A molecular diagnostics company that reads cell-free DNA from a simple blood draw to offer ultrasensitive prenatal and cancer tests. Its UNITY prenatal portfolio screens for fetal conditions and antigens without needing a father's sample, while its Northstar oncology tests guide therapy choices and monitor response. Founded in 2016 by two scientists who met as Princeton roommates, the name "BillionToOne" captures the ability to spot a single DNA letter among the three billion in the human genome — and, the founders joke, it was the only domain name they could afford.
ten Bosch John RoderickSVP of Laboratory Operations · 3 transactions
-28.5%
26.5K†
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4.2K
Johnson Nancy JoAnnSee Remarks · 7 transactions
-24.5%
21.9K†
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14.0K
Pagano AnthonyDirector · 1 transaction
+61.6%
7.9K
3.0K
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Select a row to see that insider’s individual transactions. † Sum of the holdings confirmed in the 12 months before this insider's last filing. A Form 4 reports a holding per line — held directly, or through a named trust, partnership or foundation, and in each share class separately — never a person’s total. Lines not restated in that time are left out and shown apart: an active filer restates what they still hold, so a line they did not restate is more often an entity since renamed, whose shares a successor line reports too. An amber marker means some were left out.
Net open-market activity over the last 6 months: -103.0K shares. Grants, option exercises and tax withholding are excluded — they are compensation mechanics, not decisions to buy or sell.