Insider Profile · SEC Form 4 Activity · Trailing 90 Days
Tsao David
Over the trailing 90 days, Tsao David (Director at BillionToOne, Inc.) traded $4.8M of stock (net selling $4.5M) in BLLN, per 29 SEC Form 4 transactions.
- Role
- Director
- Companies
- BLLN
- Window
- Trailing 90 days · 29 transactions · CIK 2087127
- Net activity
- −$4.5M ($112K bought · $4.7M sold)
By Company (Trailing 90 Days)
| Symbol | Company | Txns | Bought | Sold | Net |
|---|---|---|---|---|---|
| BLLN | BillionToOne, Inc. | 29 | $112K | $4.7M | −$4.5M |
Transactions (29)
| Date | Symbol | Type | Shares | Value | Description |
|---|---|---|---|---|---|
| 2026-07-13 | BLLN | Sell | 821 | $104K | Open market or private sale |
| 2026-07-13 | BLLN | Sell | 3.2K | $401K | Open market or private sale |
| 2026-07-13 | BLLN | Sell | 2.4K | $302K | Open market or private sale |
| 2026-07-13 | BLLN | Sell | 2.5K | $307K | Open market or private sale |
| 2026-07-13 | BLLN | Sell | 10.0K | $28K | Exercise or conversion of derivative security |
| 2026-07-13 | BLLN | Buy | 10.0K | $28K | Exercise or conversion of derivative security |
| 2026-07-13 | BLLN | Buy | 10.0K | $28K | Exercise or conversion of derivative security |
| 2026-07-13 | BLLN | Sell | 1.0K | $130K | Open market or private sale |
| 2026-07-13 | BLLN | Sell | 1.1K | $135K | Open market or private sale |
| 2026-07-13 | BLLN | Sell | 10.0K | $28K | Exercise or conversion of derivative security |
| 2026-07-13 | BLLN | Sell | 3.8K | $482K | Open market or private sale |
| 2026-07-13 | BLLN | Sell | 1.7K | $215K | Open market or private sale |
| 2026-07-13 | BLLN | Sell | 2.3K | $281K | Open market or private sale |
| 2026-07-13 | BLLN | Sell | 1.1K | $140K | Open market or private sale |
| 2026-06-15 | BLLN | Sell | 2.4K | $249K | Open market or private sale |
| 2026-06-15 | BLLN | Sell | 10.0K | $28K | Exercise or conversion of derivative security |
| 2026-06-15 | BLLN | Sell | 10.0K | $28K | Exercise or conversion of derivative security |
| 2026-06-15 | BLLN | Sell | 230 | $24K | Open market or private sale |
| 2026-06-15 | BLLN | Sell | 563 | $59K | Open market or private sale |
| 2026-06-15 | BLLN | Sell | 2.9K | $300K | Open market or private sale |
| 2026-06-15 | BLLN | Sell | 2.8K | $289K | Open market or private sale |
| 2026-06-15 | BLLN | Sell | 2.4K | $240K | Open market or private sale |
| 2026-06-15 | BLLN | Sell | 1.7K | $171K | Open market or private sale |
| 2026-06-15 | BLLN | Buy | 10.0K | $28K | Exercise or conversion of derivative security |
| 2026-06-15 | BLLN | Sell | 2.5K | $249K | Open market or private sale |
| 2026-06-15 | BLLN | Buy | 10.0K | $28K | Exercise or conversion of derivative security |
| 2026-06-15 | BLLN | Sell | 1.0K | $100K | Open market or private sale |
| 2026-06-15 | BLLN | Sell | 600 | $59K | Open market or private sale |
| 2026-06-15 | BLLN | Sell | 3.0K | $306K | Open market or private sale |
Activity shown covers the trailing 90 days of SEC Form 4 filings. "Buy" and "sell" follow the SEC acquired/disposed codes and include compensation events (grants, option exercises, tax withholding) unless noted. Historical fact, not investment advice.
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