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

Amphastar Pharmaceuticals, Inc. is the larger business by last-quarter revenue ($183.1M vs $181.2M, roughly 1.0× CLEANSPARK, INC.). Amphastar Pharmaceuticals, Inc. runs the higher net margin — 13.3% vs -209.0%, a 222.4% gap on every dollar of revenue. On growth, CLEANSPARK, INC. posted the faster year-over-year revenue change (11.6% vs -1.8%). Amphastar Pharmaceuticals, Inc. produced more free cash flow last quarter ($24.6M vs $-198.1M). Over the past eight quarters, CLEANSPARK, INC.'s revenue compounded faster (106.4% CAGR vs 3.2%).

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.

CleanSpark, Inc. is a U.S.-headquartered sustainable technology company operating two core business segments: low-carbon Bitcoin mining powered primarily by renewable and stranded energy resources, and end-to-end microgrid design, deployment, and operation services for commercial, industrial, and public sector clients across North America.

AMPH vs CLSK — Head-to-Head

Bigger by revenue
AMPH
AMPH
1.0× larger
AMPH
$183.1M
$181.2M
CLSK
Growing faster (revenue YoY)
CLSK
CLSK
+13.5% gap
CLSK
11.6%
-1.8%
AMPH
Higher net margin
AMPH
AMPH
222.4% more per $
AMPH
13.3%
-209.0%
CLSK
More free cash flow
AMPH
AMPH
$222.7M more FCF
AMPH
$24.6M
$-198.1M
CLSK
Faster 2-yr revenue CAGR
CLSK
CLSK
Annualised
CLSK
106.4%
3.2%
AMPH

Income Statement — Q4 FY2025 vs Q1 FY2026

Metric
AMPH
AMPH
CLSK
CLSK
Revenue
$183.1M
$181.2M
Net Profit
$24.4M
$-378.7M
Gross Margin
46.8%
47.2%
Operating Margin
19.4%
-174.7%
Net Margin
13.3%
-209.0%
Revenue YoY
-1.8%
11.6%
Net Profit YoY
-35.7%
-253.5%
EPS (diluted)
$0.51

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
CLSK
CLSK
Q4 25
$183.1M
$181.2M
Q3 25
$191.8M
Q2 25
$174.4M
Q1 25
$170.5M
Q4 24
$186.5M
Q3 24
$191.2M
$89.3M
Q2 24
$182.4M
$104.1M
Q1 24
$171.8M
$111.8M
Net Profit
AMPH
AMPH
CLSK
CLSK
Q4 25
$24.4M
$-378.7M
Q3 25
$17.4M
Q2 25
$31.0M
Q1 25
$25.3M
Q4 24
$38.0M
Q3 24
$40.4M
$-62.2M
Q2 24
$37.9M
$-236.2M
Q1 24
$43.2M
$126.7M
Gross Margin
AMPH
AMPH
CLSK
CLSK
Q4 25
46.8%
47.2%
Q3 25
51.4%
Q2 25
49.6%
Q1 25
50.0%
Q4 24
46.5%
Q3 24
53.3%
36.0%
Q2 24
52.2%
56.6%
Q1 24
52.4%
69.3%
Operating Margin
AMPH
AMPH
CLSK
CLSK
Q4 25
19.4%
-174.7%
Q3 25
13.2%
Q2 25
24.2%
Q1 25
21.9%
Q4 24
24.2%
Q3 24
29.8%
-73.5%
Q2 24
30.3%
-239.2%
Q1 24
27.9%
Net Margin
AMPH
AMPH
CLSK
CLSK
Q4 25
13.3%
-209.0%
Q3 25
9.0%
Q2 25
17.8%
Q1 25
14.8%
Q4 24
20.4%
Q3 24
21.1%
-69.6%
Q2 24
20.8%
-226.9%
Q1 24
25.1%
113.4%
EPS (diluted)
AMPH
AMPH
CLSK
CLSK
Q4 25
$0.51
Q3 25
$0.37
Q2 25
$0.64
Q1 25
$0.51
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
CLSK
CLSK
Cash + ST InvestmentsLiquidity on hand
$282.8M
$458.1M
Total DebtLower is stronger
$608.7M
$1.8B
Stockholders' EquityBook value
$788.8M
$1.4B
Total Assets
$1.6B
$3.3B
Debt / EquityLower = less leverage
0.77×
1.29×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
AMPH
AMPH
CLSK
CLSK
Q4 25
$282.8M
$458.1M
Q3 25
$276.2M
Q2 25
$231.8M
Q1 25
$236.9M
Q4 24
$221.6M
Q3 24
$250.5M
$121.2M
Q2 24
$217.8M
$126.1M
Q1 24
$289.6M
Total Debt
AMPH
AMPH
CLSK
CLSK
Q4 25
$608.7M
$1.8B
Q3 25
$608.6M
Q2 25
$607.7M
Q1 25
$603.9M
Q4 24
$601.6M
Q3 24
$596.4M
$7.2M
Q2 24
$586.9M
$1.3M
Q1 24
$594.0M
$5.1M
Stockholders' Equity
AMPH
AMPH
CLSK
CLSK
Q4 25
$788.8M
$1.4B
Q3 25
$776.7M
Q2 25
$757.5M
Q1 25
$751.3M
Q4 24
$732.3M
Q3 24
$727.7M
$1.8B
Q2 24
$713.3M
$1.4B
Q1 24
$672.4M
$1.5B
Total Assets
AMPH
AMPH
CLSK
CLSK
Q4 25
$1.6B
$3.3B
Q3 25
$1.7B
Q2 25
$1.6B
Q1 25
$1.6B
Q4 24
$1.6B
Q3 24
$1.5B
$2.0B
Q2 24
$1.5B
$1.5B
Q1 24
$1.6B
$1.5B
Debt / Equity
AMPH
AMPH
CLSK
CLSK
Q4 25
0.77×
1.29×
Q3 25
0.78×
Q2 25
0.80×
Q1 25
0.80×
Q4 24
0.82×
Q3 24
0.82×
0.00×
Q2 24
0.82×
0.00×
Q1 24
0.88×
0.00×

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
CLSK
CLSK
Operating Cash FlowLast quarter
$32.9M
$-161.1M
Free Cash FlowOCF − Capex
$24.6M
$-198.1M
FCF MarginFCF / Revenue
13.4%
-109.3%
Capex IntensityCapex / Revenue
4.5%
20.4%
Cash ConversionOCF / Net Profit
1.35×
TTM Free Cash FlowTrailing 4 quarters
$121.2M
$-626.9M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
AMPH
AMPH
CLSK
CLSK
Q4 25
$32.9M
$-161.1M
Q3 25
$52.6M
Q2 25
$35.6M
Q1 25
$35.1M
Q4 24
$29.0M
Q3 24
$60.0M
$-233.7M
Q2 24
$69.1M
$-58.4M
Q1 24
$55.3M
$-44.8M
Free Cash Flow
AMPH
AMPH
CLSK
CLSK
Q4 25
$24.6M
$-198.1M
Q3 25
$47.2M
Q2 25
$25.0M
Q1 25
$24.4M
Q4 24
$16.6M
Q3 24
$46.2M
$-299.8M
Q2 24
$63.1M
$-68.7M
Q1 24
$46.5M
$-60.3M
FCF Margin
AMPH
AMPH
CLSK
CLSK
Q4 25
13.4%
-109.3%
Q3 25
24.6%
Q2 25
14.3%
Q1 25
14.3%
Q4 24
8.9%
Q3 24
24.1%
-335.8%
Q2 24
34.6%
-66.0%
Q1 24
27.1%
-54.0%
Capex Intensity
AMPH
AMPH
CLSK
CLSK
Q4 25
4.5%
20.4%
Q3 25
2.8%
Q2 25
6.1%
Q1 25
6.3%
Q4 24
6.7%
Q3 24
7.2%
74.0%
Q2 24
3.3%
9.9%
Q1 24
5.1%
13.8%
Cash Conversion
AMPH
AMPH
CLSK
CLSK
Q4 25
1.35×
Q3 25
3.03×
Q2 25
1.15×
Q1 25
1.39×
Q4 24
0.76×
Q3 24
1.48×
Q2 24
1.82×
Q1 24
1.28×
-0.35×

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%

CLSK
CLSK

Segment breakdown not available.

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