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person · Reporting owner

Christensen James

Disclosed activity across 1 company

Tapewire entity
38240
SEC CIK
0002016409

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
Boundless Bio, Inc.BOLD · Entity 7063DirectorJune 15, 2026June 15, 2026

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

Boundless Bio, Inc.

Report date June 15, 2026 · Filed June 15, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Stock Option (right to buy)SEC Table II · derivative / convertible security · Conversion / exercise price $1.40 · Expires 2036-06-14Direct32,000 Reported balance After 2026-06-15 transaction · row 1 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 1 · 2026-06-15 · Grant · Acquired 32,000 · Balance 32,000

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.

Filing footnotes · ownership attribution and instrument terms

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.

Transaction history

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
June 15, 2026 Filed Jun 15, 2026 23:31 UTC Boundless Bio, Inc. BOLD · Entity 7063 GrantStock Option (right to buy) · Derivative 32,000 $0.00 Strike: $1.40 $0.00
Disclosure

SEC source: 0001193125-26-271457 · ownership.xml · derivative · entry 1

Christensen James · CIK 0002016409 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,000

Underlying: Common Stock · 32,000 shares

Expires 2036-06-14

F1 · derivative.exercise_date: 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.

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June 23, 2025 Filed Jun 23, 2025 21:16 UTC Boundless Bio, Inc. BOLD · Entity 7063 GrantStock Option (right to buy) · Derivative 16,000 $0.00 Strike: $1.03 $0.00
Disclosure

SEC source: 0000950170-25-089085 · ownership.xml · derivative · entry 1

Christensen James · CIK 0002016409 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,000

Underlying: Common Stock · 16,000 shares

Expires 2035-06-22

F1 · derivative.exercise_date: The stock option shall vest in substantially equal monthly installments over the 12 months following June 23, 2025 (or, in the event the next annual meeting of the issuer's stockholders occurs prior to June 23, 2026, 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.

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March 27, 2024 Filed Mar 29, 2024 20:30 UTC Boundless Bio, Inc. BOLD · Entity 7063 GrantStock Option · Derivative 13,219 $0.00 Strike: $16.00 $0.00
Disclosure

SEC source: 0000950170-24-038701 · ownership.xml · derivative · entry 1

Christensen James · CIK 0002016409 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,219

Underlying: Common Stock · 13,219 shares

Expires 2034-03-26

F1 · derivative.exercise_date: The stock option vests in 36 substantially equal monthly installments beginning on April 27, 2024.

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Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.