CytomX Therapeutics, Inc. (CTMX) Institutional Ownership & Insider Trading

179 institutions reported holding CytomX Therapeutics, Inc. shares in 13F filings for the quarter ended 2026-06-30, according to EquiReason's reading of their SEC filings. 6 insider trades on Form 4 since 2025-10-01.

Source: SEC EDGAR filings · figures as of 2026-06-30 · read by EquiReason

CTMXCytomX Therapeutics, Inc.Follow CTMX — free

Biotechnology · Healthcare

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Market cap: 505.5M
P/E TTM: —
Dividend yield: —
52-week: —
Next earnings: 10 Nov, in 17 days

Institutions · all 13F filers

quarter to 30 Jun 2026 · filers in both quarters

179 institutions held 97.9% of the shares. Across filers that reported both quarters, shares held changed +9.9%.

Largest moves, shares (millions)

Institutional flow by quarter

net shares added or trimmed, millions · filers in both quarters

Quarter	Holders	Shares held, M	Change	Increased	New	Decreased	Closed
Jun 26	179	213	+9.9%	67	44	32	42
Mar 26	179	194	+34.8%	59	67	26	16
Dec 25	120	144	+13.3%	37	32	25	17
Sep 25	101	137	+3.5%	27	29	24	11
Jun 25	83	133	+194.2%	26	28	17	12
Mar 25	66	45	-2.1%	18	7	24	10
Dec 24	70	47	-9.6%	24	7	20	10
Sep 24	69	51	+1.3%	16	9	21	12

CytomX Therapeutics, Inc. — questions

Who owns CytomX Therapeutics, Inc. stock?: 179 institutions reported CytomX Therapeutics, Inc. shares in 13F filings for the quarter ended 2026-06-30. The largest: FMR LLC (15.0%), Kynam Capital Management, LP (10.0%), BlackRock, Inc. (8.1%).
Are CytomX Therapeutics, Inc. insiders buying or selling?: 6 insider trades on Form 4 since 2025-10-01; the full list, with dates, people and plan status, is on this page.

Every figure on this page comes from CytomX Therapeutics, Inc.'s own SEC filings — see them on SEC EDGAR. Price data is licensed and shown only inside the product.

How these figures are read: methodology · EquiReason.

Important information. Figures on this page are taken from filings submitted to the U.S. Securities and Exchange Commission (SEC) and processed automatically by EquiReason. They may contain errors, omissions or delays, and EquiReason makes no representation or warranty as to their accuracy, completeness or timeliness. Always verify figures against the original filing on SEC EDGAR before relying on them.

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