TSAO DAVID

PrivateCIK: 2087127
Location

MENLO PARK, CA

TSAO DAVID (Chief Technology Officer) reported 2 transactions at BILLIONTOONE, INC.

Review the transaction codes below to understand the nature of each event.

InsiderTSAO DAVIDCIK 2087127
IssuerBILLIONTOONE, INC.CIK 2070849
DirectorOfficer· Chief Technology Officer
Since Nov 2025
-20K
Net shares
Net seller
$0.00
Total acquired
0
Open market trades
0B · 0S
3
Total transactions
20K acquired · 40K disposed
Non-Derivative Transactions2

Class A Common Stock

Direct
C · Conversion

Shares

+20K

Price / share

Trade value

% of position

2000.0%
9/3/2026
1K21K

Class A Common Stock

Direct
G · Gift

Shares

20K

Price / share

Trade value

% of position

95.2%
9/8/2026
21K1K
Total

Net shares

+0.00

Net value

$0.00

Derivative Transactions1

Class B Common Stock

Direct
C · Conversion
Converts to

Class A Common Stock

20K shares

Shares

20K

Strike price

Held after

2.31M

Exercisable

9/3/2026