Greedy Insider
BillionToOne, Inc. (BLLN) Insider Trades and Scores
BillionToOne, Inc. (BLLN) insider trades: since Jun 8, 2026, Greedy Insider recorded 0 open-market buys and 181 sales on Form 4 from 6 insiders. The strongest recent filing scored 89 (Strong).
Who bought and who sold
Across the last 181 scoreable Form 4 transactions in BLLN, 0 were open-market purchases and 181 were sales. The table lists the most recent filings with each one's Greediness Score, so the structurally unusual trades are easy to spot first.
| Insider | Role | Type | Shares | Date | Score | ||
|---|---|---|---|---|---|---|---|
| Atay Oguzhan | Chair | Sell | 900.0 | 88589.52 | 2026-10-15 | 64 | View |
| Atay Oguzhan | Chair | Sell | 1861.0 | 185809.31 | 2026-10-15 | 69 | View |
| Atay Oguzhan | Chair | Sell | 1276.0 | 128369.3 | 2026-10-15 | 67 | View |
| Atay Oguzhan | Chair | Sell | 980.0 | 99751.36 | 2026-10-15 | 65 | View |
| Atay Oguzhan | Chair | Sell | 133.0 | 13669.288 | 2026-10-15 | 62 | View |
| Atay Oguzhan | Chair | Sell | 3083.0 | 303119.94 | 2026-10-14 | 72 | View |
| Atay Oguzhan | Chair | Sell | 100.0 | 9900.0 | 2026-10-14 | 62 | View |
| Atay Oguzhan | Chair | Sell | 2667.0 | 261366.0 | 2026-10-14 | 66 | View |
| Atay Oguzhan | Chair | Sell | 1961.0 | 179571.12 | 2026-10-12 | 73 | View |
| Atay Oguzhan | Chair | Sell | 2553.0 | 237546.44 | 2026-10-12 | 75 | View |
The strongest recent filing
Atay Oguzhan (Chair) sold 15,539 shares of BillionToOne, Inc. on Aug 5, 2026, a filing that scored 89 (Strong). It scored Strong because a senior insider was trading and it was direct personal ownership. The score describes the filing, not future returns. This is not investment advice.
Cluster activity
A cluster buy is present: 4 insiders (Tsao David, ten Bosch John Roderick, Atay Oguzhan, Sakakibara Shan Riku) traded BLLN the same direction within a 7-day window. Shared conviction is a stronger structural signal than a lone trade.
How this compares with BillionToOne, Inc.'s own history
Open-market buys make up 0% of the 181 scoreable BLLN transactions on record between Jun 8, 2026 and Oct 15, 2026. Comparing a filing with the company's own buy/sell mix is how you tell a routine disposal from an unusual accumulation.
Methodology and sources
Scores come from six published, user-adjustable factors (insider role, cluster activity, trade size versus the insider's own history, position impact, filing urgency, and direct versus indirect ownership). The score describes the filing, not future returns. This is not investment advice.
Key facts
- Scoreable Form 4 transactions on record: 181
- Open-market buys: 0
- Sales: 181
- Distinct insiders: 6
- Strongest recent Greediness Score: 89 (Strong)
Primary sources
Related
- Strongest filing
- BLLN in the live feed
- How the Greediness Score works
- What is a cluster buy?
- Form 4 transaction codes
The score describes the filing, not future returns. This is not investment advice.