$BLLN insider trading
Over the last 12 months, BillionToOne insiders reported 6 buys totaling $3.2M and 29 sales totaling $40.0M across SEC Form 4 filings. 83% of those filings were made under pre-arranged 10b5-1 trading plans.
- Bought · 12m
- $3.2M 6 events
- Sold · 12m
- $40.0M 29 events
- Events · 12m
- 35 Form 4 filings, grouped
- Insiders · 12m
- 8 distinct reporters
- 10b5-1 share
- 83% of events, not dollars
All insider trades
Scroll the table sideways for price, value and marks.
| Date | Insider | Type | Shares | Avg price | Value | Δ stake | Marks |
|---|---|---|---|---|---|---|---|
| Sep 14, 2026 | Atay OguzhanChairman and CEO · O·D | ▼ Sale | 5,332 | $98 | $523K | -3.3% | plan · 2 tranches · indirect |
| Sep 14, 2026 | Atay OguzhanChairman and CEO · O·D | ▼ Sale | 24,999 | $100.32 | $2.5M | -100% | plan · 8 tranches |
| Sep 9, 2026 | ten Bosch John RoderickSVP of Laboratory Operations · O | ▼ Sale | 1,416 | $97.54 | $138K | -5.4% | plan |
| Sep 9, 2026 | Tsao DavidChief Technology Officer · O·D | ▼ Sale | 20,000 | $98.77 | $2.0M | -95.2% | plan · 2 tranches |
| Sep 8, 2026 | Lynch Thomas P.See Remarks · O | ▼ Sale | 20,000 | $99.99 | $2.0M | -96.6% | plan · 13 tranches |
| Aug 25, 2026 | Tsao DavidChief Technology Officer · O·D | ▼ Sale | 10,000 | $100 | $1.0M | -90.9% | plan |
| Aug 25, 2026 | ten Bosch John RoderickSVP of Laboratory Operations · O | ▼ Sale | 1,417 | $100 | $142K | -5.1% | plan |
| Aug 10, 2026 | ten Bosch John RoderickSVP of Laboratory Operations · O | ▼ Sale | 1,417 | $92.86 | $132K | -4.8% | plan |
| Aug 10, 2026 | Tsao DavidChief Technology Officer · O·D | ▼ Sale | 10,000 | $92.86 | $929K | -90.9% | plan |
| Aug 5, 2026 | Atay OguzhanChairman and CEO · O·D | ▼ Sale | 15,539 | $150.03 | $2.3M | -100% | plan |
| Aug 3, 2026 | Atay OguzhanChairman and CEO · O·D | ▼ Sale | 12,500 | $137.37 | $1.7M | -7.1% | plan · 2 tranches · indirect |
| Aug 3, 2026 | Atay OguzhanChairman and CEO · O·D | ▼ Sale | 32,500 | $136.95 | $4.5M | -100% | plan · 21 tranches |
| Jul 31, 2026 | Sakakibara Shan RikuChief Product Officer · O | ▼ Sale | 4,000 | $140.21 | $561K | -2% | plan |
| Jul 16, 2026 | Johnson Nancy JoAnnSee Remarks · O | ▼ Sale | 14,199 | $128.29 | $1.8M | -67.3% | plan · 4 tranches |
| Jul 13, 2026 | ten Bosch John RoderickSVP of Laboratory Operations · O | ▼ Sale | 4,251 | $125.46 | $533K | -12.7% | plan · 3 tranches |
| Jul 13, 2026 | Tsao DavidChief Technology Officer · O·D | ▼ Sale | 20,000 | $124.88 | $2.5M | -95.2% | plan · 10 tranches |
| Jul 9, 2026 | Sakakibara Shan RikuChief Product Officer · O | ▼ Sale | 8,000 | $125 | $1.0M | -3.8% | plan · 5 tranches |
| Jul 9, 2026 | Atay OguzhanChairman and CEO · O·D | ▼ Sale | 12,500 | $126.1 | $1.6M | -100% | plan · 4 tranches |
| Jul 6, 2026 | Atay OguzhanChairman and CEO · O·D | ▼ Sale | 12,500 | $122.05 | $1.5M | -6.7% | plan · 14 tranches · indirect |
| Jul 6, 2026 | Atay OguzhanChairman and CEO · O·D | ▼ Sale | 26,250 | $122.05 | $3.2M | -100% | plan · 14 tranches |
| Jul 1, 2026 | Johnson Nancy JoAnnSee Remarks · O | ▼ Sale | 801 | $124.91 | $100K | -3.7% | plan |
| Jun 29, 2026 | ten Bosch John RoderickSVP of Laboratory Operations · O | ▼ Sale | 1,416 | $120 | $170K | -4% | plan |
| Jun 24, 2026 | Sakakibara Shan RikuChief Product Officer · O | ▼ Sale | 8,000 | $110 | $880K | -3.7% | plan · 2 tranches |
| Jun 15, 2026 | ten Bosch John RoderickSee Remarks · O | ▼ Sale | 2,832 | $101.47 | $287K | -7.5% | plan · 2 tranches |
| Jun 15, 2026 | Tsao DavidChief Technology Officer · O·D | ▼ Sale | 20,000 | $102.27 | $2.0M | -95.2% | plan · 11 tranches |
| Jun 9, 2026 | Johnson Nancy JoAnnSee Remarks · O | ▼ Sale | 14,000 | $100.18 | $1.4M | -39% | plan · 7 tranches |
| Jun 8, 2026 | Sakakibara Shan RikuChief Product Officer · O | ▼ Sale | 8,000 | $98.22 | $786K | -3.6% | plan · 2 tranches |
| Jun 8, 2026 | Atay OguzhanSee Remarks · O·D | ▼ Sale | 12,500 | $98.22 | $1.2M | -6.2% | plan · 2 tranches · indirect |
| Jun 8, 2026 | Atay OguzhanSee Remarks · O·D | ▼ Sale | 26,250 | $97.66 | $2.6M | -100% | plan · 8 tranches |
| Nov 7, 2025 | Lynch Thomas P.See Remarks · O | ▲ Buy | 100 | $60 | $6K | +16.7% | — |
| Nov 7, 2025 | Tsao DavidChief Technology Officer · O·D | ▲ Buy | 1,000 | $60 | $60K | — | — |
| Nov 7, 2025 | ten Bosch John RoderickSee Remarks · O | ▲ Buy | 800 | $60 | $48K | +2.2% | — |
| Nov 7, 2025 | Johnson Nancy JoAnnSee Remarks · O | ▲ Buy | 6,900 | $60 | $414K | +23.8% | — |
| Nov 7, 2025 | Rai AkshayD | ▲ Buy | 2,500 | $60 | $150K | +22.7% | — |
| Nov 7, 2025 | Bremner Thomas SD | ▲ Buy | 41,666 | $60 | $2.5M | +6.4% | 6 tranches · indirect |
Every $BLLN filing on this page is one API call away
The same Form 4 data over REST or MCP, already grouped into events with the plan flag and the dollar value read. A free key does 100 calls a day and needs no card. Prefer email? BillionToOne filings can reach your inbox instead.
Corporate insiders — officers, directors and 10%+ owners — must report their trades to the SEC on Form 4 within two business days. This page shows open-market activity: purchases (code P), sales (S) and dispositions back to the issuer (D). Scheduled compensation events such as stock grants and option exercises are also filed on Form 4 but carry no trading signal, so they are not shown and counts here can be lower than the raw EDGAR filing total. We group each filing's transactions into one economic event (a laddered 10b5-1 sale is one event, not 25 rows), flag pre-arranged plans and late filings, and link every event to its AI-scored article in the $BLLN feed.