---
schema_version: "secwatch.filing_event.v1"
accession: "0001628280-23-034594"
form_type: "8-K"
ticker: "MIR"
cik: "0001809987"
company_name: "Mirion Technologies, Inc."
filed_at: "2023-10-18T23:59:59+00:00"
generated_at: "2026-06-09T21:55:21.092689+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.55
calibrated_materiality_score: 0.55
confidence: "high"
source: SEC EDGAR
---

# Mirion Medical Group President Michael Rossi resigns Nov 1; CEO Logan steps in

## Summary
- Michael Rossi resigns as Medical Group President, effective Nov 1, 2023, to become CEO at another public company.
- CEO Thomas Logan reassumes Medical Group President duties until a permanent successor is named.
- Rossi’s resignation is not due to any disagreement with the Company regarding operations, policies, or practices.

## SEC filing metadata
- accession: 0001628280-23-034594
- form_type: 8-K
- ticker: MIR
- cik: 0001809987
- company_name: Mirion Technologies, Inc.
- filed_at: 2023-10-18T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.55
- calibrated_materiality_score: 0.55
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1809987/000162828023034594/0001628280-23-034594-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1809987/000162828023034594/mir-20231018.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001628280-23-034594
- JSON: https://secwatch.observer/filing/0001628280-23-034594.json
- Plain text: https://secwatch.observer/filing/0001628280-23-034594.txt

## Key facts
- Executive change
  Michael Rossi resigned as Medical Group President at Mirion Technologies, Inc..
  - Action: resigned
  - Role: Medical Group President
  source text: On October 13, 2023, Mr. Michael Rossi, who has served as the Medical Group President of Mirion Technologies, Inc. (the “Company”), notified the Company of his decision to resign from his position, effective November 1, 2023, in order to assume a CEO role at another public company.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1809987/000162828023034594/0001628280-23-034594-index.htm

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