Jonathan P. Siegrist - 15 Oct 2026 Form 4 Insider Report for QuidelOrtho Corp (QDEL)

Reporting relationship: EVP of R&D & CTO
Issuer ticker: QDEL
Reported as of: 15 Oct 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 19 Oct 2026, 17:07:44 UTC
Prior SEC filing: 03 Feb 2026
Source filing: View source filing
Reporting owner signature: /s/ Euna Greene, attorney-in-fact for Jonathan P. Siegrist

Filing notes and source

Key filing fact

Jonathan P. Siegrist filed Form 4 for QuidelOrtho Corp (QDEL) on 19 Oct 2026.

Key facts

This page summarizes Jonathan P. Siegrist's Form 4 filing for QuidelOrtho Corp (QDEL).
3 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 19 Oct 2026, 17:07.

Change

Previous filing in this sequence was filed on 03 Feb 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0002040321 Primary reporting owner

Siegrist Jonathan Philip

Relationship: EVP of R&D & CTO
Address: 9975 SUMMERS RIDGE ROAD, SAN DIEGO
Signature: /s/ Euna Greene, attorney-in-fact for Jonathan P. Siegrist
Signature date: 19 Oct 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

QDEL transaction

Common Stock

Options Exercise

Transaction value
Shares: +18,657
Change %: +139%
Price: $0.000000^*
Shares after: 32,076
Date: 15 Oct 2026
Ownership: Direct
Footnotes: F1

QDEL transaction

Common Stock

Tax liability

Transaction value
Shares: -6,695
Change %: -21%
Price: $13.91^*
Shares after: 25,381
Date: 15 Oct 2026
Ownership: Direct
Footnotes: F2

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

QDEL transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value
Shares: -18,657
Change %: -50%
Price: $0.000000^*
Shares after: 18,657
Date: 15 Oct 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 18,657
Exercise price
Footnotes: F3, F4

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 4 footnotes

Footnote F1

Reflects release of restricted stock units that were previously reported on a Form 3.

Footnote F2

Disposition of shares, as set forth above, was in connection with the Issuer's withholding of common shares to satisfy tax withholding obligations related to the issuance of common shares upon release of restricted stock units.

Footnote F3

Each restricted stock unit represents the right to receive one share of QuidelOrtho Corporation common stock.

Footnote F4

18,656 shares vested on October 15, 2025; 18,657 shares vested on October 15, 2026; and the remaining 18,657 shares will vest on October 15, 2027.