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CIK 0001297184 · Large accelerated filer

Amphastar Pharmaceuticals, Inc.

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Ticker
AMPH
Exchange
Nasdaq
Industry
Pharmaceutical Preparations
FY end
Dec 31
Entity type
operating
EIN
330702205
Phone
909-980-9484
Business address
11570 SIXTH STREET, RANCHO CUCAMONGA, CA, 91730
Open-market buys, last 90 days
$0
in 0 filings
Open-market sales, last 90 days
$1,232,854
in 4 filings, $918K under 10b5-1 plans

Net −$1,232,854. Shares bought or sold at a price by officers, directors and 10% owners (Form 4 codes P and S). Grants, option exercises and tax withholding aren't counted.

Pace of trading Bought Sold

Who's trading

90 days

  1. PETERS WILLIAM J −$918K CFO, EVP & TREASURER sold 16% of stake
  2. Zhou Rong −$315K SENIOR EVP, PRODUCTION CENTER sold 7% of stake
Date Insider Transaction Shares Price Value Owned after
2023-06-10 Lee Howard Director Shares withheld for taxes −375 $45.67 $17K 145,280
2023-06-05 PRINS RICHARD K Director Grant or award +2,716 47,058
2023-06-05 PRINS RICHARD K Director Grant or award · Stock Option (right to buy) +7,016 7,016
2023-06-05 Petersen Floyd F. Director Grant or award +2,716 82,833
2023-06-05 Petersen Floyd F. Director Grant or award · Stock Option (right to buy) +7,016 7,016
2023-06-05 Gerst Diane G. Director Grant or award +2,716 15,558
2023-06-05 Gerst Diane G. Director Grant or award · Stock Option (right to buy) +7,016 7,016
2023-06-05 ZASLOFF MICHAEL A Director Grant or award +2,716 46,585
2023-06-05 ZASLOFF MICHAEL A Director Grant or award · Stock Option (right to buy) +7,016 7,016
2023-06-05 Lee Howard Director Grant or award +2,716 145,655
2023-06-05 Lee Howard Director Grant or award · Stock Option (right to buy) +7,016 7,016
2023-06-05 Deflin Gayle Director Grant or award +2,716 6,879
2023-06-05 Deflin Gayle Director Grant or award · Stock Option (right to buy) +7,016 7,016
2023-06-04 Liawatidewi Yakob EVP Corp Admin Center Shares withheld for taxes −378 $46.70 $18K 69,669
2023-06-02 PETERS WILLIAM J CFO, EVP & Treasurer Option exercise 10b5-1 +11,000 $13.35 $147K 116,603
2023-06-02 PETERS WILLIAM J CFO, EVP & Treasurer Sale 10b5-1 −11,000 $46.35 $510K 105,603
2023-06-02 PETERS WILLIAM J CFO, EVP & Treasurer Option exercise · Employee Stock Option (right to buy) 10b5-1 −11,000 7,490
2023-06-01 Lee Howard Director Option exercise +16,679 $16.69 $278K 159,618
2023-06-01 Lee Howard Director Sale −16,679 $45.02 $751K 142,939
2023-06-01 Lee Howard Director Option exercise · Stock Option (right to buy) −16,679 0

Page 17 of 81 · 1,602 trades