Quest Diagnostics Inc SEC filings DGX
Quest Diagnostics Inc has 1,001 filings in SEC EDGAR's recent list, going back to Aug 22, 2016. Its latest annual report, Form 10-K, was filed on Feb 26, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Oct 23, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on Oct 22, 2026 (other events). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 144 | Notice of proposed sale | Nov 3, 2026 | — |
| 4 | Insider transaction | Oct 28, 2026 | Oct 26, 2026 |
| 144 | Notice of proposed sale | Oct 26, 2026 | — |
| 4 | Insider transaction | Oct 23, 2026 | Oct 21, 2026 |
| 4 | Insider transaction | Oct 23, 2026 | Oct 21, 2026 |
| 4 | Insider transaction | Oct 23, 2026 | Oct 21, 2026 |
| 4 | Insider transaction | Oct 23, 2026 | Oct 21, 2026 |
| 4 | Insider transaction | Oct 23, 2026 | Oct 21, 2026 |
| 4 | Insider transaction | Oct 23, 2026 | Oct 21, 2026 |
| 4 | Insider transaction | Oct 23, 2026 | Oct 21, 2026 |
| 4 | Insider transaction | Oct 23, 2026 | Oct 21, 2026 |
| 10-Q | Quarterly report | Oct 23, 2026 | Sep 30, 2026 |
| 8-K |
Current report
Other events
|
Oct 22, 2026 | Oct 21, 2026 |
| 8-K |
Current report
Results of operations
|
Oct 22, 2026 | Oct 22, 2026 |
| 8-K |
Current report
Officer or director change
|
Oct 6, 2026 | Oct 6, 2026 |
| 4 | Insider transaction | Oct 2, 2026 | Oct 1, 2026 |
| 4 | Insider transaction | Sep 3, 2026 | Sep 1, 2026 |
| 144 | Notice of proposed sale | Sep 1, 2026 | — |
| 4 | Insider transaction | Aug 31, 2026 | Aug 28, 2026 |
| 144 | Notice of proposed sale | Aug 28, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2026 | — |
| 4 | Insider transaction | Jul 29, 2026 | Jul 28, 2026 |
| 144 | Notice of proposed sale | Jul 28, 2026 | — |
| 4 | Insider transaction | Jul 27, 2026 | Jul 22, 2026 |
| 4 | Insider transaction | Jul 27, 2026 | Jul 22, 2026 |
| 4 | Insider transaction | Jul 27, 2026 | Jul 22, 2026 |
| 4 | Insider transaction | Jul 27, 2026 | Jul 22, 2026 |
| 4 | Insider transaction | Jul 27, 2026 | Jul 22, 2026 |
| 4 | Insider transaction | Jul 27, 2026 | Jul 22, 2026 |
| 4 | Insider transaction | Jul 27, 2026 | Jul 22, 2026 |
| 4 | Insider transaction | Jul 27, 2026 | Jul 22, 2026 |
| 10-Q | Quarterly report | Jul 23, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations
|
Jul 23, 2026 | Jul 23, 2026 |
| 4 | Insider transaction | Jul 2, 2026 | Jul 1, 2026 |
| 11-K | Employee savings plan report | Jun 18, 2026 | Dec 31, 2025 |
| 4 | Insider transaction | Jun 8, 2026 | Jun 4, 2026 |
| 144 | Notice of proposed sale | Jun 4, 2026 | — |
| 4 | Insider transaction | Jun 2, 2026 | Jun 1, 2026 |
| 144 | Notice of proposed sale | Jun 1, 2026 | — |
| 4 | Insider transaction | May 21, 2026 | May 20, 2026 |
| 4 | Insider transaction | May 21, 2026 | May 20, 2026 |
| 4 | Insider transaction | May 21, 2026 | May 20, 2026 |
| 4 | Insider transaction | May 21, 2026 | May 20, 2026 |
| 4 | Insider transaction | May 21, 2026 | May 20, 2026 |
| 4 | Insider transaction | May 21, 2026 | May 20, 2026 |
| 4 | Insider transaction | May 21, 2026 | May 20, 2026 |
| 4 | Insider transaction | May 21, 2026 | May 20, 2026 |
| 4 | Insider transaction | May 21, 2026 | May 20, 2026 |
| 4 | Insider transaction | May 21, 2026 | May 20, 2026 |
| 8-K |
Current report
Shareholder vote results
|
May 21, 2026 | May 20, 2026 |
| 8-K |
Current report
Material agreement
|
May 8, 2026 | May 6, 2026 |
| 8-K |
Current report
Other events
|
May 1, 2026 | Apr 27, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Apr 30, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Apr 29, 2026 | — |
| 424B2 | Prospectus | Apr 28, 2026 | — |
| FWP | Free writing prospectus | Apr 27, 2026 | — |
| 424B2 | Prospectus | Apr 27, 2026 | — |
| 4 | Insider transaction | Apr 24, 2026 | Apr 20, 2026 |
| 4 | Insider transaction | Apr 24, 2026 | Apr 20, 2026 |
| 4 | Insider transaction | Apr 24, 2026 | Apr 20, 2026 |
| 4 | Insider transaction | Apr 24, 2026 | Apr 20, 2026 |
| 4 | Insider transaction | Apr 24, 2026 | Apr 20, 2026 |
| 4 | Insider transaction | Apr 24, 2026 | Apr 20, 2026 |
| 4 | Insider transaction | Apr 24, 2026 | Apr 20, 2026 |
| 10-Q | Quarterly report | Apr 22, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations
|
Apr 21, 2026 | Apr 21, 2026 |
| DEFA14A | Additional proxy material | Apr 6, 2026 | — |
| DEF 14A | Proxy statement | Apr 6, 2026 | May 20, 2026 |
| 4 | Insider transaction | Apr 2, 2026 | Apr 1, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Mar 27, 2026 | — |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Mar 12, 2026 | Mar 9, 2026 |
| 4 | Insider transaction | Mar 11, 2026 | Mar 9, 2026 |
| 3 | Initial insider ownership | Mar 11, 2026 | Mar 9, 2026 |
| 4 | Insider transaction | Mar 6, 2026 | Mar 4, 2026 |
| 4 | Insider transaction | Mar 6, 2026 | Mar 4, 2026 |
| 4 | Insider transaction | Mar 6, 2026 | Mar 4, 2026 |
| 4 | Insider transaction | Mar 6, 2026 | Mar 4, 2026 |
| 4 | Insider transaction | Mar 6, 2026 | Mar 4, 2026 |
| 4 | Insider transaction | Mar 6, 2026 | Mar 4, 2026 |
| 4 | Insider transaction | Mar 6, 2026 | Mar 4, 2026 |
| 4 | Insider transaction | Mar 6, 2026 | Mar 4, 2026 |
| 144 | Notice of proposed sale | Mar 5, 2026 | — |
| 144 | Notice of proposed sale | Mar 5, 2026 | — |
| 144 | Notice of proposed sale | Mar 5, 2026 | — |
| 4 | Insider transaction | Mar 4, 2026 | Mar 2, 2026 |
| 4 | Insider transaction | Mar 4, 2026 | Mar 2, 2026 |
| 4 | Insider transaction | Mar 4, 2026 | Mar 2, 2026 |
| 4 | Insider transaction | Mar 4, 2026 | Mar 2, 2026 |
| 4 | Insider transaction | Mar 4, 2026 | Mar 2, 2026 |
| 4 | Insider transaction | Mar 4, 2026 | Mar 2, 2026 |
| 4 | Insider transaction | Mar 4, 2026 | Mar 2, 2026 |
| 4 | Insider transaction | Mar 4, 2026 | Mar 2, 2026 |
| 144 | Notice of proposed sale | Mar 3, 2026 | — |
| 144 | Notice of proposed sale | Mar 3, 2026 | — |
| 144 | Notice of proposed sale | Mar 3, 2026 | — |
| 144 | Notice of proposed sale | Mar 2, 2026 | — |
| 10-K | Annual report | Feb 26, 2026 | Dec 31, 2025 |
| 4 | Insider transaction | Feb 20, 2026 | Feb 18, 2026 |
| 4 | Insider transaction | Feb 20, 2026 | Feb 18, 2026 |
| 4 | Insider transaction | Feb 20, 2026 | Feb 18, 2026 |
| 4 | Insider transaction | Feb 20, 2026 | Feb 18, 2026 |
| 4 | Insider transaction | Feb 20, 2026 | Feb 18, 2026 |
| 4 | Insider transaction | Feb 20, 2026 | Feb 18, 2026 |
| 4 | Insider transaction | Feb 20, 2026 | Feb 18, 2026 |
| 4 | Insider transaction | Feb 20, 2026 | Feb 18, 2026 |
| 4 | Insider transaction | Feb 20, 2026 | Jan 28, 2026 |
| 4 | Insider transaction | Feb 20, 2026 | Jan 28, 2026 |
| 4 | Insider transaction | Feb 20, 2026 | Jan 28, 2026 |
| 144 | Notice of proposed sale | Feb 19, 2026 | — |
| 144 | Notice of proposed sale | Feb 19, 2026 | — |
| 144 | Notice of proposed sale | Feb 19, 2026 | — |
| 4 | Insider transaction | Feb 17, 2026 | Feb 13, 2026 |
| 144 | Notice of proposed sale | Feb 13, 2026 | — |
| 4 | Insider transaction | Feb 12, 2026 | Jan 28, 2026 |
| 144 | Notice of proposed sale | Feb 10, 2026 | — |
| 8-K |
Current report
Results of operations, Other events
|
Feb 10, 2026 | Feb 10, 2026 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Jan 12, 2026 | Jan 12, 2026 |
| 4 | Insider transaction | Nov 28, 2025 | Nov 25, 2025 |
| 4 | Insider transaction | Nov 28, 2025 | Nov 25, 2025 |
| 144 | Notice of proposed sale | Nov 25, 2025 | — |
| 144 | Notice of proposed sale | Nov 25, 2025 | — |
| 4 | Insider transaction | Nov 20, 2025 | Nov 18, 2025 |
| 144 | Notice of proposed sale | Nov 18, 2025 | — |
| 4 | Insider transaction | Nov 7, 2025 | Nov 5, 2025 |
| 4 | Insider transaction | Oct 24, 2025 | Oct 21, 2025 |
| 4 | Insider transaction | Oct 24, 2025 | Oct 21, 2025 |
| 4 | Insider transaction | Oct 24, 2025 | Oct 21, 2025 |
| 4 | Insider transaction | Oct 24, 2025 | Oct 22, 2025 |
| 4 | Insider transaction | Oct 24, 2025 | Oct 21, 2025 |
| 4 | Insider transaction | Oct 24, 2025 | Oct 21, 2025 |
| 4 | Insider transaction | Oct 24, 2025 | Oct 21, 2025 |
| 144 | Notice of proposed sale | Oct 22, 2025 | — |
| 8-K |
Current report
Results of operations
|
Oct 21, 2025 | Oct 21, 2025 |
| 10-Q | Quarterly report | Oct 21, 2025 | Sep 30, 2025 |
| 4 | Insider transaction | Oct 3, 2025 | Oct 1, 2025 |
| 4 | Insider transaction | Oct 3, 2025 | Oct 1, 2025 |
| 4 | Insider transaction | Sep 30, 2025 | Sep 26, 2025 |
| 144 | Notice of proposed sale | Sep 26, 2025 | — |
| 4 | Insider transaction | Sep 25, 2025 | Sep 23, 2025 |
| 144 | Notice of proposed sale | Sep 24, 2025 | — |
| 144 | Notice of proposed sale | Sep 23, 2025 | — |
| 4 | Insider transaction | Aug 25, 2025 | Aug 21, 2025 |
| 4 | Insider transaction | Aug 21, 2025 | Aug 19, 2025 |
| 144 | Notice of proposed sale | Aug 21, 2025 | — |
| 4 | Insider transaction | Aug 19, 2025 | Aug 15, 2025 |
| 144 | Notice of proposed sale | Aug 19, 2025 | — |
| 144 | Notice of proposed sale | Aug 15, 2025 | — |
| 4 | Insider transaction | Aug 15, 2025 | Aug 13, 2025 |
| 144 | Notice of proposed sale | Aug 15, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2025 | — |
| 4 | Insider transaction | Aug 8, 2025 | Aug 6, 2025 |
| 144 | Notice of proposed sale | Aug 6, 2025 | — |
| 4 | Insider transaction | Aug 1, 2025 | Jul 30, 2025 |
| 144 | Notice of proposed sale | Jul 31, 2025 | — |
| 144 | Notice of proposed sale | Jul 30, 2025 | — |
| 4 | Insider transaction | Jul 25, 2025 | Jul 21, 2025 |
| 4 | Insider transaction | Jul 25, 2025 | Jul 21, 2025 |
| 4 | Insider transaction | Jul 25, 2025 | Jul 21, 2025 |
| 4 | Insider transaction | Jul 25, 2025 | Jul 21, 2025 |
| 4 | Insider transaction | Jul 25, 2025 | Jul 21, 2025 |
| 4 | Insider transaction | Jul 25, 2025 | Jul 21, 2025 |
| 4 | Insider transaction | Jul 25, 2025 | Jul 21, 2025 |
| 10-Q | Quarterly report | Jul 23, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations
|
Jul 22, 2025 | Jul 22, 2025 |
| 4 | Insider transaction | Jul 17, 2025 | Jul 16, 2025 |
| 4 | Insider transaction | Jul 2, 2025 | Jul 1, 2025 |
| 4 | Insider transaction | Jul 2, 2025 | Jul 1, 2025 |
| 11-K | Employee savings plan report | Jun 20, 2025 | Dec 31, 2024 |
| S-3ASR | Automatic shelf registration | Jun 20, 2025 | — |
| 8-K |
Current report
Shareholder vote results
|
May 22, 2025 | May 15, 2025 |
| 4 | Insider transaction | May 19, 2025 | May 15, 2025 |
| 4 | Insider transaction | May 19, 2025 | May 15, 2025 |
| 4 | Insider transaction | May 19, 2025 | May 15, 2025 |
| 4 | Insider transaction | May 19, 2025 | May 15, 2025 |
| 4 | Insider transaction | May 19, 2025 | May 15, 2025 |
| 4 | Insider transaction | May 19, 2025 | May 15, 2025 |
| 4 | Insider transaction | May 19, 2025 | May 15, 2025 |
| 4 | Insider transaction | May 19, 2025 | May 15, 2025 |
| 4 | Insider transaction | May 19, 2025 | May 15, 2025 |
| 4 | Insider transaction | May 14, 2025 | May 12, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | May 14, 2025 | — |
| 144 | Notice of proposed sale | May 13, 2025 | — |
| 144 | Notice of proposed sale | May 12, 2025 | — |
| 4 | Insider transaction | May 2, 2025 | Apr 21, 2025 |
| 4 | Insider transaction | May 2, 2025 | Apr 21, 2025 |
| 4 | Insider transaction | May 2, 2025 | Apr 21, 2025 |
| 4 | Insider transaction | May 2, 2025 | Apr 21, 2025 |
| 4 | Insider transaction | May 2, 2025 | Apr 21, 2025 |
| 10-Q | Quarterly report | Apr 23, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations
|
Apr 22, 2025 | Apr 22, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Apr 17, 2025 | — |
| DEFA14A | Additional proxy material | Apr 11, 2025 | — |
| 4 | Insider transaction | Apr 4, 2025 | Apr 2, 2025 |
| 4 | Insider transaction | Apr 4, 2025 | Apr 2, 2025 |
| DEFA14A | Additional proxy material | Apr 4, 2025 | — |
| DEF 14A | Proxy statement | Apr 4, 2025 | May 15, 2025 |
| 4 | Insider transaction | Apr 3, 2025 | Apr 1, 2025 |
| 4 | Insider transaction | Apr 3, 2025 | Apr 1, 2025 |
| 144 | Notice of proposed sale | Apr 2, 2025 | — |
| 144 | Notice of proposed sale | Apr 2, 2025 | — |
Showing 200 filings, the most recent 200. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Services-Medical Laboratories (SIC 8071)
- Listed as
- DGX (NYSE)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Secaucus, NJ
- SEC filer status
- Large accelerated filer
- SEC CIK
- 1022079
- Former names
- CORNING CLINICAL LABORATORIES INC (until Mar 19, 1997)
Other Services-Medical Laboratories companies
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- Labcorp Holdings Inc. LH
- Guardant Health, Inc. GH
- Caris Life Sciences, Inc. CAI
- GRAIL, Inc. GRAL
- RadNet, Inc. RDNT
- BillionToOne, Inc. BLLN
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.