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Side-by-side financial comparison of Clean Energy Fuels Corp. (CLNE) and REPLIGEN CORP (RGEN). Click either name above to swap in a different company.

REPLIGEN CORP is the larger business by last-quarter revenue ($197.9M vs $112.3M, roughly 1.8× Clean Energy Fuels Corp.). REPLIGEN CORP runs the higher net margin — 6.7% vs -38.3%, a 45.0% gap on every dollar of revenue. On growth, REPLIGEN CORP posted the faster year-over-year revenue change (13.6% vs 2.7%). REPLIGEN CORP produced more free cash flow last quarter ($17.6M vs $6.5M). Over the past eight quarters, REPLIGEN CORP's revenue compounded faster (14.4% 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...

Repligen Corporation is a global life sciences company devoted to the development and commercialization of innovative bioprocessing technologies and systems that enable efficiencies in the process of manufacturing biological drugs.2025 The company is based in Waltham, Massachusetts,2014 and was incorporated in Delaware in 1981. A public company, Repligen is listed on the NASDAQ exchange under the symbol RGEN. As of 2025, Repligen employs over 1,900 employees globally and serves primarily biop...

CLNE vs RGEN — Head-to-Head

Bigger by revenue
RGEN
RGEN
1.8× larger
RGEN
$197.9M
$112.3M
CLNE
Growing faster (revenue YoY)
RGEN
RGEN
+10.9% gap
RGEN
13.6%
2.7%
CLNE
Higher net margin
RGEN
RGEN
45.0% more per $
RGEN
6.7%
-38.3%
CLNE
More free cash flow
RGEN
RGEN
$11.1M more FCF
RGEN
$17.6M
$6.5M
CLNE
Faster 2-yr revenue CAGR
RGEN
RGEN
Annualised
RGEN
14.4%
4.1%
CLNE

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
CLNE
CLNE
RGEN
RGEN
Revenue
$112.3M
$197.9M
Net Profit
$-43.0M
$13.3M
Gross Margin
52.5%
Operating Margin
-9.5%
9.0%
Net Margin
-38.3%
6.7%
Revenue YoY
2.7%
13.6%
Net Profit YoY
-42.6%
143.9%
EPS (diluted)
$-0.21
$0.24

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
RGEN
RGEN
Q4 25
$112.3M
$197.9M
Q3 25
$106.1M
$188.8M
Q2 25
$102.6M
$182.4M
Q1 25
$103.8M
$169.2M
Q4 24
$109.3M
$174.1M
Q3 24
$104.9M
$154.9M
Q2 24
$98.0M
$154.1M
Q1 24
$103.7M
$151.3M
Net Profit
CLNE
CLNE
RGEN
RGEN
Q4 25
$-43.0M
$13.3M
Q3 25
$-23.8M
$14.9M
Q2 25
$-20.2M
$14.9M
Q1 25
$-135.0M
$5.8M
Q4 24
$-30.2M
$-30.3M
Q3 24
$-18.2M
$-654.0K
Q2 24
$-16.3M
$3.3M
Q1 24
$-18.4M
$2.1M
Gross Margin
CLNE
CLNE
RGEN
RGEN
Q4 25
52.5%
Q3 25
53.2%
Q2 25
50.0%
Q1 25
53.6%
Q4 24
26.1%
Q3 24
50.0%
Q2 24
49.8%
Q1 24
49.5%
Operating Margin
CLNE
CLNE
RGEN
RGEN
Q4 25
-9.5%
9.0%
Q3 25
-12.8%
8.9%
Q2 25
-9.0%
7.6%
Q1 25
-121.7%
3.9%
Q4 24
-11.8%
-17.7%
Q3 24
-8.1%
-5.1%
Q2 24
-5.7%
1.0%
Q1 24
-9.0%
1.3%
Net Margin
CLNE
CLNE
RGEN
RGEN
Q4 25
-38.3%
6.7%
Q3 25
-22.4%
7.9%
Q2 25
-19.7%
8.2%
Q1 25
-130.1%
3.4%
Q4 24
-27.6%
-17.4%
Q3 24
-17.3%
-0.4%
Q2 24
-16.6%
2.2%
Q1 24
-17.8%
1.4%
EPS (diluted)
CLNE
CLNE
RGEN
RGEN
Q4 25
$-0.21
$0.24
Q3 25
$-0.11
$0.26
Q2 25
$-0.09
$0.26
Q1 25
$-0.60
$0.10
Q4 24
$-0.14
$-0.55
Q3 24
$-0.08
$-0.01
Q2 24
$-0.07
$0.06
Q1 24
$-0.08
$0.04

Balance Sheet & Financial Strength

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

Metric
CLNE
CLNE
RGEN
RGEN
Cash + ST InvestmentsLiquidity on hand
$156.1M
$767.6M
Total DebtLower is stronger
$226.8M
$542.2M
Stockholders' EquityBook value
$559.4M
$2.1B
Total Assets
$1.1B
$2.9B
Debt / EquityLower = less leverage
0.41×
0.26×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
CLNE
CLNE
RGEN
RGEN
Q4 25
$156.1M
$767.6M
Q3 25
$232.2M
$748.7M
Q2 25
$240.8M
$708.9M
Q1 25
$226.6M
$697.2M
Q4 24
$217.5M
$757.4M
Q3 24
$243.5M
$784.0M
Q2 24
$249.3M
$809.1M
Q1 24
$248.9M
$780.6M
Total Debt
CLNE
CLNE
RGEN
RGEN
Q4 25
$226.8M
$542.2M
Q3 25
$284.3M
$537.9M
Q2 25
$277.9M
Q1 25
$271.6M
Q4 24
$265.4M
$525.6M
Q3 24
$264.1M
Q2 24
$263.0M
Q1 24
$262.0M
Stockholders' Equity
CLNE
CLNE
RGEN
RGEN
Q4 25
$559.4M
$2.1B
Q3 25
$585.2M
$2.1B
Q2 25
$590.8M
$2.1B
Q1 25
$596.7M
$2.0B
Q4 24
$713.3M
$2.0B
Q3 24
$724.8M
$2.0B
Q2 24
$723.0M
$2.0B
Q1 24
$722.9M
$2.0B
Total Assets
CLNE
CLNE
RGEN
RGEN
Q4 25
$1.1B
$2.9B
Q3 25
$1.1B
$2.9B
Q2 25
$1.1B
$2.9B
Q1 25
$1.1B
$2.9B
Q4 24
$1.2B
$2.8B
Q3 24
$1.2B
$2.8B
Q2 24
$1.2B
$2.9B
Q1 24
$1.2B
$2.8B
Debt / Equity
CLNE
CLNE
RGEN
RGEN
Q4 25
0.41×
0.26×
Q3 25
0.49×
0.26×
Q2 25
0.47×
Q1 25
0.46×
Q4 24
0.37×
0.27×
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
RGEN
RGEN
Operating Cash FlowLast quarter
$13.1M
$25.7M
Free Cash FlowOCF − Capex
$6.5M
$17.6M
FCF MarginFCF / Revenue
5.8%
8.9%
Capex IntensityCapex / Revenue
5.9%
4.1%
Cash ConversionOCF / Net Profit
1.93×
TTM Free Cash FlowTrailing 4 quarters
$59.9M
$93.9M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
CLNE
CLNE
RGEN
RGEN
Q4 25
$13.1M
$25.7M
Q3 25
$13.1M
$48.1M
Q2 25
$35.9M
$28.6M
Q1 25
$23.4M
$15.0M
Q4 24
$21.9M
$39.2M
Q3 24
$21.4M
$49.3M
Q2 24
$18.8M
$42.2M
Q1 24
$2.6M
$44.7M
Free Cash Flow
CLNE
CLNE
RGEN
RGEN
Q4 25
$6.5M
$17.6M
Q3 25
$6.5M
$43.4M
Q2 25
$30.9M
$21.5M
Q1 25
$15.9M
$11.4M
Q4 24
$10.3M
$33.6M
Q3 24
$42.0K
$42.3M
Q2 24
$4.8M
$37.4M
Q1 24
$-15.6M
$36.4M
FCF Margin
CLNE
CLNE
RGEN
RGEN
Q4 25
5.8%
8.9%
Q3 25
6.1%
23.0%
Q2 25
30.2%
11.8%
Q1 25
15.4%
6.8%
Q4 24
9.5%
19.3%
Q3 24
0.0%
27.3%
Q2 24
4.9%
24.3%
Q1 24
-15.1%
24.0%
Capex Intensity
CLNE
CLNE
RGEN
RGEN
Q4 25
5.9%
4.1%
Q3 25
6.2%
2.5%
Q2 25
4.8%
3.9%
Q1 25
7.2%
2.1%
Q4 24
10.5%
3.2%
Q3 24
20.3%
4.5%
Q2 24
14.2%
3.1%
Q1 24
17.6%
5.5%
Cash Conversion
CLNE
CLNE
RGEN
RGEN
Q4 25
1.93×
Q3 25
3.23×
Q2 25
1.92×
Q1 25
2.57×
Q4 24
Q3 24
Q2 24
12.70×
Q1 24
21.35×

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%

RGEN
RGEN

Segment breakdown not available.

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