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Aptose Biosciences (APTO) investor relations material

Aptose Biosciences Q2 2025 earnings summary

Complete event summary combining all related documents: earnings call transcript, report, and slide presentation.
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Q2 2025 earnings summary13 Aug, 2025

Executive summary

  • Tuspetinib-based triplet therapy in AML showed strong safety and efficacy, with dose escalation ongoing and no dose-limiting toxicities observed; multiple complete responses reported.

  • Luxeptinib development paused to prioritize tuspetinib due to funding constraints.

  • Company remains pre-revenue, focused on clinical development and reliant on external financing, with Hanmi providing a loan facility.

Financial highlights

  • Net loss for Q2 2025 was $7.0M, down from $7.3M in Q2 2024; six-month net loss $12.6M, down from $16.9M year-over-year.

  • Cash, cash equivalents, and restricted cash at $1.3M as of June 30, 2025, down from $6.7M at year-end 2024; company relies on Hanmi advances.

  • Research and development expenses decreased to $3.3M for Q2 2025 from $4.4M in Q2 2024; general and administrative expenses increased to $3.6M from $2.9M.

  • Operating expenses for Q2 2025 were $6.9M, compared to $7.3M in Q2 2024.

  • Negative working capital of $5.7M and shareholders' deficit of $14.4M as of June 30, 2025.

Outlook and guidance

  • Ongoing enrollment in the 160mg dose cohort for the TUSCANY trial; further data updates expected at upcoming conferences.

  • Plans to initiate Phase 2/3 pivotal program and select optimal tuspetinib dose for future trials.

  • Research and development expenses expected to be lower in 2025 unless new financing is secured; general and administrative expenses may increase slightly.

  • Company is exploring strategic alternatives and additional financing options, but faces significant uncertainty due to delisting from Nasdaq and market conditions.

  • Actively pursuing financing and cost reduction to extend cash runway.

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Frequently asked questions

Aptose Biosciences Inc. is a clinical-stage biotechnology company focused on developing targeted therapies for hematologic malignancies, including leukemia, lymphoma, and myeloma. The company leverages innovative approaches in small-molecule drug design to address unmet medical needs in cancer treatment. The company is headquartered in Toronto, Canada, and its shares are listed on the NASDAQ.

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