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Side-by-side financial comparison of MIRA PHARMACEUTICALS, INC. (MIRA) and PROTHENA CORP PUBLIC LTD CO (PRTA). Click either name above to swap in a different company.

PROTHENA CORP PUBLIC LTD CO is the larger business by last-quarter revenue ($21.0K vs $15.7K, roughly 1.3× MIRA PHARMACEUTICALS, INC.). On growth, MIRA PHARMACEUTICALS, INC. posted the faster year-over-year revenue change (-58.4% vs -99.0%).

MIRA Pharmaceuticals, Inc. is a clinical-stage biopharmaceutical firm focused on researching, developing, and commercializing novel prescription therapies for rare diseases and unmet medical needs. It primarily serves global patient populations, prioritizing therapeutic areas with limited existing treatment options to improve patient outcomes.

Prothena Corporation plc is a late-stage clinical biotechnology firm focused on developing and commercializing innovative antibody therapies for neurodegenerative disorders, rare diseases and immune-related conditions. Its core pipeline targets unmet medical needs including amyloidosis, Parkinson's and Alzheimer's, serving key markets across North America, Europe and the Asia-Pacific.

MIRA vs PRTA — Head-to-Head

Bigger by revenue
PRTA
PRTA
1.3× larger
PRTA
$21.0K
$15.7K
MIRA
Growing faster (revenue YoY)
MIRA
MIRA
+40.6% gap
MIRA
-58.4%
-99.0%
PRTA

Income Statement — Q3 FY2025 vs Q4 FY2025

Metric
MIRA
MIRA
PRTA
PRTA
Revenue
$15.7K
$21.0K
Net Profit
$-1.1M
Gross Margin
Operating Margin
Net Margin
-7247.7%
Revenue YoY
-58.4%
-99.0%
Net Profit YoY
44.3%
62.7%
EPS (diluted)
$-1.18

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
MIRA
MIRA
PRTA
PRTA
Q4 25
$21.0K
Q3 25
$15.7K
$2.4M
Q2 25
$4.4M
Q1 25
$2.8M
Q4 24
$2.1M
Q3 24
$37.8K
$970.0K
Q2 24
$132.0M
Q1 24
$50.0K
Net Profit
MIRA
MIRA
PRTA
PRTA
Q4 25
Q3 25
$-1.1M
$-36.5M
Q2 25
$-125.8M
Q1 25
$-60.2M
Q4 24
Q3 24
$-2.0M
$-59.0M
Q2 24
$66.9M
Q1 24
$-72.2M
Operating Margin
MIRA
MIRA
PRTA
PRTA
Q4 25
Q3 25
-1666.3%
Q2 25
-1914.4%
Q1 25
-2319.0%
Q4 24
Q3 24
-6857.0%
Q2 24
44.2%
Q1 24
-163056.0%
Net Margin
MIRA
MIRA
PRTA
PRTA
Q4 25
Q3 25
-7247.7%
-1513.1%
Q2 25
-2845.4%
Q1 25
-2128.5%
Q4 24
Q3 24
-5413.9%
-6082.6%
Q2 24
50.7%
Q1 24
-144478.0%
EPS (diluted)
MIRA
MIRA
PRTA
PRTA
Q4 25
Q3 25
$-1.18
$-0.68
Q2 25
$-2.34
Q1 25
$-1.12
Q4 24
Q3 24
$-0.14
$-1.10
Q2 24
$1.22
Q1 24
$-1.34

Balance Sheet & Financial Strength

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

Metric
MIRA
MIRA
PRTA
PRTA
Cash + ST InvestmentsLiquidity on hand
$7.5M
$307.5M
Total DebtLower is stronger
Stockholders' EquityBook value
$7.5M
$280.5M
Total Assets
$7.6M
$326.8M
Debt / EquityLower = less leverage

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
MIRA
MIRA
PRTA
PRTA
Q4 25
$307.5M
Q3 25
$7.5M
$330.8M
Q2 25
$371.4M
Q1 25
$417.9M
Q4 24
$471.4M
Q3 24
$519.3M
Q2 24
$564.1M
Q1 24
$546.5M
Stockholders' Equity
MIRA
MIRA
PRTA
PRTA
Q4 25
$280.5M
Q3 25
$7.5M
$295.0M
Q2 25
$324.3M
Q1 25
$437.7M
Q4 24
$486.9M
Q3 24
$3.6M
$534.4M
Q2 24
$581.9M
Q1 24
$502.4M
Total Assets
MIRA
MIRA
PRTA
PRTA
Q4 25
$326.8M
Q3 25
$7.6M
$352.6M
Q2 25
$399.1M
Q1 25
$495.3M
Q4 24
$547.1M
Q3 24
$4.3M
$595.3M
Q2 24
$645.6M
Q1 24
$623.2M

Cash Flow & Capital Efficiency

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

Metric
MIRA
MIRA
PRTA
PRTA
Operating Cash FlowLast quarter
$-1.1M
$-163.6M
Free Cash FlowOCF − Capex
FCF MarginFCF / Revenue
Capex IntensityCapex / Revenue
Cash ConversionOCF / Net Profit
TTM Free Cash FlowTrailing 4 quarters

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
MIRA
MIRA
PRTA
PRTA
Q4 25
$-163.6M
Q3 25
$-1.1M
$-40.6M
Q2 25
$-46.3M
Q1 25
$-53.4M
Q4 24
$-150.1M
Q3 24
$-1.8M
$-45.2M
Q2 24
$16.0M
Q1 24
$-73.1M
Cash Conversion
MIRA
MIRA
PRTA
PRTA
Q4 25
Q3 25
Q2 25
Q1 25
Q4 24
Q3 24
Q2 24
0.24×
Q1 24

Financial Flow Comparison

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

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