Boundless Bio, Inc. — Director's Dealing 2024

Mar 28, 2024

SEC Form 3 — Initial Statement of Beneficial Ownership

Issuer: Boundless Bio, Inc. (BOLD)
CIK: 0001782303
Period of Report: 2024-03-27

Reporting Person: Hornby Zachary (N/A)

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	256410	Direct

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Stock Option	$3.12	2030-06-09	Common Stock (128205)		Direct
Stock Option	$4.10	2031-06-06	Common Stock (256410)		Direct
Stock Option	$4.10	2033-06-12	Common Stock (471282)		Direct
Stock Option	$8.19	2034-02-14	Common Stock (257207)		Direct

Footnotes

F1: The stock option vests in 48 substantially equal monthly installments beginning on July 10, 2020.

F2: The stock option vests in 48 substantially equal monthly installments beginning on July 7, 2021.

F3: The stock option vests in 48 substantially equal monthly installments beginning on July 13, 2023.

F4: The stock option vests in 48 substantially equal monthly installments beginning on March 15, 2024.