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Amphastar Pharmaceuticals, Inc.

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Amphastar Pharmaceuticals, Inc.

AMPH·NASDAQ·Life Sciences·CIK 0001297184

The company is a biopharmaceutical company that develops, manufactures, and sells complex generic and proprietary injectable, inhalation, and intranasal products, along with active pharmaceutical ingredients (API). It currently manufactures and sells over 25 prescription pharmaceutical products and one over-the-counter product, Primatene MIST®. Its top products by net revenues include BAQSIMI® glucagon nasal powder, Primatene MIST®, glucagon, epinephrine, and lidocaine. In June 2023, the company acquired BAQSIMI®, a nasally administered glucagon for severe hypoglycemia in people with diabetes, available in the United States and 26 international markets. The FDA approved its albuterol sulfate inhalation aerosol in May 2024, launched in August 2024. In August 2025, the FDA approved its iron sucrose injection, USP 50mg/2.5mL, 100mg/5mL, and 200mg/10mL in single-dose vials, launched in August 2025. In December 2025, the FDA approved its teriparatide injection, USP 560mcg/2.24mL single-patient-use prefilled pen, launched in December 2025. In February 2026, the FDA approved its Ipratropium Bromide HFA inhalation aerosol, 17 mcg/actuation, with a planned launch early in the second quarter of 2026. For the years ended December 31, 2025, 2024, and 2023, net revenues were $719.9 million, $732.0 million, and $644.4 million, respectively. Net income for the same periods was $98.1 million, $159.5 million, and $137.5 million, respectively. The company is developing a portfolio of generic abbreviated new drug applications (ANDAs), biologics license applications (BLAs), including biosimilar insulin product candidates, and proprietary product candidates. One ANDA and one biosimilar insulin candidate are currently filed with the FDA.

Amphastar Pharmaceuticals, Inc. (NASDAQ:AMPH) is a publicly traded company in the Life Sciences sector. Wiseek has independently scored 13 items for AMPH at importance 7 or higher on its 1–10 market-impact scale. Its most recent item scored 7 or higher is dated 2026-08-06, rated 8/10. Across its 13 most recent items scored 7 or higher, the top rating is 9/10, with 11 rated 8 or above. Recent SEC coverage for AMPH spans 10-Q, 8-K, 10-K.

Recent high-impact activity:

  • Amphastar Q2 Revenue Climbs 5% to $183.9M, GAAP EPS $0.67; BAQSIMI Milestone Triggers $100M Payment
  • Amphastar Q2 Revenue Hits $183.9M, BAQSIMI® Milestone Triggers $100M Lilly Payment
  • Amphastar Q4 Revenue Flat, EPS Miss Sends Shares Down 18.4%
  • FDA Warning Letter Hits Amphastar Subsidiary for Manufacturing Compliance
  • FDA Issues Warning Letter to Amphastar Subsidiary Over Manufacturing Violations

Financial Snapshot

Fiscal year ended December 31, 2025
Revenue
$719.89M
Net Income
$98.09M
Diluted EPS
$2.03
Op. Cash Flow
$156.12M
Free Cash Flow
$121.23M
Gross Profit
$356.06M
Operating Income
$140.4M
Cash & Equivalents
$170.18M
Debt / Equity
0.00×
Net Margin
13.6%
Shares Outstanding
45.65M sh
Source: 10-K · filed 2026-02-26 · accession 0001297184-26-000009

Short Interest & Short Volume

10.75 days to cover

FINRA reported short interest of 4,994,808 shares in AMPH as of the September 15, 2026 settlement, a 2.7% decrease from the prior period — about 10.8 days to cover at its recent average daily volume. On October 2, 2026, 78.0% of AMPH volume reported to FINRA trade-reporting facilities was marked short.

Short interest (bi-monthly positions)4,994,808 shares as of September 15, 2026
Change vs prior period▼ 2.7%
Days to cover10.75 at avg daily volume of 464,708
Daily short volume (FINRA facilities)78.0% of 148,229 shares on October 2, 2026
5-day average short volume64.6%

Daily short sale volume covers trades reported to FINRA trade-reporting facilities and is not the same as short interest (bi-monthly reported positions). Source: FINRA — FINRA is the owner and source of this short interest and short sale volume data; it may not be redistributed.

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$25.43
52-week range · as of 2026-08-06 $16.64 – $31.26
Market cap
$1.08B
Volume
374.2K (0.8× avg)
3-mo avg 483.9K
Live data · 2026-10-05 02:48 UTC · Market closed

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feed AMPH - Latest Insights

AMPH
Aug 06, 2026, 4:50 PM EDT
Filing Type: 10-Q
Importance Score:
8
Price at Filing: $20.35
Real-time Price: $25.43 info
Change: +$5.08 (+25%) info
Market Cap: $1.082B info
AMPH
Aug 06, 2026, 4:05 PM EDT
Source: PR Newswire
Importance Score:
8
Price at Filing: $20.35
Real-time Price: $25.43 info
Change: +$5.08 (+25%) info
Market Cap: $1.082B info
AMPH
Jul 13, 2026, 7:20 AM EDT
Source: Wiseek News
Importance Score:
8
Price at Filing: $18.72
Real-time Price: $25.43 info
Change: +$6.71 (+36%) info
Market Cap: $1.082B info
AMPH
Jul 08, 2026, 6:03 AM EDT
Source: Wiseek News
Importance Score:
8
Price at Filing: $20.00
Real-time Price: $25.43 info
Change: +$5.43 (+27%) info
Market Cap: $1.082B info
AMPH
Jul 07, 2026, 8:03 PM EDT
Filing Type: 8-K
Importance Score:
8
Price at Filing: $20.00
Real-time Price: $25.43 info
Change: +$5.43 (+27%) info
Market Cap: $1.082B info
AMPH
Jun 16, 2026, 8:50 AM EDT
Source: Reuters
Importance Score:
8
Price at Filing: $19.85
Real-time Price: $25.43 info
Change: +$5.58 (+28%) info
Market Cap: $1.082B info
AMPH
May 07, 2026, 4:48 PM EDT
Filing Type: 10-Q
Importance Score:
9
Price at Filing: $19.98
Real-time Price: $25.43 info
Change: +$5.45 (+27%) info
Market Cap: $1.082B info
AMPH
May 07, 2026, 4:22 PM EDT
Filing Type: 8-K
Importance Score:
8
Price at Filing: $21.58
Real-time Price: $25.43 info
Change: +$3.85 (+18%) info
Market Cap: $1.082B info
AMPH
May 07, 2026, 4:05 PM EDT
Source: Access Newswire
Importance Score:
8
Price at Filing: $24.56
Real-time Price: $25.43 info
Change: +$0.870 (+4%) info
Market Cap: $1.082B info
AMPH
Mar 16, 2026, 6:13 AM EDT
Source: Wiseek News
Importance Score:
8
Price at Filing: $18.18
Real-time Price: $25.43 info
Change: +$7.25 (+40%) info
Market Cap: $1.082B info
AMPH
Mar 16, 2026, 6:00 AM EDT
Filing Type: 8-K
Importance Score:
8
Price at Filing: $18.18
Real-time Price: $25.43 info
Change: +$7.25 (+40%) info
Market Cap: $1.082B info
AMPH
Feb 26, 2026, 4:41 PM EST
Filing Type: 10-K
Importance Score:
7
Price at Filing: $22.70
Real-time Price: $25.43 info
Change: +$2.73 (+12%) info
Market Cap: $1.082B info
AMPH
Jan 12, 2026, 5:15 PM EST
Filing Type: 8-K
Importance Score:
7
Price at Filing: $29.13
Real-time Price: $25.43 info
Change: -$3.70 (-13%) info
Market Cap: $1.082B info
Research tools: Filing Impact Index Dilution Tracker Split Calendar Open Datasets