---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-26-054141"
form_type: "8-K"
ticker: "DGX"
cik: "0001022079"
company_name: "QUEST DIAGNOSTICS INC"
filed_at: "2026-05-01T23:59:59+00:00"
generated_at: "2026-05-15T00:12:03.888780+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Quest Diagnostics prices $500M of 5.000% senior notes due 2036

## Summary
- $500M aggregate principal of 5.000% senior notes due 2036 priced under shelf registration.
- Net proceeds for general corporate purposes, may repay $500M 3.45% notes maturing June 1, 2026.
- Closing expected May 6, 2026, subject to customary closing conditions.
- Underwriting agreement with Goldman Sachs, J.P. Morgan, and Mizuho Securities.

## SEC filing metadata
- accession: 0001104659-26-054141
- form_type: 8-K
- ticker: DGX
- cik: 0001022079
- company_name: QUEST DIAGNOSTICS INC
- filed_at: 2026-05-01T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1022079/000110465926054141/0001104659-26-054141-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1022079/000110465926054141/tm2613096d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-26-054141
- JSON: https://secwatch.observer/filing/0001104659-26-054141.json
- Plain text: https://secwatch.observer/filing/0001104659-26-054141.txt

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