ATAY OGUZHAN

PrivateCIK: 2088549
Location

MENLO PARK, CA

ATAY OGUZHAN (See Remarks) sold 15.54K shares of BILLIONTOONE, INC. on the open market

Open‑market sale worth $2.33M. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 1 sale
InsiderATAY OGUZHANCIK 2088549
IssuerBILLIONTOONE, INC.CIK 2070849
DirectorOfficer· See Remarks
Since Nov 2025
-15.54K
Net shares
Net seller
$2.33M
Total sold
1
Open market trades
0B · 1S
3
Total transactions
15.54K acquired · 31.08K disposed
Non-Derivative Transactions2

Class A Common Stock

Direct
M · Option Exercise

Shares

+15.54K

Price / share

$2.80

Trade value

$43.51K

% of position

New position
8/5/2026
0.0015.54K

Class A Common Stock

Direct
S · Sale

Shares

15.54K

Price / share

$150.03

Trade value

$2.33M

% of position

New position
8/5/2026
15.54K0.00
Total

Net shares

+0.00

Net value

-$2.29M

Derivative Transactions1

Stock Option (right to buy)

Direct
M · Option Exercise
Converts to

Class A Common Stock

15.54K shares

Shares

15.54K

Strike price

2.80

Held after

526.96K

Exercisable

8/5/2026