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Boundless Bio, Inc.

Los Angeles, California

Oncologysmall moleculePhase IListed · BOLD

This company trades under its own ticker, so it sits outside Biodatica’s pre-ticker window. The record stays here because its filings are real, but the feed leaves listed companies out unless you ask for them.

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What changed

Phase I trial registered: Study of the CHK1 Inhibitor BBI-355, an ecDNA-directed Therapy (ecDTx), and the RNR Inhibitor BBI-825, in Subjects With Tumors With Oncogene Amplifications

6w agoTrial registeredJun 8, 2026Source filing (opens the source filing in a new tab)

Momentum

76no change

Momentum 76 out of 100, unchanged since the last recompute.

Accelerating: several high-weight events landed recently.

Runway (estimate)

—unknown

No disclosed raise on file, so there is nothing to model from.

Stage

Phase I

The furthest-along thing in the public record. Not a projection.

Runway is an estimate: the last disclosed raise (SEC Form D) minus a modeled burn rate for the company’s stage and therapeutic area. It is not a disclosure, and companies routinely raise non-dilutive money we can’t see. How this is calculated.

Grant to raise

Every record Biodatica has resolved onto this company, newest first, each linked to the filing it came from. Where a source publishes no stable deep link for a record, the identifier is shown so you can look it up yourself.

  1. Trial

    PHASE1 registered

    Feb 25, 2026

    Breast Cancer, Metastatic Breast Cancer, Advanced Breast Cancer · RECRUITING · sponsor: Boundless Bio, Inc. · Study of the Kinesin Oral Molecular Degrader BBI-940 in Subjects With Advanced or Metastatic Breast Cancer

    ClinicalTrials.gov · NCT07408089 (opens the source filing in a new tab)

  2. Trial

    PHASE1 registered

    Mar 24, 2023

    Triple Negative Breast Cancer (TNBC), High Grade Serous Ovarian Carcinoma, High Grade Endometrial Carcinoma, Anogenital Cancer, Head and Neck (HNSCC), Cutaneous Squamous Cell Carcinoma (CSCC), Cervical Squamous Cell Carcinoma, ER+ Breast Cancer, Leiomyosarcoma (LMS), Undifferentiated Pleomorphic Sarcoma (UPS), Pancreatic Cancer Metastatic, Small Cell Lung Cancer · TERMINATED · sponsor: Boundless Bio, Inc. · Study of the CHK1 Inhibitor BBI-355, an ecDNA-directed Therapy (ecDTx), and the RNR Inhibitor BBI-825, in Subjects With Tumors With Oncogene Amplifications

    ClinicalTrials.gov · NCT05827614 (opens the source filing in a new tab)

Biodatica publishes impersonal research shown identically to every subscriber. This dossier is informational only, it is not investment advice, and the momentum and runway figures are estimates derived from public filings. The underlying records are U.S. government works. Disclosures · Data sources