---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-26-057938"
form_type: "8-K"
ticker: "DGX"
cik: "0001022079"
company_name: "QUEST DIAGNOSTICS INC"
filed_at: "2026-05-08T23:59:59+00:00"
generated_at: "2026-05-14T19:28:58.710815+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

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

## Summary
- $500M aggregate principal, 5.000% coupon, maturity June 30, 2036.
- Interest payable semi-annually on June 30 and Dec 30, beginning Dec 30, 2026.
- Senior unsecured, ranks equally with existing senior debt; no sinking fund.
- Upon a change of control triggering event, repurchase at 101% plus accrued interest.
- Issued under existing indenture as supplemented by twenty-fourth supplemental indenture.

## SEC filing metadata
- accession: 0001104659-26-057938
- form_type: 8-K
- ticker: DGX
- cik: 0001022079
- company_name: QUEST DIAGNOSTICS INC
- filed_at: 2026-05-08T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 1.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1022079/000110465926057938/0001104659-26-057938-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1022079/000110465926057938/tm2613096d2_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-26-057938
- JSON: https://secwatch.observer/filing/0001104659-26-057938.json
- Plain text: https://secwatch.observer/filing/0001104659-26-057938.txt

## Source-grounded claims
- claim_id: d1f6423341a45356318fa5be7b38a05f8d320be1
  claim: QUEST DIAGNOSTICS INC entered into Indenture with The Bank of New York Mellon valued at $500,000,000 aggregate principal amount (effective 2026-05-06).
  evidence_excerpt: On May 6, 2026, Quest Diagnostics Incorporated (the “Company”) issued $500,000,000 aggregate principal amount of 5.000% senior notes due 2036 (the “Notes”).
  evidence_url: https://www.sec.gov/Archives/edgar/data/1022079/000110465926057938/0001104659-26-057938-index.htm

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