---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-24-028640"
form_type: "8-K"
ticker: "SONX"
cik: "0001407973"
company_name: "Sonendo, Inc."
filed_at: "2024-03-08T23:59:59+00:00"
generated_at: "2026-06-05T00:28:15.766333+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Sonendo CFO Michael P. Watts resigns effective March 15; Chris Guo appointed Interim CFO

## Summary
- Michael P. Watts resigns as CFO, effective March 15, 2024, to pursue other opportunities; no disagreement with company.
- Chris Guo, VP Finance and Corporate Controller since July 2021, named Interim CFO.
- Watts will not receive severance but may provide consulting post-departure.
- Guo previously held finance roles at Evolus, Amphastar, and Ernst & Young; CPA with MAcc from Oklahoma.
- Board will search for permanent CFO.

## SEC filing metadata
- accession: 0000950170-24-028640
- form_type: 8-K
- ticker: SONX
- cik: 0001407973
- company_name: Sonendo, Inc.
- filed_at: 2024-03-08T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 5.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1407973/000095017024028640/0000950170-24-028640-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1407973/000095017024028640/sonx-20240304.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-24-028640
- JSON: https://secwatch.observer/filing/0000950170-24-028640.json
- Plain text: https://secwatch.observer/filing/0000950170-24-028640.txt

## Key facts
- Executive change
  Chris Guo was appointed as Interim Chief Financial Officer at Sonendo, Inc..
  - Action: appointed
  - Role: Interim Chief Financial Officer
  source text: Chris Guo, age 48, the Company’s Vice President Finance and Corporate Controller, has been appointed by the Board of Directors of the Company to serve as Interim Chief Financial Officer from March 15, 2024 until the appointment of Mr. Watts’ successor.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1407973/000095017024028640/0000950170-24-028640-index.htm
- Executive change
  Michael P. Watts resigned as Chief Financial Officer at Sonendo, Inc..
  - Action: resigned
  - Role: Chief Financial Officer
  source text: On March 4, 2024, Michael P. Watts provided notice of his resignation as Chief Financial Officer of Sonendo, Inc. (the “Company”), effective March 15, 2024, to pursue new opportunities.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1407973/000095017024028640/0000950170-24-028640-index.htm

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