Welcome to our dedicated page for CytomX Therapeutics SEC filings (Ticker: CTMX), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
CytomX Therapeutics filings document a Delaware clinical-stage oncology biopharmaceutical company with common stock listed on the Nasdaq Global Select Market under CTMX. Recent 8-K reports furnish quarterly and annual financial results, business updates, clinical-program disclosures for Varseta-M and other PROBODY programs, and clinical safety reporting tied to the company’s development studies.
Its formal records also cover capital structure and financing activity, including a completed public offering of common stock and pre-funded warrants made through a Form S-3 registration framework. Proxy materials describe board elections, auditor ratification, authorized-share amendments, equity incentive plan matters, executive compensation, and stockholder voting procedures.
Biotechnology Value Fund (BVF) and related entities have filed Amendment No. 5 to Schedule 13G for CytomX Therapeutics, Inc. (CTMX). As of the close of business on 9 July 2025, the group collectively holds 5,769,231 common-share equivalents in the form of Tranche 2 warrants that are exercisable at $3.77 per share and expire on 3 July 2026. The warrants include a 9.99 % beneficial-ownership blocker that limits exercise to keep the holder’s ownership below that threshold.
Beneficial ownership is reported on a disaggregated basis: BVF (3.07 M shares; 1.9 %), BVF II (2.35 M; 1.5 %), and Biotechnology Value Trading Fund OS (0.27 M; <1 %). Through control relationships, BVF GP Holdings and BVF Partners L.P. may be deemed to beneficially own 3.3 % and 3.5 % of outstanding shares, respectively. All entities disclaim ultimate beneficial ownership beyond their respective capacities.
The percentages are calculated against a base of 157.54 M common shares outstanding following the issuer’s May 2025 equity offering, plus the warrants counted as if exercised. No holder exceeds the 5 % reporting threshold individually, and the filing is made on Schedule 13G to reflect passive investment intent; the certification confirms the securities were not acquired to influence control of CTMX.
Key takeaways for investors
- BVF remains a notable but non-controlling holder with a ~3.5 % aggregate economic interest.
- Exposure is entirely via $3.77 warrants, providing potential upside without current voting power.
- The 9.99 % blocker limits near-term ownership expansion but allows full exercise should total shares outstanding rise.
- The amendment updates ownership levels following the issuer’s recent public offering and does not signal activism.