AlphaYouDT
Insider selling
David Tsao sold $1M of BillionToOne, Inc. (BLLN) stock
David Tsao, Chief Technology Officer of BillionToOne, Inc. (BLLN), sold 10,000 shares of BLLN stock worth $1M, per an SEC Form 4 filed Aug 28, 2026.
The sale was pre-arranged (a 10b5-1 plan or an option exercise), not a fresh decision.
The trade happened on Aug 25, 2026, 3 days before it was made public.
BLLN has moved +3.8% since the trade date, from $100.08 to $103.86 (Sep 21, 2026 close).
- Traded
- Aug 25, 2026
- Disclosed
- Aug 28, 2026
- Filing delay
- 3 days
- Price since
- +3.8%
- 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.