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Bos Jasper

Disclosed activity across 3 companies

Tapewire entity
25488
SEC CIK
0001897789

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
Braveheart Bio, Inc.BRVE · Entity 4564DirectorAugust 05, 2026August 07, 2026
Forbion European Acquisition Corp.FRBNU · Entity 108709Chief Executive OfficerDecember 09, 2021December 09, 2021
enGene Therapeutics Inc.ENGN · Entity 6638DirectorJune 16, 2025June 16, 2025

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.

Braveheart Bio, Inc.

Report date August 05, 2026 · Filed August 07, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Stock Option (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $18.00 · Expires 2036-08-04Direct30,000 Reported balance After 2026-08-05 transaction · row 1 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 1 · 2026-08-05 · Grant · Acquired 30,000 · Balance 30,000

F1: The shares underlying the stock option will vest in full upon the earlier of (i) August 5, 2027 or (ii) the date of the Issuer's next annual meeting of stockholders, subject to the Reporting Person's continued service to the Issuer through such vesting date.

Filing footnotes · ownership attribution and instrument terms

F1: The shares underlying the stock option will vest in full upon the earlier of (i) August 5, 2027 or (ii) the date of the Issuer's next annual meeting of stockholders, subject to the Reporting Person's continued service to the Issuer through such vesting date.

Forbion European Acquisition Corp.

Report date December 09, 2021 · Filed December 09, 2021

This filing explicitly reported no securities owned.

enGene Therapeutics Inc.

Report date June 16, 2025 · Filed June 16, 2025

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Stock Option (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $3.31 · Expires 2035-06-16Direct22,500 Reported balance After 2025-06-16 transaction · row 1 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 1 · 2025-06-16 · Grant · Acquired 22,500 · Balance 22,500

F1: This option fully vests on the earlier of (i) the first anniversary of the date vesting commenced, which was June 10, 2025; or (ii) the 2026 Annual Meeting of Shareholders.

Filing footnotes · ownership attribution and instrument terms

F1: This option fully vests on the earlier of (i) the first anniversary of the date vesting commenced, which was June 10, 2025; or (ii) the 2026 Annual Meeting of Shareholders.

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
August 05, 2026 Filed Aug 7, 2026 20:30 UTC Braveheart Bio, Inc. BRVE · Entity 4564 GrantStock Option (Right to Buy) · Derivative 30,000 $0.00 Strike: $18.00 $0.00
Disclosure

SEC source: 0001470831-26-000797 · wk-form4_1786134641.xml · derivative · entry 1

Bos Jasper · CIK 0001897789 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 30,000

Underlying: Common Stock · 30,000 shares

Expires 2036-08-04

F1 · derivative.exercise_date: The shares underlying the stock option will vest in full upon the earlier of (i) August 5, 2027 or (ii) the date of the Issuer's next annual meeting of stockholders, subject to the Reporting Person's continued service to the Issuer through such vesting date.

Read SEC document
June 16, 2025 Filed Jun 16, 2025 22:36 UTC enGene Therapeutics Inc. ENGN · Entity 6638 GrantStock Option (Right to Buy) · Derivative 22,500 $0.00 Strike: $3.31 $0.00
Disclosure

SEC source: 0000929638-25-002247 · form4.xml · derivative · entry 1

Bos Jasper · CIK 0001897789 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 22,500

Underlying: Common Shares · 22,500 shares

Expires 2035-06-16

F1 · derivative.exercise_date: This option fully vests on the earlier of (i) the first anniversary of the date vesting commenced, which was June 10, 2025; or (ii) the 2026 Annual Meeting of Shareholders.

Read SEC document
June 15, 2024 Filed Jun 18, 2024 20:05 UTC enGene Therapeutics Inc. ENGN · Entity 6638 GrantStock Option (Right to Buy) · Derivative 20,000 $0.00 Strike: $9.00 $0.00
Disclosure

SEC source: 0000929638-24-002213 · form4.xml · derivative · entry 1

Bos Jasper · CIK 0001897789 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,000

Underlying: Common Shares · 20,000 shares

Expires 2034-06-15

F1 · derivative.exercise_date: This option fully vests on the earlier of (i) the first anniversary of the date vesting commenced, which was May 15, 2024; or (ii) the 2025 Annual Meeting of Shareholders.

Read SEC document

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