Amphastar Pharmaceuticals, Inc. (NASDAQ: AMPH) Stock Information | RedChip
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Amphastar Pharmaceuticals, Inc. (NASDAQ: AMPH)
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$19.72
+1.0220 ( +5.47% ) 394.0K

Amphastar Pharmaceuticals Inc is a biopharmaceutical company that focuses on developing, manufacturing, marketing, and selling technically challenging generic and proprietary injectable, inhalation, and intranasal products. Additionally, the company sells insulin API products. The company's finished products are used in hospital or urgent care clinical settings and are contracted and distributed through group purchasing organizations and drug wholesalers. The company has two reportable segments finished pharmaceutical products and API products. Geographically the business presence of the firm is seen in the United States, China and France of which the U.S. accounts for the majority of the revenue.

Market Data


Open $19.72
Previous Close $18.70
Volume 394.0K
Market Cap $824.54M
Day Range $17.98 - $20.16
52 Week Range $16.65 - $31.26
Shares Outstanding 44.09M
Change % +5.47%
Net Change ▲ 1.0220
Insider Ownership -0.03%
Exchange NASDAQ
SectorMiscellaneous
IndustryNone
IPO Year2014
CountryUnited States
UnderwriterIPO Intelligence Only

Insider Ownership Transactions

Total Amount Purchased: -137,197.00

Date Type Amount Purchased Purchaser
2024-06-05 Sale -3076.00 PRINS RICHARD K
2024-06-05 Sale -3076.00 ZASLOFF MICHAEL A
2024-05-21 Sale -387.00 PETERS WILLIAM J
2024-05-02 Sale -500.00 Petersen Floyd F.

SEC Filings


Form Type Description Pages Date
10-q Quarterly Reports 96 Nov 06, 2025
8-k 8K-related 13 Nov 06, 2025
4 Insider transactions 1 Nov 05, 2025
8-k 8K-related 12 Oct 24, 2025
4 Insider transactions 1 Oct 02, 2025
8-k 8K-related 12 Sep 18, 2025
4 Insider transactions 1 Sep 03, 2025
8-k 8K-related 13 Aug 12, 2025
10-q Quarterly Reports 95 Aug 07, 2025
8-k 8K-related 13 Aug 07, 2025

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