TSAO DAVID

PrivateCIK: 2087127
Location

MENLO PARK, CA

TSAO DAVID (Chief Technology Officer) purchased 1K shares of BILLIONTOONE, INC. on the open market

Open‑market purchase worth $60.0K. The strongest form of insider conviction signal.

P · 1 purchase
InsiderTSAO DAVIDCIK 2087127
IssuerBILLIONTOONE, INC.CIK 2070849
DirectorOfficer· Chief Technology Officer
Since Nov 2025
+1K
Net shares
Net buyer
$60.0K
Total acquired
1
Open market trades
1B · 0S
9
Total transactions
5.79M acquired · 5.79M disposed
Non-Derivative Transactions4

Common Stock

Direct
J · J

Shares

2.33M

Price / share

Trade value

% of position

New position
11/7/2025
2.33M0.00

Class A Common Stock

Direct
J · J

Shares

+2.33M

Price / share

Trade value

% of position

New position
11/7/2025
0.002.33M

Class A Common Stock

Direct
J · J

Shares

2.33M

Price / share

Trade value

% of position

New position
11/7/2025
2.33M0.00

Class A Common Stock

Direct
P · Purchase

Shares

+1K

Price / share

$60.00

Trade value

$60K

% of position

New position
11/7/2025
0.001K
Total

Net shares

2.32M

Net value

$60K

Derivative Transactions5

Class B Common Stock

Direct
J · J
Converts to

Class A Common Stock

2.33M shares

Shares

+2.33M

Strike price

Held after

2.33M

Exercisable

11/7/2025

Stock Option (right to buy)

Direct
J · J
Converts to

Common Stock

640K shares

Shares

640K

Strike price

2.8

Held after

0.00

Exercisable

11/7/2025

Stock Option (right to buy)

Direct
J · J
Converts to

Class A Common Stock

640K shares

Shares

+640K

Strike price

2.8

Held after

640K

Exercisable

11/7/2025

Stock Option (right to buy)

Direct
J · J
Converts to

Common Stock

501.55K shares

Shares

501.55K

Strike price

20.04

Held after

0.00

Exercisable

11/7/2025

Stock Option (right to buy)

Direct
J · J
Converts to

Class A Common Stock

501.55K shares

Shares

+501.55K

Strike price

20.04

Held after

501.55K

Exercisable

11/7/2025
TSAO DAVID — Insider Transaction (Form 4) Filed Nov 12, 2025 | Finecho