Form 4 holding
Director
BillionToOne, Inc.
- Security class
- Class A Common Stock
- Shares / value
- 11,350
- Estimated value
- $895,969
- Report date
- 10 Jun 2026
- Price
- $78.94
- Ownership
- Direct
Thomas S. Bremner
Insider Reports History
- Reporting-owner location
- Chicago, IL
- Latest reporting-owner signature
-
/s/ Thomas P. Lynch, Attorney-in-Fact
Source: Latest parsed Forms 3/4/5 signature
- Transaction source note
- Rows are grouped by transaction date from the original SEC filing. Open the aggregated insider activity page to review issuer-level activity across dates.
Identity
Names, identifiers, and filing context for this profile.
1 identity field
SEC source record
Original filing metadata and source links for verification.
1 source field
Source evidence
Original filing metadata and source links for verification.
1 source field
Reported holdings for Thomas S. Bremner
Form 4 holding
Director
BillionToOne, Inc.
- Security class
- Class A Common Stock
- Shares / value
- 693,143
- Estimated value
- Report date
- 07 Nov 2025
- Price
- Ownership
- Indirect
Form 4 holding
Director
BillionToOne, Inc.
- Security class
- Common Stock
- Shares / value
- 0
- Estimated value
- Report date
- 07 Nov 2025
- Price
- Ownership
- Direct
Form 4 holding
Director
BillionToOne, Inc.
- Security class
- Common Stock
- Shares / value
- 0
- Estimated value
- Report date
- 07 Nov 2025
- Price
- Ownership
- Indirect
Form 4 holding
Director
BillionToOne, Inc.
- Security class
- Series A-1 Convertible Preferred Stock
- Shares / value
- 0
- Estimated value
- Report date
- 07 Nov 2025
- Price
- Ownership
- Indirect
- Underlying class
- Common Stock
- Underlying amount
Form 4 holding
Director
BillionToOne, Inc.
- Security class
- Series C-1 Convertible Preferred Stock
- Shares / value
- 0
- Estimated value
- Report date
- 07 Nov 2025
- Price
- Ownership
- Indirect
- Underlying class
- Common Stock
- Underlying amount
Form 4 holding
Director
BillionToOne, Inc.
- Security class
- Series C Convertible Preferred Stock
- Shares / value
- 0
- Estimated value
- Report date
- 07 Nov 2025
- Price
- Ownership
- Indirect
- Underlying class
- Common Stock
- Underlying amount
Form 4 holding
Director
BillionToOne, Inc.
- Security class
- Series D Convertible Preferred Stock
- Shares / value
- 0
- Estimated value
- Report date
- 07 Nov 2025
- Price
- Ownership
- Indirect
- Underlying class
- Common Stock
- Underlying amount
Insider Reports Filed by Thomas S. Bremner
4
BLLN
BillionToOne, Inc.
- Report period
- 10 Jun 2026
- Transactions
- 1
- Transaction value
- $0
- Accepted by SEC
- 12 Jun 2026, 17:58
- Role
- Director
- Next action
- Open filing details
4
BillionToOne, Inc.
- Report period
- 06 Nov 2025
- Transactions
- 57
- Transaction value
- +$2,499,960
- Accepted by SEC
- 10 Nov 2025, 21:38
- Role
- Director
- Next action
- Open filing details
3
BillionToOne, Inc.
- Report period
- 05 Nov 2025
- Transactions
- 0
- Transaction value
- $0
- Accepted by SEC
- 05 Nov 2025, 21:30
- Role
- Director
- Next action
- Open filing details