Arkolith/Insider Trading/BLLN/Form 4

Tsao David

Chief Technology Officer, DirectorBillionToOne, Inc. (BLLN) · full profile →Form 4 · filed Jun 17, 2026
Net Selling
Open-Market Buys
$0
Open-Market Sells
$2.0M
Net Open-Market Flow
-$2.0M
Transactions
15
13 non-derivative · 2 derivative

Non-Derivative Transactions (Table I)

DateActionSharesPriceValueOwned After
Jun 15, 2026Option exercise(M)10K$2.80$28K11K
Jun 15, 2026Option exercise(M)10K$2.80$28K21K
Jun 15, 2026Sell(S)2K$100.37$171K19K
Jun 15, 2026Sell(S)2K$101.55$240K17K
Jun 15, 2026Sell(S)3K$102.77$289K14K
Jun 15, 2026Sell(S)3K$103.68$300K11K
Jun 15, 2026Sell(S)230$104.47$24K11K
Jun 15, 2026Sell(S)600$98.74$59K10K
Jun 15, 2026Sell(S)1K$100.05$100K9K
Jun 15, 2026Sell(S)2K$101.37$249K7K
Jun 15, 2026Sell(S)3K$102.60$306K4K
Jun 15, 2026Sell(S)2K$103.63$249K2K
Jun 15, 2026Sell(S)563$104.32$59K1K

Derivative Transactions (Table II)

DateActionSharesPriceValueOwned After
Jun 15, 2026Option exercise(M)10K$2.80$28K630K
Jun 15, 2026Option exercise(M)10K$2.80$28K620K

Transaction Codes

M
Option exercise / conversion
S
Open-market sale

Data Source & Provenance

Parsed from a single SEC EDGAR Form 4 filing (accession 0002087127-26-000002) within minutes of acceptance. Every field above traces to the original document. Verify it directly:

View original filing on SEC.govRaw Form 4 XML