BillionToOne ($BLLN) Insider Trading & Smart Money Activity
BillionToOne, Inc. ($BLLN) has 10 insider trades and 2 analyst ratings on file. In the last 12 months on the open market, no insider bought and 5 insiders sold ($11.31M), net -$11.31M.
- Insider buyers (12 mo)
- 0
- Insider sellers (12 mo)
- 5
- Net insider $ (12 mo)
- -$11.31M
- Congress trades (12 mo)
- 0
- 13F moves on file
- 0
- Analyst ratings on file
- 2
BLLN insider buying and selling by quarter
| Quarter | Insider buys | Insider sales | Congress buys / sales | 13F added / cut |
|---|---|---|---|---|
| Q1 2026 | 0 | 0 | 0 / 0 | 0 / 0 |
| Q2 2026 | 0 | 0 | 0 / 0 | 0 / 0 |
| Q3 2026 | 0 | 5 · $5.94M | 0 / 0 | 0 / 0 |
| Q4 2026 | 0 | 5 · $5.37M | 0 / 0 | 0 / 0 |
Insider buys and sales count open-market trades only (Form 4 codes P and S). Grants, option exercises and tax withholding are left out.
All BLLN insider, congress, 13F and analyst activity
| Date | Source | Who | Action | Shares | Value / amount | ΔOwn | 1W | 1M | 6M | Filing | Story |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Insider | Oguzhan AtayChairman and CEO | Sell (Open-market sale) 10b5-1 | 5.15K sh | $516.19K | -100% | SEC | Read | ||||
| Insider | Oguzhan AtayChairman and CEO | Sell (Open-market sale) 10b5-1 | 5.85K sh | $574.39K | -100% | SEC | Read | ||||
| Insider | Atay OguzhanChairman and CEO | Sell (Open-market sale) 10b5-1 | 19.33K sh | $1.82M | Read | ||||||
| Insider | Tsao DavidChief Technology Officer | Sell (Open-market sale) 10b5-1 | 20K sh | $2.16M | -14.7% | — | |||||
| Insider | ten Bosch John RoderickSVP of Laboratory Operations | Sell (Open-market sale) 10b5-1 | 2.83K sh | $298K | -14.7% | — | |||||
| Insider | Atay OguzhanChairman and CEO | Sell (Open-market sale) 10b5-1 | 11K sh | $1.33M | -10.4% | — | |||||
| Insider | Tsao DavidChief Technology Officer | Sell (Open-market sale) 10b5-1 | 3.33K sh | $416.62K | -15.3% | — | |||||
| Insider | ten Bosch John RoderickSVP of Laboratory Operations | Sell (Open-market sale) 10b5-1 | 1.42K sh | $169.92K | -15.3% | — | |||||
| Insider | ten Bosch John RoderickSVP of Laboratory Operations | Sell (Open-market sale) 10b5-1 | 1.42K sh | $150.96K | +17.2% | — | |||||
| Insider | Lynch Thomas P.General Counsel, Chief Compliance Officer and Secretary | Sell (Open-market sale) 10b5-1 | 35.11K sh | $3.87M | +12.9% | — | |||||
| Analyst | Guggenheim | Reiterates to buy | PT $125 | +2.5% | +10.1% | Read | |||||
| Analyst | Guggenheim | Reiterates to buy | PT $125 | +2.5% | +10.1% | Read |
1W / 1M / 6M = how BLLN moved from the trade or filing date.
Insider trading in BLLN: who is buying and selling
| Insider | Role | Trades | Open-market net | Shares held | Last trade |
|---|---|---|---|---|---|
| Oguzhan Atay | Chairman and CEO | 2 | -$1.09M | — | Oct 15, 2026 |
| Atay Oguzhan | Chairman and CEO | 2 | -$3.15M | Oct 12, 2026 | |
| ten Bosch John Roderick | SVP of Laboratory Operations | 3 | -$618.87K | Oct 5, 2026 | |
| Tsao David | Chief Technology Officer | 2 | -$2.58M | Oct 5, 2026 | |
| Lynch Thomas P. | General Counsel, Chief Compliance Officer and Secretary | 1 | -$3.87M | Sep 17, 2026 |
Analyst ratings on BLLN
Frequently asked questions
Are BLLN insiders buying or selling?
Over the last 12 months 0 insiders made 0 open-market purchases worth $0 and 5 insiders made 10 open-market sales worth $11.31M, a net -$11.31M.
What is the latest insider trade in BLLN?
Oguzhan Atay, Chairman and CEO filed a sell (open-market sale) of 5.15K sh worth $516.19K on Oct 15, 2026.
Other diagnostics & research stocks
Data comes from public SEC Form 4 and 13F filings and STOCK Act disclosures. Dates are the trade or filing date reported. This page is for research only and is not investment advice.
Get a text when insiders, Congress or big funds trade a stock.
Free. Reply STOP anytime.