BLLN insider buying
1 cluster buyBillionToOne, Inc. · Healthcare
When two or more insiders at BillionToOne, Inc. buy BLLN on the open market around the same time, that clustered conviction is one of the highest-signal patterns in SEC filing data. Below is every cluster we've detected in BLLN plus the full record of qualifying open-market buys, each parsed directly from Form 4 filings and linked back to the source on SEC EDGAR.
Detected clusters
- Nov 7 – Nov 7, 2025Detected Nov 7, 20253 insidersTotal bought$3.1MMarket cap$5.7B
All notable open-market buys in BLLN
Every open-market Form 4 purchase, newest first. Click an insider to see their full buying record across companies.
| Date | Insider | Shares | Price | Value | Filing |
|---|---|---|---|---|---|
| Nov 7, 2025 | Bremner Thomas Scluster Director | 17,791 | $60.00 | $1.1M | SEC ↗ |
| Nov 7, 2025 | Johnson Nancy JoAnncluster See Remarks | 6,900 | $60.00 | $414.0K | SEC ↗ |
| Nov 7, 2025 | Bremner Thomas Scluster Director | 6,867 | $60.00 | $412.0K | SEC ↗ |
| Nov 7, 2025 | Bremner Thomas Scluster Director | 5,446 | $60.00 | $326.8K | SEC ↗ |
| Nov 7, 2025 | Bremner Thomas Scluster Director | 4,084 | $60.00 | $245.0K | SEC ↗ |
| Nov 7, 2025 | Bremner Thomas Scluster Director | 4,016 | $60.00 | $241.0K | SEC ↗ |
| Nov 7, 2025 | Bremner Thomas Scluster Director | 3,462 | $60.00 | $207.7K | SEC ↗ |
| Nov 7, 2025 | Rai Akshaycluster Director | 2,500 | $60.00 | $150.0K | SEC ↗ |
| Nov 7, 2025 | Director, Chief Technology Officer | 1,000 | $60.00 | $60.0K | SEC ↗ |
| Nov 7, 2025 | See Remarks | 800 | $60.00 | $48.0K | SEC ↗ |
| Nov 7, 2025 | See Remarks | 100 | $60.00 | $6.0K | SEC ↗ |
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BLLN insider buying — FAQ
- Are insiders buying BLLN stock?
- Yes — 6 distinct insiders have bought BLLN (BillionToOne, Inc.) on the open market, including 1 cluster buy where two or more insiders bought within a rolling window. The most recent qualifying activity was Nov 12, 2025.
- How much BLLN stock have insiders bought?
- Insiders have bought a combined $3.2M of BLLN across 11 open-market purchases, based on SEC Form 4 filings.
- What is an insider cluster buy in BLLN?
- A cluster buy is two or more distinct BillionToOne, Inc. insiders — officers, directors, or 10% owners — each buying BLLN on the open market within a rolling window. BLLN has 1 detected cluster buy to date.
- Where does this BLLN insider trading data come from?
- Every figure is parsed directly from SEC Form 4 filings on EDGAR, and each purchase on this page links back to its original filing document.
How we track insider buying in BLLN
We continuously poll SEC EDGAR for new Form 4 filings and parse every open-market purchase (transaction code P). A cluster is recorded when two or more distinct insiders — officers, directors, or 10% owners — each buy BLLN within a rolling window. We track clusters at every company size, from micro-caps to mega-caps. Every figure on this page traces back to an official filing; open any row to jump straight to the source document. What counts as a cluster buy?
This page is informational and reflects public filing data. It is not investment advice or a recommendation regarding BLLN.