 8/11/2026 | S · Sale | −7.97K | $20.30 | $161.85K | 21.2% | 37.60K | 29.63K |
| Total | −7.97K | -$161.85K | ||||||
Derivative Transactions0
No derivative transactions reported