CytomX Therapeutics ($CTMX) Insider Trading & Smart Money Activity

CytomX Therapeutics, Inc. · Biotechnology · Latest filing May 15, 2026

CytomX Therapeutics, Inc. ($CTMX) has 1 13F position change on file.

Insider buyers (12 mo): 0
Insider sellers (12 mo): 0
Net insider $ (12 mo): $0
Congress trades (12 mo): 0
13F moves on file: 1
Analyst ratings on file: 0

CTMX insider buying and selling by quarter

Quarter	Congress buys / sales	13F added / cut
Q1 2026	0 / 0	0 / 0
Q2 2026	0 / 0	1 / 0
Q3 2026	0 / 0	0 / 0
Q4 2026	0 / 0	0 / 0

Insider buys and sales count open-market trades only (Form 4 codes P and S). Grants, option exercises and tax withholding are left out.

All CTMX insider, congress, 13F and analyst activity

Date	Source	Who	Action	Shares	Value / amount	ΔOwn	1W	1M	6M	Filing	Story
May 15, 2026	13F	Baker Bros. Advisors	Added	+725K sh	$18.66M						—

1W / 1M / 6M = how CTMX moved from the trade or filing date.

Institutions moving CTMX (13F)

Baker Bros. Advisors1

Frequently asked questions

Which institutions changed their CTMX positions?

Recent 13F filers moving the stock include Baker Bros. Advisors.

Other biotechnology stocks

All stocks Insider cluster buys Top insider purchases Congress 13F institutions

Data comes from public SEC Form 4 and 13F filings and STOCK Act disclosures. Dates are the trade or filing date reported. This page is for research only and is not investment advice.

Get trade alerts by text