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Side-by-side financial comparison of FRANKLIN STREET PROPERTIES CORP (FSP) and Pulmonx Corp (LUNG). Click either name above to swap in a different company.

FRANKLIN STREET PROPERTIES CORP is the larger business by last-quarter revenue ($26.0M vs $20.6M, roughly 1.3× Pulmonx Corp). FRANKLIN STREET PROPERTIES CORP runs the higher net margin — -28.1% vs -66.3%, a 38.2% gap on every dollar of revenue. On growth, FRANKLIN STREET PROPERTIES CORP posted the faster year-over-year revenue change (-8.2% vs -8.7%). Over the past eight quarters, Pulmonx Corp's revenue compounded faster (-0.5% CAGR vs -8.7%).

Franklin Street Properties Corp is a Massachusetts-based real estate investment trust (REIT) in the United States. It primarily invests in, owns, and operates high-quality office properties across major U.S. metropolitan markets, serving corporate tenants across various industry segments, and delivers stable long-term returns via rental income and strategic asset management.

Pulmonx Corp is a global medical tech firm focused on interventional pulmonology solutions. It develops minimally invasive endobronchial valves to treat severe COPD and emphysema, with products sold across North America, Europe, and Asia-Pacific for patients with advanced lung conditions.

FSP vs LUNG — Head-to-Head

Bigger by revenue
FSP
FSP
1.3× larger
FSP
$26.0M
$20.6M
LUNG
Growing faster (revenue YoY)
FSP
FSP
+0.4% gap
FSP
-8.2%
-8.7%
LUNG
Higher net margin
FSP
FSP
38.2% more per $
FSP
-28.1%
-66.3%
LUNG
Faster 2-yr revenue CAGR
LUNG
LUNG
Annualised
LUNG
-0.5%
-8.7%
FSP

Income Statement — Q4 FY2025 vs Q1 FY2026

Metric
FSP
FSP
LUNG
LUNG
Revenue
$26.0M
$20.6M
Net Profit
$-7.3M
$-13.7M
Gross Margin
59.4%
77.9%
Operating Margin
-27.9%
-40.9%
Net Margin
-28.1%
-66.3%
Revenue YoY
-8.2%
-8.7%
Net Profit YoY
14.1%
5.5%
EPS (diluted)
$-0.06
$-0.33

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
FSP
FSP
LUNG
LUNG
Q1 26
$20.6M
Q4 25
$26.0M
$22.6M
Q3 25
$27.3M
$21.5M
Q2 25
$26.7M
$23.9M
Q1 25
$27.1M
$22.5M
Q4 24
$28.4M
$23.8M
Q3 24
$29.7M
$20.4M
Q2 24
$30.8M
$20.8M
Net Profit
FSP
FSP
LUNG
LUNG
Q1 26
$-13.7M
Q4 25
$-7.3M
$-10.4M
Q3 25
$-8.3M
$-14.0M
Q2 25
$-7.9M
$-15.2M
Q1 25
$-21.4M
$-14.4M
Q4 24
$-8.5M
$-13.2M
Q3 24
$-15.6M
$-14.1M
Q2 24
$-21.0M
$-15.3M
Gross Margin
FSP
FSP
LUNG
LUNG
Q1 26
77.9%
Q4 25
59.4%
77.6%
Q3 25
60.9%
74.7%
Q2 25
59.9%
72.1%
Q1 25
62.8%
72.5%
Q4 24
59.7%
74.0%
Q3 24
61.0%
73.7%
Q2 24
64.2%
73.7%
Operating Margin
FSP
FSP
LUNG
LUNG
Q1 26
-40.9%
Q4 25
-27.9%
-43.8%
Q3 25
-30.5%
-66.9%
Q2 25
-29.2%
-62.0%
Q1 25
-78.9%
-64.6%
Q4 24
-29.9%
-56.5%
Q3 24
-52.4%
-69.3%
Q2 24
-68.0%
-75.2%
Net Margin
FSP
FSP
LUNG
LUNG
Q1 26
-66.3%
Q4 25
-28.1%
-46.1%
Q3 25
-30.5%
-64.9%
Q2 25
-29.5%
-63.6%
Q1 25
-79.1%
-64.1%
Q4 24
-30.0%
-55.4%
Q3 24
-52.6%
-69.4%
Q2 24
-68.2%
-73.7%
EPS (diluted)
FSP
FSP
LUNG
LUNG
Q1 26
$-0.33
Q4 25
$-0.06
$-0.25
Q3 25
$-0.08
$-0.34
Q2 25
$-0.08
$-0.38
Q1 25
$-0.21
$-0.36
Q4 24
$-0.09
$-0.33
Q3 24
$-0.15
$-0.36
Q2 24
$-0.20
$-0.39

Balance Sheet & Financial Strength

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

Metric
FSP
FSP
LUNG
LUNG
Cash + ST InvestmentsLiquidity on hand
$30.6M
$61.6M
Total DebtLower is stronger
$37.3M
Stockholders' EquityBook value
$607.0M
$45.8M
Total Assets
$892.9M
$120.0M
Debt / EquityLower = less leverage
0.82×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
FSP
FSP
LUNG
LUNG
Q1 26
$61.6M
Q4 25
$30.6M
$69.8M
Q3 25
$31.4M
$76.5M
Q2 25
$29.4M
$75.5M
Q1 25
$30.2M
$74.6M
Q4 24
$41.1M
$70.9M
Q3 24
$40.9M
$63.3M
Q2 24
$30.2M
$63.5M
Total Debt
FSP
FSP
LUNG
LUNG
Q1 26
$37.3M
Q4 25
$37.1M
Q3 25
$37.1M
Q2 25
$37.1M
Q1 25
$37.2M
Q4 24
$37.2M
Q3 24
$37.2M
Q2 24
$37.2M
Stockholders' Equity
FSP
FSP
LUNG
LUNG
Q1 26
$45.8M
Q4 25
$607.0M
$54.1M
Q3 25
$615.3M
$60.0M
Q2 25
$624.7M
$69.1M
Q1 25
$633.4M
$77.7M
Q4 24
$655.9M
$85.8M
Q3 24
$665.4M
$93.9M
Q2 24
$682.1M
$101.2M
Total Assets
FSP
FSP
LUNG
LUNG
Q1 26
$120.0M
Q4 25
$892.9M
$129.3M
Q3 25
$901.0M
$138.3M
Q2 25
$903.2M
$147.2M
Q1 25
$916.4M
$150.7M
Q4 24
$946.9M
$162.8M
Q3 24
$981.5M
$167.4M
Q2 24
$1.0B
$172.6M
Debt / Equity
FSP
FSP
LUNG
LUNG
Q1 26
0.82×
Q4 25
0.69×
Q3 25
0.62×
Q2 25
0.54×
Q1 25
0.48×
Q4 24
0.43×
Q3 24
0.40×
Q2 24
0.37×

Cash Flow & Capital Efficiency

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

Metric
FSP
FSP
LUNG
LUNG
Operating Cash FlowLast quarter
$3.8M
Free Cash FlowOCF − Capex
$-12.7M
FCF MarginFCF / Revenue
-48.6%
Capex IntensityCapex / Revenue
63.0%
Cash ConversionOCF / Net Profit
TTM Free Cash FlowTrailing 4 quarters
$-25.3M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
FSP
FSP
LUNG
LUNG
Q1 26
Q4 25
$3.8M
$-7.1M
Q3 25
$8.3M
$-8.2M
Q2 25
$-2.9M
$-3.9M
Q1 25
$-5.5M
$-13.2M
Q4 24
$9.0M
$-6.7M
Q3 24
$14.5M
$-7.2M
Q2 24
$-648.0K
$-5.8M
Free Cash Flow
FSP
FSP
LUNG
LUNG
Q1 26
Q4 25
$-12.7M
$-7.1M
Q3 25
$3.0M
$-8.3M
Q2 25
$-5.7M
$-4.0M
Q1 25
$-9.9M
$-13.5M
Q4 24
$-16.2M
$-6.8M
Q3 24
$8.6M
$-7.7M
Q2 24
$-5.1M
$-6.2M
FCF Margin
FSP
FSP
LUNG
LUNG
Q1 26
Q4 25
-48.6%
-31.4%
Q3 25
11.0%
-38.4%
Q2 25
-21.5%
-16.6%
Q1 25
-36.7%
-60.0%
Q4 24
-57.2%
-28.8%
Q3 24
29.1%
-37.6%
Q2 24
-16.7%
-30.0%
Capex Intensity
FSP
FSP
LUNG
LUNG
Q1 26
Q4 25
63.0%
0.1%
Q3 25
19.4%
0.4%
Q2 25
10.7%
0.2%
Q1 25
16.4%
1.3%
Q4 24
88.9%
0.5%
Q3 24
19.6%
2.0%
Q2 24
14.6%
2.3%

Financial Flow Comparison

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

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