---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-26-059404"
form_type: "8-K"
ticker: "APH"
cik: "0000820313"
company_name: "AMPHENOL CORP /DE/"
filed_at: "2026-05-12T20:15:17+00:00"
generated_at: "2026-05-12T20:16:18.955742+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Amphenol issues €1.1B in senior notes to refinance near-term debt

## Summary
- Issued €600M 3.375% Senior Notes due 2029 and €500M 3.875% Senior Notes due 2034.
- Net proceeds of approximately €1,093.1 million after underwriting discounts and expenses.
- Proceeds to repay borrowings under U.S. commercial paper program and 364-day term loan.
- Notes rank equally with existing unsecured senior debt; interest paid annually starting May 12, 2027.
- Make-whole redemption options apply prior to one month (2029 notes) or three months (2034 notes) before maturity.

## SEC filing metadata
- accession: 0001104659-26-059404
- form_type: 8-K
- ticker: APH
- cik: 0000820313
- company_name: AMPHENOL CORP /DE/
- filed_at: 2026-05-12T20:15:17+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 1.01, 2.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/820313/000110465926059404/0001104659-26-059404-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/820313/000110465926059404/tm2613386d5_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-26-059404
- JSON: https://secwatch.observer/filing/0001104659-26-059404.json
- Plain text: https://secwatch.observer/filing/0001104659-26-059404.txt

## Key facts
- Debt Financings
  AMPHENOL CORP /DE/ incurred senior notes of €600,000,000 aggregate principal amount of the Company's 3.375% Senior Notes due 2029 and €500,000,000 aggregate princip with underwriters (Barclays Bank PLC, Citigroup Global Markets Limited, Commerzbank Aktiengesellschaft, HSBC Bank plc, BNP PARIBAS, J.P. Morgan Securities plc, Mizuho International plc, Standard Chartered Bank, ING Bank N.V., Belgian Branch and Siebert Williams Shank & Co., LLC) at 3.375% per year and 3.875% per year maturing May 12, 2029 and May 12, 2034.
  - Instrument: senior notes
  - Principal: €600,000,000 aggregate principal amount of the Company's 3.375% Senior Notes due 2029 and €500,000,000 aggregate princip
  - Counterparty: underwriters (Barclays Bank PLC, Citigroup Global Markets Limited, Commerzbank Aktiengesellschaft, HSBC Bank plc, BNP PARIBAS, J.P. Morgan Securities plc, Mizuho International plc, Standard Chartered Bank, ING Bank N.V., Belgian Branch and Siebert Williams Shank & Co., LLC)
  - Rate: 3.375% per year and 3.875% per year
  - Maturity: May 12, 2029 and May 12, 2034
  - Event: incurrence
  source text: On May 12, 2026, Amphenol Corporation (the “Company”) issued and sold €600,000,000 aggregate principal amount of the Company’s 3.375% Senior Notes due 2029 (the “2029 Notes”) and €500,000,000 aggregate principal amount of the Company’s 3.875% Senior Notes due 2034 (the “2034 Notes” and, together with the 2029 Notes, the “Notes”), pursuant to the Company’s Registration Statement on Form S-3 (No. 333-293923) (the “Registration Statement”), including the related prospectus dated March 2, 2026, as supplemented by the prospectus supplement dated May 5, 2026.
  evidence_url: https://www.sec.gov/Archives/edgar/data/820313/000110465926059404/0001104659-26-059404-index.htm
- Material Agreements
  AMPHENOL CORP /DE/ entered into Underwriting Agreement with Barclays Bank PLC, Citigroup Global Markets Limited, Commerzbank Aktiengesellschaft, HSBC Bank plc, BNP PARIBAS, J.P. Morgan Securities plc, Mizuho International plc, Standard Chartered Bank, ING Bank N.V., Belgian Branch and Siebert Williams Shank & Co., LLC valued at €600,000,000 aggregate principal amount of the Company’s 3.375% Senior Notes due 2029 and €500,000,0 (effective 2026-05-05).
  - Action: entry
  - Agreement: notes offering
  - Counterparty: Barclays Bank PLC, Citigroup Global Markets Limited, Commerzbank Aktiengesellschaft, HSBC Bank plc, BNP PARIBAS, J.P. Morgan Securities plc, Mizuho International plc, Standard Chartered Bank, ING Bank N.V., Belgian Branch and Siebert Williams Shank & Co., LLC
  - Value: €600,000,000 aggregate principal amount of the Company’s 3.375% Senior Notes due 2029 and €500,000,0
  - Effective: 2026-05-05
  source text: The Notes were sold in an underwritten public offering pursuant to an underwriting agreement, dated May 5, 2026, by and between the Company and Barclays Bank PLC, Citigroup Global Markets Limited, Commerzbank Aktiengesellschaft, HSBC Bank plc, BNP PARIBAS, J.P. Morgan Securities plc, Mizuho International plc, Standard Chartered Bank, ING Bank N.V., Belgian Branch and Siebert Williams Shank & Co., LLC.
  evidence_url: https://www.sec.gov/Archives/edgar/data/820313/000110465926059404/0001104659-26-059404-index.htm

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