TSAO DAVID

PrivateCIK: 2087127
Location

MENLO PARK, CA

TSAO DAVID (Chief Technology Officer) sold 95.2% of their position (20K shares) of BILLIONTOONE, INC. on the open market

Open‑market sale worth $2.50M — a major position exit. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 10 sales
InsiderTSAO DAVIDCIK 2087127
IssuerBILLIONTOONE, INC.CIK 2070849
DirectorOfficer· Chief Technology Officer
Since Nov 2025
-20K
Net shares
Net seller
$2.50M
Total sold
10
Open market trades
0B · 10S
14
Total transactions
20K acquired · 40K disposed
Non-Derivative Transactions12

Class A Common Stock

Direct
M · Option Exercise

Shares

+10K

Price / share

$2.80

Trade value

$28K

% of position

1000.0%
7/13/2026
1K11K

Class A Common Stock

Direct
M · Option Exercise

Shares

+10K

Price / share

$2.80

Trade value

$28K

% of position

90.9%
7/13/2026
11K21K

Class A Common Stock

Direct
S · Sale

Shares

1.10K

Price / share

$122.90

Trade value

$135.44K

% of position

5.2%
7/13/2026
21K19.90K

Class A Common Stock

Direct
S · Sale

Shares

2.48K

Price / share

$123.84

Trade value

$306.76K

% of position

12.4%
7/13/2026
19.90K17.42K

Class A Common Stock

Direct
S · Sale

Shares

2.42K

Price / share

$124.90

Trade value

$301.63K

% of position

13.9%
7/13/2026
17.42K15.01K

Class A Common Stock

Direct
S · Sale

Shares

3.19K

Price / share

$125.85

Trade value

$400.82K

% of position

21.2%
7/13/2026
15.01K11.82K

Class A Common Stock

Direct
S · Sale

Shares

821.00

Price / share

$126.89

Trade value

$104.18K

% of position

6.9%
7/13/2026
11.82K11K

Class A Common Stock

Direct
S · Sale

Shares

1.14K

Price / share

$122.84

Trade value

$139.80K

% of position

10.3%
7/13/2026
11K9.86K

Class A Common Stock

Direct
S · Sale

Shares

2.27K

Price / share

$123.71

Trade value

$281.31K

% of position

23.1%
7/13/2026
9.86K7.59K

Class A Common Stock

Direct
S · Sale

Shares

1.73K

Price / share

$124.65

Trade value

$215.03K

% of position

22.7%
7/13/2026
7.59K5.86K

Class A Common Stock

Direct
S · Sale

Shares

3.83K

Price / share

$125.76

Trade value

$482.28K

% of position

65.4%
7/13/2026
5.86K2.03K

Class A Common Stock

Direct
S · Sale

Shares

1.03K

Price / share

$126.90

Trade value

$130.45K

% of position

50.7%
7/13/2026
2.03K1K
Total

Net shares

+0.00

Net value

-$2.44M

Derivative Transactions2

Stock Option (right to buy)

Direct
M · Option Exercise
Converts to

Class A Common Stock

10K shares

Shares

10K

Strike price

2.80

Held after

610K

Exercisable

7/13/2026

Stock Option (right to buy)

Direct
M · Option Exercise
Converts to

Class A Common Stock

10K shares

Shares

10K

Strike price

2.80

Held after

600K

Exercisable

7/13/2026