STOCK TITAN

Director Jonathan Lim gets 48,000 Boundless Bio (BOLD) options at $1.40 strike

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Boundless Bio director Jonathan E. Lim received a grant of stock options for 48,000 shares of common stock. The options have an exercise price of $1.40 per share and expire on June 14, 2036.

The option grant vests in substantially equal monthly installments over the 12 months following June 15, 2026, or earlier in full on the date of the next annual stockholder meeting if that meeting occurs before June 15, 2027. Vesting is conditioned on Lim’s continued service on the board of directors.

Positive

  • None.

Negative

  • None.
Insider Lim Jonathan E
Role null
Type Security Shares Price Value
Grant/Award Stock Option (right to buy) 48,000 $0.00 --
Holdings After Transaction: Stock Option (right to buy) — 48,000 shares (Direct, null)
Footnotes (1)
  1. [object Object]
Option grant size 48,000 options Stock Option (right to buy) granted to director Jonathan E. Lim
Exercise price $1.40 per share Conversion or exercise price of the stock options
Expiration date June 14, 2036 Option term for the 48,000-share grant
Shares underlying options 48,000 shares Underlying Boundless Bio common stock
Shares following transaction 48,000 derivative shares Total options held after this grant in this filing
Stock Option (right to buy) financial
"security_title: Stock Option (right to buy)"
exercise price financial
"conversion_or_exercise_price: 1.4000"
The exercise price is the fixed amount at which you can buy or sell an asset, like a stock, when using an options contract. It matters because it helps determine whether exercising the option will be profitable or not, depending on the current market price. Think of it as the set price you agree on today to buy or sell later.
vesting financial
"The stock option shall vest in substantially equal monthly installments"
Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.
annual meeting financial
"in the event the next annual meeting of the issuer's stockholders occurs"
A company's annual meeting is a yearly gathering where owners (shareholders) and the board review performance, ask questions, and vote on key matters like electing directors, approving auditor choices, and sometimes setting pay or dividend policies. For investors it matters because decisions made and votes cast can change who runs the company, influence strategy and payouts, and affect the value or direction of their investment—similar to a homeowners’ meeting where rules and leaders that shape your property’s value are decided.
board of directors financial
"subject to the reporting person's continuing service on the issuer's board of directors"
The Board of Directors is a group of people chosen by a company's owners to help make big decisions and oversee how the company is run. They act like a team of advisors or managers, making sure the company stays on track and meets its goals. Their choices can influence the company's success and how it grows.
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SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Lim Jonathan E

(Last)(First)(Middle)
C/O BOUNDLESS BIO, INC.
11099 NORTH TORREY PINES RD., STE 150

(Street)
LA JOLLA CALIFORNIA 92037

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
Boundless Bio, Inc. [ BOLD ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirector10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
06/15/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Stock Option (right to buy)$1.406/15/2026A48,000 (1)06/14/2036Common Stock48,000$048,000D
Explanation of Responses:
1. 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.
/s/ Jessica Oien, Attorney-in-Fact for Jonathan E. Lim06/15/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)