David Tsao, Chief Technology Officer at BillionToOne, Inc. (BLLN), sold 20,000 shares at $100.37 ($2.0M) on 2026-06-15, disclosed to the SEC on 2026-06-17.
Scheduled sale ($2.0M) by Chief Technology Officer under a pre-arranged 10b5-1 plan. Pre-set trade — not a discretionary signal on the stock.
Nothing distinguishes this filing.
| # | Price | Shares | Value | % of Total |
|---|---|---|---|---|
| 1 | $98.74 | 600 | $59K | 2.9% |
| 2 | $100.05 | 1,000 | $100K | 4.9% |
| 3 | $100.37 | 1,704 | $171K | 8.4% |
| 4 | $101.37 | 2,461 | $249K | 12.2% |
| 5 | $101.55 | 2,361 | $240K | 11.7% |
| 6 | $102.60 | 2,978 |
| $306K |
| 14.9% |
| 7 | $102.77 | 2,816 | $289K | 14.1% |
| 8 | $103.63 | 2,398 | $249K | 12.1% |
| 9 | $103.68 | 2,889 | $300K | 14.6% |
| 10 | $104.32 | 563 | $59K | 2.9% |
| 11 | $104.47 | 230 | $24K | 1.2% |
| Total | $102.27 avg | 20,000 | $2.0M | 100% |
| Filing → |
| BLLN | SELL | 2026-09-11 | $2.0M | — | Filing → |
| BLLN | SELL | 2026-08-27 | $1.0M | — | Filing → |
| BLLN | SELL | 2026-08-12 | $929K | — | Filing → |