BLLN insider buying
Every open-market purchase of BillionToOne, Inc. (BLLN) stock by its officers, directors and major shareholders, from SEC Form 4 filings.
Bought, last 12 months$3.17M
Insiders buying (12m)5
Purchases on record5
Last purchase filedNov 12, 2025
In the last 12 months, 5 insiders of BillionToOne, Inc. bought $3.17M of BLLN stock on the open market in 5 reported purchases. The most recent was filed on Nov 12, 2025: Tsao David (Chief Technology Officer, Director) bought 1,000 shares at $60.00, worth $60K. The largest purchase on record here is $2.50M by Bremner Thomas S on Nov 7, 2025.
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| Filed | Insider | Value | Shares | Price | Stake | Trade | |
|---|---|---|---|---|---|---|---|
| Nov 12 | Tsao DavidChief Technology Officer, Director | $60K | 1,000 | $60.00 | new | Nov 7 | SEC |
| Nov 12 | ten Bosch John RoderickSee Remarks | $48K | 800 | $60.00 | +2% | Nov 7 | SEC |
| Nov 12 | Johnson Nancy JoAnnSee Remarks | $414K | 6,900 | $60.00 | +24% | Nov 7 | SEC |
| Nov 12 | Rai AkshayDirector | $150K | 2,500 | $60.00 | +23% | Nov 7 | SEC |
| Nov 10 | Bremner Thomas SDirector | $2.50M | 41,666 | $60.00 | +6% | Nov 7 | SEC |