PETERS WILLIAM J

PrivateCIK: 1263136
Location

RANCHO CUCAMONGA, CA

PETERS WILLIAM J (CFO, EVP & TREASURER) reported 1 transaction at AMPHASTAR PHARMACEUTICALS, INC.

Review the transaction codes below to understand the nature of each event.

InsiderPETERS WILLIAM JCIK 1263136
DirectorOfficer· CFO, EVP & TREASURER
Since Mar 2026
-1.97K
Net shares
Net seller
$35.9K
Total sold
0
Open market trades
0B · 0S
1
Total transactions
1.97K disposed
Non-Derivative Transactions1

Common Stock

Direct
F · Tax Withholding

Shares

1.97K

Price / share

$18.18

Trade value

$35.87K

% of position

1.1%
3/15/2026
177.04K175.06K
Total

Net shares

1.97K

Net value

-$35.87K

Derivative Transactions0
No derivative transactions reported
PETERS WILLIAM J — Insider Transaction (Form 4) Filed Mar 17, 2026 | Finecho