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Boundless Bio, Inc.

For the period ended Mar 31, 2026. Filed May 8, 2026.

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About this filing

A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Mar 31, 2026 · Filed May 8, 2026

BOLD$2.460.0%Stored close · as of Nov 9, 2026

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Item 6. Exhibits

Exhibit · Incorporated by Reference · Filed
NumberDescriptionFormDateNumberHerewith
3.1Amended and Restated Certificate of Incorporation8-K4/2/20243.1
3.2Amended and Restated Bylaws8-K4/2/20243.2
10.1#Non-Employee Director Compensation Program (as amended and restated effective March 6, 2026)X
10.2Agreement for Termination of Lease and Voluntary Surrender of Premises, dated April 13, 2026, between ARE-10933 North Torrey Pines, LLC and Boundless Bio, Inc.X
31.1Certification of Principal Executive Officer Pursuant to Rules 13a-14(a) and 15d-14(a) under the Securities Exchange Act of 1934, as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.X
31.2Certification of Principal Financial Officer Pursuant to Rules 13a-14(a) and 15d-14(a) under the Securities Exchange Act of 1934, as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.X
32.1*Certifications of Principal Executive Officer and Principal Financial Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.X
101.INSInline XBRL Instance Document – the instance document does not appear in the Interactive Data File because XBRL tags are embedded within the Inline XBRL document.X
101.SCHInline XBRL Taxonomy Extension Schema With Embedded Linkbase DocumentsX
104Cover Page Interactive Data File (embedded within the Inline XBRL document)X
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The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.