Cytomx Therapeutics (CTMX)Perceptive Advisors LLC added to its stake +419K shares

10.1M

Shares reported · +419K vs prior quarter

0.93%

Disclosed portfolio weight

$47.5M

Reported value

Holdings as of

Mar 31, 2026

Filed

May 29, 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. May 7, 2026Company filing · Form 8-K · ResultsReported its results
2. May 29, 2026Company filing · Form 8-K · Material agreementSigned an important agreement

What came next

1. Jun 17, 2026Company filing · Form 8-K · Executive change, Bylaws or charterChanged a top executive or board member, and changed its bylaws, charter or fiscal year (and 1 more item)“On June 17, 2026, stockholders of CytomX Therapeutics, Inc. (the “Company”) approved at the Company’s 2026 Annual Meeting of Stockholders (the “Annual Meeting”) an amendment (the “2015 Plan Amendment”) to the Company’s Amended and Restated 2015 Equity Incentive Plan (the “2015 Plan”) and an amendment (the “ESPP Amendment”) to the Company’s Amended and Restated Employee Stock Purchase Plan (the “ESPP”).”
2. Jul 24, 2026Company filing · Form 8-K · Executive changeChanged a top executive or board member“On July 24, 2026, Charles Fuchs, M.D., M.P.H., was appointed to the Board of Directors (the “Board”) of CytomX Therapeutics, Inc. (the “Company”), effective immediately, as a Class II director, with an initial term expiring at the Company’s 2029 annual meeting of stockholders.”
3. Aug 6, 2026Company filing · Form 8-K · ResultsReported its results

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 Cytomx Therapeutics

For Cytomx Therapeutics, OQRO holds 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 CTMX page.

How this filing works

• SEC Form 13F

Other disclosures at Cytomx Therapeutics

• SEC Form 13F-HRAug 14, 2026
• SEC Form 13F-HRMay 15, 2026
• SEC Form 13F-HRMay 14, 2026
• SEC Form 13F-HRFeb 17, 2026
• SEC Form 13F-HRNov 14, 2025
• SEC Form 13F-HRAug 14, 2025

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