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Side-by-side financial comparison of Ultragenyx Pharmaceutical Inc. (RARE) and Ribbon Communications Inc. (RBBN). Click either name above to swap in a different company.

Ultragenyx Pharmaceutical Inc. is the larger business by last-quarter revenue ($207.3M vs $162.6M, roughly 1.3× Ribbon Communications Inc.). Ribbon Communications Inc. runs the higher net margin — 54.8% vs -62.0%, a 116.8% gap on every dollar of revenue. On growth, Ultragenyx Pharmaceutical Inc. posted the faster year-over-year revenue change (25.9% vs -10.3%). Over the past eight quarters, Ultragenyx Pharmaceutical Inc.'s revenue compounded faster (38.0% CAGR vs -8.1%).

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.

Ribbon Communications Inc. is a public company that makes software, IP and optical networking solutions for service providers, enterprises and critical infrastructure sectors. The company was formed in 2017, following the merger of Genband and Sonus Networks and is headquartered in Plano, Texas.

RARE vs RBBN — Head-to-Head

Bigger by revenue
RARE
RARE
1.3× larger
RARE
$207.3M
$162.6M
RBBN
Growing faster (revenue YoY)
RARE
RARE
+36.2% gap
RARE
25.9%
-10.3%
RBBN
Higher net margin
RBBN
RBBN
116.8% more per $
RBBN
54.8%
-62.0%
RARE
Faster 2-yr revenue CAGR
RARE
RARE
Annualised
RARE
38.0%
-8.1%
RBBN

Income Statement — Q4 FY2025 vs Q1 FY2026

Metric
RARE
RARE
RBBN
RBBN
Revenue
$207.3M
$162.6M
Net Profit
$-128.6M
$89.1M
Gross Margin
42.9%
Operating Margin
-54.7%
37.6%
Net Margin
-62.0%
54.8%
Revenue YoY
25.9%
-10.3%
Net Profit YoY
3.5%
EPS (diluted)
$-1.28
$0.50

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
RARE
RARE
RBBN
RBBN
Q1 26
$162.6M
Q4 25
$207.3M
$227.3M
Q3 25
$159.9M
$215.4M
Q2 25
$166.5M
$220.6M
Q1 25
$139.3M
$181.3M
Q4 24
$164.6M
$251.4M
Q3 24
$139.5M
$210.2M
Q2 24
$147.0M
$192.6M
Net Profit
RARE
RARE
RBBN
RBBN
Q1 26
$89.1M
Q4 25
$-128.6M
Q3 25
$-180.4M
$-12.1M
Q2 25
$-115.0M
$-11.1M
Q1 25
$-151.1M
$-26.2M
Q4 24
$-133.2M
Q3 24
$-133.5M
$-13.4M
Q2 24
$-131.6M
$-16.8M
Gross Margin
RARE
RARE
RBBN
RBBN
Q1 26
42.9%
Q4 25
53.3%
Q3 25
50.1%
Q2 25
49.6%
Q1 25
45.4%
Q4 24
55.7%
Q3 24
52.1%
Q2 24
50.8%
Operating Margin
RARE
RARE
RBBN
RBBN
Q1 26
37.6%
Q4 25
-54.7%
4.1%
Q3 25
-106.9%
1.3%
Q2 25
-64.8%
1.9%
Q1 25
-102.6%
-10.8%
Q4 24
-74.3%
13.2%
Q3 24
-94.6%
-0.4%
Q2 24
-79.1%
-1.0%
Net Margin
RARE
RARE
RBBN
RBBN
Q1 26
54.8%
Q4 25
-62.0%
Q3 25
-112.8%
-5.6%
Q2 25
-69.0%
-5.0%
Q1 25
-108.5%
-14.5%
Q4 24
-80.9%
Q3 24
-95.7%
-6.4%
Q2 24
-89.5%
-8.7%
EPS (diluted)
RARE
RARE
RBBN
RBBN
Q1 26
$0.50
Q4 25
$-1.28
$0.50
Q3 25
$-1.81
$-0.07
Q2 25
$-1.17
$-0.06
Q1 25
$-1.57
$-0.15
Q4 24
$-1.34
$0.05
Q3 24
$-1.40
$-0.08
Q2 24
$-1.52
$-0.10

Balance Sheet & Financial Strength

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

Metric
RARE
RARE
RBBN
RBBN
Cash + ST InvestmentsLiquidity on hand
$421.0M
$67.6M
Total DebtLower is stronger
Stockholders' EquityBook value
$-80.0M
$419.1M
Total Assets
$1.5B
Debt / EquityLower = less leverage

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
RARE
RARE
RBBN
RBBN
Q1 26
$67.6M
Q4 25
$421.0M
$96.4M
Q3 25
$202.5M
$74.8M
Q2 25
$176.3M
$60.5M
Q1 25
$127.1M
$71.2M
Q4 24
$174.0M
$87.8M
Q3 24
$150.6M
$37.2M
Q2 24
$480.7M
$64.6M
Total Debt
RARE
RARE
RBBN
RBBN
Q1 26
Q4 25
$342.1M
Q3 25
$344.3M
Q2 25
$346.5M
Q1 25
$347.4M
Q4 24
$348.3M
Q3 24
$349.1M
Q2 24
$350.0M
Stockholders' Equity
RARE
RARE
RBBN
RBBN
Q1 26
$419.1M
Q4 25
$-80.0M
$449.0M
Q3 25
$9.2M
$360.1M
Q2 25
$151.3M
$370.4M
Q1 25
$144.2M
$381.8M
Q4 24
$255.0M
$404.6M
Q3 24
$346.8M
$395.5M
Q2 24
$432.4M
$405.0M
Total Assets
RARE
RARE
RBBN
RBBN
Q1 26
Q4 25
$1.5B
$1.2B
Q3 25
$1.2B
$1.1B
Q2 25
$1.3B
$1.1B
Q1 25
$1.3B
$1.1B
Q4 24
$1.5B
$1.2B
Q3 24
$1.5B
$1.1B
Q2 24
$1.6B
$1.1B
Debt / Equity
RARE
RARE
RBBN
RBBN
Q1 26
Q4 25
0.76×
Q3 25
0.96×
Q2 25
0.94×
Q1 25
0.91×
Q4 24
0.86×
Q3 24
0.88×
Q2 24
0.86×

Cash Flow & Capital Efficiency

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

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

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
RARE
RARE
RBBN
RBBN
Q1 26
Q4 25
$-99.8M
$29.2M
Q3 25
$-91.4M
$26.5M
Q2 25
$-108.3M
$-795.0K
Q1 25
$-166.5M
$-3.5M
Q4 24
$-79.3M
$61.8M
Q3 24
$-67.0M
$-14.8M
Q2 24
$-77.0M
$-9.8M
Free Cash Flow
RARE
RARE
RBBN
RBBN
Q1 26
Q4 25
$-100.8M
$27.3M
Q3 25
$-92.7M
$21.0M
Q2 25
$-110.7M
$-6.5M
Q1 25
$-167.8M
$-15.7M
Q4 24
$-79.5M
$53.8M
Q3 24
$-68.6M
$-23.7M
Q2 24
$-79.0M
$-12.9M
FCF Margin
RARE
RARE
RBBN
RBBN
Q1 26
Q4 25
-48.6%
12.0%
Q3 25
-58.0%
9.7%
Q2 25
-66.5%
-2.9%
Q1 25
-120.5%
-8.7%
Q4 24
-48.3%
21.4%
Q3 24
-49.2%
-11.3%
Q2 24
-53.7%
-6.7%
Capex Intensity
RARE
RARE
RBBN
RBBN
Q1 26
Q4 25
0.5%
0.9%
Q3 25
0.8%
2.6%
Q2 25
1.5%
2.6%
Q1 25
1.0%
6.7%
Q4 24
0.1%
3.2%
Q3 24
1.2%
4.2%
Q2 24
1.4%
1.6%

Financial Flow Comparison

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

Revenue Breakdown by Segment

RARE
RARE

Royalty$105.6M51%
Products$101.7M49%

RBBN
RBBN

Service$94.5M58%
Product$68.1M42%

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