Zymeworks (ZYME)Perceptive Advisors LLC added to its stake +673K shares

4.18M

Shares reported · +673K vs prior quarter

1.6%

Disclosed portfolio weight

$109M

Reported value

Holdings as of

Jun 30, 2026

Filed

Aug 14, 2026

The story around this disclosure

Every dated public record OQRO holds about the company from 60 days before to 120 days after, oldest first. It shows what was going on; none of it is a stated reason for the trade.

1. Jun 28, 2026Company filing · Form 8-K · Material agreement, Reg FDSigned an important agreement, and shared information with investors
2. Aug 6, 2026Company filing · Form 8-K · Results, Reg FDReported its results, and shared information with investors

What came next

1. Sep 23, 2026Company filing · Form 8-K · Material agreement, Acquisition or saleCompleted buying or selling a business or assets, and signed an important agreement (and 2 more items)“On September 23, 2026, Zymeworks issued a press release announcing the closing of the Merger. A copy of the press release is attached hereto as Exhibit 99.1 and is incorporated herein by reference.”
2. Oct 9, 2026InsiderOfficer sold ~$358K of ZYME shares in the open market

How to read SEC Form 13F-HR

Form 13F is the quarterly report in which investment managers that oversee $100 million or more list the US-listed stocks and some other securities they held on the last day of the quarter.

Full guide: What is an SEC Form 13F?

What else is on file for Zymeworks

For Zymeworks, OQRO holds 2 insider filings (SEC Form 4 or Form 144) and 1 fund holdings report (13F) dated in the last 90 days.

These are records OQRO holds, counted by their date, not a measure of how much trading took place. Routine paperwork such as option exercises and tax withholding is left out. Everything for the company is on its ZYME page.

How this filing works

• SEC Form 13F

Other disclosures at Zymeworks

• SEC Form 144Oct 9, 2026
• SEC Form 4Oct 9, 2026
• SEC Form 13F-HRMay 29, 2026
• SEC Form 13F-HRMay 15, 2026
• SEC Form 13F-HRMay 14, 2026
• SEC Form 13F-HRFeb 17, 2026

Everything OQRO holds on this company is on its ZYME page.