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CYTOMX THERAPEUTICS INC. (CTMX)

Institutional ownership, SEC filings and insider activity

Sector: Healthcare & Pharma · SEC CIK 0001501989 · EDGAR filings · Updated 2026-07-27

CYTOMX THERAPEUTICS INC. (CTMX) has reported institutional ownership of 88.7%, with 179 institutional managers holding positions valued at $907.9M per the latest 13F reporting period. SEC filings include an active non-reliance notice on previously issued financial statements (8-K Item 4.02), notice of delisting or failure to satisfy a continued listing rule (8-K Item 3.01), substantial-doubt (going concern) disclosure per the filings.

Institutional ownership
88.7%
Institutional managers
179
Reported 13F value
$907.9M
Insider activity
17 trans.
−$1.91M net selling
Data flags
3 active
from SEC filings

Filings this week (2)

Every filing links to the official SEC document. Real-time filing alerts for this company are available inside the app.

Latest updates

Institutional ownership overview

According to SEC 13F filings tracked by Sightfile, CYTOMX THERAPEUTICS INC. has 179 institutional holders and institutional ownership of 88.7%.

Insider activity

Insiders reported 17 transactions (0 buys, 9 sells) across 5 reporting insiders, with a net reported value of −$1.91M.

Data flags from SEC filings

Active substantial-doubt (going concern) disclosure per the filings, most recently filed 2025-05-12 (recurring since 2025-05-12) — source filing. The authoritative details are those stated in the filing itself.
Active notice of delisting or failure to satisfy a continued listing rule (8-K Item 3.01), most recently filed 2025-02-26 (recurring since 2025-02-26) — source filing. The authoritative details are those stated in the filing itself.
Active non-reliance notice on previously issued financial statements (8-K Item 4.02), most recently filed 2023-02-24 (recurring since 2023-02-24) — source filing. The authoritative details are those stated in the filing itself.

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Sightfile provides information only — not investment advice, recommendations, or an assessment of any security. Data is derived from official public sources (SEC EDGAR and U.S. government agencies), may contain errors or delays, and should be verified against the source filing before relying on it.
Data sources: SEC EDGAR (filings, 13F, FTD), aggregated by Sightfile. Page updated 2026-07-27.