0000950170-24-041842.txt : 20240404 0000950170-24-041842.hdr.sgml : 20240404 20240404163041 ACCESSION NUMBER: 0000950170-24-041842 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20240402 FILED AS OF DATE: 20240404 DATE AS OF CHANGE: 20240404 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: CRANDELL KEITH CENTRAL INDEX KEY: 0001219039 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-41989 FILM NUMBER: 24823523 MAIL ADDRESS: STREET 1: 8755 W. HIGGINS ROAD STREET 2: SUITE 1025 CITY: CHICAGO STATE: IL ZIP: 60631 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: NELSEN ROBERT CENTRAL INDEX KEY: 0001219042 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-41989 FILM NUMBER: 24823521 MAIL ADDRESS: STREET 1: 8755 W. HIGGINS ROAD STREET 2: SUITE 1025 CITY: CHICAGO STATE: IL ZIP: 60631 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: BYBEE CLINTON CENTRAL INDEX KEY: 0001219043 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-41989 FILM NUMBER: 24823522 MAIL ADDRESS: STREET 1: 8755 W. HIGGINS ROAD STREET 2: SUITE 1025 CITY: CHICAGO STATE: IL ZIP: 60631 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: GILLIS STEVEN CENTRAL INDEX KEY: 0001229592 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-41989 FILM NUMBER: 24823520 MAIL ADDRESS: STREET 1: 8755 W. HIGGINS ROAD STREET 2: SUITE 1025 CITY: CHICAGO STATE: IL ZIP: 60631 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: Boundless Bio, Inc. CENTRAL INDEX KEY: 0001782303 STANDARD INDUSTRIAL CLASSIFICATION: PHARMACEUTICAL PREPARATIONS [2834] ORGANIZATION NAME: 03 Life Sciences IRS NUMBER: 830751369 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 9880 CAMPUS POINT DRIVE STREET 2: SUITE 120 CITY: SAN DIEGO STATE: CA ZIP: 92121 BUSINESS PHONE: (858) 766-9912 MAIL ADDRESS: STREET 1: 9880 CAMPUS POINT DRIVE STREET 2: SUITE 120 CITY: SAN DIEGO STATE: CA ZIP: 92121 4 1 ownership.xml 4 X0508 4 2024-04-02 0001782303 Boundless Bio, Inc. BOLD 0001219039 CRANDELL KEITH 8755 WEST HIGGINS ROAD, SUITE 1025 CHICAGO IL 60631 false false true false 0001219043 BYBEE CLINTON 8755 WEST HIGGINS ROAD, SUITE 1025 CHICAGO IL 60631 false false true false 0001219042 NELSEN ROBERT 8755 WEST HIGGINS ROAD, SUITE 1025 CHICAGO IL 60631 false false true false 0001229592 GILLIS STEVEN 8755 WEST HIGGINS ROAD, SUITE 1025 CHICAGO IL 60631 false false true false false Common Stock 2024-04-02 4 C false 589743 A 617092 I See footnotes Common Stock 2024-04-02 4 C false 787545 A 828570 I See footnotes Common Stock 2024-04-02 4 C false 1048433 A 1048433 I See footnotes Common Stock 2024-04-02 4 P false 66667 16.00 A 683759 I See footnotes Common Stock 2024-04-02 4 P false 133333 16.00 A 1181766 I See footnotes Series A Convertible Preferred Stock 2024-04-02 4 C false 424908 D Common Stock 424908 0 I See footnotes Series A Convertible Preferred Stock 2024-04-02 4 C false 586080 D Common Stock 586080 0 I See footnotes Series A Convertible Preferred Stock 2024-04-02 4 C false 454212 D Common Stock 454212 0 I See footnotes Series B Convertible Preferred Stock 2024-04-02 4 C false 227920 D Common Stock 227920 0 I See footnotes Series C Convertible Preferred Stock 2024-04-02 4 C false 164835 D Common Stock 164835 0 I See footnotes Series C Convertible Preferred Stock 2024-04-02 4 C false 201465 D Common Stock 201465 0 I See footnotes Series C Convertible Preferred Stock 2024-04-02 4 C false 366301 D Common Stock 366301 0 I See footnotes Each share of the Issuer's preferred stock is convertible into shares of the Issuer's common stock and has no expiration date. The preferred stock automatically converted into common stock upon the closing of the Issuer's initial public offering. Represents shares held directly by ARCH Venture Fund IX, L.P. (ARCH IX). ARCH Venture Partners IX, L.P. (AVP IX LP) is the sole general partner of ARCH IX. Represents shares held directly by ARCH Venture Fund IX Overage, L.P. (ARCH IX Overage). ARCH Venture Partners IX Overage, L.P. (AVP IX Overage LP) is the sole general partner of ARCH IX Overage. ARCH Venture Partners IX, LLC (AVP IX LLC) is the sole general partner of each of AVP IX LP and AVP IX Overage LP. Keith Crandell, Robert Nelsen and Clinton Bybee are managing directors of AVP IX LLC (the AVP IX MDs). AVP IX LP and AVP IX Overage LP may be deemed to beneficially own the shares held by ARCH IX and ARCH IX Overage, respectively, AVP IX LLC may be deemed to beneficially own the shares held by ARCH IX and ARCH IX Overage, and each of the AVP IX MDs may be deemed to share the power to direct the disposition and vote of the shares held by ARCH IX and ARCH IX Overage. AVP IX LP, AVP IX Overage LP, AVP IX LLC, and the AVP IX MDs each disclaim beneficial ownership except to to the extent of any pecuniary interest therein, if any. Represents shares held directly by ARCH Venture Fund X Overage, L.P. (ARCH X Overage). ARCH Venture Partners X Overage, L.P. (AVP X Overage LP) is the sole general partner of ARCH X Overage. ARCH Venture Partners X, LLC (AVP X LLC) is the sole general partner of AVP X Overage LP. Keith Crandell, Robert Nelsen and Steven Gillis are members of the investment committee of AVP X LLC (the AVP X Committee Members). AVP X Overage LP may be deemed to beneficially own the shares held by ARCH X Overage, AVP X LLC may be deemed to beneficially own the shares held by ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X Overage. AVP X Overage LP, AVP X LLC, and the AVP X Committee Members each disclaim beneficial ownership except to the extent of any pecuniary interest therein, if any. Reflects shares purchased by ARCH IX in the Issuer's initial public offering. Reflects shares purchased by ARCH X Overage in the Issuer's initial public offering. This Form 4 is one of two reports relating to the same transaction being filed jointly by ARCH IX, AVP IX LP, ARCH IX Overage, AVP IX Overage LP, AVP IX LLC, ARCH X Overage, AVP X Overage LP, AVP X LLC, Robert Nelsen, Keith Crandell, Steve Gillis and Clint Bybee (collectively, the "Reporting Persons"). Kristina Burow is filing her own Form 4 separately. /s/ Keith Crandell, By: Mark McDonnell, attorney in-fact 2024-04-04 /s/ Clinton Bybee, By: Mark McDonnell, attorney in-fact 2024-04-04 /s/ Robert Nelsen, By: Mark McDonnell, attorney in-fact 2024-04-04 /s/ Steven Gillis, By: Mark McDonnell, attorney in-fact 2024-04-04