Nancy JoAnn Johnson files SEC Form 4 disclosures for BillionToOne, Inc.. They have made 1 open-market trade across 1 company since 2025, most recently 2026-07-16.
CIK 0002087387
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
1 open-market purchase totalling $414K since 2025, never a sale. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| BLLN | 6,900 | $677K |
Shares reported on the most recent Form 4, priced at the 2026-07-20 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| BLLN | SELL · 10b5-1 | 2026-07-16 | 2026-07-20 | $128.29 | $1.8M | +12.6% | -26.1% | — |
| BLLN | SELL · 10b5-1 | 2026-07-01 | 2026-07-06 | $124.91 | $100K | +4.2% | +21.7% | -11.5% |
| BLLN | SELL · 10b5-1 | 2026-06-08 | 2026-06-10 | $100.18 | $1.4M | +3.6% | +26.0% | -1.6% |
| BLLN | BUY | 2025-11-07 | 2025-11-12 | $60.00 | $414K | +19.3% | +1.4% | -8.6% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.