Institutional shares held 34.6 Million
26.5K calls
7.9K puts
Total value of holdings $845M
$646K calls
$192K puts
Market Cap $1.2B
49,015,200 Shares Out.
Institutional ownership 70.66%
# of Institutions 265


Latest Institutional Activity in AMPH

Top Purchases

Q1 2025
Boston Trust Walden Corp Shares Held: 1.22M ($29.7M)
Q1 2025
Cx Institutional Shares Held: 82.1K ($2.01M)
Q1 2025
Steel Peak Wealth Management LLC Shares Held: 55.8K ($1.36M)
Q1 2025
Bridge City Capital, LLC Shares Held: 116K ($2.83M)
Q1 2025
Victory Capital Management Inc Shares Held: 81.1K ($1.98M)

Top Sells

Q1 2025
Bessemer Group Inc Shares Held: 561 ($13.7K)
Q1 2025
Assenagon Asset Management S.A. Shares Held: 15.2K ($371K)
Q1 2025
Gamma Investing LLC Shares Held: 1.33K ($32.5K)
Q1 2025
Envestnet Asset Management Inc Shares Held: 9.94K ($243K)
Q1 2025
Shaker Investments LLC Shares Held: 8.48K ($207K)

About AMPH

Amphastar Pharmaceuticals, Inc., a bio-pharmaceutical company, develops, manufactures, markets, and sells generic and proprietary injectable, inhalation, and intranasal products in the United States, China, and France. The company operates through two segments, Finished Pharmaceutical Products and API. It offers Primatene Mist, an over-the-counter epinephrine inhalation product for the temporary relief of mild symptoms of intermittent asthma; Enoxaparin, a low molecular weight heparin to prevent and treat deep vein thrombosis; Naloxone for opioid overdose; Glucagon for injection emergency kit; and Cortrosyn, a lyophilized powder for use as a diagnostic agent in the screening of patients with adrenocortical insufficiency. The company also provides Amphadase, a bovine-sourced hyaluronidase injection to absorb and disperse other injected drugs; Epinephrine injection for the emergency treatment of allergic reactions; lidocaine jelly, an anesthetic product for urological procedures; lidocaine topical solution for various procedures; phytonadione injection, a vitamin K1 injection for newborn babies; emergency syringe products for emergency use in hospital settings; morphine injection for use with patient controlled analgesia pumps; and lorazepam injection for surgery and medical procedures. In addition, it offers neostigmine methylsulfate injection to treat myasthenia gravis and to reverse the effects of muscle relaxants; and Isoproterenol hydrochloride injection for mild or transient episodes of heart block. Further, the company distributes recombinant human insulin active pharmaceutical ingredients (API) and porcine insulin API. It serves hospitals, care facilities, alternate care sites, clinics, and doctors' offices. The company was founded in 1996 and is headquartered in Rancho Cucamonga, California.


Insider Transactions at AMPH

Insider Transaction List

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Date Insider Transaction Ownership Type Shares Traded Value / Price
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Last 12 Months Summary

Buy / Acquisition
1.06M Shares
From 15 Insiders
Grant, award, or other acquisition 266K shares
Exercise of conversion of derivative security 791K shares
Sell / Disposition
819K Shares
From 12 Insiders
Open market or private sale 100K shares
Payment of exercise price or tax liability 468K shares
Bona fide gift 251K shares

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P - Open market or private purchase×
S - Open market or private sale×
V - Transaction voluntarily reported earlier than required×
A - Grant, award, or other acquisition×
D - Sale (or disposition) back to the issuer×
F - Payment of exercise price or tax liability×
I - Discretionary transaction×
M - Exercise of conversion of derivative security×
C - Conversion of derivative security×
E - Expiration of short derivative position×
H - Expiration (or cancellation) of long derivative position with value received×
O - Exercise of out-of-the-money derivative securities×
X - Exercise of in-the-money or at-the-money derivatives securities×
G - Bona fide gift×
L - Small Acquisition×
W - Acquisition or disposition by will or laws×
Z - Deposit into or withdrawal from voting trust×
J - Other acquisition or disposition×
K - Transaction in equity swap or similar instrument×
U - Disposition due to a tender of shares in a change of control transaction×
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