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Pulmonx (LUNG)
NASDAQ:LUNG

Pulmonx (LUNG) AI Stock Analysis

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LUNG

Pulmonx

(NASDAQ:LUNG)

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Neutral 46 (OpenAI - 5.2)
Rating:46Neutral
Price Target:
$1.50
▼(-16.67% Downside)
Action:ReiteratedDate:03/13/26
The score is held down primarily by weak financial performance: persistent large operating losses, ongoing cash burn, and a weakened balance sheet with higher leverage. Technicals are modestly supportive in the near term (above 20/50DMA with neutral RSI), but longer-term trend levels (below 100/200DMA) and a loss-driven valuation profile (negative P/E, no dividend yield provided) limit upside. Earnings call guidance improves the outlook on cost control and cash burn, but flat revenue guidance and execution risks keep the overall score below average.
Positive Factors
High Gross Margins
Sustained gross margins near the mid-70s percent indicate durable pricing power and favorable unit economics for the Zephyr valve. Combined with multi-year revenue growth from ~$33M to ~$84M, this margin profile gives the company a structural pathway to leverage fixed costs and move toward profitability as revenue stabilizes or grows.
Extended Liquidity and Debt Facility
The five-year, secured $60M facility (initial $40M draw) materially extends maturities and provides cushion to fund operations and clinical programs. The extended runway and explicit liquidity covenants reduce near-term refinancing risk and support execution on commercialization and pivotal trials without immediate funding pressure.
Cost Restructuring & Lower Cash Burn
Management's executed expense cuts and guidance for a ~30% reduction in cash burn are durable operational improvements. Lower ongoing cash consumption improves runway, reduces reliance on dilutive financing, and increases the chance that stronger gross margins translate into a sustainable path toward break-even as revenue execution normalizes.
Negative Factors
Persistent Cash Burn
Trailing cash outflows remain substantial and roughly track reported net losses, meaning losses are translating into real funding needs. Continued negative free cash flow limits strategic optionality, increases dilution or leverage risk if growth stalls, and requires consistent execution to avoid further weakening of the balance sheet.
U.S. Execution Disruption
High sales turnover and reorganizations have a structural impact on procedure-driven adoption in hospitals where relationship continuity matters. Disrupted account management can delay case volumes, slow new center ramp-ups, and lengthen the timetable to return U.S. growth, posing ongoing execution risk even after cost cutting.
Flat Near-Term Revenue Guidance
Management's guide for flat full-year revenue signals limited near-term top-line momentum and shows recovery is concentrated in back half of 2026. This compresses the margin of safety for investors and means improvements from cost cuts and liquidity depend heavily on delayed execution, China regulatory timing, and clinical progress.

Pulmonx (LUNG) vs. SPDR S&P 500 ETF (SPY)

Pulmonx Business Overview & Revenue Model

Company DescriptionPulmonx Corporation, a medical technology company, provides minimally invasive devices for the treatment of chronic obstructive pulmonary diseases. It offers Zephyr Endobronchial Valve, a solution for the treatment of bronchoscopic in adult patients with hyperinflation associated with severe emphysema; and Chartis Pulmonary Assessment System, a balloon catheter and console system with flow and pressure sensors that are used to assess the presence of collateral ventilation. The company also provides StratX Lung Analysis Platform, a cloud-based quantitative computed tomography analysis service that offers information on emphysema destruction, fissure completeness, and lobar volume to help identify target lobes for the treatment with Zephyr Valves. It serves emphysema patients in the United States, Europe, the Middle East, Africa, the Asia-Pacific, and internationally. The company was formerly known as Pulmonx and changed its name to Pulmonx Corporation in December 2013. Pulmonx Corporation was incorporated in 1995 and is headquartered in Redwood City, California.
How the Company Makes MoneyPulmonx generates revenue primarily through the sale of its medical devices, particularly the Zephyr Endobronchial Valve system, which is sold to hospitals and healthcare providers. The company also earns money from associated procedures, training, and support services related to the implantation of its devices. Additionally, Pulmonx may benefit from reimbursement agreements with insurance companies and government healthcare programs, which can enhance the adoption of their products. Strategic partnerships with healthcare institutions and participation in clinical trials may also contribute to increased visibility and sales of their products.

Pulmonx Earnings Call Summary

Earnings Call Date:Mar 04, 2026
(Q4-2025)
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% Change Since: |
Next Earnings Date:May 05, 2026
Earnings Call Sentiment Neutral
The call highlighted several meaningful positives — a strengthened balance sheet via a $60M credit facility, a >10% cost restructuring, guidance for a ~30% reduction in cash burn, improved gross margins, accelerating enrollment in the AeriSeal pivotal trial (potential ~20% TAM expansion), and quarter-over-quarter improvements in loss metrics. However, material near-term challenges remain: Q4 worldwide revenue declined 5% (U.S. down 11%), sales force turnover (roughly half the team) disrupted U.S. execution, China shipments and registration timing create first-half 2026 headwinds, and full-year revenue guidance implies essentially flat top-line growth. Management expects recovery in the back half of 2026 and double-digit global growth by Q4 2026 if execution holds. Overall, positives around financial flexibility and cost discipline are balanced by persistent revenue execution risks, particularly in the U.S. and China.
Q4-2025 Updates
Positive Updates
Refinanced Debt and Strengthened Balance Sheet
Closed a $60 million credit facility with a 5-year interest-only structure (initial $40M drawn to refinance prior loan; $20M incremental optional draw through 2027 subject to revenue milestones), extending debt maturity to 2031 and increasing financial flexibility.
Cost Restructuring and Lower Cash Burn
Executed cost restructuring reducing ongoing operating expenses by over 10% and guiding to a decrease in annual cash burn from $32M in 2025 to $23M in 2026 (nearly 30% reduction). Full year 2026 operating expense guidance $113M–$115M (inclusive of ~$21M stock comp) and excluding stock comp implies a 7%–9% decrease versus 2025.
Improved Gross Margin and Expense Controls
Q4 2025 gross margin improved to 77.6% from 74% prior year (FY gross margin 74%); Q4 operating expenses decreased 11% YoY to $27.4M (excluding stock-based comp down ~10%), reflecting implemented cost controls (notably lower SG&A in Q4: $22.9M vs $27.0M prior-year quarter).
International Full-Year Revenue Strength
Full year 2025 international revenue of $33.5M, up 23% YoY (19% on a constant currency basis); Q4 international revenue $8.5M, up 8% YoY (2% cc), driven by strength in major European markets.
Clinical Program Progress — AeriSeal (CONVERT II)
CONVERT II enrollment momentum accelerating after clinical leadership changes; enrollment expected to complete in 2027. Management estimates potential to expand total addressable market by ~20% globally if successful.
Improved Quarterly Profitability Metrics
Q4 2025 net loss narrowed to $10.4M ($0.25/share) from $13.2M ($0.33/share) prior year; Q4 adjusted EBITDA loss improved to $5.5M from $7.5M a year ago. Added 10 new U.S. treating centers during the quarter.
Negative Updates
Quarterly and U.S. Revenue Declines
Total worldwide revenue for Q4 2025 was $22.6M, down 5% YoY (7% decline on a constant currency basis). U.S. revenue in Q4 was $14.1M, an 11% decline YoY from $15.9M, reflecting continued weakness in the core U.S. business.
Full-Year Revenue Guidance Essentially Flat
Management guided full year 2026 revenue to $90M–$92M versus $90.5M reported for full year 2025, implying essentially flat year-over-year revenue and only a return to growth expected in the back half of 2026.
Sales Organization Disruption and High Turnover
Management attributed 2025 U.S. underperformance to internal execution issues: sales organization spread across too many initiatives, materially altered territory roles, suboptimal incentive structure, and churn amounting to roughly half of the sales force over the year — disrupting customer continuity and account management.
China Distributor and Regulatory Headwinds
Minimal shipments to China in the second half of 2025 and into early 2026 as distributor works through inventory; awaiting renewal of Chinese registration certificate expected in H2 2026 — driving adverse timing effects and first-half 2026 comps weakness.
Significant Full-Year Loss and Cash Decline
Full year 2025 net loss was $54M ($1.33/share). Cash, cash equivalents and marketable securities at Dec 31, 2025 were $69.8M, down $31.7M from Dec 31, 2024, reflecting substantial cash usage during the year.
Ongoing Operating Expense Base Still Elevated
Full year 2025 total operating expenses were $128.8M (up 1% YoY), with noncash stock-based compensation of $19.3M. Although reductions were taken, the underlying expense base remains elevated and R&D spend increased (Q4 R&D $4.6M vs $4.0M prior-year quarter) due to clinical activity.
Company Guidance
Pulmonx guided full-year 2026 revenue of $90–92 million, with gross margin of approximately 75% (expected slightly higher in H1 and lower in H2), and total operating expenses of $113–115 million inclusive of roughly $21 million of noncash stock‑based compensation (implying a 7–9% reduction in operating expenses ex‑SBC versus 2025). Management expects to cut annual cash burn to about $23 million in 2026 from $32 million in 2025 (≈30% reduction), to resume year‑over‑year U.S. and international revenue growth in the back half of the year and to be growing at double‑digit rates by Q4, while acknowledging minimal China sales in H1 with shipments resuming in H2. They also noted balance‑sheet support from $69.8 million of cash/marketable securities at year‑end 2025 and a $60 million credit facility ( $40 million initially drawn, $20 million incremental available through 2027 subject to revenue milestones, maturity extended to 2031), and reiterated that CONVERT II enrollment is expected to complete in 2027 and could expand TAM by ~20% globally.

Pulmonx Financial Statement Overview

Summary
Despite strong gross margins (~74–78%) and solid multi-year revenue expansion, TTM revenue dipped (-1.3%) and losses remain very large (operating/net loss roughly ~60% of revenue). Cash burn is still significant (TTM operating cash flow about -$32M; FCF about -$33M) and the balance sheet has weakened with higher leverage (debt-to-equity ~1.04) and materially reduced equity.
Income Statement
34
Negative
Revenue has expanded meaningfully over the multi-year period (from ~$33M in 2020 to ~$84M in 2024), but TTM (Trailing-Twelve-Months) revenue declined (-1.3% growth), signaling a near-term slowdown. Profitability remains the core issue: despite strong and stable gross margins (~74% in 2023–TTM), operating losses are very large and persistent (TTM operating loss and net loss each roughly ~60% of revenue). While margins have improved versus 2022–2023, the company is still far from break-even.
Balance Sheet
46
Neutral
Leverage has increased notably: debt is now about equal to equity in TTM (debt-to-equity ~1.04), up from a more conservative profile in 2020–2023. Equity has also fallen sharply (from ~$226M in 2020 to ~$54M in TTM), reflecting ongoing losses and weakening balance-sheet cushion. Total assets have trended down as well, and returns on equity remain deeply negative, which limits financial flexibility if losses persist.
Cash Flow
38
Negative
Cash burn remains significant: TTM (Trailing-Twelve-Months) operating cash flow is about -$32M and free cash flow about -$33M. The burn rate has improved versus 2021–2022 (when free cash flow was closer to -$45M to -$46M), but the business is still consuming cash rather than funding itself. Free cash flow has generally tracked the net loss (free cash flow roughly in line with net income), indicating losses are translating into real cash outflows rather than being mostly non-cash accounting items.
BreakdownDec 2025Dec 2024Dec 2023Dec 2022Dec 2021
Income Statement
Total Revenue90.50M83.79M68.67M53.66M48.42M
Gross Profit67.14M62.00M50.75M39.87M35.63M
EBITDA-52.61M-50.79M-55.09M-55.99M-46.62M
Net Income-54.00M-56.39M-60.84M-58.92M-48.66M
Balance Sheet
Total Assets129.29M162.85M177.78M193.68M235.17M
Cash, Cash Equivalents and Short-Term Investments70.01M101.48M117.10M141.14M180.04M
Total Debt56.36M56.47M41.42M24.40M26.46M
Total Liabilities75.17M77.04M59.47M39.67M41.93M
Stockholders Equity54.12M85.81M118.31M154.01M193.24M
Cash Flow
Free Cash Flow-32.90M-32.98M-38.42M-46.45M-45.10M
Operating Cash Flow-32.45M-31.54M-37.61M-45.14M-41.43M
Investing Cash Flow30.48M17.48M-2.01M-4.22M-46.26M
Financing Cash Flow903.00K1.36M21.40M2.47M4.50M

Pulmonx Technical Analysis

Technical Analysis Sentiment
Negative
Last Price1.80
Price Trends
50DMA
1.72
Negative
100DMA
1.83
Negative
200DMA
2.03
Negative
Market Momentum
MACD
0.02
Negative
RSI
47.37
Neutral
STOCH
36.71
Neutral
Evaluating momentum and price trends is crucial in stock analysis to make informed investment decisions. For LUNG, the sentiment is Negative. The current price of 1.8 is above the 20-day moving average (MA) of 1.61, above the 50-day MA of 1.72, and below the 200-day MA of 2.03, indicating a bearish trend. The MACD of 0.02 indicates Negative momentum. The RSI at 47.37 is Neutral, neither overbought nor oversold. The STOCH value of 36.71 is Neutral, not indicating any strong overbought or oversold conditions. Overall, these indicators collectively point to a Negative sentiment for LUNG.

Pulmonx Risk Analysis

Pulmonx disclosed 83 risk factors in its most recent earnings report. Pulmonx reported the most risks in the "Legal & Regulatory" category.
Finance & Corporate - Financial and accounting risks. Risks related to the execution of corporate activity and strategy
Latest Risks Added 0 New Risks

Pulmonx Peers Comparison

Overall Rating
UnderperformOutperform
Sector (51)
Financial Indicators
Name
Overall Rating
Market Cap
P/E Ratio
ROE
Dividend Yield
Revenue Growth
EPS Growth
66
Neutral
$88.19M17.283.64%16.88%
52
Neutral
$65.19M-5.13-15.11%-13.79%-132.21%
51
Neutral
$7.86B-0.30-43.30%2.27%22.53%-2.21%
51
Neutral
$153.51M-13.16-117.54%-1.32%55.62%
46
Neutral
$68.00M-1.67-82.79%15.59%4.13%
45
Neutral
$50.15M-4.18-243.68%-18.96%8.98%
44
Neutral
$32.77M-1.97-272.13%12.24%47.45%
* Healthcare Sector Average
Performance Comparison
Ticker
Company Name
Price
Change
% Change
LUNG
Pulmonx
1.61
-6.36
-79.80%
APYX
Apyx Medical
3.67
2.60
242.99%
XTNT
Xtant Medical Holdings
0.63
0.15
32.14%
SRTS
Sensus Healthcare
3.96
-0.78
-16.46%
TELA
TELA Bio
0.74
-1.62
-68.72%
ICCM
Icecure Medical
0.73
-0.71
-49.31%

Pulmonx Corporate Events

Business Operations and StrategyPrivate Placements and Financing
Pulmonx Secures New Term Loan and Issues Warrants
Positive
Mar 5, 2026

On March 2, 2026, Pulmonx Corporation entered into a new senior secured term loan facility of up to $60 million with Perceptive Credit Holdings V, LP, drawing an initial $40 million and gaining access to two additional $10 million tranches contingent on meeting specified revenue thresholds through 2027. The loan, maturing March 2, 2031, carries a floating interest rate with optional paid-in-kind interest for 36 months, is secured by substantially all company and key subsidiary assets, and requires Pulmonx to maintain minimum liquidity and revenue levels, with default provisions that could accelerate repayment.

As part of the financing, Pulmonx issued Perceptive a warrant on March 2, 2026 to purchase up to 1,000,000 common shares at a 25% premium to the recent 10-day volume-weighted average price and will issue additional warrants tied to any future delayed-draw borrowings under similar terms. Also on March 2, 2026, the company fully repaid and terminated its prior credit facility with Canadian Imperial Bank of Commerce without incurring early termination penalties, effectively refinancing its debt structure and adding equity-linked incentives for its new lender.

The most recent analyst rating on (LUNG) stock is a Buy with a $4.00 price target. To see the full list of analyst forecasts on Pulmonx stock, see the LUNG Stock Forecast page.

Glossary
BuyA stock rated as a "Buy" is expected to perform better than the overall market or a specific benchmark over the near-to-medium term. This rating suggests the stock is likely to deliver higher returns compared to other stocks in the same sector or market index. Note: This is not investment advice; please consult a financial advisor before making investment decisions.
HoldA stock rated as a "Hold" is expected to perform in line with the overall market or a specific benchmark. This rating indicates that the stock is neither particularly compelling nor unfavorable for investment. Note: This is not investment advice; please consult a financial advisor before making investment decisions.
SellA stock rated as a "Sell" is expected to perform worse than the overall market or a specific benchmark over the near-to-medium term. This rating suggests the stock may deliver lower returns compared to other stocks in the same sector or market index. Note: This is not investment advice; please consult a financial advisor before making investment decisions.

Disclaimer

This AI Analyst Stock Report is automatically generated by our AI systems using advanced algorithms and publicly available financial, technical, and market data. While the information provided aims to be accurate and insightful, it is intended for informational purposes only and should not be considered financial advice. Any content created by an AI (Artificial Intelligence) system may contain inaccuracies and/or contain errors. Investing in stocks carries inherent risks, and past performance is not indicative of future results. This report does not account for your personal financial circumstances, objectives, or risk tolerance. Always conduct your own research or consult with a qualified financial advisor before making investment decisions. The analysis and recommendations provided are based on historical and current data and may not fully reflect future market conditions or unexpected developments. Neither the creators of this report nor its affiliated entities guarantee the accuracy, completeness, or reliability of the information presented. Use this report at your own discretion and risk.Date of analysis: Mar 13, 2026