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Boundless Bio (BOLD) investor relations material

Boundless Bio Q3 2025 earnings summary

Complete event summary combining all related documents: earnings call transcript, report, and slide presentation.
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Q3 2025 earnings summary5 Nov, 2025

Executive summary

  • Focused on developing ecDNA-directed therapeutics (ecDTx) for oncogene-amplified cancers, with BBI-355/BBI-825 in Phase 1/2 and BBI-940 in preclinical development; enrollment is ongoing in the BBI-355/BBI-825 combination arm of the POTENTIATE trial.

  • IND submission for BBI-940 is on track, with a first-in-human clinical trial expected in the first half of 2026.

  • Discontinued certain trial arms and streamlined operations, including a workforce reduction, to extend cash runway and prioritize key programs.

  • Cash position of $117.6 million as of September 30, 2025, supports operations into the first half of 2028, covering expected proof-of-concept readouts for both programs.

  • No product revenue to date; expects continued operating losses and need for additional capital before commercialization.

Financial highlights

  • Cash, cash equivalents, and short-term investments totaled $117.6 million as of September 30, 2025.

  • Net loss was $13.9 million for Q3 2025 (vs. $16.5 million Q3 2024) and $45.3 million for the nine months ended September 30, 2025 (vs. $48.9 million prior year period).

  • R&D expenses decreased to $10.7 million in Q3 2025 (from $14.1 million Q3 2024) and $35.0 million for the nine months (from $42.0 million prior year).

  • G&A expenses were $4.5 million in Q3 2025 (vs. $4.6 million Q3 2024) and $14.5 million for the nine months (vs. $13.0 million prior year).

  • Net loss per share was $(0.62) for Q3 2025 and $(2.03) for the nine months ended September 30, 2025.

Outlook and guidance

  • Current cash runway expected to fund operations into the first half of 2028, based on current plans and assumptions.

  • Initial proof-of-concept data for BBI-355/BBI-825 and BBI-940 expected within existing cash runway.

  • IND application for BBI-940 and initiation of Phase 1 trial anticipated in the first half of 2026.

  • Substantial additional funding will be required to complete development and commercialization of ecDTx.

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Frequently asked questions

Boundless Bio Inc., trading under the NASDAQ symbol BOLD, is a clinical-stage oncology company focused on developing novel cancer treatments. The company leverages its proprietary Spyglass platform to target extrachromosomal DNA (ecDNA), which plays a significant role in oncogene amplification in over 14% of cancer patients. By identifying and inhibiting targets essential for ecDNA functionality, Boundless Bio aims to develop ecDNA-directed therapeutic candidates (ecDTx) designed to selectively eliminate cancer cells containing ecDNA without harming healthy cells. The company is headquartered in San Diego, California, and its shares are listed on the NASDAQ.

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