Stocks · Health care · Pharmaceutical Preparations

Amphastar Pharmaceuticals, Inc.

AMPH Clue Score63
United States Fiscal year ends December CIK 0001297184 Results filed 5 Nov 2026

What the insiders did Net selling

Insider
Date
Role
Action
Shares
Price
Amount
Jack Y. Zhang
13 Jun 2025
CEO & Chief Scientific Officer
Exercised, kept
200,000
$13.03
$2.61M
Jack Y. Zhang
14 Mar 2025
CEO & Chief Scientific Officer
Exercised, kept indirect
211,213
$14.69
$3.10M
Jack Y. Zhang
14 Mar 2025
CEO & Chief Scientific Officer
Exercised, kept
290,477
$14.69
$4.27M
Jack Y. Zhang
13 Sep 2024
CEO & Chief Scientific Officer
Exercised, kept
100,000
$14.69
$1.47M
Jack Y. Zhang
10 Jun 2024
CEO & Chief Scientific Officer
Exercised, kept
100,000
$14.69
$1.47M
Jack Y. Zhang
15 Mar 2024
CEO & Chief Scientific Officer
Exercised, kept indirect
310,930
$12.46
$3.87M
Jack Y. Zhang
15 Mar 2024
CEO & Chief Scientific Officer
Exercised, kept
722,046
$12.46
$9.00M
Rong Zhou
20 Jun 2023
EVP, Production Center
Exercised, kept
9,651
$11.33
$109.35K
Showing 250 of 408 transactions. The figures above use every one of them.

What was left out

Form 4 filings counted 482
Amendments (4/A) skipped 1
Filings about a different issuer 0
Unreadable filings 0
Joint filings 49
Sales on a Rule 10b5-1 plan 40
Sales straight out of an exercise 199
Sales at will 149
Transactions with no price 0
Shares from compensation/vesting 15,408,925
Sales filed before the plan box existed 131
History held since 19 Aug 2014