Arkolith/Insider Trading/BLLN/Form 4

Sakakibara Shan Riku

Chief Product OfficerBillionToOne, Inc. (BLLN) · full profile →Form 4 · filed Jul 13, 2026
Net Selling
Open-Market Buys
$0
Open-Market Sells
$1.0M
Net Open-Market Flow
-$1.0M
Transactions
13
9 non-derivative · 4 derivative

Non-Derivative Transactions (Table I)

DateActionSharesPriceValueOwned After
Jul 9, 2026Option exercise(M)174$8.65$2K208K
Jul 9, 2026Option exercise(M)1K$30.78$34K209K
Jul 9, 2026Option exercise(M)1K$30.78$42K211K
Jul 9, 2026Option exercise(M)1K$30.78$42K212K
Jul 9, 2026Sell(S)4K$125.00$500K208K
Jul 9, 2026Sell(S)174$125.00$22K208K
Jul 9, 2026Sell(S)1K$125.00$140K207K
Jul 9, 2026Sell(S)1K$125.00$169K205K
Jul 9, 2026Sell(S)1K$125.00$169K204K

Derivative Transactions (Table II)

DateActionSharesPriceValueOwned After
Jul 9, 2026Option exercise(M)174$8.65$2K36K
Jul 9, 2026Option exercise(M)1K$30.78$34K64K
Jul 9, 2026Option exercise(M)1K$30.78$42K63K
Jul 9, 2026Option exercise(M)1K$30.78$42K61K

Transaction Codes

M
Option exercise / conversion
S
Open-market sale

Data Source & Provenance

Parsed from a single SEC EDGAR Form 4 filing (accession 0002088547-26-000006) 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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