AlphaYouDT
Insider selling
David Tsao sold $417K of BillionToOne, Inc. (BLLN) stock
David Tsao, Chief Technology Officer of BillionToOne, Inc. (BLLN), sold 3,333 shares of BLLN stock worth $417K, per an SEC Form 4 filed Sep 28, 2026.
The sale was pre-arranged (a 10b5-1 plan or an option exercise), not a fresh decision.
The trade happened on Sep 24, 2026, 4 days before it was made public.
BLLN has moved -1.5% since the trade date, from $124.90 to $123.08 (Sep 25, 2026 close).
- Traded
- Sep 24, 2026
- Disclosed
- Sep 28, 2026
- Filing delay
- 4 days
- Price since
- -1.5%
- Role
- Chief Technology Officer
- Source
- SEC Form 4
More BLLN insider and Congress trades
From a public SEC Form 4, linked above. Not investment advice, and not a recommendation to buy or sell.