---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-23-253468"
form_type: "8-K"
ticker: "LUNG"
cik: "0001127537"
company_name: "Pulmonx Corp"
filed_at: "2023-10-10T23:59:59+00:00"
generated_at: "2026-06-10T02:01:30.311577+00:00"
event_type: "leadership"
sentiment: "positive"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# Pulmonx CFO Sung resigns; McKune interim CFO; Q3 revenue prelim ~$17.6M (+30% YoY)

## Summary
- CFO Derrick Sung resigned effective Oct 10, 2023 to pursue other opportunity; no disagreement with company.
- John McKune (VP, Corp Controller) appointed Interim CFO; receives $75k cash bonus and $75k RSU grant.
- Preliminary Q3 2023 revenue ~$17.6M, up ~30% YoY, a record quarter.
- Search for permanent CFO initiated; Sung remains advisory through Oct 31, then consulting through Mar 2024.

## SEC filing metadata
- accession: 0001193125-23-253468
- form_type: 8-K
- ticker: LUNG
- cik: 0001127537
- company_name: Pulmonx Corp
- filed_at: 2023-10-10T23:59:59+00:00
- event_type: leadership
- sentiment: positive
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 2.02, 5.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1127537/000119312523253468/0001193125-23-253468-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1127537/000119312523253468/d503275d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-23-253468
- JSON: https://secwatch.observer/filing/0001193125-23-253468.json
- Plain text: https://secwatch.observer/filing/0001193125-23-253468.txt

## Key facts
- Earnings Releases
  Pulmonx Corp reported third quarter 2023 results: revenue approximately $17.6 million.
  - Period: third quarter 2023
  - Revenue: approximately $17.6 million
  - Result: preliminary results
  source text: Preliminary, unaudited third quarter 2023 revenue expected to be approximately $17.6 million
  evidence_url: https://www.sec.gov/Archives/edgar/data/1127537/000119312523253468/0001193125-23-253468-index.htm
- Executive change
  Derrick Sung resigned as Chief Financial Officer at Pulmonx Corp.
  - Action: resigned
  - Role: Chief Financial Officer
  source text: On October 6, 2023, Derrick Sung, Ph.D., Chief Financial Officer of the Company, stepped down from his position, effective October 10, 2023 (the “ Effective Date ”), to pursue a new business opportunity.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1127537/000119312523253468/0001193125-23-253468-index.htm
- Executive change
  John McKune was appointed as Interim Chief Financial Officer at Pulmonx Corp.
  - Action: appointed
  - Role: Interim Chief Financial Officer
  source text: John McKune, Vice President, Corporate Controller of the Company, was appointed by the Board of Directors of the Company (the “ Board ”) to serve as the Interim Chief Financial Officer of the Company, effective as of the Effective Date.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1127537/000119312523253468/0001193125-23-253468-index.htm

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