TSAO DAVID

PrivateCIK: 2087127
Location

MENLO PARK, CA

Senior insider sale

Chief Technology Officer at BILLIONTOONE, INC. — senior position signals high conviction

$9.64M

90.50K shares

What this filing means

TSAO DAVID plans to sell 90.50K shares of BILLIONTOONE, INC. valued at approximately $9.64M. Form 144 is a notice of intent to sell restricted or control securities — not a mandatory transaction. This filing provides advance warning of potential selling pressure.

InsiderTSAO DAVIDCIK 2087127
IssuerBILLIONTOONE, INC.CIK 2070849
DirectorOfficer· Chief Technology Officer
Since Nov 2025
90.50K
Shares to sell
$9.64M
Approx. market value
20K
Acquired (3 months)
1
Planned
7 completed
Securities Acquired — Last 3 Months1
Sort

Stock Option Exercise

Cash

9/9/2026
20K
Total acquired20K
Planned & Completed Dispositions8
Sort

Completed

Completed

Units to sell

10K

Market value

$1.00M

8/25/2026
Completed

Units to sell

3.50K

Market value

$325.0K

8/10/2026
Completed

Units to sell

10K

Market value

$928.6K

8/10/2026
Completed

Units to sell

20K

Market value

$2.50M

7/13/2026
Completed

Units to sell

3.50K

Market value

$439.1K

7/13/2026
Completed

Units to sell

20K

Market value

$2.05M

6/15/2026
Completed

Units to sell

3.50K

Market value

$355.1K

6/15/2026

Planned — Approximate Date

NASDAQPlanned

Units to sell

20K

Market value

$2.05M

9/9/2026
Total

Units

90.50K

Value

$9.64M

TSAO DAVID — Planned Insider Sale (Form 144) | Finecho