NASDAQ NMS - GLOBAL MARKET · AMPH
+0.10% · +$0.0200 · Vol 481.3K
Market closed · last close 4:00 PM ET · price as of 16:01:08 ET
Amphastar Pharmaceuticals, Inc

Amphastar Pharmaceuticals, Inc

Pharmaceuticals
$21.04

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About Amphastar Pharmaceuticals, Inc
PHARMACEUTICAL PREPARATIONS
Listed since
2014
Employees
2K
Country
US

Amphastar Pharmaceuticals Inc is a bio-pharmaceutical company focusing on developing, manufacturing, marketing, and selling technically challenging generic and proprietary injectable, inhalation, and intranasal products, as well as insulin active pharmaceutical ingredient (or 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 one reportable segment: pharmaceutical 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.

Key statistics

Reported fields plus Veridion-computed history. Unsourced tiles are omitted.

Open
$21.00
Day high
$22.00
Day low
$20.79
Previous close
$21.02
52W high
$22.00
-4.36% from high
52W low
$18.33
74% of range
Market cap
$926.8M
P/E
12.67×
EPS
$1.66
Shares out
44.1M
Volume
481.3K
VWAP
$21.21
Price history computed in-house
1W
+11.86%
SMA 50 $19.85 · above
SMA 200 $19.85 · above
52W position 74%
Veridion warehouse edge

Warehouse intelligence for AMPH.

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Data ledger
Quote and day range
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Veridion Score
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Financials
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SEC Form 4 ledger

AMPH insider activity

Amphastar Pharmaceuticals, Inc

Score
Coverage building
Pressure
Net selling
Filings
34
Buys / sells
3 / 31
Net value
-$1.9M
Insiders
7
Named filers
LH
Lee Howard
Insider
Leadership
LY
Liawatidewi Yakob
Insider
Leadership
ZR
Zhou Rong
Insider
Leadership
Cluster

No multi-insider buying cluster in the last 90 days

Net pressure

Net selling: -$1.9M across loaded Form 4 rows.

Convergence not established

Loaded official disclosures do not show all three sources aligned on this ticker.

Filing dateTrade dateInsiderTitleTypePriceQtyOwnedValueReceipt
2026-06-032026-06-02Lee HowardInsidersell$18.45769159,350$14KSEC Form 4
2026-03-172026-03-15Liawatidewi YakobInsidersell$18.181,033121,892$19KSEC Form 4
2026-03-172026-03-15Zhou RongInsidersell$18.181,225171,554$22KSEC Form 4
2026-03-172026-03-15Luo Mary Z.Insidersell$18.182,9081,245,125$53KSEC Form 4
2026-03-172026-03-15Luo Mary Z.Insidersell$18.189,7842,990,052$178KSEC Form 4
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Source: SEC EDGAR Form 4. Rows with missing price or quantity are excluded rather than zero-filled.Methodology
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Federal contracts

AMPH contract awards, year to date.

Public federal awards linked to this ticker.

Not disclosed
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Lobbying spend

AMPH lobbying filings, year to date.

Registered lobbying filings matched to Amphastar Pharmaceuticals, Inc.

Not disclosed
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Latest news · AMPH
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