TSAO DAVID

PrivateCIK: 2087127
Location

MENLO PARK, CA

Senior insider sale

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

$2.84M

27K shares

What this filing means

TSAO DAVID plans to sell 27K shares of BILLIONTOONE, INC. valued at approximately $2.84M. 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
27K
Shares to sell
$2.84M
Approx. market value
3.50K
Acquired (3 months)
1
Planned
2 completed
Securities Acquired — Last 3 Months1
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Pre IPO Shares

Cash

12/30/2021
3.50K
Total acquired3.50K
Planned & Completed Dispositions3
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Completed

Completed

Units to sell

3.50K

Market value

$355.1K

6/15/2026
Completed

Units to sell

20K

Market value

$2.05M

6/15/2026

Planned — Approximate Date

NASDAQPlanned

Units to sell

3.50K

Market value

$439.1K

7/13/2026
Total

Units

27K

Value

$2.84M