InsiderClue
Stocks · Health care · Pharmaceutical Preparations

Amphastar Pharmaceuticals, Inc.

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

What the insiders did Net selling

Individual transactions

10
Insider
Date
Role
Action
Shares
Price
Amount
William J Peters
21 Sep 2026
CFO, EVP & Treasurer
Sold on a plan
4,139
$25.00
$103.48K
Rong Zhou
16 Sep 2026
Senior EVP, Production Center
Sold after exercise
10,000
$23.94
$239.40K
Rong Zhou
2 Sep 2026
Senior EVP, Production Center
Sell
3,187
$23.63
$75.31K
Richard K Prins
11 Aug 2026
Director
Sell
7,973
$20.30
$161.85K
William J Peters
7 Aug 2026
CFO, EVP & Treasurer
Sold after exercise
8,180
$22.48
$183.89K
Rong Zhou
17 Dec 2025
Senior EVP, Production Center
Sold after exercise
9,787
$26.20
$256.38K
Floyd F. Petersen
12 Dec 2025
Director
Sell
2,426
$25.92
$62.89K
Floyd F. Petersen
11 Dec 2025
Director
Sell
1,737
$25.69
$44.62K
Richard K Prins
25 Nov 2025
Director
Sold after exercise
4,179
$27.10
$113.25K
Floyd F. Petersen
13 Nov 2025
Director
Sold after exercise
16,679
$26.49
$441.84K

What was left out

Form 4 filings counted 32
Amendments (4/A) skipped 0
Filings about a different issuer 0
Unreadable filings 0
Joint filings 4
Sales on a Rule 10b5-1 plan 1
Sales straight out of an exercise 5
Sales at will 4
Transactions with no price 0
Shares from compensation/vesting 560,768
History held since 19 Aug 2014