Key facts
- This page summarizes Yishan Li's Form 4 filing for BlossomHill Therapeutics, Inc. (BLSM).
- 7 reported transactions and 4 derivative rows are listed below.
- Accepted by SEC: 10 Aug 2026, 18:23.
Yishan Li - 06 Aug 2026 Form 4 Insider Report for BlossomHill Therapeutics, Inc. (BLSM)
- Reporting relationship
- Executive Chairman, Director, 10%+ Owner
- Issuer ticker
- BLSM
- Reported as of
- 06 Aug 2026
- Net transaction value
- $0
- Reporting owner signature
- /s/ Vincent Liptak, Attorney-in-Fact
Source evidence
Original filing metadata and source links for verification.
3 source fields
Reporting owner
1 detail
Key filing fact
Yishan Li filed Form 4 for BlossomHill Therapeutics, Inc. (BLSM) on 10 Aug 2026.
Change
- No earlier filing in this sequence is available for direct comparison.
- 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
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (1)
CIK 0001772233
Primary reporting owner
Li Yishan
- Relationship
- Executive Chairman, Director, 10%+ Owner
- Address
- C/O BLOSSOMHILL THERAPEUTICS, INC., 10255 SCIENCE CENTER DRIVE, SUITE 200, SAN DIEGO
- Signature
- /s/ Vincent Liptak, Attorney-in-Fact
- Signature date
- 10 Aug 2026
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
BLSM
transaction
Common Stock
Conversion of derivative security
- Transaction value
- Shares
- +1,600,682
- Change %
- Price
- Shares after
- 1,600,682
- Date
- 10 Aug 2026
- Ownership
- By The Li and Cui Family Trust
- Footnotes
- F1, F2
BLSM
transaction
Common Stock
Conversion of derivative security
- Transaction value
- Shares
- +113,435
- Change %
- +7.1%
- Price
- Shares after
- 1,714,117
- Date
- 10 Aug 2026
- Ownership
- By The Li and Cui Family Trust
- Footnotes
- F1, F2
BLSM
transaction
Common Stock
Conversion of derivative security
- Transaction value
- Shares
- +124,779
- Change %
- Price
- Shares after
- 124,779
- Date
- 10 Aug 2026
- Ownership
- By RongShan, LLC
- Footnotes
- F1, F3
BLSM
holding
Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 1,067,121
- Date
- 06 Aug 2026
- Ownership
- Direct
BLSM
holding
Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 1,067,121
- Date
- 06 Aug 2026
- Ownership
- By Spouse
Reported derivative securities
Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.
BLSM
transaction
Derivative
Employee Stock Option (Right to Buy)
Award
- Transaction value
- Shares
- +112,701
- Change %
- Price
- $0.000000*
- Shares after
- 112,701
- Date
- 06 Aug 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 112,701
- Exercise price
- $16.00
- Footnotes
- F4
BLSM
transaction
Derivative
Series Angel Preferred Stock
Conversion of derivative security
- Transaction value
- Shares
- -1,600,682
- Change %
- -100%
- Price
- Shares after
- 0
- Date
- 10 Aug 2026
- Ownership
- By The Li and Cui Family Trust
- Underlying class
- Common Stock
- Underlying amount
- 1,600,682
- Exercise price
- Footnotes
- F1, F2
BLSM
transaction
Derivative
Series B Preferred Stock
Conversion of derivative security
- Transaction value
- Shares
- -113,435
- Change %
- -100%
- Price
- Shares after
- 0
- Date
- 10 Aug 2026
- Ownership
- By The Li and Cui Family Trust
- Underlying class
- Common Stock
- Underlying amount
- 113,435
- Exercise price
- Footnotes
- F1, F2
BLSM
transaction
Derivative
Series B Preferred Stock
Conversion of derivative security
- Transaction value
- Shares
- -124,779
- Change %
- -100%
- Price
- Shares after
- 0
- Date
- 10 Aug 2026
- Ownership
- By RongShan, LLC
- Underlying class
- Common Stock
- Underlying amount
- 124,779
- Exercise price
- Footnotes
- F1, F3
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Explanation of responses 4 footnotes
Footnote F1
Each share of Series Angel Preferred Stock and Series B Preferred Stock (together, the "Preferred Stock") automatically converted into 1 share of Common Stock upon the closing of the Issuer's initial public offering without payment of further consideration. The Preferred Stock had no expiration date.
Footnote F2
The shares are held in trust for the benefit of the Reporting Person and his spouse. The Reporting Person and his spouse are trustees of The Li and Cui Family Trust (the "Trust") and have voting and dispositive power over the securities held by the Trust.
Footnote F3
The Reporting Person is manager of RongShan, LLC and may be deemed to have voting and dispositive power over the securities held by RongShan.LLC. The Reporting Person disclaims beneficial ownership of these securities, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of the securities for purposes of Section 16 or for any other purpose.
Footnote F4
1/4th of the shares subject to the option shall vest on August 6, 2027, and the balance of the shares shall vest in equal monthly installments over the following 36 months.