---
schema_version: "secwatch.filing_event.v1"
accession: "0001628280-25-027605"
form_type: "8-K"
ticker: "MIR"
cik: "0001809987"
company_name: "Mirion Technologies, Inc."
filed_at: "2025-05-23T23:59:59+00:00"
generated_at: "2026-05-20T15:02:17.211066+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Mirion prices upsized $400M 0.25% convertible notes due 2030; repays $250M term loan

## Summary
- $400M aggregate principal (including $50M option exercise) of 0.25% convertible senior notes due 2030.
- Initial conversion price ~$23.11 per share, a 32.5% premium to $17.44 closing price.
- Net proceeds ~$387.7M; used $44.6M for capped calls, $250M to repay term loan, $31M for share repurchase at $17.44.
- Capped call transactions cap dilution at $34.88 per share (100% premium); cannot redeem notes before June 2028.
- Notes mature June 1, 2030; interest 0.25% payable semiannually starting Dec 1, 2025.

## SEC filing metadata
- accession: 0001628280-25-027605
- form_type: 8-K
- ticker: MIR
- cik: 0001809987
- company_name: Mirion Technologies, Inc.
- filed_at: 2025-05-23T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 1.01, 2.03, 3.02, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1809987/000162828025027605/0001628280-25-027605-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1809987/000162828025027605/mir-20250520.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001628280-25-027605
- JSON: https://secwatch.observer/filing/0001628280-25-027605.json
- Plain text: https://secwatch.observer/filing/0001628280-25-027605.txt

## Key facts
- Debt Financings
  Mirion Technologies, Inc. incurred convertible notes of $400.0 million aggregate principal amount of 0.25% Convertible Senior Notes due 2030 with U.S. Bank Trust Company, National Association at 0.25% maturing June 1, 2030.
  - Instrument: convertible notes
  - Principal: $400.0 million aggregate principal amount of 0.25% Convertible Senior Notes due 2030
  - Counterparty: U.S. Bank Trust Company, National Association
  - Rate: 0.25%
  - Maturity: June 1, 2030
  - Event: incurrence
  source text: On May 23, 2025, Mirion Technologies, Inc. (the “Company”) completed its previously announced private offering (the “Offering”) of $400.0 million aggregate principal amount of 0.25% Convertible Senior Notes due 2030 (the “Notes”), which includes the exercise in full of the initial purchasers’ option to purchase up to an additional $50.0 million principal amount of Notes.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1809987/000162828025027605/0001628280-25-027605-index.htm

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