Leone D. Patterson - 06 Jan 2026 Form 4 Insider Report for Zymeworks Inc. (ZYME)

Reporting relationship: EVP, Chief Bus & Fin Officer
Issuer ticker: ZYME
Reported as of: 06 Jan 2026
Net transaction value: +$4,842
SEC form: 4
Accepted by SEC: 07 Jan 2026, 19:37:56 UTC
Prior SEC filing: 09 Jun 2025
Next SEC filing: 04 Jun 2026
Source filing: View source filing
Reporting owner signature: /s/ Daniel Dex, Attorney-in-Fact

Key filing fact

Leone D. Patterson filed Form 4 for Zymeworks Inc. (ZYME) on 07 Jan 2026.

Key facts

This page summarizes Leone D. Patterson's Form 4 filing for Zymeworks Inc. (ZYME).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 07 Jan 2026, 19:37.

Change

Previous filing in this sequence was filed on 09 Jun 2025.
Current net transaction value: +$4,842.

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 0001233539 Primary reporting owner

PATTERSON LEONE D

Relationship: EVP, Chief Bus & Fin Officer
Address: C/O ZYMEWORKS INC., 108 PATRIOT DRIVE, SUITE A, MIDDLETOWN
Signature: /s/ Daniel Dex, Attorney-in-Fact
Signature date: 07 Jan 2026

Reported non-derivative transactions

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

ZYME transaction

Common Stock

Award

Transaction value: $4,842
Shares: +459
Change %
Price: $10.55
Shares after: 459
Date: 06 Jan 2026
Ownership: Direct
Footnotes: F1

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

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 1 footnote

Footnote F1

Shares of common stock purchased pursuant to the Issuer's Amended and Restated Employee Stock Purchase Plan (ESPP) for the ESPP purchase period July 1, 2025 through December 31, 2025. In accordance with the ESPP, the shares of common stock were purchased at a price equal to 85% of the closing price of the Issuer's common stock on July 1, 2025.