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Side-by-side financial comparison of Protagonist Therapeutics, Inc (PTGX) 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 $170.6M, roughly 1.2× Protagonist Therapeutics, Inc). Protagonist Therapeutics, Inc runs the higher net margin — 77.2% vs -62.0%, a 139.2% gap on every dollar of revenue. On growth, Protagonist Therapeutics, Inc posted the faster year-over-year revenue change (184.4% vs 25.9%). Protagonist Therapeutics, Inc produced more free cash flow last quarter ($182.8M vs $-100.8M).

Protagonist Therapeutics, Inc. is a clinical-stage biopharmaceutical company focused on discovering and developing novel peptide-based targeted therapies for unmet medical needs, primarily covering gastrointestinal disorders, inflammatory diseases and rare disease indications. Its lead product candidates target inflammatory bowel disease and other chronic immune-related conditions, with operations spanning global R&D and partnership collaborations.

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.

PTGX vs RARE — Head-to-Head

Bigger by revenue
RARE
RARE
1.2× larger
RARE
$207.3M
$170.6M
PTGX
Growing faster (revenue YoY)
PTGX
PTGX
+158.5% gap
PTGX
184.4%
25.9%
RARE
Higher net margin
PTGX
PTGX
139.2% more per $
PTGX
77.2%
-62.0%
RARE
More free cash flow
PTGX
PTGX
$283.6M more FCF
PTGX
$182.8M
$-100.8M
RARE

Income Statement — Q4 FY2024 vs Q4 FY2025

Metric
PTGX
PTGX
RARE
RARE
Revenue
$170.6M
$207.3M
Net Profit
$131.7M
$-128.6M
Gross Margin
Operating Margin
74.3%
-54.7%
Net Margin
77.2%
-62.0%
Revenue YoY
184.4%
25.9%
Net Profit YoY
381.7%
3.5%
EPS (diluted)
$2.01
$-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
PTGX
PTGX
RARE
RARE
Q4 25
$207.3M
Q3 25
$159.9M
Q2 25
$166.5M
Q1 25
$139.3M
Q4 24
$170.6M
$164.6M
Q3 24
$139.5M
Q2 24
$147.0M
Q1 24
$255.0M
$108.8M
Net Profit
PTGX
PTGX
RARE
RARE
Q4 25
$-128.6M
Q3 25
$-180.4M
Q2 25
$-115.0M
Q1 25
$-151.1M
Q4 24
$131.7M
$-133.2M
Q3 24
$-133.5M
Q2 24
$-131.6M
Q1 24
$207.3M
$-170.7M
Operating Margin
PTGX
PTGX
RARE
RARE
Q4 25
-54.7%
Q3 25
-106.9%
Q2 25
-64.8%
Q1 25
-102.6%
Q4 24
74.3%
-74.3%
Q3 24
-94.6%
Q2 24
-79.1%
Q1 24
80.9%
-151.9%
Net Margin
PTGX
PTGX
RARE
RARE
Q4 25
-62.0%
Q3 25
-112.8%
Q2 25
-69.0%
Q1 25
-108.5%
Q4 24
77.2%
-80.9%
Q3 24
-95.7%
Q2 24
-89.5%
Q1 24
81.3%
-156.8%
EPS (diluted)
PTGX
PTGX
RARE
RARE
Q4 25
$-1.28
Q3 25
$-1.81
Q2 25
$-1.17
Q1 25
$-1.57
Q4 24
$2.01
$-1.34
Q3 24
$-1.40
Q2 24
$-1.52
Q1 24
$3.26
$-2.03

Balance Sheet & Financial Strength

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

Metric
PTGX
PTGX
RARE
RARE
Cash + ST InvestmentsLiquidity on hand
$418.9M
$421.0M
Total DebtLower is stronger
Stockholders' EquityBook value
$675.3M
$-80.0M
Total Assets
$744.7M
$1.5B
Debt / EquityLower = less leverage

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
PTGX
PTGX
RARE
RARE
Q4 25
$421.0M
Q3 25
$202.5M
Q2 25
$176.3M
Q1 25
$127.1M
Q4 24
$418.9M
$174.0M
Q3 24
$150.6M
Q2 24
$480.7M
Q1 24
$322.6M
$112.3M
Stockholders' Equity
PTGX
PTGX
RARE
RARE
Q4 25
$-80.0M
Q3 25
$9.2M
Q2 25
$151.3M
Q1 25
$144.2M
Q4 24
$675.3M
$255.0M
Q3 24
$346.8M
Q2 24
$432.4M
Q1 24
$560.4M
$140.3M
Total Assets
PTGX
PTGX
RARE
RARE
Q4 25
$1.5B
Q3 25
$1.2B
Q2 25
$1.3B
Q1 25
$1.3B
Q4 24
$744.7M
$1.5B
Q3 24
$1.5B
Q2 24
$1.6B
Q1 24
$629.3M
$1.3B

Cash Flow & Capital Efficiency

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

Metric
PTGX
PTGX
RARE
RARE
Operating Cash FlowLast quarter
$184.2M
$-99.8M
Free Cash FlowOCF − Capex
$182.8M
$-100.8M
FCF MarginFCF / Revenue
107.1%
-48.6%
Capex IntensityCapex / Revenue
0.8%
0.5%
Cash ConversionOCF / Net Profit
1.40×
TTM Free Cash FlowTrailing 4 quarters
$101.7M
$-472.0M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
PTGX
PTGX
RARE
RARE
Q4 25
$-99.8M
Q3 25
$-91.4M
Q2 25
$-108.3M
Q1 25
$-166.5M
Q4 24
$184.2M
$-79.3M
Q3 24
$-67.0M
Q2 24
$-77.0M
Q1 24
$-27.4M
$-190.7M
Free Cash Flow
PTGX
PTGX
RARE
RARE
Q4 25
$-100.8M
Q3 25
$-92.7M
Q2 25
$-110.7M
Q1 25
$-167.8M
Q4 24
$182.8M
$-79.5M
Q3 24
$-68.6M
Q2 24
$-79.0M
Q1 24
$-27.7M
$-193.9M
FCF Margin
PTGX
PTGX
RARE
RARE
Q4 25
-48.6%
Q3 25
-58.0%
Q2 25
-66.5%
Q1 25
-120.5%
Q4 24
107.1%
-48.3%
Q3 24
-49.2%
Q2 24
-53.7%
Q1 24
-10.9%
-178.2%
Capex Intensity
PTGX
PTGX
RARE
RARE
Q4 25
0.5%
Q3 25
0.8%
Q2 25
1.5%
Q1 25
1.0%
Q4 24
0.8%
0.1%
Q3 24
1.2%
Q2 24
1.4%
Q1 24
0.1%
3.0%
Cash Conversion
PTGX
PTGX
RARE
RARE
Q4 25
Q3 25
Q2 25
Q1 25
Q4 24
1.40×
Q3 24
Q2 24
Q1 24
-0.13×

Financial Flow Comparison

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

Revenue Breakdown by Segment

PTGX
PTGX

Segment breakdown not available.

RARE
RARE

Royalty$105.6M51%
Products$101.7M49%

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