Nancy JoAnn Johnson sold $1.8M of BillionToOne (BLLN)

Executed Jul 16, disclosed Jul 20, 4 days later.

Value, as filed

$1.8M

14,199 sh across 4 lots

Executed

Jul 16

the trade date, as filed

Disclosed

Jul 20

4 days after the trade

Return, 21 sessionsiFrom the disclosed entry session; derived

–

purchases only

Returns are measured on stock purchases only.

The filer

Nancy JoAnn Johnson See Remarks profile →

Nancy JoAnn Johnson (See Remarks) filed 4 Form 4 reports in the trailing twelve months (1 purchase, 3 sales), most often in BillionToOne, Inc. (BLLN). Across 1 priced purchase filing, the average 21-session return was -3.7% from execution and -7.9% from disclosure (delay-adjusted; derived). The largest single filing was $1.8M of BLLN (14,199 sh across 4 lots, as filed), executed Jul 16.

The name

BLLN

BillionToOne, Inc. BLLN · Healthcare · 28 filings in 24 months ticker →

Healthcare · BillionToOne, Inc., a precision diagnostics company, quantifies biology to create molecular diagnostics

More Healthcare filings→ Insider filings, newest first→ View the original filing at www.sec.gov→

Other filings by Nancy JoAnn Johnson in BLLN

BLLNSALE BillionToOne, Inc. $100K
801 sh × $124.91
Exec Jul 1
Filed Jul 6 · 8:38 PM ET BLLNSALE BillionToOne, Inc. $1.4M
13,500 sh across 5 lots
Exec Jun 8
Filed Jun 10 · 5:30 PM ET BLLNPURCHASE BillionToOne, Inc. $414K
6,900 sh × $60.00
Exec Nov 7 2025
Filed Nov 12 2025 · 6:07 PM ET