As of November 6, 2026, QuidelOrtho Corp is a publicly traded company (Nasdaq: QDEL); its largest reported holder is Newtyn Management, LLC, with 9.7% on Schedule 13G/A of August 14, 2026, then Fidelity (FMR) (5.8%). The largest insider holding is Kenneth F. Buechler, a director, with 110,906 shares (0.16% of shares outstanding), per Form 4 of June 9, 2026 (Schedule 13G/A, August 14, 2026).
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Is QuidelOrtho Corp a real, registered company?
- QuidelOrtho Corp files with the SEC under CIK 1906324 (its SEC filings).
- Its shares are listed under the ticker QDEL on Nasdaq (SEC company record).
- business address in San Diego, California, as its SEC filings state.
- Court and bankruptcy records: see Before you sign or pay below.
Before you sign or pay
- Court and bankruptcy: No federal court case or bankruptcy filing found under QUIDELORTHO CORP in our court records and SEC 8-K records (as of 2026-11-06).
- Leadership changes: the latest reported is Jonathan Siegrist (Form 8-K filed 2026-11-03). Check you are dealing with the people now in charge.
- Ownership: 5%+ holders are reported on Schedule 13D or 13G; the latest names Fidelity (FMR) (filed 2026-10-07).
Who are QuidelOrtho Corp's owners and officers?
QuidelOrtho Corp: business address in San Diego, California; industry In Vitro & In Vivo Diagnostic Substances (Form D, 2026-11-03).
| Report | Holder | Share |
|---|---|---|
| Schedule 13G/A, 2026-10-07 | Fmr LLC | 5.8% |
| Schedule 13G/A, 2026-08-14 | Newtyn Management, LLC | 9.7% |
| Schedule 13G/A, 2026-08-14 | T. Rowe Price Investment Management, Inc. | 2.6% |
| Schedule 13G, 2026-08-13 | Invesco LTD. | 5.1% |
| Schedule 13G/A, 2026-08-05 | Neuberger Berman Group LLC | 4.9% |
| Schedule 13G, 2026-07-08 | Neuberger Berman Group LLC | 5.2% |
| Schedule 13G/A, 2026-05-07 | Fmr LLC | 11.5% |
| Schedule 13G/A, 2026-05-06 | Fmr LLC | 9.7% |
| Schedule 13G/A, 2026-05-06 | Invesco LTD. | 4.6% |
| Schedule 13G/A, 2026-05-06 | Newtyn Management, LLC | 7.8% |
| Schedule 13G, 2026-05-06 | Newtyn Management, LLC | 6.7% |
| Schedule 13G, 2026-04-30 | Vanguard Capital Management | 5.24% |
Questions about who owns QuidelOrtho Corp
Who owns QuidelOrtho Corp?
On this page, 4 holders' latest ownership filings report 5% or more of QuidelOrtho Corp: Newtyn Management, LLC (9.7%, Schedule 13G/A, filed 2026-08-14), Fmr LLC (5.8%, Schedule 13G/A, filed 2026-10-07), Vanguard Capital Management (5.24%, Schedule 13G, filed 2026-04-30) and Invesco LTD. (5.1%, Schedule 13G, filed 2026-08-13).
Who are the largest shareholders of QuidelOrtho Corp?
By the share each holder's latest filing reports, the largest holders of QuidelOrtho Corp on this page are Newtyn Management, LLC (9.7%), Fmr LLC (5.8%) and Vanguard Capital Management (5.24%).
When did Newtyn Management, LLC buy into QuidelOrtho Corp?
The filings give report dates, not purchase dates. The earliest filing from Newtyn Management, LLC on this page is the Schedule 13G/A, filed 2026-05-06, reporting 7.8%; its latest, Schedule 13G/A filed 2026-08-14, reports 9.7%. That earliest filing is itself an amendment, which updates an earlier report.
Is this an audit or a full list?
Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 12 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.
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| Filed | Person | Role | Change | Effective |
|---|---|---|---|---|
| Form 8-K, 2026-11-03 | Jonathan Siegrist | appointed | 2026-11-09 | |
| Form 8-K, 2026-06-23 | Micah Young | Chief Financial Officer | appointed | 2026-07-06 |
Which insiders own QuidelOrtho Corp shares?
Directors, officers and holders of 10% or more report their shares on Forms 3, 4 and 5. Each line is the latest such report, largest holding first.
- , a director: 110,906 shares (0.16% of shares outstanding) (Form 4, 2026-06-09).
- , a director: 89,379 shares (0.13% of shares outstanding), 34,604 held directly and 54,775 indirectly (Form 4, 2026-06-02).
- , the chief executive and president: 75,722 shares (0.11% of shares outstanding), 35,649 held directly and 40,073 indirectly (Form 4, 2026-05-19).
- , the chief financial officer: 55,108 shares (0.08% of shares outstanding), 44,818 held directly and 10,290 indirectly (Form 4, 2026-03-31).
- , a director: 45,073 shares (0.07% of shares outstanding) (Form 4, 2026-06-09).
Shares outstanding: 68,612,588 as of 2026-10-28, from the company's latest SEC cover page.
How much has QuidelOrtho Corp raised?
No fundraising or offering filing from QuidelOrtho Corp is on file with us.
Keep reading
More on QuidelOrtho Corp and the records around it.
QuidelOrtho Corp elsewhere on the record
- 5%+ stake filings Oct 2026
- Leadership changes Jun 2026
Companies that share a holder
- Newtyn Management, LLC also filed stake reports on 13 other companies: Par Technology Corporation (Aug 2026), Theravance Biopharma, Inc. (Aug 2026), ZOOZ Strategy Ltd. (Aug 2026)
- Rubric Capital Management LP also filed stake reports on 32 other companies: ARDELYX, INC. (Aug 2026), Enovis Corporation (Aug 2026), MeiraGTx Holdings plc (Aug 2026)
- Neuberger Berman Group LLC also filed stake reports on 37 other companies: Stock Yards Bancorp, Inc. (Nov 2026), TRANSCAT INC (Nov 2026), Hagerty Inc CLass A (Oct 2026)
Related pages
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