SC 13G: Boundless Bio, Inc.

AI Summary

SC 13G filing by Boundless Bio, Inc..

Risk Assessment

Risk Level: low

FAQ

Key Financial Figures

• $0.0001 — Inc. (Name of Issuer) Common stock, $0.0001 par value per share (Title of Class o

Filing Documents

• tm2411733d1_sc13d.htm (SC 13G) — 110KB
• 0001104659-24-046767.txt ( ) — 111KB

From the Filing

SC 13G 1 tm2411733d1_sc13d.htm SC 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. )* Boundless Bio, Inc. (Name of Issuer) Common stock, $0.0001 par value per share (Title of Class of Securities) 10170A100 (CUSIP Number) April 2, 2024 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedule is filed: Rule 13d-1(b) Rule 13d-1(c) Rule 13d-1(d) *The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page. The information required in the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes). CUSIP No. 10170A100 1. Names of Reporting Persons Nextech VI Oncology SCSp 2. Check the Appropriate Box if a Member of a Group (See Instructions) (a) (b) (1) 3. SEC Use Only 4. Citizenship or Place of Organization Luxembourg Number of Shares Beneficially Owned by Each Reporting Person With 5. Sole Voting Power 1,228,069 shares 6. Shared Voting Power 0 7. Sole Dispositive Power 1,228,069 shares 8. Shared Dispositive Power 0 9. Aggregate Amount Beneficially Owned by Each Reporting Person 1,228,069 shares 10. Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) 11. Percent of Class Represented by Amount in Row (9) 5.5% (2) 12. Type of Reporting Person (See Instructions) PN (1) This Schedule 13G is filed by Nextech VI Oncology SCSp (“Nextech VI LP”), Nextech VI GP S.à. r.l. (“Nextech VI GP”), Ian Charoub, (“Charoub”), Costas Constantinides (“Constantinides”) and Rocco Sgobbo (“Sgobbo” and, with Nextech VI LP, Nextech VI GP, Charoub and Constantinides, collectively, the “Reporting Persons”). The Reporting Persons expressly disclaim status as a “group” for purposes of this Schedule 13G. (2) This percentage is calculated based on 22,239,333 shares of Common Stock outstanding as of April 2, 2024 upon the closing of the Issuer’s initial public offering, as reported in the prospectus dated March 27, 2024 filed by the Issuer with the Securities and Exchange Commission (the “SEC”) on March 28, 2024. 2 CUSIP No. 10170A100 1. Names of Reporting Persons Nextech VI GP S.à. r.l. 2. Check the Appropriate Box if a Member of a Group (See Instructions) (a) (b) (1) 3. SEC Use Only 4. Citizenship or Place of Organization Luxembourg Number of Shares Beneficially Owned by Each Reporting Person With 5. Sole Voting Power 1,228,069 shares 6. Shared Voting Power 0 7. Sole Dispositive Power 1,228,069 shares 8. Shared Dispositive Power 0 9. Aggregate Amount Beneficially Owned by Each Reporting Person 1,228,069 shares 10. Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) 11. Percent of Class Represented by Amount in Row (9) 5.5% (2) 12. Type of Reporting Person (See Instructions) OO (1) This Schedule 13G is filed by the Reporting Persons. The Reporting Persons expressly disclaim status as a “group” for purposes of this Schedule 13G. (2) This percentage is calculated based on 22,239,333 shares of Common Stock outstanding as of April 2, 2024 upon the closing of the Issuer’s initial public offering, as reported in the prospectus dated March 27, 2024 filed by the Issuer with the SEC on March 28, 2024. 3 CUSIP No. 10170A100 1. Names of Reporting Persons Ian Charoub 2. Check the Appropriate Box if a Member of a Group (See Instructions) (a) (b) (1) 3. SEC Use Only 4. Citizenship or Place of Organization Sweden Number of Shares Beneficially Owned by Each Reporting Person With 5. Sole Voting Power 0 6. Shared Voting Power 1,228,069 shares 7. Sole Dispositive Power 0 8. Shared Dispositive Power 1,228,069 shares 9. Aggregate Amount Beneficially Owned by Each Reporting Person 1,228,069 shares 10. Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) ¨ 11. Percent of Class Represented by Amount in Row (9) 5.5% (2) 12. Type of Reporting Person (See Instructions) IN (1) This Schedule 13G is filed by the Reporting Persons. The Reporting Persons expressly disclaim status as a “group” for purposes of this Schedule 13G. (2) This percentage is calculated based on 22,239,333 shares of Common Stock outstanding as of April

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