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Side-by-side financial comparison of Amphastar Pharmaceuticals, Inc. (AMPH) and INFINITY NATURAL RESOURCES, INC. (INR). Click either name above to swap in a different company.

Amphastar Pharmaceuticals, Inc. is the larger business by last-quarter revenue ($183.1M vs $115.5M, roughly 1.6× INFINITY NATURAL RESOURCES, INC.). INFINITY NATURAL RESOURCES, INC. runs the higher net margin — 17.3% vs 13.3%, a 4.0% gap on every dollar of revenue.

Amphastar Pharmaceuticals is a publicly traded American speciality pharmaceutical company. It was incorporated in May 2004 and primarily develops, manufactures, and sells inhalation and intranasal products.

AMPH vs INR — Head-to-Head

Bigger by revenue
AMPH
AMPH
1.6× larger
AMPH
$183.1M
$115.5M
INR
Higher net margin
INR
INR
4.0% more per $
INR
17.3%
13.3%
AMPH

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
AMPH
AMPH
INR
INR
Revenue
$183.1M
$115.5M
Net Profit
$24.4M
$20.0M
Gross Margin
46.8%
Operating Margin
19.4%
47.0%
Net Margin
13.3%
17.3%
Revenue YoY
-1.8%
Net Profit YoY
-35.7%
EPS (diluted)
$0.51
$1.33

Green = leading value per metric. Periods may differ when fiscal calendars don't align.

8-Quarter Revenue & Profit Trend

Side-by-side quarterly history. Quarters aligned by calendar period so offset fiscal years line up.

Revenue
AMPH
AMPH
INR
INR
Q4 25
$183.1M
$115.5M
Q3 25
$191.8M
$78.3M
Q2 25
$174.4M
$72.5M
Q1 25
$170.5M
$84.2M
Q4 24
$186.5M
Q3 24
$191.2M
Q2 24
$182.4M
Q1 24
$171.8M
Net Profit
AMPH
AMPH
INR
INR
Q4 25
$24.4M
$20.0M
Q3 25
$17.4M
$10.4M
Q2 25
$31.0M
$18.0M
Q1 25
$25.3M
$-34.6M
Q4 24
$38.0M
Q3 24
$40.4M
Q2 24
$37.9M
Q1 24
$43.2M
Gross Margin
AMPH
AMPH
INR
INR
Q4 25
46.8%
Q3 25
51.4%
Q2 25
49.6%
Q1 25
50.0%
Q4 24
46.5%
Q3 24
53.3%
Q2 24
52.2%
Q1 24
52.4%
Operating Margin
AMPH
AMPH
INR
INR
Q4 25
19.4%
47.0%
Q3 25
13.2%
30.5%
Q2 25
24.2%
29.9%
Q1 25
21.9%
-104.5%
Q4 24
24.2%
Q3 24
29.8%
Q2 24
30.3%
Q1 24
27.9%
Net Margin
AMPH
AMPH
INR
INR
Q4 25
13.3%
17.3%
Q3 25
9.0%
13.3%
Q2 25
17.8%
24.8%
Q1 25
14.8%
-41.1%
Q4 24
20.4%
Q3 24
21.1%
Q2 24
20.8%
Q1 24
25.1%
EPS (diluted)
AMPH
AMPH
INR
INR
Q4 25
$0.51
$1.33
Q3 25
$0.37
$0.65
Q2 25
$0.64
$1.18
Q1 25
$0.51
$-2.27
Q4 24
$0.74
Q3 24
$0.78
Q2 24
$0.73
Q1 24
$0.81

Balance Sheet & Financial Strength

Snapshot of each company's liquidity, leverage and book value from the latest quarter.

Metric
AMPH
AMPH
INR
INR
Cash + ST InvestmentsLiquidity on hand
$282.8M
$2.8M
Total DebtLower is stronger
$608.7M
$55.0K
Stockholders' EquityBook value
$788.8M
$307.1M
Total Assets
$1.6B
$1.2B
Debt / EquityLower = less leverage
0.77×
0.00×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
AMPH
AMPH
INR
INR
Q4 25
$282.8M
$2.8M
Q3 25
$276.2M
$4.6M
Q2 25
$231.8M
$6.3M
Q1 25
$236.9M
$4.9M
Q4 24
$221.6M
Q3 24
$250.5M
Q2 24
$217.8M
Q1 24
$289.6M
Total Debt
AMPH
AMPH
INR
INR
Q4 25
$608.7M
$55.0K
Q3 25
$608.6M
Q2 25
$607.7M
Q1 25
$603.9M
$123.0K
Q4 24
$601.6M
Q3 24
$596.4M
Q2 24
$586.9M
Q1 24
$594.0M
Stockholders' Equity
AMPH
AMPH
INR
INR
Q4 25
$788.8M
$307.1M
Q3 25
$776.7M
$288.6M
Q2 25
$757.5M
$10.1M
Q1 25
$751.3M
$-52.2M
Q4 24
$732.3M
Q3 24
$727.7M
Q2 24
$713.3M
Q1 24
$672.4M
Total Assets
AMPH
AMPH
INR
INR
Q4 25
$1.6B
$1.2B
Q3 25
$1.7B
$1.1B
Q2 25
$1.6B
$1.0B
Q1 25
$1.6B
$953.9M
Q4 24
$1.6B
Q3 24
$1.5B
Q2 24
$1.5B
Q1 24
$1.6B
Debt / Equity
AMPH
AMPH
INR
INR
Q4 25
0.77×
0.00×
Q3 25
0.78×
Q2 25
0.80×
Q1 25
0.80×
Q4 24
0.82×
Q3 24
0.82×
Q2 24
0.82×
Q1 24
0.88×

Cash Flow & Capital Efficiency

How much cash each business actually produces after reinvestment. Cash flow is harder to manipulate than net income.

Metric
AMPH
AMPH
INR
INR
Operating Cash FlowLast quarter
$32.9M
$75.1M
Free Cash FlowOCF − Capex
$24.6M
FCF MarginFCF / Revenue
13.4%
Capex IntensityCapex / Revenue
4.5%
Cash ConversionOCF / Net Profit
1.35×
3.75×
TTM Free Cash FlowTrailing 4 quarters
$121.2M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
AMPH
AMPH
INR
INR
Q4 25
$32.9M
$75.1M
Q3 25
$52.6M
$42.1M
Q2 25
$35.6M
$70.4M
Q1 25
$35.1M
$74.2M
Q4 24
$29.0M
Q3 24
$60.0M
Q2 24
$69.1M
Q1 24
$55.3M
Free Cash Flow
AMPH
AMPH
INR
INR
Q4 25
$24.6M
Q3 25
$47.2M
Q2 25
$25.0M
Q1 25
$24.4M
Q4 24
$16.6M
Q3 24
$46.2M
Q2 24
$63.1M
Q1 24
$46.5M
FCF Margin
AMPH
AMPH
INR
INR
Q4 25
13.4%
Q3 25
24.6%
Q2 25
14.3%
Q1 25
14.3%
Q4 24
8.9%
Q3 24
24.1%
Q2 24
34.6%
Q1 24
27.1%
Capex Intensity
AMPH
AMPH
INR
INR
Q4 25
4.5%
Q3 25
2.8%
Q2 25
6.1%
Q1 25
6.3%
Q4 24
6.7%
Q3 24
7.2%
Q2 24
3.3%
Q1 24
5.1%
Cash Conversion
AMPH
AMPH
INR
INR
Q4 25
1.35×
3.75×
Q3 25
3.03×
4.04×
Q2 25
1.15×
3.91×
Q1 25
1.39×
Q4 24
0.76×
Q3 24
1.48×
Q2 24
1.82×
Q1 24
1.28×

Financial Flow Comparison

Revenue → gross profit → operating profit → net profit for each company.

Revenue Breakdown by Segment

AMPH
AMPH

Other Products$62.4M34%
Baqsimi$46.7M26%
Primatenemist$27.9M15%
Epinephrine$17.1M9%
Lidocaine$14.9M8%
Glucagon$14.1M8%

INR
INR

Oil Reserves$54.0M47%
Natural Gas Reserves$46.8M41%
Natural Gas Liquids Reserves$14.7M13%

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