Nancy JoAnn Johnson bought $414K of BillionToOne (BLLN)
Executed Nov 7 2025, disclosed Nov 12 2025, 5 days later.
Over the 21 trading sessions from the disclosed entry session (Nov 12 2025), the stock returned -7.9% (delay-adjusted); from the execution session (Nov 7 2025), -3.7%. Derived: entry at the session's open, exit at the close 20 sessions later.
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.
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→14,199 sh across 4 lots
Exec Jul 16
Filed Jul 20 · 7:38 PM ET 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