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
2024-08-13 Sale -3915.00 PRINS RICHARD K
2024-08-02 Sale -10282.00 PETERS WILLIAM J
2024-06-28 Sale -2961.00 PETERS WILLIAM J
2024-06-11 Sale -3000.00 Petersen Floyd F.
2024-06-11 Sale -100000.00 Zhang Jack Y.
2024-06-05 Sale -272.00 Liawatidewi Yakob
2024-06-05 Sale -3076.00 Deflin Gayle
2024-06-05 Sale -3076.00 Gerst Diane G.
2024-06-05 Sale -3076.00 Lee Howard
2024-06-05 Sale -3076.00 ZASLOFF MICHAEL A

SEC Filings


Form Type Description Pages Date
4 Insider transactions 1 Aug 04, 2025
4 Insider transactions 1 Jul 22, 2025
3 Insider transactions 2 Jul 22, 2025
8-k 8K-related 12 Jul 21, 2025
4 Insider transactions 1 Jul 03, 2025
4 Insider transactions 1 Jun 16, 2025
4 Insider transactions 1 Jun 04, 2025
4 Insider transactions 1 Jun 04, 2025
4 Insider transactions 1 Jun 04, 2025
4 Insider transactions 1 Jun 04, 2025

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