SAKAKIBARA SHAN RIKU

PrivateCIK: 2088547
Location

MENLO PARK, CA

SAKAKIBARA SHAN RIKU (Chief Product Officer) sold 3.6% of their position (8K shares) of BILLIONTOONE, INC. on the open market

Open‑market sale worth $785.8K — a minor trim. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 2 sales
InsiderSAKAKIBARA SHAN RIKUCIK 2088547
IssuerBILLIONTOONE, INC.CIK 2070849
Officer· Chief Product Officer
Since Nov 2025
-8K
Net shares
Net seller
$785.8K
Total sold
2
Open market trades
0B · 2S
2
Total transactions
8K disposed
Non-Derivative Transactions2

Class A Common Stock

Direct
S · Sale

Shares

4K

Price / share

$96.45

Trade value

$385.80K

% of position

1.8%
6/8/2026
220K216K

Class A Common Stock

Direct
S · Sale

Shares

4K

Price / share

$100.00

Trade value

$400K

% of position

1.9%
6/8/2026
216K212K
Total

Net shares

8K

Net value

-$785.80K

Derivative Transactions0
No derivative transactions reported
SAKAKIBARA SHAN RIKU — Insider Transaction (Form 4) Filed Jun 11, 2026 | Finecho