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Side-by-side financial comparison of Certara, Inc. (CERT) and Zai Lab Ltd (ZLAB). Click either name above to swap in a different company.

Zai Lab Ltd is the larger business by last-quarter revenue ($127.1M vs $103.6M, roughly 1.2× Certara, Inc.). On growth, Zai Lab Ltd posted the faster year-over-year revenue change (17.1% vs 3.3%). Certara, Inc. produced more free cash flow last quarter ($27.8M vs $-26.7M). Over the past eight quarters, Zai Lab Ltd's revenue compounded faster (20.8% CAGR vs 3.6%).

Certara is a global leader in biopharmaceutical software and consulting services, specializing in modeling, simulation, and regulatory science solutions. It serves pharmaceutical companies, biotech firms and healthcare stakeholders across all drug development stages, helping accelerate new therapy launches, lower R&D risks and cut overall development costs.

Zai Lab Ltd is a global biopharmaceutical company focused on developing, manufacturing and commercializing innovative therapies for oncology, autoimmune disorders, infectious diseases and other unmet medical needs. It operates primarily in the Greater China region and partners with leading global biotech firms to expand access to life-saving treatments for underserved patient populations.

CERT vs ZLAB — Head-to-Head

Bigger by revenue
ZLAB
ZLAB
1.2× larger
ZLAB
$127.1M
$103.6M
CERT
Growing faster (revenue YoY)
ZLAB
ZLAB
+13.8% gap
ZLAB
17.1%
3.3%
CERT
More free cash flow
CERT
CERT
$54.5M more FCF
CERT
$27.8M
$-26.7M
ZLAB
Faster 2-yr revenue CAGR
ZLAB
ZLAB
Annualised
ZLAB
20.8%
3.6%
CERT

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
CERT
CERT
ZLAB
ZLAB
Revenue
$103.6M
$127.1M
Net Profit
$-5.9M
Gross Margin
51.0%
Operating Margin
0.8%
-54.6%
Net Margin
-5.7%
Revenue YoY
3.3%
17.1%
Net Profit YoY
-189.6%
EPS (diluted)
$-0.04
$-0.05

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
CERT
CERT
ZLAB
ZLAB
Q4 25
$103.6M
$127.1M
Q3 25
$104.6M
$115.4M
Q2 25
$104.6M
$109.1M
Q1 25
$106.0M
$105.7M
Q4 24
$100.4M
$108.5M
Q3 24
$94.8M
$101.8M
Q2 24
$93.3M
$100.1M
Q1 24
$96.7M
$87.1M
Net Profit
CERT
CERT
ZLAB
ZLAB
Q4 25
$-5.9M
Q3 25
$1.5M
$-36.0M
Q2 25
$-2.0M
$-40.7M
Q1 25
$4.7M
$-48.4M
Q4 24
$6.6M
Q3 24
$-1.4M
$-41.7M
Q2 24
$-12.6M
$-80.3M
Q1 24
$-4.7M
$-53.5M
Gross Margin
CERT
CERT
ZLAB
ZLAB
Q4 25
51.0%
Q3 25
59.5%
Q2 25
60.6%
Q1 25
63.6%
Q4 24
61.5%
Q3 24
64.1%
Q2 24
64.9%
Q1 24
61.4%
Operating Margin
CERT
CERT
ZLAB
ZLAB
Q4 25
0.8%
-54.6%
Q3 25
2.9%
-42.3%
Q2 25
9.1%
-50.3%
Q1 25
7.2%
-53.3%
Q4 24
6.0%
-62.6%
Q3 24
2.7%
-66.6%
Q2 24
-9.7%
-76.0%
Q1 24
-1.3%
-80.7%
Net Margin
CERT
CERT
ZLAB
ZLAB
Q4 25
-5.7%
Q3 25
1.5%
-31.2%
Q2 25
-1.9%
-37.3%
Q1 25
4.5%
-45.8%
Q4 24
6.6%
Q3 24
-1.4%
-40.9%
Q2 24
-13.5%
-80.2%
Q1 24
-4.8%
-61.4%
EPS (diluted)
CERT
CERT
ZLAB
ZLAB
Q4 25
$-0.04
$-0.05
Q3 25
$0.01
$-0.03
Q2 25
$-0.01
$-0.04
Q1 25
$0.03
$-0.04
Q4 24
$0.04
$-0.09
Q3 24
$-0.01
$-0.04
Q2 24
$-0.08
$-0.08
Q1 24
$-0.03
$-0.05

Balance Sheet & Financial Strength

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

Metric
CERT
CERT
ZLAB
ZLAB
Cash + ST InvestmentsLiquidity on hand
$189.4M
$689.6M
Total DebtLower is stronger
$293.1M
Stockholders' EquityBook value
$1.1B
$715.5M
Total Assets
$1.6B
$1.2B
Debt / EquityLower = less leverage
0.28×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
CERT
CERT
ZLAB
ZLAB
Q4 25
$189.4M
$689.6M
Q3 25
$172.7M
$717.2M
Q2 25
$162.3M
$732.2M
Q1 25
$179.1M
$757.3M
Q4 24
$179.2M
$779.7M
Q3 24
$233.0M
$616.1M
Q2 24
$224.6M
$630.0M
Q1 24
$224.8M
$650.8M
Total Debt
CERT
CERT
ZLAB
ZLAB
Q4 25
$293.1M
Q3 25
$293.5M
Q2 25
$294.2M
Q1 25
$294.8M
Q4 24
$295.4M
Q3 24
$296.1M
Q2 24
$296.7M
Q1 24
$290.8M
Stockholders' Equity
CERT
CERT
ZLAB
ZLAB
Q4 25
$1.1B
$715.5M
Q3 25
$1.1B
$759.9M
Q2 25
$1.1B
$791.7M
Q1 25
$1.1B
$810.8M
Q4 24
$1.1B
$840.9M
Q3 24
$1.1B
$667.7M
Q2 24
$1.0B
$704.2M
Q1 24
$1.1B
$762.2M
Total Assets
CERT
CERT
ZLAB
ZLAB
Q4 25
$1.6B
$1.2B
Q3 25
$1.5B
$1.2B
Q2 25
$1.5B
$1.2B
Q1 25
$1.6B
$1.2B
Q4 24
$1.6B
$1.2B
Q3 24
$1.5B
$985.3M
Q2 24
$1.5B
$987.4M
Q1 24
$1.5B
$988.4M
Debt / Equity
CERT
CERT
ZLAB
ZLAB
Q4 25
0.28×
Q3 25
0.28×
Q2 25
0.27×
Q1 25
0.27×
Q4 24
0.28×
Q3 24
0.28×
Q2 24
0.28×
Q1 24
0.28×

Cash Flow & Capital Efficiency

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

Metric
CERT
CERT
ZLAB
ZLAB
Operating Cash FlowLast quarter
$28.8M
$-26.0M
Free Cash FlowOCF − Capex
$27.8M
$-26.7M
FCF MarginFCF / Revenue
26.8%
-21.0%
Capex IntensityCapex / Revenue
1.0%
0.5%
Cash ConversionOCF / Net Profit
TTM Free Cash FlowTrailing 4 quarters
$94.4M
$-158.9M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
CERT
CERT
ZLAB
ZLAB
Q4 25
$28.8M
$-26.0M
Q3 25
$32.3M
$-32.0M
Q2 25
$17.8M
$-31.0M
Q1 25
$17.4M
$-61.7M
Q4 24
$49.4M
$-55.8M
Q3 24
$17.0M
$-26.8M
Q2 24
$9.8M
$-42.2M
Q1 24
$4.3M
$-90.1M
Free Cash Flow
CERT
CERT
ZLAB
ZLAB
Q4 25
$27.8M
$-26.7M
Q3 25
$32.1M
$-35.0M
Q2 25
$17.8M
$-33.9M
Q1 25
$16.8M
$-63.2M
Q4 24
$49.0M
$-58.4M
Q3 24
$16.8M
$-28.2M
Q2 24
$9.4M
$-42.9M
Q1 24
$3.7M
$-91.1M
FCF Margin
CERT
CERT
ZLAB
ZLAB
Q4 25
26.8%
-21.0%
Q3 25
30.7%
-30.4%
Q2 25
17.0%
-31.1%
Q1 25
15.8%
-59.9%
Q4 24
48.8%
-53.8%
Q3 24
17.7%
-27.7%
Q2 24
10.1%
-42.9%
Q1 24
3.8%
-104.5%
Capex Intensity
CERT
CERT
ZLAB
ZLAB
Q4 25
1.0%
0.5%
Q3 25
0.2%
2.6%
Q2 25
0.1%
2.6%
Q1 25
0.6%
1.5%
Q4 24
0.4%
2.4%
Q3 24
0.2%
1.3%
Q2 24
0.5%
0.7%
Q1 24
0.6%
1.1%
Cash Conversion
CERT
CERT
ZLAB
ZLAB
Q4 25
Q3 25
21.19×
Q2 25
Q1 25
3.66×
Q4 24
7.51×
Q3 24
Q2 24
Q1 24

Financial Flow Comparison

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

Revenue Breakdown by Segment

CERT
CERT

Segment breakdown not available.

ZLAB
ZLAB

Zejula$56.0M44%
Other$21.9M17%
Nuzyra$16.0M13%
Optune$11.9M9%
XACDURO$10.7M8%
Qinlock$9.7M8%
AUGTYRO$836.0K1%

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