WaveMan · Form 4
Tsao David insider trades
> Search tickers & screens ⌘K
LIVE

Tsao David insider trades

Tsao David has filed 9 Form 4s with the SEC that we hold, all for BillionToOne, Inc. (BLLN), as Chief Technology Officer, Director. Across all of them we count 1 purchase worth $60.0K and 37 sales worth $11.0M reported on Form 4. In the last 12 months: 1 purchase ($60.0K) and 37 sales ($11.0M). The largest single trade was a sale of 10,000 shares of BillionToOne, Inc. worth $1.0M, dated 2026-09-09. Of 15 sales filed since we began reading the 10b5-1 checkbox, 15 (100%) were marked as made under a 10b5-1 trading plan. The first filing on our record is dated 2025-11-12 and the latest 2026-10-07.

BillionToOne, Inc. (BLLN)

Chief Technology Officer, Director · 9 filings · 38 purchases and sales
Trade dateCodeSharesValue as filedFiled
2025-11-07P, purchase reported on Form 41,000$60.0K2025-11-12
2026-06-15S, sale reported on Form 42,816$289.4K2026-06-17
2026-06-15S, sale reported on Form 42,889$299.5K2026-06-17
2026-06-15S, sale reported on Form 4230$24.0K2026-06-17
2026-06-15S, sale reported on Form 4600$59.2K2026-06-17
2026-06-15S, sale reported on Form 41,000$100.0K2026-06-17
2026-06-15S, sale reported on Form 42,461$249.5K2026-06-17
2026-06-15S, sale reported on Form 42,978$305.5K2026-06-17
2026-06-15S, sale reported on Form 42,398$248.5K2026-06-17
2026-06-15S, sale reported on Form 4563$58.7K2026-06-17
2026-06-15S, sale reported on Form 42,361$239.8K2026-06-17
2026-06-15S, sale reported on Form 41,704$171.0K2026-06-17
2026-07-13S, sale reported on Form 41,102$135.4K2026-07-15
2026-07-13S, sale reported on Form 42,477$306.8K2026-07-15
2026-07-13S, sale reported on Form 42,415$301.6K2026-07-15
2026-07-13S, sale reported on Form 43,185$400.8K2026-07-15
2026-07-13S, sale reported on Form 4821$104.2K2026-07-15
2026-07-13S, sale reported on Form 41,138$139.8K2026-07-15
2026-07-13S, sale reported on Form 42,274$281.3K2026-07-15
2026-07-13S, sale reported on Form 41,725$215.0K2026-07-15
2026-07-13S, sale reported on Form 43,835$482.3K2026-07-15
2026-07-13S, sale reported on Form 41,028$130.4K2026-07-15
2026-08-10S, sale reported on Form 410,000$928.6K2026-08-12
2026-08-25S, sale reported on Form 410,000$1.0M2026-08-27
2026-09-09S, sale reported on Form 410,000$975.4K2026-09-11
2026-09-09S, sale reported on Form 410,000$1.0M2026-09-11
2026-09-24S, sale reported on Form 43,333$416.6K2026-09-28
2026-10-05S, sale reported on Form 4866$91.7K2026-10-07
2026-10-05S, sale reported on Form 41,909$204.6K2026-10-07
2026-10-05S, sale reported on Form 44,284$464.4K2026-10-07
2026-10-05S, sale reported on Form 42,921$318.4K2026-10-07
2026-10-05S, sale reported on Form 420$2.2K2026-10-07
2026-10-05S, sale reported on Form 4555$58.6K2026-10-07
2026-10-05S, sale reported on Form 4400$42.4K2026-10-07
2026-10-05S, sale reported on Form 42,200$236.4K2026-10-07
2026-10-05S, sale reported on Form 44,916$533.6K2026-10-07
2026-10-05S, sale reported on Form 41,829$199.6K2026-10-07
2026-10-05S, sale reported on Form 4100$11.0K2026-10-07
Source

Counted from the Form 4 filings this reporting owner (SEC CIK 2087127) filed on EDGAR. Values are the transaction values as filed. See every filing on EDGAR, or browse insider buying and today's insider purchases.

Source: U.S. Securities and Exchange Commission (EDGAR) and other official government data · Updated 2026-10-12 · For informational purposes only, not investment advice.
Privacy · Terms