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Amphastar Pharmaceuticals, Inc. (AMPH) Stock Fundamental Analysis & AI Rating 2026

AMPH Nasdaq Pharmaceutical Preparations CIK: 0001297184
Updated This Month • Analysis: Mar 19, 2026 • SEC Data: 2025-12-31
Combined AI Rating
BUY
76% Confidence
AGREEMENT
BUY
75% Conf
HOLD
78% Conf

📊 AMPH Key Takeaways

Revenue: $719.9M
Net Margin: 13.6%
Free Cash Flow: $121.2M
Current Ratio: 4.02x
Debt/Equity: 0.79x
EPS: $2.03
AI Rating: BUY with 75% confidence
Amphastar Pharmaceuticals, Inc. (AMPH) receives a BUY rating with 76% confidence from our AI fundamental analysis based on SEC 10-K filings. With revenue of $719.9M, net profit margin of 13.6%, and return on equity (ROE) of 12.4%, Amphastar Pharmaceuticals, Inc. demonstrates strong fundamentals in the Healthcare sector. Below is our complete AMPH stock analysis for 2026.

Is Amphastar Pharmaceuticals, Inc. (AMPH) a Good Investment?

Claude

Amphastar demonstrates solid operational fundamentals with strong profitability (19.5% operating margin, 13.6% net margin) and excellent cash generation (121.2M free cash flow, 16.8% FCF margin). The company maintains a fortress balance sheet with robust liquidity (4.02x current ratio) and manageable leverage (0.79x debt/equity), though top-line growth challenges and declining EPS require monitoring.

ChatGPT

Amphastar Pharmaceuticals shows solid core fundamentals, with healthy profitability, strong free cash flow generation, and very strong liquidity despite a leveraged balance sheet. However, revenue declined slightly year over year, net income was flat, and diluted EPS fell sharply, which points to weaker growth quality and limits conviction until operating momentum improves.

Why Buy Amphastar Pharmaceuticals, Inc. Stock? AMPH Key Strengths

Claude
  • + Exceptional cash flow generation with 121.2M FCF and 16.8% FCF margin demonstrating operational efficiency
  • + Strong profitability metrics across all margins (49.5% gross, 19.5% operating, 13.6% net) indicating pricing power and cost control
  • + Fortress balance sheet with 4.02x current ratio, 2.90x quick ratio, and 16.3x interest coverage providing financial flexibility
  • + Solid ROE of 12.4% and ROA of 6.0% indicating effective capital deployment despite stagnant growth
ChatGPT
  • + Strong liquidity profile with 4.02x current ratio and 2.90x quick ratio
  • + Solid profitability with 49.5% gross margin, 19.5% operating margin, and 13.6% net margin
  • + Healthy cash generation with $156.12M operating cash flow and $121.23M free cash flow

AMPH Stock Risks: Amphastar Pharmaceuticals, Inc. Investment Risks

Claude
  • ! Revenue decline of 1.7% YoY and flat net income growth suggesting loss of market momentum or competitive pressures
  • ! Diluted EPS contracted 33.7% YoY despite stable net income, indicating share dilution from equity issuances or acquisitions
  • ! High debt load of 619.7M (43.5% of assets) limits financial flexibility despite adequate coverage ratios
  • ! Pharmaceutical sector exposure to regulatory risks, patent expirations, and pricing pressures that could impact future margins
ChatGPT
  • ! Revenue contraction of 1.7% suggests limited near-term growth momentum
  • ! Diluted EPS declined 33.7% year over year despite flat net income, indicating weaker per-share earnings quality
  • ! Long-term debt of $619.71M and 0.79x debt-to-equity increase balance sheet risk if earnings soften

Key Metrics to Watch

Claude
  • * Quarterly revenue trends to confirm stabilization or reversal of declining sales
  • * Operating margin sustainability as pricing pressures and competitive dynamics evolve
  • * Free cash flow consistency and capital allocation decisions with existing debt levels
  • * Debt reduction progress relative to operating cash generation capacity
ChatGPT
  • * Revenue growth and operating income trend
  • * Diluted EPS trend and long-term debt reduction

Amphastar Pharmaceuticals, Inc. (AMPH) Financial Metrics & Key Ratios

Revenue
$719.9M
Net Income
$98.1M
EPS (Diluted)
$2.03
Free Cash Flow
$121.2M
Total Assets
$1.6B
Cash Position
$170.2M

💡 AI Analyst Insight

Strong liquidity with a 4.02x current ratio provides a solid financial cushion.

AMPH Profit Margin, ROE & Profitability Analysis

Gross Margin 49.5%
Operating Margin 19.5%
Net Margin 13.6%
ROE 12.4%
ROA 6.0%
FCF Margin 16.8%

AMPH vs Healthcare Sector: How Amphastar Pharmaceuticals, Inc. Compares

How Amphastar Pharmaceuticals, Inc. compares to Healthcare sector averages

Net Margin
AMPH 13.6%
vs
Sector Avg 12.0%
AMPH Sector
ROE
AMPH 12.4%
vs
Sector Avg 15.0%
AMPH Sector
Current Ratio
AMPH 4.0x
vs
Sector Avg 2.0x
AMPH Sector
Debt/Equity
AMPH 0.8x
vs
Sector Avg 0.6x
AMPH Sector

Sector benchmarks are approximate industry averages. Actual sector performance may vary.

Is Amphastar Pharmaceuticals, Inc. Stock Overvalued? AMPH Valuation Analysis 2026

Based on fundamental analysis, Amphastar Pharmaceuticals, Inc. has mixed fundamental signals relative to the Healthcare sector in 2026.

Return on Equity
12.4%
Sector avg: 15%
Net Profit Margin
13.6%
Sector avg: 12%
Revenue Growth
N/A
Year-over-year
Debt/Equity
0.79x
Sector avg: 0.6x

Note: This is a fundamental analysis based on SEC filings. For P/E ratio, price targets, and market-based valuation, consult financial data providers. This is not investment advice.

Amphastar Pharmaceuticals, Inc. Balance Sheet: AMPH Debt, Cash & Liquidity

Current Ratio
4.02x
Quick Ratio
2.90x
Debt/Equity
0.79x
Debt/Assets
51.6%
Interest Coverage
16.31x
Long-term Debt
$619.7M

AMPH Revenue & Earnings Growth: 5-Year Financial Trend

AMPH 5-year financial data: Year 2021: Revenue $437.8M, Net Income $48.9M, EPS $0.98. Year 2022: Revenue $499.0M, Net Income $1.4M, EPS $0.03. Year 2023: Revenue $644.4M, Net Income $62.1M, EPS $1.25. Year 2024: Revenue $732.0M, Net Income $91.4M, EPS $1.74. Year 2025: Revenue $732.0M, Net Income $137.5M, EPS $2.60.
Revenue
Net Income
EPS (right axis)

5-Year Trend Summary: Amphastar Pharmaceuticals, Inc.'s revenue has grown significantly by 67% over the 5-year period, indicating strong business expansion. The most recent EPS of $2.60 reflects profitable operations.

AMPH Revenue Growth, EPS Growth & YoY Performance

Revenue Growth
N/A
Year-over-year
Net Income Growth
N/A
Year-over-year
EPS Growth
N/A
Earnings per share
FCF Margin
16.8%
Free cash flow / Revenue

AMPH Quarterly Earnings & Performance

Quarterly financial performance data for Amphastar Pharmaceuticals, Inc. including revenue, net income, and earnings per share.
Quarter Revenue Net Income EPS
Q3 2025 $191.2M $17.4M $0.37
Q2 2025 $174.4M $25.3M $0.64
Q1 2025 $170.5M $25.3M $0.51
Q3 2024 $180.6M $26.0M $0.78
Q2 2024 $145.7M $26.0M $0.49
Q1 2024 $140.0M $26.0M $0.50
Q3 2023 $120.1M $15.9M $0.30
Q2 2023 $123.5M $17.3M $0.33

Data sourced from SEC EDGAR 10-Q quarterly filings. Figures may represent quarterly or cumulative values.

Amphastar Pharmaceuticals, Inc. Dividends, Buybacks & Capital Allocation

Operating Cash Flow
$156.1M
Cash generated from operations
Stock Buybacks
$75.6M
Shares repurchased (TTM)
Capital Expenditures
$34.9M
Investment in assets
Dividends
None
No dividend program

AMPH SEC Filings: Latest 10-K & 10-Q Analysis

Access official SEC EDGAR filings for Amphastar Pharmaceuticals, Inc. (CIK: 0001297184)

📋 Recent SEC Filings

Date Form Document Action
Apr 13, 2026 DEF 14A amph-20260601xdef14a.htm View →
Mar 17, 2026 4 xslF345X05/form4-03182026_120345.xml View →
Mar 17, 2026 4 xslF345X05/form4-03172026_100316.xml View →
Mar 17, 2026 4 xslF345X05/form4-03172026_100317.xml View →
Mar 17, 2026 4 xslF345X05/form4-03172026_100314.xml View →

Frequently Asked Questions about AMPH

What is the AI rating for AMPH?

Amphastar Pharmaceuticals, Inc. (AMPH) has a Combined AI Rating of BUY from Claude (BUY) and ChatGPT (HOLD) with 76% combined confidence, based on fundamental analysis of SEC EDGAR filings.

What are AMPH's key strengths?

Claude: Exceptional cash flow generation with 121.2M FCF and 16.8% FCF margin demonstrating operational efficiency. Strong profitability metrics across all margins (49.5% gross, 19.5% operating, 13.6% net) indicating pricing power and cost control. ChatGPT: Strong liquidity profile with 4.02x current ratio and 2.90x quick ratio. Solid profitability with 49.5% gross margin, 19.5% operating margin, and 13.6% net margin.

What are the risks of investing in AMPH?

Claude: Revenue decline of 1.7% YoY and flat net income growth suggesting loss of market momentum or competitive pressures. Diluted EPS contracted 33.7% YoY despite stable net income, indicating share dilution from equity issuances or acquisitions. ChatGPT: Revenue contraction of 1.7% suggests limited near-term growth momentum. Diluted EPS declined 33.7% year over year despite flat net income, indicating weaker per-share earnings quality.

What is AMPH's revenue and growth?

Amphastar Pharmaceuticals, Inc. reported revenue of $719.9M.

Does AMPH pay dividends?

Amphastar Pharmaceuticals, Inc. does not currently pay dividends.

Where can I find AMPH SEC filings?

Official SEC filings for Amphastar Pharmaceuticals, Inc. (CIK: 0001297184) including 10-K, 10-Q, and 8-K reports are available on SEC EDGAR.

What is AMPH's EPS?

Amphastar Pharmaceuticals, Inc. has a diluted EPS of $2.03.

How is the AI analysis conducted?

Two independent AI systems — Claude (Anthropic) and ChatGPT (OpenAI) — analyze SEC EDGAR filings including 10-K annual reports and 10-Q quarterly reports. Each AI evaluates financial health, profitability ratios, balance sheet strength, and growth metrics. The combined rating reflects both perspectives for balanced insights.

Is AMPH a good stock to buy right now?

Based on our AI fundamental analysis in April 2026, Amphastar Pharmaceuticals, Inc. has a BUY rating with 76% confidence. The AI analysis suggests favorable fundamentals based on SEC filings. This is not investment advice.

Is AMPH stock overvalued or undervalued?

Valuation metrics for AMPH: ROE of 12.4% (sector avg: 15%), net margin of 13.6% (sector avg: 12%). Compare these metrics with sector averages to assess valuation.

Should I buy AMPH stock in 2026?

Our dual AI analysis gives Amphastar Pharmaceuticals, Inc. a combined BUY rating for 2026. Revenue is data pending, with profitability above sector average. Always conduct your own research.

What is AMPH's free cash flow?

Amphastar Pharmaceuticals, Inc.'s operating cash flow is $156.1M, with capital expenditures of $34.9M. FCF margin is 16.8%.

How does AMPH compare to other Healthcare stocks?

Vs Healthcare sector averages: Net margin 13.6% (avg: 12%), ROE 12.4% (avg: 15%), current ratio 4.02 (avg: 2).

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Disclaimer: This analysis is generated by Claude AI (Anthropic) and ChatGPT (OpenAI) based on publicly available SEC EDGAR filings. It does not include stock price data and should not be considered financial advice. All fundamental data is sourced from SEC public domain filings. Always conduct your own research and consult with a qualified financial advisor before making investment decisions.
Data Source: SEC EDGAR | Analysis Date: Mar 19, 2026 | Data as of: 2025-12-31 | Powered by Claude AI