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Side-by-side financial comparison of Korro Bio, Inc. (KRRO) and ReTo Eco-Solutions, Inc. (RETO). Click either name above to swap in a different company.

Korro Bio, Inc. is the larger business by last-quarter revenue ($1.3M vs $1.0M, roughly 1.2× ReTo Eco-Solutions, Inc.). On growth, ReTo Eco-Solutions, Inc. posted the faster year-over-year revenue change (36.6% vs -43.1%). ReTo Eco-Solutions, Inc. produced more free cash flow last quarter ($-1.7M vs $-79.1M).

Korro Bio, Inc. is a clinical-stage biotechnology company focused on developing innovative RNA editing therapies for rare and severe genetic diseases. It leverages its proprietary oligonucleotide platform to target disease-causing mutations, with core pipelines covering ophthalmology, respiratory and neuromuscular disorder segments, striving to address unmet medical needs for global patients.

ReTo Eco-Solutions, Inc. develops and supplies eco-friendly construction materials, environmental remediation services, and solid waste treatment solutions. Its core offerings include recycled construction aggregates, soil improvement products, and ecological restoration systems, primarily serving infrastructure, real estate, and environmental conservation sectors across the Chinese market.

KRRO vs RETO — Head-to-Head

Bigger by revenue
KRRO
KRRO
1.2× larger
KRRO
$1.3M
$1.0M
RETO
Growing faster (revenue YoY)
RETO
RETO
+79.7% gap
RETO
36.6%
-43.1%
KRRO
More free cash flow
RETO
RETO
$77.4M more FCF
RETO
$-1.7M
$-79.1M
KRRO

Income Statement — Q4 FY2025 vs Q2 FY2025

Metric
KRRO
KRRO
RETO
RETO
Revenue
$1.3M
$1.0M
Net Profit
$-1.4M
Gross Margin
17.7%
Operating Margin
-133.0%
Net Margin
-131.6%
Revenue YoY
-43.1%
36.6%
Net Profit YoY
-136.1%
-103.5%
EPS (diluted)

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
KRRO
KRRO
RETO
RETO
Q4 25
$1.3M
Q3 25
$1.1M
Q2 25
$1.5M
$1.0M
Q1 25
$2.5M
Q3 24
$0
Q2 24
$0
$768.4K
Q1 24
$0
Q2 22
$2.9M
Net Profit
KRRO
KRRO
RETO
RETO
Q4 25
Q3 25
$-18.1M
Q2 25
$-25.8M
$-1.4M
Q1 25
$-23.4M
Q3 24
$-21.0M
Q2 24
$-21.8M
$-678.5K
Q1 24
$-19.6M
Q2 22
$-5.7M
Gross Margin
KRRO
KRRO
RETO
RETO
Q4 25
Q3 25
Q2 25
17.7%
Q1 25
Q3 24
Q2 24
43.3%
Q1 24
Q2 22
13.0%
Operating Margin
KRRO
KRRO
RETO
RETO
Q4 25
Q3 25
-1764.9%
Q2 25
-1863.2%
-133.0%
Q1 25
-981.2%
Q3 24
Q2 24
-68.0%
Q1 24
Q2 22
-195.8%
Net Margin
KRRO
KRRO
RETO
RETO
Q4 25
Q3 25
-1657.0%
Q2 25
-1765.1%
-131.6%
Q1 25
-917.1%
Q3 24
Q2 24
-88.3%
Q1 24
Q2 22
-196.4%
EPS (diluted)
KRRO
KRRO
RETO
RETO
Q4 25
Q3 25
$-1.92
Q2 25
$-2.74
Q1 25
$-2.49
Q3 24
$-2.26
Q2 24
$-2.43
$-0.25
Q1 24
$-2.44
Q2 22
$-0.16

Balance Sheet & Financial Strength

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

Metric
KRRO
KRRO
RETO
RETO
Cash + ST InvestmentsLiquidity on hand
$75.2M
$2.5M
Total DebtLower is stronger
Stockholders' EquityBook value
$51.4M
$30.4M
Total Assets
$113.5M
$41.4M
Debt / EquityLower = less leverage

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
KRRO
KRRO
RETO
RETO
Q4 25
$75.2M
Q3 25
$92.5M
Q2 25
$96.4M
$2.5M
Q1 25
$115.0M
Q3 24
$137.0M
Q2 24
$157.4M
$1.6M
Q1 24
$138.8M
Q2 22
$832.4K
Stockholders' Equity
KRRO
KRRO
RETO
RETO
Q4 25
$51.4M
Q3 25
$99.0M
Q2 25
$115.1M
$30.4M
Q1 25
$139.0M
Q3 24
$179.6M
Q2 24
$198.1M
$13.3M
Q1 24
$151.4M
Q2 22
$13.5M
Total Assets
KRRO
KRRO
RETO
RETO
Q4 25
$113.5M
Q3 25
$161.6M
Q2 25
$180.4M
$41.4M
Q1 25
$202.2M
Q3 24
$243.5M
Q2 24
$249.6M
$33.7M
Q1 24
$198.0M
Q2 22
$33.9M

Cash Flow & Capital Efficiency

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

Metric
KRRO
KRRO
RETO
RETO
Operating Cash FlowLast quarter
$-78.6M
$-1.6M
Free Cash FlowOCF − Capex
$-79.1M
$-1.7M
FCF MarginFCF / Revenue
-6120.7%
-157.4%
Capex IntensityCapex / Revenue
40.1%
5.1%
Cash ConversionOCF / Net Profit
TTM Free Cash FlowTrailing 4 quarters
$-140.4M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
KRRO
KRRO
RETO
RETO
Q4 25
$-78.6M
Q3 25
$-17.2M
Q2 25
$-19.2M
$-1.6M
Q1 25
$-24.5M
Q3 24
$-16.1M
Q2 24
$-14.6M
$-4.8M
Q1 24
$-21.9M
Q2 22
$-9.3M
Free Cash Flow
KRRO
KRRO
RETO
RETO
Q4 25
$-79.1M
Q3 25
$-17.4M
Q2 25
$-19.4M
$-1.7M
Q1 25
$-24.6M
Q3 24
$-21.0M
Q2 24
$-20.6M
Q1 24
$-27.5M
Q2 22
FCF Margin
KRRO
KRRO
RETO
RETO
Q4 25
-6120.7%
Q3 25
-1592.1%
Q2 25
-1326.6%
-157.4%
Q1 25
-963.6%
Q3 24
Q2 24
Q1 24
Q2 22
Capex Intensity
KRRO
KRRO
RETO
RETO
Q4 25
40.1%
Q3 25
16.1%
Q2 25
9.6%
5.1%
Q1 25
4.7%
Q3 24
Q2 24
Q1 24
Q2 22

Financial Flow Comparison

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

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