Jonathan P. Siegrist - 29 Jan 2026 Form 4 Insider Report for QuidelOrtho Corp (QDEL)

Reporting relationship: EVP of R&D & CTO
Issuer ticker: QDEL
Reported as of: 29 Jan 2026
Net transaction value: -$27,657
SEC form: 4
Accepted by SEC: 02 Feb 2026, 19:07:40 UTC
Prior SEC filing: 17 Oct 2025
Next SEC filing: 03 Feb 2026
Source filing: View source filing
Reporting owner signature: /s/ Jennifer Ahn, attorney-in-fact for Jonathan P. Siegrist

Key filing fact

Jonathan P. Siegrist filed Form 4 for QuidelOrtho Corp (QDEL) on 02 Feb 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: 02 Feb 2026, 19:07.

Change

Previous filing in this sequence was filed on 17 Oct 2025.
Current net transaction value: -$27,657.

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/ Jennifer Ahn, attorney-in-fact for Jonathan P. Siegrist
Signature date: 02 Feb 2026

Reported non-derivative transactions

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

QDEL transaction

Common Stock

Award

Transaction value: $0
Shares: +2,448
Change %: +20%
Price: $0.000000
Shares after: 14,428
Date: 29 Jan 2026
Ownership: Direct
Footnotes: F1

QDEL transaction

Common Stock

Tax liability

Transaction value: $27,657
Shares: -1,009
Change %: -7%
Price: $27.41
Shares after: 13,419
Date: 29 Jan 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: $0
Shares: -2,448
Change %: -33%
Price: $0.000000
Shares after: 4,898
Date: 29 Jan 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 2,448
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 4.

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

2,448 shares vested on January 29, 2026; the remaining 4,898 shares will vest in equal installments on January 29, 2027 and January 29, 2028.