---
schema_version: "secwatch.filing_event.v1"
accession: "0001127537-23-000014"
form_type: "8-K"
ticker: "LUNG"
cik: "0001127537"
company_name: "Pulmonx Corp"
filed_at: "2023-05-02T23:59:59+00:00"
generated_at: "2026-06-16T02:39:18.707276+00:00"
event_type: "earnings"
sentiment: "positive"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# Pulmonx Q1 revenue $14.5M (+35% YoY); reaffirms FY 2023 guidance

## Summary
- Worldwide revenue $14.5M, up 35% YoY; U.S. revenue $9.3M (+55% YoY).
- Gross margin 73% vs. 75% in Q1 2022; net loss $15.9M ($0.42 per share).
- Adjusted EBITDA loss $11.2M vs. $11.8M in prior-year period.
- Added 15 new U.S. Zephyr Valve treatment centers in Q1 2023.
- Full-year 2023 guidance reaffirmed: revenue $63-65M; gross margin 73-74%.

## SEC filing metadata
- accession: 0001127537-23-000014
- form_type: 8-K
- ticker: LUNG
- cik: 0001127537
- company_name: Pulmonx Corp
- filed_at: 2023-05-02T23:59:59+00:00
- event_type: earnings
- sentiment: positive
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1127537/000112753723000014/0001127537-23-000014-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1127537/000112753723000014/lung-20230502.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001127537-23-000014
- JSON: https://secwatch.observer/filing/0001127537-23-000014.json
- Plain text: https://secwatch.observer/filing/0001127537-23-000014.txt

## Key facts
- Earnings Releases
  Pulmonx Corp reported first quarter of 2023 ended March 31, 2023 results: revenue $14.5 million, EPS $0.42 per share. Guidance reaffirmed.
  - Period: first quarter of 2023 ended March 31, 2023
  - Revenue: $14.5 million
  - EPS: $0.42 per share
  - Guidance: reaffirmed
  - Result: reported results
  source text: invasive treatments for lung disease, today reported financial results for the first quarter of 2023 ended March 31, 2023. Recent Highlights • Recorded worldwide revenue of $14.5 million in the first quarter of 2023, a 35% increase over the same period last year and an increase of 37% on a constant currency basis • Delivered $9.3 million in U.S. revenue in the
  evidence_url: https://www.sec.gov/Archives/edgar/data/1127537/000112753723000014/0001127537-23-000014-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.