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Pulmonx Corp

For the period ended Mar 31, 2025. Filed May 2, 2025.

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About this filing

A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Mar 31, 2025 · Filed May 2, 2025

LUNG$2.560.0%Stored close · as of Nov 6, 2026

What changed in Management’s Discussion and Analysis?

Read the current filing

Previous report: 10-Q

Period ended 2024-09-30; filed 2024-11-01.

0001127537-24-000087

Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

Current report: 10-Q

Period ended 2025-03-31; filed 2025-05-02.

0001127537-25-000026

Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

The baseline is this issuer’s latest earlier reporting period of the same form that was filed before the current report. A previous 10-Q is a different quarter, not a year-over-year comparison. Amendments are excluded.

Compared 115 previous paragraphs and 111 current paragraphs.

66 unchanged; 34 reworded; 11 added; 11 removed; 4 previous and 0 current paragraphs rearranged.

Tables are not compared: 3 previous and 2 current tables excluded. Dates, whitespace, punctuation and numbering changes are ignored; changes to financial figures remain significant.

A changed paragraph is not evidence that risk increased or decreased. An unchanged paragraph does not establish that risk stayed the same.

Added paragraphs (11)

Current report

In April 2025, we amended the terms of the CIBC Loan to extend the interest-only period through maturity, with the full principal repayment due in October 2027, and to modify certain financial covenants.
Removed paragraphs (11)

Previous report

Comparison of the Nine Months Ended September 30, 2024 and September 30, 2023

Previous report

Revenue increased by $10.6 million, or 21.5%, to $60.0 million during the nine months ended September 30, 2024, compared to $49.4 million during the nine months ended September 30, 2023. The sale of products in the United States increased by $8.4 million to $40.6 million during the nine months ended September 30, 2024, compared to $32.2 million during the nine months ended September 30, 2023. The sale of products in international markets increased by $2.2 million to $19.4 million during the nine months ended September 30, 2024, compared to $17.2 million for the nine months ended September 30, 2023. The increase in revenue reflects continued growth of Zephyr Valve procedure volumes in the United States and in international markets.

Previous report

Research and development expenses decreased by $0.6 million, or 4.3%, to $13.6 million during the nine months ended September 30, 2024, compared to $14.2 million during the nine months ended September 30, 2023. The decrease in research and development expense was primarily due to a decrease of $1.7 million in services and other expenses in support of product development, and a decrease of $0.4 million in costs associated with our clinical trials, including fees paid to clinical research organizations. These decreases were offset by a non-cash impairment charge of $1.7 million related to certain previously capitalized software development costs recorded in the second quarter of 2024.

Previous report

Interest expense increased by $0.4 million to $2.7 million during the nine months ended September 30, 2024 compared to $2.3 million during the nine months ended September 30, 2023, primarily due to higher interest rates. Interest income was $4.0 million during each of the nine months ended September 30, 2024 and September 30, 2023.

Previous report

Other income (expense), net increased by $0.5 million to $0.2 million income during the nine months ended September 30, 2024, compared to $(0.3) million expense during the nine months ended September 30, 2023, primarily due to foreign currency exchange gains.

Previous report

In June 2021, we entered into a First Amendment to the Amended and Restated CIBC Agreement that extended the compliance of certain post-close covenants to March 31, 2022.

Previous report

In May 2024, we entered into a Third Amendment to Office Lease and a Third Amendment to Sublease to extend the lease terms of our lease premises located in Redwood City, California through July 31, 2035. See Note 8, Commitments and Contingencies, to our condensed consolidated financial statements for more information.
Reworded paragraphs (34)

Previous wording

We are a commercial-stage medical technology company that provides a minimally invasive treatment for patients with severe emphysema, a form of chronic obstructive pulmonary disease (“COPD”). Our solution, which is comprised of the Zephyr Endobronchial Valve (“Zephyr Valve”), the Chartis Pulmonary Assessment System (“Chartis System”) and the LungTraX Platform (which is called the StratX Platform in our international markets), is designed to treat severe emphysema patients who, despite medical management, are still profoundly symptomatic and either do not want or are ineligible for surgical approaches.

Current wording

We are a commercial-stage medical technology company that provides a minimally invasive treatment for patients with severe emphysema, a form of chronic obstructive pulmonary disease. Our solution, which is comprised of the Zephyr Valve, the Chartis System and the LungTraX Platform, is designed to treat severe emphysema patients who, despite medical management, are still profoundly symptomatic and either do not want or are ineligible for surgical approaches.

Previous wording

We market and sell our products in the United States through a direct sales organization. Our sales territory managers are focused on promoting awareness and increasing adoption of our solution primarily among the pulmonologists performing interventional pulmonary procedures across approximately 500 high-volume hospitals in the United States. We are expanding our commercial operations in the United States while continuing to foster our international growth. We employ both direct and distributor-based sales models, with 96% of our revenue generated in markets where we sell directly for the nine months ended September 30, 2024.

Current wording

We market and sell our products in the United States through a direct sales organization. Our sales territory managers are focused on promoting awareness and increasing adoption of our solution primarily among the pulmonologists performing interventional pulmonary procedures across approximately 500 high-volume hospitals in the United States. We are expanding our commercial operations in the United States while continuing to foster our international growth. We employ both direct and distributor-based sales models, with 89% of our revenue generated in markets where we sell directly for the three months ended March 31, 2025.

Previous wording

In the United States, our solution is reimbursed based on established Category I Current Procedural Terminology (“CPT”) and ICD-10 Procedure Coding System (“PCS”) codes and associated APC and MS-DRG payment groupings. Current reimbursement in the United States is believed to cover the hospital costs of the procedure and related inpatient care. Commercial payors such as Aetna, Humana, and many of the largest Blue Cross Blue Shield plans including Anthem, Health Care Service Corporation, and BCBS Michigan have issued positive coverage policies for the Zephyr Valve, and United Healthcare no longer considers the procedure unproven or experimental. Medicare covers our solution for patients when medically necessary, and other commercial insurers are approving prior authorization requests on a case-by-case basis. Outside the United States, our solution is covered by major health systems across much of Europe, Australia, South Korea and Japan.

Current wording

In the United States, our solution is reimbursed based on established Category I Current Procedural Terminology (“CPT”) and ICD-10 Procedure Coding System (“PCS”) codes and associated APC and MS-DRG payment groupings. Current reimbursement in the United States is believed to cover the hospital costs of the procedure and related inpatient care. Commercial payors such as Aetna, Humana, and many of the largest Blue Cross Blue Shield plans including Anthem, Health Care Service Corporation, BCBS Michigan, and Highmark have all issued positive coverage policies for the Zephyr Valve, and United Healthcare no longer considers the procedure unproven or experimental. Medicare covers our solution for patients when medically necessary, and other commercial insurers are approving prior authorization requests on a case-by-case basis. Outside the United States, our solution is covered by major health systems across much of Europe, Australia, South Korea and Japan.

Previous wording

To date, we have financed our operations primarily through the sale of equity securities, debt financing arrangements and sales of our products. We have devoted substantially all of our resources to research and development activities related to our solution, including clinical and regulatory initiatives to obtain marketing approval, sales and marketing activities, and investing in general and administrative infrastructure. We generated revenue of $20.4 million, with a gross margin of 73.7% and a net loss of $14.1 million, for the three months ended September 30, 2024 compared to revenue of $17.7 million, with a gross margin of 73.7% and a net loss of $14.9 million, for the three months ended September 30, 2023. For the nine months ended September 30, 2024, we generated revenue of $60.0 million, with a gross margin of 74.0% and a net loss of $43.2 million, compared to revenue of $49.4 million, with a gross margin of 73.6% and a net loss of $47.0 million, for the nine months ended September 30, 2023. As of September 30, 2024, we had an accumulated deficit of $454.4 million, cash, cash equivalents and marketable securities of $107.8 million, and $37.2 million of outstanding term loans and credit agreements, net of debt discount and debt issuance costs.

Current wording

To date, we have financed our operations primarily through the sale of our products, the sale of equity securities, and debt financing arrangements. We have devoted substantially all of our resources to research and development activities related to our solution, including clinical and regulatory initiatives to obtain marketing approval, sales and marketing activities, and investing in general and administrative infrastructure. We generated revenue of $22.5 million, with a gross margin of 72.5% and a net loss of $14.4 million, for the three months ended March 31, 2025 compared to revenue of $18.9 million, with a gross margin of 74.7% and a net loss of $13.7 million, for the three months ended March 31, 2024. As of March 31, 2025, we had an accumulated deficit of $482.0 million, cash, cash equivalents and marketable securities of $88.7 million, and $37.2 million of outstanding term loans and credit agreements, net of debt discount and debt issuance costs.

Previous wording

Valves. In addition, we intend to continue to publish additional clinical data in various industry and scientific journals and online and to present at various industry conferences. We plan to continue building patient awareness through our direct-to-patient marketing initiatives, which include advertising, social media and online education. We also intend to continue helping physicians in their outreach to patients and other healthcare providers. These efforts require significant investment by our marketing and sales organization, and vary depending upon the physician’s practice specialization, and personal preferences and geographic location of physicians, pulmonary rehabilitation centers and patients. In order to grow our business, we will need to continue to make significant investments in training and educating hospitals, physicians and patients on the advantages of our solution for the treatment of severe emphysema.

Current wording

We intend to continue to promote awareness of our solution through training and educating physicians, pulmonary rehabilitation centers, key opinion leaders and various medical societies on the proven clinical benefits of Zephyr Valves. In addition, we intend to continue to publish additional clinical data in various industry and scientific journals and online and to present at various industry conferences. We plan to continue building patient awareness through our direct-to-patient marketing initiatives, which include advertising, social media and online education. We also intend to continue helping physicians in their outreach to patients and other healthcare providers. These efforts require significant investment by our marketing and sales organization, and vary depending upon the physician’s practice specialization, and personal preferences and geographic location of physicians, pulmonary rehabilitation centers and patients. In order to grow our business, we will need to continue to make significant investments in training and educating hospitals, physicians and patients on the advantages of our solution for the treatment of severe emphysema.

Previous wording

Since achieving regulatory approval in the United States in June 2018, we have launched the Zephyr Valve treatment and have made progress securing third-party payor reimbursement. The majority of our patients are Medicare beneficiaries. We estimate that roughly 75% of the potential Zephyr Valve patient population are Medicare/Medicaid beneficiaries, of which approximately 30% have managed Medicare/Medicaid and the remaining 45% have traditional Medicare/Medicaid. Approximately 25% of the potential Zephyr Valve patient population is under third-party commercial payor policies. We continue to work to broaden our coverage by private third-party payor policies. Commercial payors such as Aetna, Humana, and many of the largest Blue Cross Blue Shield plans including Anthem, Health Care Service Corporation, BCBS Michigan, and Highmark have issued positive coverage policies for the Zephyr Valve, and United Healthcare no longer considers the procedure unproven or experimental. Some commercial payors do not yet consider our solution medically necessary, but these same plans are approving prior authorization requests on a case-by-case basis. Medicare, currently without a public coverage policy, covers our solution for patients when medically necessary on a case-by-case basis and other commercial insurers not described above are approving prior authorization requests on a case-by-case basis.

Current wording

Since achieving regulatory approval in the United States in 2018, we have launched the Zephyr Valve treatment and have made progress securing third-party payor reimbursement. The majority of our patients are Medicare-eligible beneficiaries. We estimate that roughly 75% of the potential Zephyr Valve patient population are Medicare beneficiaries, 5% are Medicaid beneficiaries, and 20% of the potential Zephyr Valve patient population is under third-party commercial payor policies or other government programs. We continue to work to broaden our coverage by private third-party payor policies. Commercial payors such as Aetna, Humana, and many of the largest Blue Cross Blue Shield plans including Anthem, Health Care Service Corporation, BCBS Michigan, and Highmark have issued positive coverage policies for the Zephyr Valve, and United Healthcare no longer considers the procedure unproven or experimental. Some commercial payors do not yet consider our solution medically necessary, but these same plans are approving prior authorization requests on a case-by-case basis. Medicare, currently without a public coverage policy, covers our solution for patients when medically necessary on a case-by-case basis and other commercial insurers not described above are approving prior authorization requests on a case-by-case basis.

Previous wording

We have a dedicated patient reimbursement support team in the United States that works collaboratively with patients and providers to help secure the appropriate prior authorization approvals in advance of treatment. We continue to educate private insurers in the United States on our clinical data and patient selection tools in an effort to continue to expand the number of positive coverage policies, in order to increase our revenue. Outside of the United States, our solution is covered by major health systems across much of Europe, Australia, South Korea and Japan.

Current wording

We have a dedicated patient reimbursement support team in the United States that works collaboratively with patients and providers to help secure the appropriate prior authorization approvals in advance of treatment. Through this program, we continue to educate private insurers in the United States on our clinical data and patient selection tools in an effort to continue to expand the number of positive coverage policies. Outside of the United States, our solution is covered by major health systems across much of Europe, Australia, South Korea and Japan.

Previous wording

We currently derive substantially all of our revenue from the sale of our products to hospitals and distributors. We market and sell our products through a direct sales organization in the United States and through direct sales and several third-party distributors in select markets outside the United States. We currently generate most of our revenue from the sales of Zephyr Valves and delivery catheters. We also generate a smaller amount of our revenue from our Chartis System, which is comprised of sales of the balloon catheters, usage fees and sales of the Chartis console. The LungTraX Platform, which is used to identify patients eligible for treatment with Zephyr Valves, has not independently generated any revenue for us. No single customer accounted for more than 10% of our revenue during the nine months ended September 30, 2024 and September 30, 2023.

Current wording

We currently derive substantially all of our revenue from the sale of our products to hospitals and distributors. We market and sell our products through a direct sales organization in the United States and through direct sales and several third-party distributors in select markets outside the United States. We currently generate most of our revenue from the sales of Zephyr Valves and delivery catheters. We also generate a smaller amount of our revenue from our Chartis System, which is comprised of sales of the balloon catheters, usage fees and sales of the Chartis console. The LungTraX Platform, which is used to identify patients eligible for treatment with Zephyr Valves, has not independently generated any revenue for us. We had one customer that accounted for 10% of our revenue for the three months ended March 31, 2025. No customer accounted for more than 10% of our revenue for the three months ended March 31, 2024.

Previous wording

Other (expense) income, net primarily consists of foreign currency exchange gains and losses.

Current wording

Other income, net primarily consists of foreign currency exchange gains and losses.

Previous wording

Revenue increased by $2.7 million, or 15.4%, to $20.4 million during the three months ended September 30, 2024, compared to $17.7 million during the three months ended September 30, 2023. The sale of products in the United States increased by $2.0 million to $13.8 million during the three months ended September 30, 2024, compared to $11.8 million for the three months ended September 30, 2023. The sale of products in international markets increased by $0.7 million to $6.6 million during the three months ended September 30, 2024, compared to $5.8 million for the three months ended September 30, 2023. The increase in revenue was primarily attributable to the continued growth of Zephyr Valve procedure volumes in the United States and in international markets.

Current wording

Revenue increased by $3.7 million, or 19.5%, to $22.5 million for the three months ended March 31, 2025, compared to $18.9 million for the three months ended March 31, 2024. The sale of products in the United States increased by $1.3 million to $14.2 million for the three months ended March 31, 2025, compared to $12.9 million for the three months ended March 31, 2024. The sale of products in international markets increased by $2.3 million to $8.3 million for the three months ended March 31, 2025, compared to $6.0 million for the three months ended March 31, 2024. The increase in revenue was primarily attributable to the continued volume growth of Zephyr Valve sales in the United States and in international markets.

Previous wording

Cost of goods sold increased by $0.7 million, or 15.6%, to $5.4 million during the three months ended September 30, 2024, compared to $4.6 million during the three months ended September 30, 2023. The increase was mainly due to an increase in the number of products sold and increased manufacturing costs as we invested to support anticipated growth. Gross margin was 73.7% during the three months ended September 30, 2024 and September 30, 2023.

Current wording

Cost of goods sold increased by $1.4 million, or 29.7%, to $6.2 million for the three months ended March 31, 2025, compared to $4.8 million for the three months ended March 31, 2024. The increase was mainly due to an increase in the number of products sold and increased manufacturing costs as we invested to support anticipated growth. Gross margin decreased by 2.2% to 72.5% for the three months ended March 31, 2025, compared to 74.7% for the three months ended March 31, 2024. The decrease in gross margin was primarily due to geographic mix during the three months ended March 31, 2025.

Previous wording

Research and development expenses decreased by $0.5 million, or 11.3%, to $3.7 million during the three months ended September 30, 2024, compared to $4.2 million during the three months ended September 30, 2023. The decrease in research and development expense was primarily due to a decrease of $0.6 million in services and other expenses in support of product development, and a decrease of $0.2 million in personnel related expenses including stock-based compensation. These decreases were offset by an increase of $0.3 million in costs associated with our clinical trials, including fees paid to clinical research organizations.

Current wording

Research and development expenses increased by $0.6 million, or 13.0%, to $4.8 million for the three months ended March 31, 2025, compared to $4.2 million for the three months ended March 31, 2024. The increase in research and development expense was primarily due to an increase of $0.5 million in costs associated with our clinical trials, including fees paid to clinical research organizations, and an increase of $0.2 million in services and other expenses in support of product development.

Previous wording

Selling, general and administrative expenses increased by $4.9 million, or 7.0%, to $75.1 million during the nine months ended September 30, 2024, compared to $70.2 million during the nine months ended September 30, 2023. The increase in selling, general and administrative expenses was primarily due to an increase of $2.2 million in advertising and marketing related expenses, an increase of $1.3 million in payroll and personnel-related expenses including stock-based compensation for our sales, marketing and administrative personnel, an increase of $0.8 million in travel and conference related expenses, and an increase of $0.6 million in legal and other professional expenses.

Current wording

Selling, general and administrative expenses increased by $1.7 million, or 7.2%, to $26.1 million for the three months ended March 31, 2025, compared to $24.4 million for the three months ended March 31, 2024. The increase in selling, general and administrative expenses was primarily due to an increase of $1.9 million in advertising and marketing related expenses, an increase of $0.3 million in payroll and personnel-related expenses for our sales, marketing and administrative personnel, and an increase of $0.3 million in travel and conference related expenses. These increases were offset by a decrease of $0.8 million in legal and other professional expenses.

Previous wording

Interest expense was $0.9 million during each of the three months ended September 30, 2024 and September 30, 2023. Interest income decreased by $0.2 million to $1.3 million during the three months ended September 30, 2024 compared to $1.5 million during the three months ended September 30, 2023. The decrease was primarily due to a lower balance of cash, cash equivalents, and marketable securities, which resulted in reduced returns on these assets.

Current wording

Interest expense decreased by $0.1 million to $0.8 million for the three months ended March 31, 2025 compared to $0.9 million for the three months ended March 31, 2024, primarily due to lower interest rates. Interest income decreased by $0.6 million to $0.9 million for the three months ended March 31, 2025 compared to $1.5 million for the three months ended March 31, 2024. The decrease was primarily due to a lower balance of cash, cash equivalents, and marketable securities, which resulted in reduced returns on these assets.

Previous wording

Other expense, net was $0.2 million during the three months ended September 30, 2024 and $0.3 million during the three months ended September 30, 2023, primarily due to foreign currency exchange losses.

Current wording

Other income, net was $0.2 million for the three months ended March 31, 2025 and $0.4 million for the three months ended March 31, 2024, primarily due to foreign currency exchange gains.

Previous wording

To date, we have financed our operations primarily through our initial public offering, private placements of equity securities, debt financing arrangements and sales of our products. As of September 30, 2024, we had cash, cash equivalents and marketable securities of $107.8 million, an accumulated deficit of $454.4 million, and $37.2 million outstanding under the CIBC Loan and Credit Agreement, net of debt discount and debt issuance costs.

Current wording

To date, we have financed our operations primarily through our initial public offering, private placements of equity securities, debt financing arrangements and sales of our products. As of March 31, 2025, we had cash, cash equivalents and marketable securities of $88.7 million, an accumulated deficit of $482.0 million, and $37.2 million outstanding under the CIBC Loan and Credit Agreement, net of debt discount and debt issuance costs.

Previous wording

On February 20, 2020, we executed a Loan and Security Agreement with Canadian Imperial Bank of Commerce (“CIBC”), which we subsequently amended on April 17, 2020 and December 28, 2020 (as amended, the “CIBC Agreement”). The CIBC Agreement originally provided us with the ability to borrow up to $32.0 million in debt financing consisting of $17.0 million advanced at the closing of the agreement (“Tranche A”), with the option to draw up to an additional $8.0 million (“Tranche B”) on or before February 20, 2022 and an additional $7.0 million (“Tranche C”) on or before February 20, 2022. Neither Tranche B nor Tranche C was drawn before the February 2022 expiration date.

Current wording

In February 2020, we executed a Loan and Security Agreement with Canadian Imperial Bank of Commerce (“CIBC”), which we subsequently amended in April 2020 and December 2020 (as amended, the “CIBC Agreement”). The CIBC Agreement originally provided us with the ability to borrow up to $32.0 million in debt financing (“CIBC Loan”) consisting of $17.0 million advanced at the closing of the agreement (“Tranche A”), with the option to draw up to an additional $8.0 million (“Tranche B”) and an additional financing tranche (“Tranche C”) of up to $7.0 million on or prior to February 20, 2022. Neither Tranche B nor Tranche C was drawn before the option expired.

Previous wording

In March 2021, we entered into an Amended and Restated Loan and Security Agreement with CIBC (as amended, the “Amended and Restated CIBC Agreement”) which, among other things, extended the loan maturity date under the CIBC Agreement from March 15, 2022 to February 20, 2025, and modified certain financial covenants.

Current wording

In March 2021, we entered into an Amended and Restated Loan and Security Agreement with CIBC (as amended, the “Amended and Restated CIBC Agreement”) which, among other things, extended the loan maturity date of the CIBC Loan from March 15, 2022 to February 20, 2025, and modified certain financial covenants.

Previous wording

In October 2021, we entered into a Second Amendment to the Amended and Restated CIBC Agreement, which extended the interest only period of the loan from 24 months to 36 months. Under the amended terms, principal repayment would begin in February 2023. There was no change to the loan interest rate or maturity date.

Current wording

In October 2021, we entered into a Second Amendment to the Amended and Restated CIBC Agreement, which extended the interest only period of the loan from 24 months to 36 months. Under the amended terms, principal repayment would begin in February 2023.

Previous wording

In May 2024, as a result of us satisfying certain conditions set forth in the Third Amendment, we extended the interest-only period of the CIBC Loan from 24 months to 36 months. Principal repayment will begin in November 2025. There was no change to the loan interest rate, maturity date, or other terms of the loan.

Current wording

In May 2024, as a result of satisfying certain conditions set forth in the Third Amendment, we extended the interest-only period of the CIBC Loan from 24 months to 36 months. Principal repayment will begin in November 2025. There was no change to the loan interest rate, maturity date, or other terms of the loan.

Previous wording

The loans provided under the Amended and Restated CIBC Agreement bear interest at a floating rate equal to 1.0% above the Wall Street Journal Prime Rate at any time. The loans are collateralized by substantially all of our assets, including cash and cash equivalents, accounts receivable, intellectual property and equipment. We may prepay the loans, subject to certain conditions, including a prepayment fee equal to 2.0% of the principal amount prepaid during the first year after the effective date of the Third Amendment or 1.0% of the principal amount prepaid during the second year after the effective date of the Third Amendment. The Amended and Restated CIBC Agreement contains financial covenants that require us to maintain minimum cash and minimum revenue amounts, and the Amended and Restated CIBC Agreement contains other customary restrictive covenants, representations and warranties, events of default and other customary terms and conditions.

Current wording

The loans provided under the Amended and Restated CIBC Agreement bear interest at a floating rate equal to 1.0% above the Wall Street Journal Prime Rate at any time. The loans are collateralized by substantially all of our assets, including cash and cash equivalents, accounts receivable, intellectual property and equipment. We may prepay the loans, subject to certain conditions. The Amended and Restated CIBC Agreement contains financial covenants that require us to maintain minimum cash and minimum revenue amounts, and the Amended and Restated CIBC Agreement contains other customary restrictive covenants, representations and warranties, events of default and other customary terms and conditions.

Previous wording

We paid $0.5 million fees to the lender and third parties which is reflected as a discount on the loans provided under the Amended and Restated CIBC Agreement and is being accreted over the life of the loan using the effective interest method. During the three months ended September 30, 2024 and September 30, 2023, we recorded interest expense related to debt discount and debt issuance costs of the CIBC Loan of less than $0.1 million and less than $0.1 million, respectively. During the nine months ended September 30, 2024 and September 30, 2023, we recorded interest expense related to debt discount and debt issuance costs of the CIBC Loan of less than $0.1 million and less than $0.1 million, respectively.

Current wording

We paid $0.5 million fees to the lender and third parties which is reflected as a discount on the loans provided under the Amended and Restated CIBC Agreement and is being accreted over the life of the loan using the effective interest method. During each of the three months ended March 31, 2025 and March 31, 2024, we recorded interest expense related to debt discount and debt issuance costs of the CIBC Loan of less than $0.1 million.

Previous wording

Interest expense on the CIBC Loan was $0.9 million during each of the three months ended September 30, 2024 and September 30, 2023. Interest expense on the CIBC Loan was $2.7 million and $2.3 million during the nine months ended September 30, 2024 and September 30, 2023, respectively.

Current wording

Interest expense on the CIBC Loan was $0.8 million and $0.9 million during the three months ended March 31, 2025 and March 31, 2024, respectively.

Previous wording

In May 2020, Pulmonx International Sàrl, our wholly owned subsidiary, received 0.5 million Swiss Francs ($0.5 million U.S. dollar equivalent) from a COVID-19 Credit Agreement under a Swiss Federal Government program designed to mitigate the economic impact of the spread of the coronavirus. The COVID-19 Credit Agreement bore no interest through March 31, 2023. Beginning April 1, 2023, the loan bears interest at a rate of 1.5% per year, payable at the end of each calendar quarter. The loan principal is being repaid in twelve equal installments, paid semi-annually, which began in March of 2022. As of September 30, 2024, Pulmonx International Sàrl has repaid $0.2 million to the lender.

Current wording

In May 2020, Pulmonx International Sàrl, our wholly owned subsidiary, received 0.5 million Swiss Francs ($0.5 million U.S. dollar equivalent) from a COVID-19 Credit Agreement under a Swiss Federal Government program. The COVID-19 Credit Agreement currently bears interest at a rate of 1.5% per year, payable at the end of each calendar quarter. The loan principal is being repaid in twelve equal installments, paid semi-annually, which began in March of 2022. As of March 31, 2025, Pulmonx International Sàrl has repaid $0.3 million to the lender.

Previous wording

Net cash used in operating activities was $24.8 million for the nine months ended September 30, 2024. Cash used in operating activities was primarily a result of the net loss of $43.2 million, a decrease in accrued liabilities of $3.5 million primarily due to payment of incentive compensation expense associated with the achievement of performance objectives, a decrease in lease liabilities of $1.9 million due to lease payments, amortization of premiums and discounts on marketable securities of $1.3 million, and an increase in prepaid expenses and other current assets of $0.3 million. This is partially offset by stock-based compensation expense of $17.4 million, an increase in accounts payable of $3.0 million due to timing of payments to our vendors, a non-cash impairment charge of $1.7 million related to certain previously capitalized software development costs recorded in the second quarter of 2024, non-cash lease expense of $1.5 million, depreciation and amortization expense of $1.2 million, and a decrease in accounts receivable of $0.4 million due to the timing of payments from our customers.

Current wording

Net cash used in operating activities was $13.2 million for the three months ended March 31, 2025. Cash used in operating activities was primarily a result of the net loss of $14.4 million, a decrease in accrued liabilities of $4.9 million primarily due to payment of incentive compensation expense associated with the achievement of performance objectives, an increase in accounts receivable of $0.7 million due to the timing of payments from our customers, an increase in other assets of $0.4 million primarily due to capitalized implementation costs of a hosting arrangement, and amortization of premiums and discounts on marketable securities of $0.2 million. This is partially offset by stock-based compensation expense of $5.6 million, an increase in accounts payable of $0.5 million due to timing of payments to our vendors, a decrease in inventory of $0.4 million due to shipment of products, non-cash lease expense of $0.4 million, a decrease in prepaid expenses and other current assets of $0.3 million primarily due to the timing of payments to our vendors, and depreciation and amortization expense of $0.3 million.

Previous wording

Net cash used in operating activities was $29.2 million for the nine months ended September 30, 2023. Cash used in operating activities was primarily a result of the net loss of $47.0 million, an increase in accounts receivable of $1.3 million, an increase in inventory of $0.4 million due to continued production to build inventory to meet projected increase in sales and to protect against potential supply interruptions, a decrease in lease liabilities of $2.4 million due to lease payments, and amortization of premiums and discounts on marketable securities of $0.7 million, partially offset by an increase in accounts payable of $1.4 million due to timing of payments to our vendors, an increase in accrued liabilities of $0.9 million, stock-based compensation expense of $16.5 million, non-cash lease expense of $2.0 million, depreciation and amortization expense of $1.3 million and write-down of inventory of $0.9 million.

Current wording

Net cash used in operating activities was $11.8 million for the three months ended March 31, 2024. Cash used in operating activities was primarily a result of the net loss of $13.7 million, a decrease in accrued liabilities of $6.0 million due to payment of incentive compensation expense associated with the achievement of performance objectives, an increase in inventory of $1.1 million due to continued production to build inventory to meet projected increase in sales and to protect against potential supply interruptions, and a decrease in lease liabilities of $0.8 million due to lease payments. This is partially offset by stock-based compensation expense of $5.7 million, an increase in accounts payable of $1.6 million due to timing of payments to our vendors, a decrease in accounts receivable of $1.4 million due to the timing of payments from our customers, and non-cash lease expense of $0.7 million.

Previous wording

Net cash provided by investing activities in the nine months ended September 30, 2024 was $3.4 million, consisting of proceeds from maturities of marketable securities of $31.2 million, offset by purchases of marketable securities of $26.4 million and purchases of property and equipment of $1.3 million.

Current wording

Net cash provided by investing activities in the three months ended March 31, 2025 was $16.3 million, consisting of proceeds from maturities of marketable securities of $20.5 million, offset by purchases of marketable securities of $3.9 million and purchases of property and equipment of $0.3 million.

Previous wording

Net cash provided by investing activities in the nine months ended September 30, 2023 was $0.7 million, consisting of proceeds from maturities of marketable securities of $42.8 million, offset by purchases of marketable securities of $41.4 million and purchases of property and equipment of $0.6 million.

Current wording

Net cash used in investing activities in the three months ended March 31, 2024 was $2.5 million, consisting of purchases of marketable securities of $13.8 million and purchases of property and equipment of $0.5 million, offset by proceeds from maturities of marketable securities of $11.8 million.

Previous wording

Net cash provided by financing activities in the nine months ended September 30, 2024 was $1.3 million, consisting of proceeds from the issuance of common stock under the employee stock purchase plan of $1.2 million and proceeds from the exercise of common stock options of $0.1 million, offset by repayment of debt under the Credit Agreement of less than $0.1 million.

Current wording

Net cash provided by financing activities in the three months ended March 31, 2025 was $0.7 million, consisting of proceeds from the issuance of common stock under the employee stock purchase plan of $0.6 million and proceeds from the exercise of common stock options of $0.1 million.

Previous wording

Net cash provided by financing activities in the nine months ended September 30, 2023 of $21.4 million primarily relates to proceeds of $20.0 million from borrowing under the Amended and Restated CIBC Agreement, proceeds from issuance of common stock under the employee stock purchase plan of $1.2 million and proceeds from exercise of common stock options of $0.2 million.

Current wording

Net cash provided by financing activities in the three months ended March 31, 2024 was $0.9 million, consisting of proceeds from the issuance of common stock under the employee stock purchase plan of $0.8 million and proceeds from the exercise of common stock options of $0.1 million.

Previous wording

Our net cash operating expenditures were $24.8 million in the nine months ended September 30, 2024 and $29.2 million in the nine months ended September 30, 2023. We intend to continue to make investments in the development of our products, including ongoing research and development programs. Our cash outflows for capital expenditures were $1.3 million and $0.6 million in the nine months ended September 30, 2024 and September 30, 2023, respectively, and we expect to maintain the level of expenditures in the future to support our commercial infrastructure, sales force and other commercialization efforts. Recent and expected working and other capital requirements include amounts related to future lease payments for operating lease obligations, which totaled $31.4 million as of September 30, 2024, with $2.4 million expected to be paid within the next 12 months, and amounts related to future short-term and long-term debt which totaled $37.2 million, with $3.5 million due within the next 12 months. Lastly, we may undertake additional expenses to further expand our commercial organization and efforts, enhance our research and development efforts and pursue product expansion opportunities.

Current wording

Our net cash operating expenditures were $13.2 million in the three months ended March 31, 2025 and $11.8 million in the three months ended March 31, 2024. We intend to continue to make investments in the development of our products, including ongoing research and development programs. Our cash outflows for capital expenditures were $0.3 million and $0.5 million in the three months ended March 31, 2025 and March 31, 2024, respectively, and we expect to maintain the level of expenditures in the future to support our commercial infrastructure, sales force and other commercialization efforts. Recent and expected working and other capital requirements include amounts related to future lease payments for operating lease obligations, which totaled $31.4 million as of March 31, 2025, with $2.9 million expected to be paid within the next 12 months. Amounts related to future short-term and long-term debt payments totaled $37.2 million. In April 2025, we amended the terms of the CIBC Loan to extend the interest-only period through maturity, with full principal repayment due in October 2027. Under the amended agreement, $3.2 million of interest is expected to be paid within the next 12 months in connection with future debt payments. Lastly, we may undertake additional expenses to further expand our commercial organization and efforts, enhance our research and development efforts and pursue product expansion opportunities.

Previous wording

As of September 30, 2024, we had cash, cash equivalents and marketable securities of $107.8 million. Based on our current planned operations, we expect that our cash, cash equivalents and marketable securities will enable us to fund our operating expenses for at least 12 months from the issuance of our condensed consolidated financial statements as of and for the nine months ended September 30, 2024. We believe we will meet longer-term expected future cash requirements and obligations through a combination of available cash, cash equivalents and marketable securities, sales of our products, debt financings, and access to other public or private equity offerings. We have based these estimates on assumptions that may prove to be wrong, and we could utilize our available capital resources sooner than we expect.

Current wording

As of March 31, 2025, we had cash, cash equivalents and marketable securities of $88.7 million. Based on our current planned operations, we expect that our cash, cash equivalents and marketable securities will enable us to fund our operating expenses for at least 12 months from the issuance of our condensed consolidated financial statements as of and for the three months ended March 31, 2025. We believe we will meet longer-term expected future cash requirements and obligations through a combination of available cash, cash equivalents and marketable securities, sales of our products, debt financings, and access to other public or private equity offerings. We have based these estimates on assumptions that may prove to be wrong, and we could utilize our available capital resources sooner than we expect.

Previous wording

•the impact of any public health crises, such as COVID-19, on our business, financial condition and results of operations.

Current wording

•the impact of any public health crises on our business, financial condition and results of operations.

Previous wording

Our critical accounting policies are described under the heading “Management’s Discussion and Analysis of Financial Condition and Results of Operations—Critical Accounting Estimates” in our Annual Report on Form 10-K for the fiscal year ended December 31, 2023, filed with the SEC on February 27, 2024, and the notes to the unaudited condensed consolidated financial statements included in “Part I, Item 1 — Financial Statements” of this Quarterly Report on Form 10-Q. During the nine months ended September 30, 2024, except as described in Note 2 to the unaudited interim condensed financial statements appearing elsewhere in this Quarterly Report on Form 10-Q, there were no material changes to our critical accounting estimates from those discussed in our Annual Report on Form 10-K for the fiscal year ended December 31, 2023, filed with the SEC on February 27, 2024.

Current wording

Our critical accounting policies are described under the heading “Management’s Discussion and Analysis of Financial Condition and Results of Operations—Critical Accounting Estimates” in our Annual Report on Form 10-K for the fiscal year ended December 31, 2024, filed with the SEC on February 25, 2025, and the notes to the unaudited condensed consolidated financial statements included in “Part I, Item 1 — Financial Statements” of this Quarterly Report on Form 10-Q. During the three months ended March 31, 2025, except as described in Note 2 to the unaudited interim condensed financial statements appearing elsewhere in this Quarterly Report on Form 10-Q, there were no material changes to our critical accounting estimates from those discussed in our Annual Report on Form 10-K for the fiscal year ended December 31, 2024, filed with the SEC on February 25, 2025.
Rearranged previous paragraphs (4)

Previous report — wording carried elsewhere

We intend to continue to promote awareness of our solution through training and educating physicians, pulmonary rehabilitation centers, key opinion leaders and various medical societies on the proven clinical benefits of Zephyr

Previous report — wording carried elsewhere

Selling, general and administrative expenses increased by $1.4 million, or 5.9%, to $25.4 million during the three months ended September 30, 2024, compared to $24.0 million during the three months ended September 30, 2023. The increase in selling, general and administrative expenses was primarily due to an increase of $1.1 million in advertising and marketing related expenses, and an increase of $0.2 million in travel and conference related expenses.

Previous report — wording carried elsewhere

The following table summarizes our results of operations for the period indicated:

Previous report — wording carried elsewhere

Cost of goods sold increased by $2.6 million, or 19.7%, to $15.6 million during the nine months ended September 30, 2024, compared to $13.0 million during the nine months ended September 30, 2023. The increase was mainly due to an increase in the number of products sold and increased manufacturing costs as we invested to support anticipated growth. Gross margin was 74.0% during the nine months ended September 30, 2024, compared to 73.6% during the nine months ended September 30, 2023.