Arkolith/Insider Trading/BLLN/Form 4

Tsao David

Chief Technology Officer, DirectorBillionToOne, Inc. (BLLN) · full profile →Form 4 · filed Jul 15, 2026
Net Selling
Open-Market Buys
$0
Open-Market Sells
$2.5M
Net Open-Market Flow
-$2.5M
Transactions
14
12 non-derivative · 2 derivative

Non-Derivative Transactions (Table I)

DateActionSharesPriceValueOwned After
Jul 13, 2026Option exercise(M)10K$2.80$28K11K
Jul 13, 2026Option exercise(M)10K$2.80$28K21K
Jul 13, 2026Sell(S)1K$122.90$135K20K
Jul 13, 2026Sell(S)2K$123.84$307K17K
Jul 13, 2026Sell(S)2K$124.90$302K15K
Jul 13, 2026Sell(S)3K$125.85$401K12K
Jul 13, 2026Sell(S)821$126.89$104K11K
Jul 13, 2026Sell(S)1K$122.84$140K10K
Jul 13, 2026Sell(S)2K$123.71$281K8K
Jul 13, 2026Sell(S)2K$124.65$215K6K
Jul 13, 2026Sell(S)4K$125.76$482K2K
Jul 13, 2026Sell(S)1K$126.90$130K1K

Derivative Transactions (Table II)

DateActionSharesPriceValueOwned After
Jul 13, 2026Option exercise(M)10K$2.80$28K610K
Jul 13, 2026Option exercise(M)10K$2.80$28K600K

Transaction Codes

M
Option exercise / conversion
S
Open-market sale

Data Source & Provenance

Parsed from a single SEC EDGAR Form 4 filing (accession 0002087127-26-000004) within minutes of acceptance. Every field above traces to the original document. Verify it directly:

View original filing on SEC.govRaw Form 4 XML

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