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Side-by-side financial comparison of Clean Energy Fuels Corp. (CLNE) and Ultragenyx Pharmaceutical Inc. (RARE). Click either name above to swap in a different company.

Ultragenyx Pharmaceutical Inc. is the larger business by last-quarter revenue ($207.3M vs $112.3M, roughly 1.8× Clean Energy Fuels Corp.). Clean Energy Fuels Corp. runs the higher net margin — -38.3% vs -62.0%, a 23.7% gap on every dollar of revenue. On growth, Ultragenyx Pharmaceutical Inc. posted the faster year-over-year revenue change (25.9% vs 2.7%). Clean Energy Fuels Corp. produced more free cash flow last quarter ($6.5M vs $-100.8M). Over the past eight quarters, Ultragenyx Pharmaceutical Inc.'s revenue compounded faster (38.0% CAGR vs 4.1%).

Bloom Energy is an American public company that designs and manufactures solid oxide fuel cells (SOFCs) which independently produce electricity onsite for power generation in data centers, manufacturing, and other commercial sectors. Founded in 2001 and headquartered in San Jose, California; its fuel cell technology generates electricity through a chemical conversion process, which differs from most other power sources reliant on combustion, and can use natural gas, biogas or hydrogen as fuel...

Ultragenyx Pharmaceutical Inc. is an American biopharmaceutical company involved in the research and development of novel products for treatment of rare and ultra-rare genetic diseases for which there are typically no approved treatments and high unmet medical need. The company works with multiple drug modalities including biologics, small molecule, gene therapies, and ASO and mRNAs in the disease categories of bone, endocrine, metabolic, muscle and CNS diseases.

CLNE vs RARE — Head-to-Head

Bigger by revenue
RARE
RARE
1.8× larger
RARE
$207.3M
$112.3M
CLNE
Growing faster (revenue YoY)
RARE
RARE
+23.2% gap
RARE
25.9%
2.7%
CLNE
Higher net margin
CLNE
CLNE
23.7% more per $
CLNE
-38.3%
-62.0%
RARE
More free cash flow
CLNE
CLNE
$107.3M more FCF
CLNE
$6.5M
$-100.8M
RARE
Faster 2-yr revenue CAGR
RARE
RARE
Annualised
RARE
38.0%
4.1%
CLNE

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
CLNE
CLNE
RARE
RARE
Revenue
$112.3M
$207.3M
Net Profit
$-43.0M
$-128.6M
Gross Margin
Operating Margin
-9.5%
-54.7%
Net Margin
-38.3%
-62.0%
Revenue YoY
2.7%
25.9%
Net Profit YoY
-42.6%
3.5%
EPS (diluted)
$-0.21
$-1.28

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
CLNE
CLNE
RARE
RARE
Q4 25
$112.3M
$207.3M
Q3 25
$106.1M
$159.9M
Q2 25
$102.6M
$166.5M
Q1 25
$103.8M
$139.3M
Q4 24
$109.3M
$164.6M
Q3 24
$104.9M
$139.5M
Q2 24
$98.0M
$147.0M
Q1 24
$103.7M
$108.8M
Net Profit
CLNE
CLNE
RARE
RARE
Q4 25
$-43.0M
$-128.6M
Q3 25
$-23.8M
$-180.4M
Q2 25
$-20.2M
$-115.0M
Q1 25
$-135.0M
$-151.1M
Q4 24
$-30.2M
$-133.2M
Q3 24
$-18.2M
$-133.5M
Q2 24
$-16.3M
$-131.6M
Q1 24
$-18.4M
$-170.7M
Operating Margin
CLNE
CLNE
RARE
RARE
Q4 25
-9.5%
-54.7%
Q3 25
-12.8%
-106.9%
Q2 25
-9.0%
-64.8%
Q1 25
-121.7%
-102.6%
Q4 24
-11.8%
-74.3%
Q3 24
-8.1%
-94.6%
Q2 24
-5.7%
-79.1%
Q1 24
-9.0%
-151.9%
Net Margin
CLNE
CLNE
RARE
RARE
Q4 25
-38.3%
-62.0%
Q3 25
-22.4%
-112.8%
Q2 25
-19.7%
-69.0%
Q1 25
-130.1%
-108.5%
Q4 24
-27.6%
-80.9%
Q3 24
-17.3%
-95.7%
Q2 24
-16.6%
-89.5%
Q1 24
-17.8%
-156.8%
EPS (diluted)
CLNE
CLNE
RARE
RARE
Q4 25
$-0.21
$-1.28
Q3 25
$-0.11
$-1.81
Q2 25
$-0.09
$-1.17
Q1 25
$-0.60
$-1.57
Q4 24
$-0.14
$-1.34
Q3 24
$-0.08
$-1.40
Q2 24
$-0.07
$-1.52
Q1 24
$-0.08
$-2.03

Balance Sheet & Financial Strength

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

Metric
CLNE
CLNE
RARE
RARE
Cash + ST InvestmentsLiquidity on hand
$156.1M
$421.0M
Total DebtLower is stronger
$226.8M
Stockholders' EquityBook value
$559.4M
$-80.0M
Total Assets
$1.1B
$1.5B
Debt / EquityLower = less leverage
0.41×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
CLNE
CLNE
RARE
RARE
Q4 25
$156.1M
$421.0M
Q3 25
$232.2M
$202.5M
Q2 25
$240.8M
$176.3M
Q1 25
$226.6M
$127.1M
Q4 24
$217.5M
$174.0M
Q3 24
$243.5M
$150.6M
Q2 24
$249.3M
$480.7M
Q1 24
$248.9M
$112.3M
Total Debt
CLNE
CLNE
RARE
RARE
Q4 25
$226.8M
Q3 25
$284.3M
Q2 25
$277.9M
Q1 25
$271.6M
Q4 24
$265.4M
Q3 24
$264.1M
Q2 24
$263.0M
Q1 24
$262.0M
Stockholders' Equity
CLNE
CLNE
RARE
RARE
Q4 25
$559.4M
$-80.0M
Q3 25
$585.2M
$9.2M
Q2 25
$590.8M
$151.3M
Q1 25
$596.7M
$144.2M
Q4 24
$713.3M
$255.0M
Q3 24
$724.8M
$346.8M
Q2 24
$723.0M
$432.4M
Q1 24
$722.9M
$140.3M
Total Assets
CLNE
CLNE
RARE
RARE
Q4 25
$1.1B
$1.5B
Q3 25
$1.1B
$1.2B
Q2 25
$1.1B
$1.3B
Q1 25
$1.1B
$1.3B
Q4 24
$1.2B
$1.5B
Q3 24
$1.2B
$1.5B
Q2 24
$1.2B
$1.6B
Q1 24
$1.2B
$1.3B
Debt / Equity
CLNE
CLNE
RARE
RARE
Q4 25
0.41×
Q3 25
0.49×
Q2 25
0.47×
Q1 25
0.46×
Q4 24
0.37×
Q3 24
0.36×
Q2 24
0.36×
Q1 24
0.36×

Cash Flow & Capital Efficiency

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

Metric
CLNE
CLNE
RARE
RARE
Operating Cash FlowLast quarter
$13.1M
$-99.8M
Free Cash FlowOCF − Capex
$6.5M
$-100.8M
FCF MarginFCF / Revenue
5.8%
-48.6%
Capex IntensityCapex / Revenue
5.9%
0.5%
Cash ConversionOCF / Net Profit
TTM Free Cash FlowTrailing 4 quarters
$59.9M
$-472.0M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
CLNE
CLNE
RARE
RARE
Q4 25
$13.1M
$-99.8M
Q3 25
$13.1M
$-91.4M
Q2 25
$35.9M
$-108.3M
Q1 25
$23.4M
$-166.5M
Q4 24
$21.9M
$-79.3M
Q3 24
$21.4M
$-67.0M
Q2 24
$18.8M
$-77.0M
Q1 24
$2.6M
$-190.7M
Free Cash Flow
CLNE
CLNE
RARE
RARE
Q4 25
$6.5M
$-100.8M
Q3 25
$6.5M
$-92.7M
Q2 25
$30.9M
$-110.7M
Q1 25
$15.9M
$-167.8M
Q4 24
$10.3M
$-79.5M
Q3 24
$42.0K
$-68.6M
Q2 24
$4.8M
$-79.0M
Q1 24
$-15.6M
$-193.9M
FCF Margin
CLNE
CLNE
RARE
RARE
Q4 25
5.8%
-48.6%
Q3 25
6.1%
-58.0%
Q2 25
30.2%
-66.5%
Q1 25
15.4%
-120.5%
Q4 24
9.5%
-48.3%
Q3 24
0.0%
-49.2%
Q2 24
4.9%
-53.7%
Q1 24
-15.1%
-178.2%
Capex Intensity
CLNE
CLNE
RARE
RARE
Q4 25
5.9%
0.5%
Q3 25
6.2%
0.8%
Q2 25
4.8%
1.5%
Q1 25
7.2%
1.0%
Q4 24
10.5%
0.1%
Q3 24
20.3%
1.2%
Q2 24
14.2%
1.4%
Q1 24
17.6%
3.0%

Financial Flow Comparison

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

Revenue Breakdown by Segment

CLNE
CLNE

Volume Related Fuel Sales$73.6M66%
Services$15.1M13%
Station Construction Sales$10.7M9%
Volume Related Renewable Identification Number Credits$9.5M8%
Volume Related Low Carbon Fuel Standard Credits$3.4M3%

RARE
RARE

Royalty$105.6M51%
Products$101.7M49%

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