Jonathan E. Lim - 15 Jun 2026 Form 4 Insider Report for Boundless Bio, Inc. (BOLD)

Reporting relationship: Director
Issuer ticker: BOLD
Reported as of: 15 Jun 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 15 Jun 2026, 19:36:07 UTC
Prior SEC filing: 10 Jun 2026
Source filing: View source filing
Reporting owner signature: /s/ Jessica Oien, Attorney-in-Fact for Jonathan E. Lim

Key filing fact

Jonathan E. Lim filed Form 4 for Boundless Bio, Inc. (BOLD) on 15 Jun 2026.

Key facts

This page summarizes Jonathan E. Lim's Form 4 filing for Boundless Bio, Inc. (BOLD).
1 reported transaction and 1 derivative row are listed below.
Accepted by SEC: 15 Jun 2026, 19:36.

Change

Previous filing in this sequence was filed on 10 Jun 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001283290 Primary reporting owner

Lim Jonathan E

Relationship: Director
Address: C/O BOUNDLESS BIO, INC., 11099 NORTH TORREY PINES RD., STE 150, LA JOLLA
Signature: /s/ Jessica Oien, Attorney-in-Fact for Jonathan E. Lim
Signature date: 15 Jun 2026

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

BOLD transaction Derivative

Stock Option (right to buy)

Award

Transaction value
Shares: +48,000
Change %
Price: $0.000000^*
Shares after: 48,000
Date: 15 Jun 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 48,000
Exercise price: $1.40
Footnotes: F1

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 1 footnote

Footnote F1

The stock option shall vest in substantially equal monthly installments over the 12 months following June 15, 2026 (or, in the event the next annual meeting of the issuer's stockholders occurs prior to June 15, 2027, any remaining unvested portion of the stock option will vest on the date of such annual meeting), subject to the reporting person's continuing service on the issuer's board of directors through such vesting date.