SEC Form 4 · accession 0001193125-26-271453
Boundless Bio, Inc. · BOLD
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Jennifer Lew
Director
Period of report
Jun 15, 2026
Accepted (ET)
Jun 15, 2026 · 7:28 pm EDT
Rule 10b5-1 plan
box not checked
Issuer CIK
0001782303
Table I — non-derivative securities
No Table I lines on this filing.
Table II — derivative securities
| Security | Conv. / exercise price | Date | Code | Shares | A/D | Exercisable | Expires | Underlying | Underlying shares | Owned after | D/I |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Stock Option (right to buy)F1 | $1.40 | Jun 15, 2026 | A | 32,000 | A | — | Jun 14, 2036 | Common Stock | 32,000 | 32,000 | D |
Explanation of responses
- F1The 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.